Crystalline forms of vilanterol trifenatate and processes for their preparation
11414374 · 2022-08-16
Assignee
Inventors
Cpc classification
C07C215/60
CHEMISTRY; METALLURGY
A61K31/138
HUMAN NECESSITIES
C07C213/10
CHEMISTRY; METALLURGY
C07C217/08
CHEMISTRY; METALLURGY
International classification
C07C217/08
CHEMISTRY; METALLURGY
A61K31/138
HUMAN NECESSITIES
C07C213/10
CHEMISTRY; METALLURGY
C07C215/60
CHEMISTRY; METALLURGY
Abstract
The present invention relates to new crystalline forms of vilanterol trifenatate, processes for their preparation, and their use in a pharmaceutical composition for the treatment of respiratory diseases, particularly for the treatment of asthma and chronic obstructive pulmonary disease. In particular, the present invention relates to a crystalline form of vilanterol trifenatate characterised in that the form has an XRPD pattern as defined herein having characteristic diffraction angles (2-theta or 20 (°)) falling within or at each end of one or more of the following ranges: (a) 3 to 5°, such as 3.8 to 4.4°; and/or (b) 7 to 9.9°, such as 7 to 8.5°; and/or (c) 12 to 13.3°, such as 12 to 13.3′; and/or (d) 16.4 to 17.3°, such as 16.4 to 17.3′; and/or (e) 26.8 to 28.3°, such as 26.8 to 28.3°.
Claims
1. A crystalline form of vilanterol trifenatate, characterised by an XRPD pattern as depicted in any one of the figures and comprising the diffraction angles (2 θ) as listed in the table: TABLE-US-00022 Angle 2θ (°) Form Form Form Form Form Form Form II III IV V VI VII VIII — — 3.87 3.82 — — — 4.31 4.22 — — — — — — — — — — — 5.42 — — — — 5.70 — — — — — — — — 5.81 — — — — 6.03 6.02 — — — — — — — — — — — — — — — — — — — — — — — — — — — 6.94 — — — — — — — 7.03 — — — — — — — — — — — — — — — — 7.70 7.70 — 7.71 — 8.14 8.12 8.11 8.10 — — — 8.43 8.44 — — — — — — — — — — — — — — — 8.72 — — — — — — — — — 8.89 — — — — — 9.26 9.29 — — — — — — — — — 9.63 9.63 9.60 — — — — — — — — 9.80 — — — — — — — 10.59 — — — — — — — — — — — 10.71 10.74 — — — — — — — — 10.91 — — — — — 11.09 — — — — 11.15 11.01 — — — — — — — — — — — 11.47 — — — 11.52 11.60 11.59 — — — — — — — — — — — 11.89 — — — 11.84 11.82 — — — — 11.95 — 12.03 — — — — — — — — — 12.32 12.31 — — — — — — — — — 12.48 — — 12.62 12.59 — — — — 12.69 — — — — — 12.85 — — — 12.80 12.80 — — 12.92 — — — — — 13.10 13.16 — — — — — 13.48 13.44 13.43 13.35 — — — — — — — 13.62 — — 13.81 — 13.83 — — — — — — — 14.00 14.06 14.01 13.92 14.26 14.24 — — — — 14.25 — — — — — — — 14.72 — — — — 14.77 — — — — — 14.92 — — — 14.99 — — — — — — 15.36 — — — — — — — 15.54 15.51 — 15.44 — — 15.86 — — — — — 16.09 16.25 — 16.11 16.20 16.23 16.09 — — — — — — — — — — — 16.47 — — 16.62 — — — — — 16.63 — 16.79 — — — — — — 16.98 17.03 16.93 — — 16.92 17.12 17.32 — 17.22 — — — 17.51 — 17.41 17.42 — 17.46 — — — — — 17.55 — 17.56 — — — — 17.98 — — — 18.07 — — — — 18.14 — — — — — — 18.35 — — — — 18.48 — — — — — — — 18.60 — — 18.75 — — — — 18.75 — — — — — — — 19.01 — 19.02 19.02 — — 18.91 19.22 19.17 — — — 19.11 — — — — 19.35 — — 19.28 19.62 — 19.45 19.56 — — — — 19.75 19.70 19.78 — — 19.66 — — — — — — — 20.04 — — — 20.04 — — 20.34 20.18 — 20.33 — 20.24 — — 20.57 20.59 — 20.63 20.69 20.63 — 20.71 20.85 — — — 20.84 — — — — — — — — — — 21.00 21.05 — — 21.15 21.26 21.17 21.35 — 21.17 21.27 21.44 21.59 — — 21.49 — — 21.69 21.70 — — — 21.66 — 21.93 — 21.93 21.93 — — 21.79 — — — — 22.07 — 22.07 22.42 — 22.47 — 22.44 — 22.31 — 22.60 — 22.53 — — — — 22.69 — — — 22.76 22.81 23.01 23.07 23.04 23.02 23.01 — — — — — 23.17 — — — 23.39 — — 23.37 — — 23.28 — — 23.49 23.53 23.61 23.64 23.67 23.98 — — 23.75 — — 23.91 — 24.17 24.08 — — — 24.09 — — — — 24.23 — — 24.32 — 24.31 24.34 — — — 25.47 — — — — 24.65 — — 24.70 24.86 24.82 24.71 — — — — — — — — 24.90 — — — — — — — — 25.28 25.33 — — — 25.28 — 25.55 — 25.51 25.43 — — 25.75 — — — — 25.67 25.64 — — 25.97 25.94 — — 25.93 — — — — 26.08 26.06 — 26.14 26.15 — — — — — — — — 26.41 — — — — — 26.50 — — — — 26.72 — 26.74 26.62 — 26.73 — — 26.82 — 26.95 26.91 — 26.95 — — 27.02 — — — — 27.18 — — — — 27.18 — — 27.26 27.28 — — — — — — — 27.39 — — — — — — — 27.61 — — 27.69 — — — — — 27.73 — 27.95 — — — — — — — 28.06 — — — — — — — 28.23 — — — — — 28.42 — — — 28.43 28.78 28.72 28.70 28.67 28.79 — 28.79 — — — — — 28.96 — — — — — 29.13 — — — — — — — — 29.27 — — 29.33 29.30 — — — 29.61 29.49 — — 29.54 — — 29.70 — — — — 29.76 29.74 — 29.95 — — — — — — — — — — — — — — — — — 30.19 — — — 30.32 30.25 — — — — — — — — — 30.43 — 30.62 — 30.68 — — — 30.84 — 30.82 — — — — — 31.00 — — — — 31.06 — — 31.24 — — — — — — — 31.46 31.51 — 31.55 31.61 31.68 — — — — — — — 31.83 31.83 — — — 32.07 — — — — — — — 32.15 32.17 32.13 — — 32.20 32.39 — — — 32.30 — — — 32.65 — — — — — — — — 32.83 — — — — 33.11 33.13 — — — 33.22 — — — — — — — — — 33.67 — — — — — 33.78 — 33.83 — — — 33.91 — — — — — — — — — 34.17 — — 34.15 — — 34.24 — — — — 34.46 — — — — — — — 34.63 34.66 34.60 — — — — — — — — — 34.81 34.98 — — 34.99 — — — — — — — — — — — 35.16 — — — — — — — — — — — — 35.41 — 35.40 — 35.43 — 35.41 — — — — — 35.61 — — — — — — — — — — — 36.04 — — — — — — — — — — — 36.37 — — — — 36.39 36.45 — — — — — — — — 36.62 36.72 — 36.79 — — — — — — — — 37.11 — — — — — — — — 37.23 — — — 37.31 — 37.42 — — 37.40 — — — — — 37.66 — — 37.76 — 38.11 — 38.14 — — — — — 38.28 — — — — 38.35 — — — — — — — — 38.68 38.67 — — — — 38.81 — — — 38.71 39.29 — — — — — 39.12 — — 39.36 — — — — — — — 39.48 — 39.46 — — — — — — — 39.65 XRPD in FIG. 1 7 11 12 13 14 15 Form Form Form Form Form Form IX X XI XII XIII XIV — — — — — — — — — — — — — 5.35 — — — — — — — 5.61 — — — 5.81 — — — — 6.01 — 6.10 6.01 — — — — — — 6.27 — — 6.34 — — — — — — — — — — — — — 6.89 — — 7.04 — 7.10 — 7.05 — — 7.25 — — — — — 7.48 — — — 7.51 — — — — — — 8.09 — — — — 7.96 — 8.36 — — — — — — 8.69 — — 8.64 — — — — — — — — — — — — 9.26 — — — — — — — 9.40 9.44 — — — 9.52 — — — 9.61 — — — — 9.76 — — — — — — — 10.49 — — — — — — — — 10.77 — — 10.81 10.85 — — — — 10.92 — 10.93 — — 10.87 — — — — 11.09 — 11.23 — 11.36 11.30 — 11.37 — 11.48 — — — — — — — 11.69 11.66 — 11.71 11.77 — — — — 11.84 — 11.82 — 11.87 — — — — — — — — — 12.15 12.11 — — — 12.37 — — 12.29 — — — 12.50 12.56 — 12.56 — — — — — — — — — — — — — — — — — — — — — — 12.96 — 13.18 13.20 13.12 — — 13.28 — — — — 13.40 — — 13.68 — — — — — — — 13.84 — 13.86 14.09 14.10 14.09 — 14.00 — — — — 14.36 — — 14.57 — — — 14.50 — — 14.75 14.73 — — — — — 14.86 14.86 — — 15.06 — — — — — — — — — 15.16 15.25 — — — — — — 15.99 15.68 — — — 15.91 — — 16.17 16.22 — — 16.31 — — — — — — — — 16.59 — — — — — — — — — — — — 16.78 — 16.86 16.88 17.02 17.01 — — — — — — — 17.17 17.34 17.36 — 17.36 17.44 17.48 17.71 — 17.70 17.64 — — — 17.91 — — — — 18.07 — — — — — — — — 18.31 — — — — — — 18.40 — 18.55 18.61 18.52 18.56 18.60 18.52 18.77 — — 18.80 — — — — — — — — — 18.98 — — 18.96 18.94 — 19.23 — 19.18 — — — — 19.36 — — — 19.40 — 19.57 19.56 — — — — — 19.76 19.71 19.60 19.80 — 19.86 — — — 20.04 — — — 19.94 — — — 20.24 — 20.23 20.18 — 20.50 20.53 — — — — 20.80 — 20.83 — 20.75 — — 20.95 — 20.97 — — 21.10 21.15 21.09 21.08 21.07 21.20 — — — — — 21.42 21.49 — 21.51 21.47 21.50 — — — 21.69 21.69 21.67 21.77 21.81 21.71 — — — — — 22.06 22.00 22.09 22.00 — 22.40 22.42 22.26 22.30 — 22.61 — — — — 22.48 — 22.83 22.76 22.92 — — — — — — 22.99 23.03 — — — — — — 23.31 — 23.28 23.27 23.37 — — — — — — 23.44 23.97 23.83 — 23.81 — 23.76 — — — — — — 24.19 — — 24.18 24.14 — 24.37 24.38 24.36 — — 24.36 — — — 24.52 24.53 — 24.78 — — 24.68 24.69 24.74 — — 24.85 — — — — 25.07 — — — — — — 25.22 25.19 25.22 25.24 — — 25.47 — 25.47 — 25.73 — — — — 25.60 — — — 25.90 25.81 — — 26.06 — — — — — — 26.24 — — 26.23 — — — 26.32 26.37 — — — — — — 26.50 — — 26.70 — — — — 26.80 — — — — — — — 27.08 — 27.00 — — — — 27.20 — 27.25 — 27.29 — — — — — — — — — — — — 27.50 27.58 — — 27.81 — — — — — — — 27.99 — — — — — — 28.04 — — — 28.21 — — 28.23 — — — — 28.44 — 28.76 — — 28.67 — — — — 28.80 28.90 — 28.91 — 29.06 — — — — — — — 29.23 29.17 29.21 29.29 — 29.31 29.37 29.38 — — — — — — — — 29.76 — 29.79 — — — — — — 29.83 — — — 30.04 — — 30.09 — — — 30.17 — — — — — — 30.29 — — 30.47 30.42 — — — — — — — — — 30.85 — — — — 30.94 — 31.04 — — — — — — — 31.23 — — — — 31.47 31.54 31.38 31.48 — — — — 31.73 — — — 31.99 31.83 — 31.97 — — — — — — — — — — 32.17 — — — — 32.43 — — — — — — — — 32.89 32.87 — — — — — — 33.06 33.12 — — 33.41 33.53 — — — — — — — 33.64 — 33.60 33.87 — — — — — — — — — — 33.99 — — — — 34.16 — — — — — — — — 34.46 34.50 34.56 — 34.55 34.60 — — — — — — — — — 34.82 — — — — — — 34.96 — — — — 35.12 — — — 35.22 35.21 — — — 35.29 — — — — — — — — — — — — — 35.59 — 35.54 — 35.89 — — — 35.88 — — — — — — — — 36.23 — 36.19 — — — — — — — — 36.55 — — — — 36.69 — — — — — — — — 36.90 36.86 — — — 37.02 — — — — — — 37.25 37.28 — 37.41 — — — — 37.41 — — 37.65 — 37.69 — — — — — — — — — — — — — — — — — — — 38.53 38.66 — 38.58 — 38.54 — — — — — — 39.28 — — — — — — — — — — — — — 39.48 39.59 — 39.42 — — — — 38.67 — XRPD in FIG. 16 17 18 19 20 21
2. The crystalline form of vilanterol trifenatate according to claim 1, characterised by a thermogravimetric analysis (TGA) profile having one or more consecutive sample weight losses below 100 degrees Celsius, wherein each sample weight loss is either (a) less than 2 weight %; or (b) at least 20 weight %.
3. The crystalline form of vilanterol trifenatate according to claim 1, characterised by having a purity by HPLC of more than 99.9%.
4. The crystalline form of vilanterol trifenatate according to claim 1, characterised by comprising less than 0.15%, by area of HPLC of Impurity A.
5. The crystalline form II of vilanterol trifenatate according to claim 1 further characterized by one or more of the following: (a) a DSC profile having an endothermic event with onset at 64° C. and peak at 72° C. and a degradation event with onset at 189° C. and peak at 191° C.; (b) a TGA profile having a weight loss of 1.13%; (c) a ratio of vilanterol trifenatate:water of 1:0.57; (d) .sup.13C CP-DD/MAS-TOSS and .sup.13C CP-DD/MAS-TOSS with Dipolar Dephasing comprising the characteristic chemical shift (±0.218 ppm): 182.35, 171.24, 169.06, 154.47, 152.51, 146.19, 143.36, 36.17, 134.43, 133.12, 130.50, 127.67, 126.15, 124.62; (e) .sup.15N CP-DD/MAS shown in
6. The crystalline form III of vilanterol trifenatate according to claim 1 further characterized by one or more of the following: (a) a DSC profile having a endothermic event with onset at 67° C. and peak at 79° C. and a degradation event with onset at 189° C. and peak at 191° C.; (b) a TGA profile having a two consecutive poor weight loss of approx. 0.32% and 0.54%; (c) a ratio of vilanterol trifenatate:water of 1:0.37; (d) defined according to the European Pharmacopoeia as slightly hygroscopic.
7. The crystalline form of vilanterol trifenatate according to claim 1, preparable by: (a) providing vilanterol trifenatate form I ##STR00004## and cystallising from a mixture of acetone and water in a ratio in the range of from about 5:1 to 10:1 by volume; and, optionally, (b) converting the form II and/or III thus prepared to another form of vilanterol trifenatate by crystallising from a solvent or solvent system selected from the group consisting of: heptane, cyclohexane, methylcyclohexane, 2-propanol, 3-methyl-1-butanol, anisole, nitromethane, cyclohexane/ethanol (50:50), cyclihexane/2-methyltetrahydrofuran (50:50), heptane/dimethoxyethane (DME) (50:50), cyclohexane:methylketone (50:50) and methyl cyclohexane.
8. The crystalline form of vilanterol trifenatate according to claim 1, preparable by: (a) providing vilanterol trifenatate form I ##STR00005## and cystallising from a mixture of acetone and water in a ratio in the range of from about 30:3 by volume; and, optionally, (b) converting the form II thus prepared to (i) another form of vilanterol trifenatate and/or (ii) to form III, by adding further water.
9. A process for the preparation of crystalline form II of vilanterol trifenatate according to claim 1, comprising the steps of: a1) suspending vilanterol trifenatate form I in acetone, a2) heating the suspension, optionally with stirring, a3) adding water, optionally with stirring, a4) cooling down the obtained solution, optionally at a rate of about 10° C./hour and, optionally, a5) adding a seed of crystalline form II, and a6) isolating new crystalline form II, optionally under reduced pressure, followed by drying, optionally by spray drying, the resulting suspension.
10. The process for the preparation of crystalline form III of vilanterol trifenatate according to claim 1, comprising the steps of: Either b1) suspending vilanterol trifenatate forms II and III in water, optionally at 20-25° C. and optionally with stirring, and b2) isolating crystalline form III, optionally under reduced pressure, followed by drying, optionally by spray drying the suspension; Or c1) suspending vilanterol trifenatate form I in acetone, c2) heating the suspension, c3) adding water, to the solution obtained in step c2), c4) cooling down the solution obtained in step c3), optionally at a rate about 10° C./hour and, optionally, c5) adding a seed of crystalline form III, and c6) isolating crystalline form III, optionally under reduced pressure, followed by drying or optionally by spray drying the suspension; Or d1) suspending vilanterol trifenatate form II in heptane, d2) heating the suspension, optionally at a rate about 20° C./hour and optionally with stirring, d3) cooling down the suspension, optionally at a rate about 20° C./hour and optionally with stirring, and, optionally d4) heating the suspension, optionally at a rate about 10° C./hour and optionally with stirring, cooling down the suspension optionally at a rate about 10° C./hour and optionally with stirring, heating the suspension, optionally at a rate about 5° C./hour and optionally with stirring, cooling down the suspension, optionally at a rate about 5° C./hour and optionally with stirring, d5) heating the suspension, optionally at a rate of about 10° C./hour and optionally with stirring, and d6) isolating new crystalline form III, optionally under reduced pressure, followed by drying, optionally by spray drying, the suspension.
11. The process for the preparation of a crystalline form of vilanterol trifenatate defined in claim 1, comprising: either suspending vilanterol trifenatate form II in a solvent, undertaking one or more cycles of heating and cooling, optionally with stirring, and isolating the crystalline form, optionally under reduced pressure, followed by drying, optionally by spray drying, the suspension, wherein the solvent is, (a) for the preparation of form IV, cyclohexane; (b) for the preparation of form V, methylcyclohexane; (c) for the preparation of form VI, 2-propanol; (d) for the preparation of form VII, 3-methyl-1-butanol; (e) for the preparation of form VIII, anisole; for the preparation of form IX, nitromethane; (g) for the preparation of form X, a binary mixture of cyclohexane:ethanol or of heptane:ethanol; (h) for the preparation of form XI, a binary mixture of cyclohexane:2-methyltetrahydrofuran; (i) for the preparation of form XII, a binary mixture of heptane: 1,2-dimethoxyethane; (j) for the preparation of form XIII, a binary mixture of cyclohexane:methylethylketone or of heptane:methylethylketone or of mesitylene:methylethylketone; or suspending vilanterol trifenatate form III in methylcyclohexane, undertaking one or more cycles of heating and cooling, optionally with stirring, and isolating the crystalline form, optionally under reduced pressure, followed by drying, optionally by spray drying, the suspension.
12. The process according to claim 9, wherein the crystallization step further comprises controlling the particle size of the vilanterol trifenatate, optionally by micronisation of the vilanterol trifenatate.
13. The process according to claim 9, further comprising the step of isolating vilanterol trifenatate in the form of powder.
14. Vilanterol trifenatate obtainable from the process according to claim 7.
15. Vilanterol trifenatate according to claim 14, wherein the vilanterol trifenatate is suitable for administration by inhalation having a particle size distribution of Dv90 below 10 μm.
16. A vilanterol trifenatate crystalline form according to claim 1 formulated for the treatment of COPD or asthma.
17. A pharmaceutical composition comprising the vilanterol trifenatate crystalline form according to claim 1 in association with a pharmaceutically acceptable carrier therefor and optionally one or more additional active pharmaceutical ingredient(s).
18. The pharmaceutical composition according to claim 17 in a form suitable for inhalation, optionally in the form of micronized powders, having a particle size suitable for inhalation, which powdered form is optionally deliverable from foil-wrapped blisters.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Specific examples of polymorphs of the present invention, in particular, novel forms II to XIV, processes for preparing them and some of their characteristics or properties will now be described, with reference to the accompanying drawings, in which:
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(27) Comparative
(28) Comparative
(29) 2Theta, 2-theta and 2θ are used synonymously through this specification.
DETAILED DESCRIPTION OF THE INVENTION
(30) Vilanterol Trifenatate Form II
(31) Accordingly, the present invention provides a new crystalline form of vilanterol trifenatate, designated as form II, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 14.26°; 14.72°; 17.51°; 23.98° and 24.32°.
(32) Further Structural Characterization of Form II
(33) Preferably, crystalline form II of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(34) TABLE-US-00002 TABLE 1 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form II. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) *4.31 641 20.49 20 *8.14 892 10.86 27 *8.43 375 10.49 11 10.59 164 8.35 5 11.09 410 7.98 13 *12.85 1203 6.89 37 13.10 943 6.76 29 13.48 243 6.57 7 13.81 301 6.41 9 14.26 480 6.21 15 14.72 576 6.02 18 16.09 317 5.51 10 *16.62 893 5.33 27 *17.12 1319 5.18 40 17.51 3281 5.07 100 19.01 915 4.67 28 19.22 816 4.62 25 19.62 937 4.52 29 20.04 1048 4.43 32 20.34 1483 4.37 45 21.15 1184 4.20 36 21.44 1693 4.14 52 21.69 1033 4.10 31 21.93 851 4.05 26 22.42 1232 3.97 38 23.01 1868 3.87 57 23.39 1026 3.80 31 23.98 1660 3.71 51 24.32 1724 3.66 53 25.47 675 3.50 21 25.75 668 3.46 20 26.14 906 3.41 28 26.72 375 3.34 11 *27.18 580 3.28 18 *27.69 548 3.22 17 28.78 327 3.10 10 29.61 813 3.01 25 29.70 800 3.01 24 30.84 105 2.90 3 31.61 204 2.83 6 32.07 98 2.79 3 32.39 95 2.76 3 33.91 480 2.64 15 34.46 57 2.60 2 34.98 132 2.57 4 35.41 171 2.53 5 36.45 89 2.47 3 37.11 175 2.42 5 38.35 116 2.35 4 39.29 194 2.29 6
(35) New crystalline form II of vilanterol trifenatate may be further characterized by differential scanning calorimetry (DSC) profile as depicted in
(36) New crystalline form II of vilanterol trifenatate may be further characterized by thermogravimetric analysis (TGA) profile as depicted in
(37) The proportion molar proportion of vilanterol trifenatate:water is 1:0.57 (confined by EGA). The TGA graph shows that water release starts at about 75° C., which indicates that the water is not bonded to the vilanterol trifenatate but is on the surface of the crystals. If the water were bonded, it would be released at temperatures higher than 100° C., typical behaviour of a hydrate. Accordingly, the polymorph of the present invention is non-hydrated.
(38) New crystalline form II of vilanterol trifenatate may be further characterized by .sup.13C CP-DD/MAS-TOSS and .sup.13C CP-DD/MAS-TOSS with Dipolar Dephasing spectra as depicted in
(39) New crystalline form II of vilanterol trifenatate may be further characterized by .sup.15N CP-DD/MAS spectrum as depicted in
(40) Hygroscopicity of Form II
(41) New crystalline form II of vilanterol trifenatate may be further characterized by dynamic vapor sorption analysis having a mass increase of 0.04% at 80% RH and 25° C. as shown in Table 2 and Example 9 hereinbelow. The values in the table (and comparable tables in this specification) are weight % variations that result from the use of the European Pharmacopoeia equation provided in the general experimental section further below. Weights of the sample at differing % RHs are not shown in this table. The hygroscopicity value is directly obtained from the sorption row at 80% RH, cycle 1.
(42) TABLE-US-00003 TABLE 2 Dynamic vapor sorption analysis of vilanterol trifenatate crystalline form II. Change In Mass (%) Target RH (%) Sorption Desorption Hysteresis Cycle 1 0.0 — −0.03351 — 10.0 — −0.01706 — 20.0 — −0.00684 — 30.0 — 0.00031 — 40.0 −0.00015 0.00692 0.00707 50.0 0.00607 0.01476 0.00868 60.0 0.01353 0.02244 0.00892 70.0 0.02160 0.03051 0.00892 80.0 0.03750 0.04181 0.00430 90.0 0.05802 0.05802 — Cycle 2 0.0 −0.03351 — — 10.0 −0.02290 — — 20.0 −0.01545 — — 30.0 −0.00907 — — 40.0 −0.00261 — — 50.0 0.00277 — — 60.0 0.01068 — — 70.0 0.01821 — — 80.0 0.03189 — — 90.0 0.04819 — —
(43) The data in table 2 show that form II of vilanterol trifenatate is even less hygroscopic than form I in comparative testing (0.04% mass increase versus 0.19% mass increase for form I, as indicated in Example 9 hereinbelow) and therefore may be further characterized according to the European Pharmacopoeia (EP, version 7.0) as non-hygroscopic. This characteristic presents an advantage over other crystalline forms with respect to handling and stability.
(44) Hygroscopicity describes water uptake by a compound under differing considions of relative humidity. The more hygroscopic the compound, the higher the difference in the water content at different relative humidities. Active pharmaceutical ingredients (APIs) that change water content during formulation processes and in the final formulation need to be handled with more care with regard to environmental control during production and packaging. Accordingly, a low level of hygroscopicity is advantageous and approximately zero hygroscopicity—defined as an increase in mass of less than 0.2%—(non-hygroscopic) is particularly preferred.
(45) Most materials do not release water at the same rate as they absorb water, and the difference in water uptake between the sorption and desorption isotherms is termed ‘hysteresis’ of the material. Very similar sorption and desorption curves means little to no hysteresis, indicating that the material absorbed water onto the surface in the increasing humidity run and then the water simply desorbed from the surface at a similar rate in the decreasing humidity part of the experiment. Where the sorption and desorption curves are different, this indicates that the material absorbed water into the structure.
(46) Accordingly, the present invention further provides a novel polymorphic form of vilanterol trifenatate having a a mass increase of less than 0.1%, preferably less than 0.75%, more preferably less than 0.5%, at 80% RH and 25° C. as determined by DVS analysis (as described herein—see Example 9 and
(47) Structural Stability of Form II
(48) New crystalline form II of vilanterol trifenatate may be further characterized by its stability at 60% RH and 25° C. for 7 days, as described in
(49) Preparation of Form II
(50) The present invention further provides a method for preparing form II of vilanterol trifenatate, which method comprises providing a solution of vilanterol trifenatate form I in acetone, adding water, preferably in a ratio of acetone 30 vol. to water less than 6 vol., more preferably less than 5 vol., especially preferably less than 4 vol., such as 3 vol. to the solution, and isolating the resulting product (form II).
(51) Preferably, the process comprises:
(52) a1) suspending vilanterol trifenatate form I in acetone, more preferably in about 30 vol.,
(53) a2) heating the suspension, preferably up to 50° C., more preferably with stirring,
(54) a3) adding water, more preferably 3 vol. to the clear solution, yet more preferably with stirring,
(55) a4) cooling down the obtained solution, preferably to 5-0° C., more preferably at a rate about 10° C./hour a5) optionally, adding a seed of crystalline form II, and
(56) a6) isolating new crystalline form II, preferably by filtration, more preferably under reduced pressure, followed by drying or optionally by spray drying the resulting suspension.
(57) Unexpectedly, it was observed that the use of water combined with acetone has a highly significant effect on the molecular rearrangement of vilanterol trifenatate inducing the formation of new crystalline forms, in particular forms II and III (form III is further described below).
(58) Furthermore, the inventors have additionally found that the removal of water from the process of the present invention results in the formation of the previously described crystalline form I of vilanterol trifenatate.
(59) High Purity Form II
(60) The present invention still further provides an improved process to prepare vilaterol trifenatate in high purity. The purity of the product obtained by following the procedure described above presents a better purity profile than the procedures described in literature.
(61) The present inventors also carried out recrystallizations using the solvent systems reported for the salt formation with triphenyl acetic acid according to the processes of WO2003/024439 (GSK) and WO2014/041565 (Laurus), and an impurity (referred to as impurity A, defined below) at high levels at 1.33 RRT by HPLC (using the protocol described hereinbelow) was observed.
(62) The inventors have identified the influence of the recrystallization solvent system on the final purity of vilanterol trifenatate, where the solvent system used in the process plays an important role in maintaining the impurities below suitable limits. Recrystallizations carried out using acetone/water solvent systems, for example compared to using acetone alone, gave final products with higher chemical purity.
(63) It has surprisingly been found that impurity A, present in the non-purified (prior art) vilanterol trifenatate at a level of 0.17% by area by HPLC, is reduced to 0.06% by area as determined by HPLC when following the process of the present invention, in particular when preparing form II according to the invention. This improvement in the final product purity is of extreme importance, allowing supply high quality medicines to patients.
(64) The structure for the impurity A is presented below:
(65) ##STR00003##
(66) Therefore, vilanterol trifenatate obtained from the above process contains less than 0.15%, preferably less than 0.10%, of any impurity by area as determined by reverse phase HPLC.
(67) Accordingly, the present invention further provides high purity vilanterol trifenatate, optionally a novel polymorphic form thereof, comprising less than 0.15%, preferably less than 0.1%, more preferably less than 0.075%, (such as 0.05-0.06%) of Impurity A by HPLC (as described herein).
(68) Preferably, the high purity vilanterol trifenatate is form II or form III as defined herein.
(69) Vilanterol Trifenatate Form III
(70) The present invention therefore further provides a new crystalline form of vilanterol trifenatate, designated form III, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 11.89°; 15.36°; 18.07°; 21.26° and 21.59°.
(71) New crystalline form III of vilanterol trifenatate trifenatate has an X-ray powder diffraction pattern as depicted in
(72) TABLE-US-00004 TABLE 3 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form III. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 4.22 444 20.92 10 8.12 1383 10.89 32 8.44 648 10.48 15 10.91 258 8.11 6 11.52 156 7.68 4 11.89 333 7.44 8 12.69 532 6.98 12 12.92 649 6.85 15 13.16 792 6.73 19 13.44 241 6.59 6 14.24 226 6.22 5 14.99 437 5.91 10 15.36 419 5.77 10 15.86 219 5.59 5 16.25 325 5.46 8 16.79 1775 5.28 42 16.98 1525 5.22 36 17.32 731 5.12 17 18.07 525 4.91 12 18.75 1469 4.73 34 19.17 748 4.63 18 19.75 576 4.49 14 20.18 246 4.40 6 20.57 800 4.32 19 20.71 634 4.29 15 21.26 4263 4.18 100 21.59 1968 4.12 46 21.70 1751 4.10 41 22.60 925 3.93 22 22.69 1319 3.92 31 23.07 739 3.86 17 24.17 299 3.68 7 24.70 68 3.60 2 25.28 507 3.52 12 25.55 705 3.49 17 26.15 261 3.41 6 26.82 1056 3.32 25 27.26 335 3.27 8 27.95 353 3.19 8 28.72 372 3.11 9 29.49 126 3.03 3 29.95 46 2.98 1 30.62 112 2.92 3 31.00 276 2.88 6 31.68 345 2.82 8 32.15 262 2.78 6 32.65 209 2.74 5 33.11 253 2.71 6 33.78 266 2.65 6 34.63 78 2.59 2 35.16 196 2.55 5 36.37 54 2.47 1 37.42 132 2.40 3 38.11 80 2.36 2
(73) New crystalline form III of vilanterol trifenatate may be further characterized by differential scanning calorimetry profile as depicted in
(74) New crystalline form III of vilanterol trifenatate may be further characterized by thermogravimetric analysis profile as depicted in
(75) The proportion molar proportion of vilanterol trifenatate:water is 1:0.37 (confimed by EGA). The TGA graph shows that water release starts at about 65° C. which indicates that the water is not bonded to the vilanterol trifenatate, but is on the surface of the crystals. If the water were bonded, it would be released at temperatures higher than 100° C., typical behavior of a hydrate. Accordingly, the polymorph of the present invention is non-hydrated.
(76) Hygroscopicity of Form III
(77) New crystalline form III of vilanterol trifenatate may be further characterized by dynamic vapor sorption analysis having a mass increase of 1.1% at 80% RH and 25° C. as shown in table 4.
(78) TABLE-US-00005 TABLE 4 Dynamic vapor sorption analysis of vilanterol trifenatate crystalline form III. Change In Mass (%) Target RH (%) Sorption Desorption Hysteresis Cycle 1 0.0 — −0.017 — 10.0 — 0.002 — 20.0 — 0.015 — 30.0 — 0.024 — 40.0 0.000 0.035 0.035 50.0 0.008 0.280 0.271 60.0 0.022 0.421 0.399 70.0 0.037 0.567 0.530 80.0 1.083 1.144 0.061 90.0 1.857 1.857 — Cycle 2 0.0 −0.017 — — 10.0 −0.003 — — 20.0 0.008 — — 30.0 0.016 — — 40.0 0.025 — — 50.0 0.033 — — 60.0 0.041 — — 70.0 0.056 — — 80.0 1.111 — — 90.0 1.952 — —
(79) New crystalline form III of vilanterol trifenatate may be further characterized as slightly hygroscopic.
(80) Structural Stability of Form III
(81) New crystalline form III of vilanterol trifenatate may be further characterized by the stability at 60% RH and 25° C. for 7 days, as described in Example 10 below. New crystalline form III of vilanterol trifenatate provides no significant modifications in XRPD pattern when exposed to 60% RH and 25° C. for 7 days, indicating an excellent stability as depicted in
(82) Preparation of Form III
(83) The present invention provides a method for preparing form III of vilanterol trifenatate comprising providing a suspension of form II with form III in water and isolating the form III.
(84) Preferably, the method comprises:
(85) b1) suspending vilanterol trifenatate forms II and III in water, preferably in 5 vol., more preferably at 20-25° C. and preferably stirring,
(86) b2) isolating new crystalline form III, preferably by filtration, preferably under reduced pressure followed by drying or optionally by spray drying the suspension.
(87) Alternatively, particularly if no form III is available, the present invention provides a method for preparing form III of vilanterol trifenatate comprising forming a suspension of form I in acetone, adding water, preferably in a ratio of acetone 30 vols, to water 5 vols or more, such as 6 vols., and isolating new form III.
(88) Preferably, the method comprises:
(89) c1) suspending vilanterol trifenatate form I in acetone, more preferably in 30 vol.,
(90) c2) heating the suspension, preferably up to 50° C.,
(91) c3) adding water, more preferably 6 vol., to the obtained solution,
(92) c4) cooling down the obtained solution, preferably to 5-0° C., more preferably at a rate about 10° C./hour and,
(93) c5) optionally, adding a seed of crystalline form III, and
(94) c6) isolating new crystalline form III, preferably by filtration preferably under reduced pressure, followed by drying or optionally by spray drying the suspension.
(95) Unexpectedly, it was observed that the amount of water combined with acetone has an effect on the molecular rearrangement of vilanterol trifenatate leading to the formation of new crystalline forms.
(96) High Purity Form III
(97) The Impurity A (described above in relation to form II) that is present in the non-purified vilanterol trifenatate form I (0.17% in area by HPLC) is reduced to 0.05% in area by HPLC by following the procedure for the preparation of form III, such as described in Example 3 or Example 4 hereinbelow.
(98) Accordingly, the present invention further provides a novel polymorphic form of vilanterol trifenatate comprising less than 0.15%, preferably less than 0.1%, more preferably less than 0.075%, (such as 0.05-0.06%) of Impurity A by HPLC (as described herein).
(99) The present invention further provides an alternative method for preparing form III of vilanterol trifenatate comprising:
(100) d1) suspending vilanterol trifenatate form II in heptane, preferably in 24 vol.,
(101) d2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(102) d3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(103) d4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably with stirring, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably with stirring, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably with stirring, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably with stirring,
d5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably with stirring,
d6) isolating new crystalline form III, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form IV
(104) The present invention further provides a new crystalline form of vilanterol trifenatate designated form IV, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 15.54°; 17.03°; 17.41°; 34.24° and 34.66°.
(105) New crystalline form IV of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(106) TABLE-US-00006 TABLE 5 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form IV. Angle 2θ(°) Height [cts] d value (Å) Intensity (%) 3.87 617 22.82 10 7.70 996 11.48 16 8.11 1889 10.90 30 9.63 784 9.18 12 11.60 1190 7.63 19 12.32 1945 7.19 30 12.62 208 7.02 3 13.43 470 6.59 7 13.83 211 6.40 3 15.54 6401 5.70 100 17.03 1424 5.21 22 17.41 1286 5.10 20 19.02 1473 4.67 23 19.45 2335 4.56 36 19.70 921 4.51 14 20.59 897 4.31 14 20.85 806 4.26 13 21.17 1285 4.20 20 21.93 1112 4.05 17 22.47 197 3.96 3 23.04 963 3.86 15 23.49 2730 3.79 43 24.08 1257 3.70 20 24.31 280 3.66 4 24.86 647 3.58 10 25.33 180 3.52 3 25.97 339 3.43 5 26.50 1407 3.36 22 26.74 504 3.33 8 27.02 306 3.30 5 27.28 319 3.27 5 28.06 177 3.18 3 28.42 253 3.14 4 28.70 263 3.11 4 29.33 83 3.04 1 30.32 1636 2.95 26 30.82 159 2.90 2 31.24 111 2.86 2 31.83 303 2.81 5 32.17 187 2.78 3 33.13 63 2.70 1 33.67 98 2.66 2 34.24 522 2.62 8 34.66 584 2.59 9 35.40 290 2.54 5 36.62 46 2.45 1 37.23 77 2.41 1 38.28 329 2.35 5 38.68 242 2.33 4 38.81 240 2.32 4 39.36 96 2.29 2
Preparation of Form IV
(107) The present invention provides a method for preparing form IV of vilanterol trifenatate comprising:
(108) e1) suspending vilanterol trifenatate form II in cyclohexane, preferably in 24 vol.,
(109) e2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(110) e3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(111) e4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
e5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
e6) isolating new crystalline form IV, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form V
(112) This invention also discloses a new crystalline form of vilanterol trifenatate designated form V, characterized by a X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 15.51′; 17.22°; 20.33°; 24.34° and 26.95°.
(113) New crystalline form V of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(114) TABLE-US-00007 TABLE 6 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form V. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 3.82 577 23.16 11 7.70 1232 11.48 23 8.10 2389 10.91 44 8.72 139 10.14 3 9.63 922 9.19 17 11.59 1317 7.63 24 12.31 1931 7.19 36 12.59 301 7.03 6 13.35 534 6.63 10 14.00 248 6.32 5 15.51 5440 5.71 100 16.11 231 5.50 4 16.93 581 5.24 11 17.22 1888 5.15 35 17.42 1078 5.09 20 19.02 1899 4.67 35 19.35 933 4.59 17 19.56 1283 4.54 24 19.78 830 4.49 15 20.33 911 4.37 17 21.00 1579 4.23 29 21.35 379 4.16 7 21.93 1245 4.05 23 22.53 184 3.95 3 23.02 874 3.86 16 23.17 1074 3.84 20 23.37 1571 3.81 29 23.53 1917 3.78 35 23.75 2894 3.75 53 24.34 394 3.66 7 24.82 651 3.59 12 25.51 289 3.49 5 25.94 375 3.43 7 26.41 1571 3.37 29 26.62 547 3.35 10 26.95 629 3.31 12 27.39 100 3.26 2 28.23 364 3.16 7 28.67 96 3.11 2 29.30 88 3.05 2 30.25 1164 2.95 21 30.68 182 2.91 3 31.46 284 2.84 5 31.83 109 2.81 2 32.13 168 2.79 3 32.83 38 2.73 1 33.83 111 2.65 2 34.17 469 2.62 9 34.60 244 2.59 4 34.99 267 2.56 5 36.04 111 2.49 2 36.72 53 2.45 1 37.66 268 2.39 5 38.14 229 2.36 4 38.67 107 2.33 2 39.48 79 2.28 1
Preparation of Form V
(115) The present invention also provides a method for preparing form V of vilanterol trifenatate comprising:
(116) f1) suspending vilanterol trifenatate form II in methylcyclohexane, preferably in 24 vol.,
(117) f2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(118) f3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(119) f4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
f5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
f6) isolating new crystalline form V, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form VI
(120) This invention also discloses a new crystalline form of vilanterol trifenatate designated form VI, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 6.03°; 11.47°; 13.62°; 20.63° and 21.49°.
(121) New form VI of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(122) TABLE-US-00008 TABLE 7 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form VI. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 5.70 205 15.52 15 6.03 607 14.65 45 9.60 196 9.21 15 11.47 787 7.72 58 11.95 198 7.41 15 12.80 188 6.92 14 13.62 1345 6.50 100 14.06 252 6.30 19 14.92 259 5.94 19 16.20 169 5.47 13 16.47 141 5.38 10 17.55 207 5.05 15 17.98 467 4.93 35 18.48 322 4.80 24 20.04 728 4.43 54 20.63 874 4.31 65 21.05 641 4.22 48 21.49 1304 4.14 97 22.07 403 4.03 30 22.44 661 3.96 49 23.01 393 3.87 29 23.61 100 3.77 7 24.23 201 3.67 15 24.71 265 3.60 20 25.43 191 3.50 14 26.08 60 3.42 4 26.91 58 3.31 4 27.61 198 3.23 15 28.79 154 3.10 11 29.13 137 3.07 10 29.54 84 3.02 6 31.51 39 2.84 3 32.30 44 2.77 3 35.43 25 2.53 2 37.40 47 2.40 4
Preparation of Form VI
(123) The present invention further provides a method for preparing form VI of vilanterol trifenatate comprising:
(124) g1) suspending vilanterol trifenatate form II in 2-propanol, preferably in 24 vol.,
(125) g2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(126) g3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(127) g4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
g5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
g6) isolating new crystalline form VI, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form VII
(128) This invention still further discloses a new crystalline form of vilanterol trifenatate designated form VII, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 9.26°; 10.71′; 14.01′; 20.24° and 25.67°.
(129) New form VII of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(130) TABLE-US-00009 TABLE 8 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form VII. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 6.02 426 14.69 53 6.94 325 12.74 41 7.71 215 11.46 27 9.26 358 9.55 45 10.71 521 8.26 65 11.15 294 7.94 37 11.84 385 7.48 48 12.80 115 6.92 14 14.01 532 6.32 67 14.77 229 6.00 29 15.44 242 5.74 30 16.23 272 5.46 34 17.46 644 5.08 81 18.60 503 4.77 63 19.11 711 4.64 89 20.24 798 4.39 100 20.69 527 4.29 66 21.17 553 4.20 69 21.66 461 4.10 58 22.76 191 3.91 24 23.64 165 3.76 21 24.65 207 3.61 26 25.67 296 3.47 37 26.06 203 3.42 25 26.73 148 3.34 19 27.18 64 3.28 8 28.96 76 3.08 10 29.76 57 3.00 7 30.19 29 2.96 4 35.61 44 2.52 5 36.79 42 2.44 5 39.46 28 2.28 4
Preparation of Form VII
The present invention accordingly provides a method for preparing form VII of vilanterol trifenatate comprising:
h1) suspending vilanterol trifenatate form II in 3-methyl-1-butanol, preferably in 24 vol.,
h2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
h3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
h4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
h5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
h6) isolating new crystalline form VII, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form VIII
(131) Still further, this invention discloses a new crystalline form of vilanterol trifenatate designated form VIII, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 8.89°; 12.48°; 13.92°; 14.25° and 21.79°.
(132) New form VIII of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(133) TABLE-US-00010 TABLE 9 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form VIII. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 5.42 176 16.32 6 5.81 201 15.22 7 7.03 657 12.58 23 8.89 667 9.94 23 9.29 87 9.52 3 9.80 43 9.03 2 10.74 1169 8.24 41 11.01 1366 8.03 48 11.82 1182 7.48 42 12.03 467 7.35 16 12.48 576 7.09 20 13.92 958 6.36 34 14.25 2012 6.22 71 16.09 255 5.51 9 16.63 242 5.33 9 16.92 497 5.24 17 17.56 1060 5.05 37 18.14 574 4.89 20 18.35 764 4.84 27 18.75 1092 4.73 38 18.91 658 4.69 23 19.28 1099 4.60 39 19.66 1578 4.52 55 20.63 2028 4.31 71 20.84 1274 4.26 45 21.27 419 4.18 15 21.79 2846 4.08 100 22.07 606 4.03 21 22.31 366 3.98 13 22.81 166 3.90 6 23.28 505 3.82 18 23.67 512 3.76 18 23.91 803 3.72 28 24.09 729 3.69 26 24.90 376 3.58 13 25.28 242 3.52 9 25.64 358 3.47 13 25.93 1150 3.44 40 26.95 587 3.31 21 27.73 294 3.22 10 28.43 117 3.14 4 28.79 319 3.10 11 29.27 386 3.05 14 29.74 209 3.00 7 30.43 144 2.94 5 31.06 305 2.88 11 31.55 63 2.84 2 32.20 78 2.78 3 33.22 163 2.70 6 34.15 84 2.63 3 34.81 113 2.58 4 35.41 177 2.53 6 36.39 100 2.47 4 37.31 83 2.41 3 37.76 66 2.38 2 38.71 123 2.33 4 39.12 61 2.30 2 39.65 156 2.27 6
Preparation of Form VIII
(134) The present invention additionally provides a method for preparing form VIII of vilanterol trifenatate comprising:
(135) i1) suspending vilanterol trifenatate form II in anisole, preferably in 24 vol.,
(136) i2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(137) i3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(138) i4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
i5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
i6) isolating new crystalline form VIII, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form IX
(139) This invention additionally discloses a new crystalline form of vilanterol trifenatate designated form IX, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 6.01°; 7.04°; 16.86°; 24.78° and 29.29°.
(140) New form IX of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(141) TABLE-US-00011 TABLE 10 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form IX Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 6.01 1462 14.71 73 7.04 1173 12.56 59 8.09 400 10.93 20 9.26 1073 9.55 54 10.49 189 8.43 9 10.81 1221 8.18 61 10.92 1125 8.10 56 11.23 533 7.88 27 11.71 595 7.56 30 11.84 774 7.48 39 13.18 2001 6.72 100 14.09 1540 6.29 77 14.57 612 6.08 31 15.06 513 5.88 26 15.99 251 5.54 13 16.31 767 5.43 38 16.86 1130 5.26 56 17.34 720 5.12 36 17.71 84 5.01 4 18.07 122 4.91 6 18.55 581 4.78 29 18.77 382 4.73 19 19.40 654 4.58 33 19.80 192 4.48 10 20.04 237 4.43 12 21.20 1484 4.19 74 21.42 971 4.15 49 21.77 1246 4.08 62 22.61 264 3.93 13 23.31 366 3.82 18 23.97 263 3.71 13 24.19 215 3.68 11 24.37 128 3.65 6 24.78 1501 3.59 75 25.73 398 3.46 20 26.51 373 3.36 19 27.25 694 3.27 35 28.76 33 3.10 2 29.29 429 3.05 21 30.85 386 2.90 19 32.89 83 2.72 4 33.41 76 2.68 4 33.87 82 2.65 4 34.60 140 2.59 7 36.69 112 2.45 6 37.41 75 2.40 4 38.53 78 2.34 4 39.28 18 2.29 1
Preparation of Form IX
(142) In another embodiment, the present invention provides a method for preparing form IX of vilanterol trifenatate comprising:
(143) j1) suspending vilanterol trifenatate form II in nitromethane, preferably in 24 vol.,
(144) j2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(145) j3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(146) j4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
j5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
j6) isolating new crystalline form IX, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form X
(147) This invention moreover discloses a new crystalline form of vilanterol trifenatate designated form X, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 7.25°; 7.48°; 12.37°; 13.20° and 25.07°.
(148) New form X of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(149) TABLE-US-00012 TABLE 11 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form X. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 5.35 135 16.53 7 5.81 476 15.22 23 6.34 393 13.94 19 7.25 484 12.19 23 7.48 489 11.82 24 8.36 397 10.57 19 9.52 101 9.29 5 10.85 502 8.16 24 11.48 1323 7.71 64 11.77 196 7.52 9 12.37 859 7.15 41 13.20 2073 6.71 100 13.68 473 6.47 23 14.10 335 6.28 16 14.75 318 6.01 15 15.68 84 5.65 4 16.88 337 5.25 16 17.36 567 5.11 27 17.91 238 4.95 11 18.61 201 4.77 10 18.98 295 4.68 14 19.23 418 4.61 20 20.50 970 4.33 47 20.80 1223 4.27 59 21.10 700 4.21 34 21.49 638 4.13 31 21.81 1010 4.08 49 22.40 287 3.97 14 22.83 435 3.89 21 23.83 504 3.73 24 24.38 410 3.65 20 25.07 1023 3.55 49 26.06 445 3.42 21 26.80 377 3.33 18 27.81 64 3.21 3 29.06 54 3.07 3 29.76 253 3.00 12 30.47 85 2.93 4 31.04 65 2.88 3 32.87 56 2.73 3 33.53 67 2.67 3 34.46 72 2.60 4 35.29 71 2.54 3 35.89 89 2.50 4 36.55 120 2.46 6 38.66 82 2.33 4
Preparation of Form X
(150) The present invention also provides a method for preparing form X of vilanterol trifenatate comprising:
(151) k1) suspending vilanterol trifenatate form I in a binary solvent mixture, preferably a ratio of 50:50 of, for example, cyclohexane:ethanol or heptane:ethanol, more preferably in 24 vols.
(152) k2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(153) k3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(154) k4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
k5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
k6) isolating new crystalline form X, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
(155) Alternatively, the present invention provides a method for preparing form X of vilanterol trifenatate comprising:
(156) l1) suspending vilanterol trifenatate form II in a binary mixture as described above, preferably 50:50 of cyclohexane:ethanol or heptane:ethanol, preferably in 24 vol.,
(157) l2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(158) l3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(159) l4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
l5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
l6) isolating new crystalline form X, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form XI
(160) In another embodiment, this invention discloses a new crystalline form of vilanterol trifenatate designated form XI, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 14.09°; 18.52°; 20.95°; 23.28° and 29.31°.
(161) New form XI of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(162) TABLE-US-00013 TABLE 12 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form XI. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 6.10 446 14.49 21 7.10 329 12.46 15 8.69 73 10.17 3 9.40 771 9.41 36 10.93 644 8.10 30 11.36 1122 7.79 53 11.82 315 7.48 15 12.15 190 7.29 9 12.50 268 7.08 13 13.12 71 6.75 3 14.09 2130 6.29 100 14.73 747 6.01 35 14.86 618 5.96 29 16.17 435 5.48 20 17.02 862 5.21 40 17.70 580 5.01 27 18.52 2025 4.79 95 19.36 1065 4.58 50 19.57 1106 4.54 52 19.86 495 4.47 23 20.24 303 4.39 14 20.53 353 4.33 17 20.95 1666 4.24 78 21.15 1297 4.20 61 21.71 1728 4.09 81 22.06 717 4.03 34 22.42 252 3.97 12 22.76 296 3.91 14 23.28 447 3.82 21 24.36 553 3.65 26 24.85 401 3.58 19 25.22 412 3.53 19 25.47 725 3.50 34 26.24 263 3.40 12 26.70 373 3.34 17 27.29 438 3.27 21 28.21 135 3.16 6 28.80 79 3.10 4 29.31 541 3.05 25 30.04 268 2.97 13 30.42 154 2.94 7 31.47 53 2.84 3 31.99 73 2.80 3 33.06 55 2.71 3 34.50 46 2.60 2 35.22 59 2.55 3 36.23 96 2.48 5 37.02 52 2.43 2 37.65 53 2.39 3 39.48 84 2.28 4
Preparation of Form XI
(163) The present invention provides a method for preparing form XI of vilanterol trifenatate comprising:
(164) m1) suspending vilanterol trifenatate form II in binary mixture, preferably 50:50 of cyclohexane:2-methyltetrahydrofuran, preferably in 24 vol.,
(165) m2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(166) m3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(167) m4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
m5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
m6) isolating new crystalline form XI, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form XII
(168) This invention discloses a new crystalline form of vilanterol trifenatate designated orm XII, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 13.84°; 14.86°; 17.01′; 19.76° and 22.00°.
(169) New form XII of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(170) TABLE-US-00014 TABLE 13 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form XII. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 5.61 480 15.75 12 6.01 837 14.70 21 6.89 396 12.83 10 9.44 1081 9.37 27 10.77 1120 8.22 28 11.30 4029 7.83 100 11.69 543 7.57 13 12.11 450 7.31 11 12.56 605 7.05 15 13.84 4025 6.40 100 14.36 513 6.17 13 14.86 1086 5.96 27 16.22 435 5.46 11 16.59 202 5.34 5 17.01 2000 5.21 50 17.36 172 5.11 4 17.64 241 5.03 6 18.31 1491 4.85 37 18.56 229 4.78 6 18.80 170 4.72 4 19.18 182 4.63 5 19.56 630 4.54 16 19.76 1534 4.49 38 20.83 1813 4.26 45 21.09 973 4.21 24 21.51 1459 4.13 36 21.69 1994 4.10 49 22.00 1176 4.04 29 22.26 302 3.99 8 22.92 165 3.88 4 23.27 954 3.82 24 23.81 124 3.74 3 24.18 184 3.68 5 24.52 993 3.63 25 24.68 464 3.61 12 25.19 1660 3.54 41 25.90 76 3.44 2 26.32 124 3.39 3 27.08 825 3.29 20 27.50 320 3.24 8 27.99 153 3.19 4 28.67 145 3.11 4 28.90 155 3.09 4 29.23 340 3.05 8 29.37 503 3.04 12 29.79 140 3.00 3 30.17 231 2.96 6 31.23 131 2.86 3 31.54 103 2.84 3 31.83 4 2.81 0 32.43 51 2.76 1 33.12 85 2.70 2 33.64 251 2.66 6 34.56 54 2.60 1 35.21 91 2.55 2 35.59 203 2.52 5 36.90 182 2.44 5 37.25 88 2.41 2 38.58 223 2.33 6 39.59 350 2.28 9
Preparation of form XII
(171) The present invention moreover provides a method for preparing form XII of vilanterol trifenatate comprising:
(172) n1) suspending vilanterol trifenatate form II in a binary mixture, preferably 50:50 of heptane: 1,2-dimethoxyethane, preferably in 24 vol.,
(173) n2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(174) n3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(175) n4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
n5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
n6) isolating new crystalline form XII, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form XIII
(176) This invention also discloses a new crystalline form of vilanterol trifenatate designated form XIII, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 9.76°; 16.78°; 18.40°; 18.60° and 21.08°.
(177) New form XIII of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(178) TABLE-US-00015 TABLE 14 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form XIII. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 6.27 358 14.10 20 7.05 85 12.55 5 9.76 371 9.06 20 11.09 178 7.98 10 11.66 1012 7.59 56 11.87 305 7.46 17 12.29 249 7.20 14 12.96 218 6.83 12 13.40 329 6.61 18 14.00 1818 6.32 100 14.50 455 6.11 25 15.16 566 5.84 31 16.78 437 5.29 24 17.44 349 5.09 19 18.40 960 4.82 53 18.60 525 4.77 29 18.96 314 4.68 17 19.71 340 4.50 19 19.94 839 4.45 46 20.23 497 4.39 27 20.97 1356 4.24 75 21.08 1424 4.22 78 21.47 799 4.14 44 21.69 1749 4.10 96 22.09 1024 4.02 56 22.30 1129 3.99 62 22.99 243 3.87 13 23.37 682 3.81 38 24.14 231 3.69 13 24.53 675 3.63 37 24.69 824 3.61 45 25.22 916 3.53 50 25.47 462 3.50 25 25.81 301 3.45 17 26.37 258 3.38 14 27.20 211 3.28 12 27.58 341 3.23 19 28.04 182 3.18 10 28.44 104 3.14 6 29.17 315 3.06 17 29.38 408 3.04 22 29.83 146 2.99 8 30.29 86 2.95 5 31.38 91 2.85 5 31.73 105 2.82 6 32.17 134 2.78 7 34.16 95 2.63 5 34.82 148 2.58 8 35.12 202 2.56 11 36.19 88 2.48 5 36.86 60 2.44 3 37.28 147 2.41 8 37.69 74 2.39 4 38.67 72 2.33 4
Preparation of Form XIII
(179) The present invention provides a method for preparing form XIII of vilanterol trifenatate comprising:
(180) o1) suspending vilanterol trifenatate form II in a binary mixture, preferably 50:50 of cyclohexane:methylethylketone or heptane:methylethylketone or mesitylene:methylethylketone, preferably in 24 vol.,
(181) o2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(182) o3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(183) o4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
o5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
o6) isolating new crystalline form XIII, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Vilanterol Trifenatate Form XIV
(184) This invention further discloses a new crystalline form of vilanterol trifenatate designated form XIV, characterized by an X-ray powder diffraction pattern having the following characteristic diffraction angles (2Theta): 7.51°; 7.96°; 15.25°; 23.03° and 23.44°.
(185) New form XIV of vilanterol trifenatate has an X-ray powder diffraction pattern as depicted in
(186) TABLE-US-00016 TABLE 15 X-ray powder diffraction peak list of vilanterol trifenatate crystalline form XIV. Angle 2θ (°) Height [cts] d value (Å) Intensity (%) 7.51 586 11.77 11 7.96 713 11.11 14 8.64 420 10.24 8 9.61 213 9.20 4 10.87 280 8.14 5 11.37 481 7.78 9 12.56 147 7.05 3 13.28 602 6.67 12 13.86 353 6.39 7 15.25 2477 5.81 48 15.91 570 5.57 11 17.17 1436 5.17 28 17.48 505 5.07 10 18.52 1116 4.79 22 18.94 3156 4.69 61 19.60 486 4.53 9 20.18 283 4.40 5 20.75 751 4.28 15 21.07 682 4.22 13 21.50 1272 4.13 25 21.67 1303 4.10 25 22.00 387 4.04 8 22.48 106 3.96 2 23.03 4448 3.86 86 23.44 5151 3.80 100 23.76 337 3.75 7 24.36 248 3.65 5 24.74 684 3.60 13 25.24 109 3.53 2 25.60 315 3.48 6 26.23 1525 3.40 30 26.50 1392 3.36 27 27.00 162 3.30 3 28.23 335 3.16 7 28.91 197 3.09 4 29.21 151 3.06 3 30.09 505 2.97 10 30.94 302 2.89 6 31.48 365 2.84 7 31.97 381 2.80 7 33.60 152 2.67 3 33.99 146 2.64 3 34.55 89 2.60 2 34.96 178 2.57 3 35.54 186 2.53 4 35.88 477 2.50 9 37.41 117 2.40 2 38.54 44 2.34 1 39.42 29 2.29 1
Preparation of Form XIV
(187) The present invention provides a method for preparing form XIV of vilanterol trifenatate comprising:
(188) p1) suspending vilanterol trifenatate form III in methylcyclohexane, preferably in 24 vol.,
(189) p2) heating the suspension preferably up to 50° C., preferably at a rate about 20° C./hour and preferably stir,
(190) p3) cooling down the suspension preferably to 10° C., preferably at a rate about 20° C./hour and preferably stir,
(191) p4) optionally, heating the suspension preferably up to 50° C., preferably at a rate about 10° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 10° C./hour and preferably stir, heating the suspension preferably up to 50° C., preferably at a rate about 5° C./hour and preferably stir, cooling down the suspension preferably to 10° C., preferably at a rate about 5° C./hour and preferably stir,
p5) heating the suspension preferably up to 25° C., preferably at a rate about 10° C./hour and preferably stir,
p6) isolating new crystalline form XIV, preferably by filtration preferably under reduced pressure and optionally followed by drying or optionally by spray drying the suspension.
Advantages of Differentiated Solubility and Other Properties of the New Polymorphic Forms
(192) Surprisingly, it has been found that the processes of this invention afford new crystalline forms of vilanterol trifenatate that present favorable physical properties, such as differentiated solubility, particle morphology, low hygroscopicity and/or improved stability.
(193) A summary of the solubilities of the polymorphs II and III, compound to known Form I, in various solvents is provided hereinbelow in Example 8.
(194) A summary of other properties of the polymorphs of the invention is provided in Table 18, below. In table 18, polymorphs IV to XIV of the invention are indicated by Forms 4 to 14, respectively; and ‘np’ indicates test not performed.
(195) TABLE-US-00017 TABLE 18 Summary of properties of polymorphs IV to XIV of the invention Analysis Form 4 Form 5 Form 6 Crystallization SLHT(50PC1 + cooling SLHT(50° C.) + cooling SLHT(50° C.) + cooling to 20° C. to 20° C. to 25° C. + SLRT (25° C.) (0.5° C./min) + SLRT (0.5° C./min) + SLRT from 2- (20° C.) (20° C.) Propanol from Cyclohexane from Methylcyclohexane XRPD Form 4 Form 5 Form 6 DSC (onset) endo. 76° C. melting endo. 55-100° C. solvent loss endo. 65° C. solvent loss endo. 189° C. degradation endo. 134° C. Form 1 endo. 80° C. solvent loss + melting Form 2 melting endo. 188° C. degradation TGA Three consecutive Two consecutive weight One weight loss of 73% solvent losses; approx.. losses; overall loss of w/w 2-Propanol overall loss of 40% w/w/ 59% w/w Cyclohexane Methylcyclohexane EGA Cyclohexane Methylcyclohexane 2-Propanol Stability test Form 2 Form 2 Form 12 (exposed sample 16 h) Stability test Form 12 Strong crystanllinity Form 6 (sealed vial 18 h) decrease Stability test (25° C. 60% Np Np Form 1 (almost RH-7 d) completely) Stability test (60° C. 75% Np Np Amorphous RH-3 d) Hygroscopically (DVS) Np Np Slightly hygroscopic XRPD after DVS Np Np Form 6 Analysis Form 7 Form 8 Form 9 Form 10 Crystallization EXP 1: SLHT(50° C.) + SLHT (50° C.) + EXP 1: SLHT SLHT (50° C.) + cooling to 25° C. + cooling to 25° C. + (50° C.) + cooling to cooling to 25° C. + SLRT (25° C.) from SLRT (25° C.) from 25° C. + S:RT (25° C.) SLRT (25° C.) from 3-Methyl-I-Butanol Anisole from Nitromethane 50:50 EXP 2: SLVT from EXP 2: SLVT from Cyclohexane:Ethanol 3-Methyl-I-Butanol Nitromethane XRPD EXP 1 = EXP 2 = Form 8 EXP 1: New Form 10 Mixture of Form Pattern 11 and Form 12 EXP 2: Form 9 DSC (onset) Np endo. 66° C. solvent loss endo. 68° C. solvent loss endo. 69° C. solvent endo. 136° C. solvent endo. 100° C. solvent loss + melting loss + melting loss + melting endo. 188° C. endo. 191° C. endo. 188° C. degradation degradation degradation TGA Np Two consecutive Two consecutive Two consecutive weight losses; weight losses; weight losses; overall weight loss overall loss of overall loss of of approx.. 68% 71% w/w 60% w/w Ethanol w/w Anisole Nitromethane EGA Np Anisole Nitromethane Ethanol Stability test Np Form 8 Form 9 Form 10 (exposed sample 16 h) Stability test Np Form 8 Form 9 Form 10 (sealed vial 18 h) Stability test (25° C. Np Strong crystallinity Form 9 Conversion to 60% RH-7 d) decrease (Form 12 Form 1 conversion supposed) Stability test (60° C. Np Partial conversion Partial conversion Conversion to 75% RH-3 d) to Form 12 to Form 1 Form 1 XRPD after Grinding Np Strong crystallinity Amorphous Amorphous decrease (partial conversion to Form 12) Hygroscopically Np Not hygroscopic Slightly Slightly (DVS) hygroscopic hygroscopic XRPD after DVS Np Form 8 Low crystallinity Conversion to degree Form 1 Analysis Form 11 Form 12 Form 13 Form 14 Crystallization SLHT (50° C.) + cooling to SLHT (50° C.) + SLVT from 50:50 SLVT from 25° C. + SLRT (25° C.) cooling to 25° C. + Mesitylene/Methyl Methylcyclohexane from 50:50 SLRT (25° C.) from ethyl ketone Cyclohexane:2- 50:50 Heptane:1.2- Methyltetrahydrofuran Dimethoxyethane XRPD Form 11 Form 12 Form 13 Form 14 DSC (onset) endo. 50-100° C. solvent loss endo. 21° C. solvent loss endo. 54° C. solvent loss endo. 58° C. solvent loss endo. 135° C. Form 1 endo. 134° C. Form 1 endo. 83° C. solvent loss endo. 80° C. solvent melting melting exo. 93° C. loss + Form 3 endo. 188.6° C. endo. 189° C. recrystallization melting degradation degradation endo. 105° C. melting endo. 120° C. solvent loss endo. 189° C. degradation TGA Four consecutive One loss of 61.6% One loss of 34% Several weight losses; overall w/w Water and w/w Water and consecutive weight loss of 51% w/w 1.2-Dimethoxyethane Mesitylene losses; overall one Cyclohexane and 2- loss of 26% w/w Methyltetrahydrofuran Methylcyclohexane EGA Cyclohexane and 2- Water and 1.2- Water and Methylcyclohexane Methyltetrahydrofuran Dimethoxyethane Mesitylene Stability test Form 11 Form 12 Form 12 Form 3 (exposed sample 16 h) Stability test Form 11 Form 12 Form 12 (almost Form 3 (almost (sealed vial 18 h) completely) completely) Stability test Form 1 (start Form 1 (almost Np Np (25° C. 60% RH- conversion) completely) 7 d) Stability test Form 1 (almost Form 1 (almost Np Np (60° C. 75% RH- completely) completely 3 d) XRPD after Form 12 Amorphous (few Np Np Grinding signal of Form 12) Hygroscopically Slightly hygroscopic Slightly Np Np (DVS) hygroscopic XRPD after DVS Ascribable to Form 11 Ascribable to Np Np Form 1
Pharmaceutical Use and Formulations
(196) The present invention further provides a method for the preparation of vilanterol trifenatate having a particle size suitable for inhalation, which method comprises providing a polymorphorph having the characteristics defined herein, in particular, form II, form III, form IV, form V, form, VI, form VII, form VIII, form IX, form X, form XI, form XII, form XIII or form XIV, or any combination thereof, and modifying the particle size to that suitable for inhalation.
(197) For example, any one or more of vilanterol trifenatate forms II to XIV, obtained according to the present invention, is/are preferably micronized to obtain material having a particle size suitable for inhalation, preferably having a Dv90 less than 10 microns, more preferably less than 5 microns.
(198) Therefore, the present invention also provides a micronization process for tailoring the particle size of a vilanterol trifenatate form whilst maintaining its crystalline form, which process comprises providing a polymorphorph having the characteristics defined herein, in particular, form H, form III, form IV, form V, form, VI, form VII, form VIII, form IX, form X, form XI, form XII, form XIII or form XIV, or any combination thereof, and modifying the particle size to that suitable for inhalation.
(199) The present invention further provides a vilanterol trifenatate crystalline form as defined herein for use in medicine, particularly for use as a beta2 adrenoreceptor agonist, especially as a selective long-acting such agonist (LABA) and/or for use in the treatment of COPD, including chronic bronchitis and emphysema, and asthma.
(200) The present invention still further provides the use of a vilanterol trifenatate crystalline form as defined herein in the preparation of a medicament, particularly wherein the medicament is for use as a beta2 adrenoreceptor agonist, especially as a selective long-acting beta2 adrenoreceptor agonist (LABA) and/or for use in the treatment of COPD, including chronic bronchitis and emphysema, and asthma.
(201) The present invention also provides a method of treatment of a condition benefitting from or requiring administration of a beta2 adrenoreceptor such agonist (LABA), which method comprises administration to a patient in need thereof of an effective amount of a vilanterol trifenatate crystalline form as defined herein. Preferred conditions include COPD, including chronic bronchitis and emphysema, and asthma.
(202) The present invention in another aspect provides a pharmaceutical composition comprising a vilanterol trifenatate crystalline form as defined herein in association with a pharmaceutically acceptable carrier therefor and optionally one or more additional active pharmaceutical ingredient(s) (APIs). Preferred additional APIs include fluticasone furoate and/or umeclidinium bromide.
(203) The pharmaceutical compositions of the present invention may be presented in any form known in the art of pharmacy and suitable for these APIs and their purpose. In particular, such compositions may be suitable for inhalation, such as in powdered form, deliverable from foil-wrapped blisters. More preferably, the compositions of the present invention are in the form of micronized powders, having a particle size suitable for inhalation, preferably having a Dv90 less than 10 microns, e.g. less than 5 microns.
(204) Especially preferred is when the compositions of the present invention are provided in association with instructions for use thereof, optionally including dosage information, dosing regime instructions and the like. Conveniently, the compositions of the present invention, together with any medical device such as inhalers, are packaged together in outer packaging which may include a carton, box or other suitable container for the composition and instructions.
EXAMPLES
(205) The following examples are provided further to illustrate the new polymorphic forms and the processes of the present invention, and are not intended to be construed as limitations of the present invention; minor variations may be resorted to without departing from the spirit and scope of the present invention. Throughout this specification, any aspect, whether general, a sub-genus or specific, may be combined with any other aspect, as would be understood by a person skilled in this art.
Example 1: Preparation of Crystalline Form II of Vilanterol Trifenate
(206) 30 g of vilanterol trifenatate form I are suspended in 900 mL of acetone and the suspension heated up to 45° C. The clear solution is stirred for 2 h at a temperature up to 45° C. 90 mL of water is added to the clear solution and left to stir for 2 h at a temperature up to 45° C. The clear solution is slowly cooled down to a temperature of about 5-0° C. The crystalline form II is isolated by filtration under reduced pressure, and dried under reduced pressure at a temperature up to 50° C. Yield: 22.79 g (76% w/w).
Example 2: Preparation of Crystalline Form II of Vilanterol Trifenate with Seed
(207) 2.5 g of vilanterol trifenatate form I are suspended in 75 mL of acetone and the suspension heated up to 45° C. The clear solution is stirred for 2 h at a temperature up to 45° C. 90 mL of water is added to the clear solution and left to stir for 2 h at a temperature up to 45° C. The clear solution is slowly cooled down to a temperature of about 5-0° C. and a seed of crystalline form II added. The crystalline form II is isolated by filtration under reduced pressure, and dried under reduced pressure at a temperature up to 40° C. Yield: 1.39 g (56% w/w).
Example 3: Preparation of Crystalline Form III of Vilanterol Trifenate
(208) 1 g of vilanterol trifenatate form II and III is suspended in 5 mL of water and the suspension stirred at a temperature up to 25° C. The crystalline form III is isolated by filtration under reduced pressure, and dried under reduced pressure at a temperature up to 40° C. Yield: 0.72 g (72% w/w).
Example 4: Preparation of Crystalline Form III of Vilanterol Trifenate with Seed
(209) 15 g of vilanterol trifenatate form I are suspended in 450 mL of acetone and the suspension heated up to 45° C. The clear solution is stirred for 2 h at a temperature up to 45° C. 90 mL of water is added to the clear solution and left to stir for 2 h at a temperature up to 45° C. The clear solution is slowly cooled down to a temperature of about 5-0° C. and a seed of crystalline form III added. The crystalline form III is isolated by filtration under reduced pressure, and dried under reduced pressure at a temperature up to 50° C. Yield: 11.36 g (76% w/w).
Comparative Example 5: Micronization of Vilanterol Trifenatate Form I
(210) Vilanterol trifenatate form I (15.0 g) was fed to a fluid energy jet mill at 19 g/h, operated with N.sub.2 at a pressure of 1 bar for the venturi and a pressure of 1 bar for the ring.
(211) The isolated product isolated presented an XRPD identical to that of the starting material with a particle size distribution of Dv50=4.2 μm; Dv90=9.6 μm.
Example 6: Micronization of Vilanterol Trifenatate Form II
(212) Vilanterol trifenatate form II is fed to a fluid energy jet mill at 10-100 g/h, operated with N.sub.2 at a pressure of 1 to 8 bar for the venturi and a pressure of 1 to 8 bar for the ring.
(213) The isolated product presents an XRPD identical to the one of the starting material with a particle size distribution of Dv90 below 10 μm, i.e. comparable to known form I.
Example 7: Micronization of Vilanterol Trifenatate Form III
(214) Vilanterol trifenatate form III is fed to a fluid energy jet mill at 10-100 g/h, operated with N.sub.2 at a pressure of 1 to 8 bar for the venturi and a pressure of 1 to 8 bar for the ring.
(215) The isolated product presents an XRPD identical to the one of the starting material with a particle size distribution of Dv90 below 10 μm, i.e. comparable to known form I.
Example 8: Solubilities of Forms II and III of the Invention and Comparative Data for Form I
(216) Visual solubility of certain forms (compounds) in differing solvents was assessed according to the procedure described in the European Pharmacopeia 6.0 section 5.11. p. 659 (indicated in Table 19).
(217) 8.1 Methodology
(218) 8.1.1 Dissolving Procedure
(219) The compound was shaken vigorously for 1 min and placed in a constant temperature device for 15 min at 25.0±0.5° C. If the compound was not completely dissolved, the shaking was repeated for 1 min and the tube placed in a constant temperature device for 15 min.
(220) 8.1.2 Method
(221) 50 mg of compound was weighed in a stoppered tube, 0.05 mL of the solvent added and the Dissolving Procedure (see above) followed. If the compound was completely dissolved, it is very soluble.
(222) If the compound was not completely dissolved, a further 0.45 mL of the solvent was added and the Dissolving Procedure (see above) followed. If the compound was completely dissolved, it is freely soluble.
(223) If the compound was still not completely dissolved, still further 1.0 mL of the solvent was added and the Dissolving Procedure (see above) followed. If the compound was completely dissolved, it is soluble.
(224) If the compound was still not completely dissolved, another 3.5 mL of the solvent was added and the Dissolving Procedure (see above) followed. If the compound was completely dissolved, it is sparingly soluble.
(225) If the compound was still not completely dissolved, the compound is slightly soluble or very slightly soluble. In this case, and the suspension was heated up to the boiling point (max 80° C.) under stirring to verify the solubility at high temperature. The hot solution was afterwards cooled to room temperature to observe whether the compound precipitates. If the compound at room temperature was completely dissolved, it is soluble at high temperature.
(226) TABLE-US-00018 TABLE 19 Solubility ranges description Parts of solvent needed Solubility Descriptive terms Abbreviation for 1 part solute (mg/mL) Very soluble <1 >1000 Freely soluble FS 1-10 100-1000 Soluble S 10-30 33-100 Sparingly soluble SS 30-100 10-33 Slightly soluble VSS 100-1000 1-10 Very slightly soluble 1000-10000 1-0.1 Insoluble INS >10000 <0.1
8.2 Results
(227) Forms I, II and III of vilanterol trifenatate are soluble in methanol at 25° C.
(228) Forms I and III of vilanterol trifenatate are sparingly soluble in ethanol at 25° C.
(229) Form II of vilanterol trifenatate is sparingly soluble in ethanol at 50° C.
(230) Forms I and II of vilanterol trifenatate are freely soluble in tetrahydrofuran (THF) at 25° C.
(231) Form III of vilanterol trifenatate is sparingly soluble in THF at 25° C.
(232) Form I of vilanterol trifenatate is freely soluble in 1,4-dioxane at 25° C.
(233) Form II of vilanterol trifenatate is soluble in 1,4-dioxane at 25° C.
(234) Form III of vilanterol trifenatate is sparingly soluble in 1,4-dioxane at 25° C.
(235) Forms I, II and III of vilanterol trifenatate are insoluble in water at 75° C.
Example 9: Comparison of Hygroscopicity of New Form II with Form I
(236) Hygroscopicity of a sample of each of new form II and comparative form I was determined using the protocol provided below in conditions of 80% RH and 25° C. Both samples of new form II and form I treated under these conditions showed stability after DVS analysis (as provided in the protocol below) in comparison with an untreated sample.
(237) In the case of form I, data recorded by DVS analysis showed a mass increased percentage of 0.19% whereas that for new polymorph II showed an improved massed increased percentage of 0.04%. Therefore, although both forms can be classified as non-hygroscopic, form II shows a difference in hygroscopicity which, under certain conditions of handling or processing, is significant, as discussed hereinabove.
(238) Furthermore, after DVS analysis of a sample of form III, the XRPD pattern shows no significant modifications as shown in
Example 10: Comparison of Storage Stability of New Forms II and III with Form I
(239) Approximately 30 mg of exposed powder of comparative form 1 and new forms II and III, respectively, were stored at 25′C and 60% RH for seven days. Each powder was then analyzed by XRPD and its diffraction pattern was compared with that of untreated sample. No significant modifications in XRPD pattern were observed, as shown in the
(240) Instrument Parameters & General Experimental Protocols
(241) FT-Raman Spectroscopy
(242) Raman spectra were recorded with a Nicolet iS50 FT-IR Spectrometer The excitation source was a Nd-YAG laser (1064 nm) in the backscattering (180°) configuration. The focused laser beam diameter was approx. 50 mm and the spectral resolution 4 cm-1. The spectra were recorded with a laser power at the sample of approx. 100 mW.
(243) HPLC—High Performance Liquid Chromatography
(244) The HPLC analysis was conducted using a waters system under the following conditions:
(245) Column: waters symmetry shield rp18 4.6×150 mm 3.5 micra
(246) Flow rate: 0.8 ml/min
(247) Injection volume: 10 ul
(248) Temperature: 30° c.
(249) Solvents a: H.sub.2O (0.1% tfa)
(250) Solvent b: CH.sub.3CN
(251) The gradient elution method as follows:
(252) TABLE-US-00019 Time Flow Mobile phase Mobile phase (min.) (ml/min.) a (%) b (%) 0.01 0.80 85.0 15.0 0.10 0.80 85.0 15.0 36.00 0.80 20.0 80.0 42.00 0.80 20.0 80.0 42.10 0.80 85.0 15.0 50.00 0.80 85.0 15.0
XRPD—X-Ray Powder Diffraction
(253) The X-ray powder patterns were recorded using the PANalytical X'Pert PRO X-ray diffraction system equipped with a PW3373/00 Cu LFF DK184511 X-Ray tube and a X'Celerator RTMS (Real Time Multiple Strip) detector under the following conditions:
(254) TABLE-US-00020 Measurement details Measurement type: Single Scan Sample mode Reflection Voltage (kV): 40 Current (mA): 40 Sample Movement mode Spinning Rotation time (s): 1.0 Scan Scan axis: Gonio Scan mode: Continuous Scan range: 3.0010-39.9997 Step size (°): 0.0167 Counting time (s): 12.700 N.sup.o of points: 2214 Used wavelength Intended wavelength type: Kα1 Kα1 (A): 1,540598 Kα2 (A): 1,544426 Kα2/Kα1 intensity ratio: 0,50 Kα (A): 1,541874 Kα (A): 1,392250 Incident beam path Radius (mm): 240.0 Soller slit 0.04 rad Mask 15 mm Divergent slit 1/4° Anti-scatter slit 1/2° Diffracted beam path Anti-scatter slit 5.0 mm Filter Nickel Soller slit 0.04 rad Detector X'Celerator Mode Scanning Active length (2Theta) 2.122°
DSC—Differential Scanning Calorimetry
(255) The analysis was carried out using a DSC Q200 TA instruments equipped with a refrigerator cooling system (RCS40) and autosampler.
(256) The sample was weighed in an aluminum hermetic pan with pinhole. The analysis was performed heating the sample from 25° C. to 350° C. at 10° C./min.
(257) TGA—Thermal Gravimetric Analysis
(258) The analysis was carried out using the Mettler Toledo TGA/DSC1.
(259) The sample was weighed in an aluminum pan hermetically sealed with an aluminum pierced cover. The analysis was performed heating the sample from 25° C. to 320° C. at 10° C./min. TGA-FTIR coupled with Thermo Nicoled is 10 spectometer.
(260) TGA-EGA ThermoGravimetric Analysis-Evolution Gas Analysis
(261) The analysis was carried out using the mettler toledo TGA/DSC1. The sample was weighed in an aluminum pan hermetically sealed with an aluminum pierced cover. The analysis was performed heating the sample from 25° C. to 320° C. at 10° C./min. The evolved gas is compared with ft-ir spectra database for identification.
(262) DVS—Dynamic Vapor Sorption
(263) The sample was subjected to DVS measuring using SMS-DVS intrinsic. The kinetic moisture sorption measurement was performed at 25° C. and in a RH % range described in the following: From 40% RH to 90% RH Form 90% RH to 0% RH From 0% RH to 90% RH From 90% RH to 0% RH
(264) The sample was analyzed by XRPD after the analysis.
(265) Hygroscopicity
(266) The hygroscopicity of the sample was determined using the method reported in the academic article “Efficient throughput method for hygroscopicity classification of an active and inactive pharmaceutical ingredients by water vapor sorption analysis” V. Murikipudi et al., Pharmaceutical Development and Technology, 2013, 18(2): 348-358.
(267) The hygroscopicity was calculated using the following equation:
% Weight Change=[(W2−W1)/W1]*100
W1: weight of sample at the start of the experiment (25° C. and 40% RH)
W2: weight of sample at 25° C. and 80% RH in the first absorption cycle
(268) TABLE-US-00021 EP 7.0 CLASSIFICATION CRITERIA Non hygroscopic Increase in mass is less than 0.2% Slightly hygroscopic Increase in mass is less than 2% and equal to or greater than 0.2% Hygroscopic Increase in mass is less than 15% and equal to or greater than 2% Very Hygroscopic Increase in mass is equal to or greater than 15% Deliquescent Sufficient water is absorbed to form a liquid
SUMMARY
(269) Therefore, herein has been described, inter alia: A. A crystalline form II of vilanterol trifenatate characterized by a x-ray powder diffraction pattern as depicted in