Patent classifications
C07C229/42
Method of synthesizing diclofenac sodium
The invention relates to the chemical synthesis of pharmaceutical API, and specifically to a method of synthesizing diclofenac sodium, which is a kind of nonsteroidal anti-inflammatory drug for relieving pain. The method includes: nitrating phenylacetate to prepare o-nitrophenylacetate (2); hydrogenating o-nitrophenylacetate (2) to prepare o-aminophenylacetate (3); amidating an amino group of o-aminophenylacetate (3) to obtain 2-(2-benzoylaminophenyl) acetate (4); 2-(2-benzoylaminophenyl) acetate (4) reacting with thionyl chloride to prepare a chloroimine intermediate, and then condensing the intermediate of chloroimine with 2,6-dichlorophenol using an inorganic base to prepare (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5); subjecting (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5) to Chapman rearrangement to afford methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6); and hydrolyzing methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6) to provide the target compound as of diclofenac sodium API. The overall yield is up to 67% based on methyl phenylacetate.
MODULATORS OF INDOLEAMINE 2,3-DIOXYGENASE
Provided are IDO inhibitor compounds of Formula I and pharmaceutically acceptable salts thereof, their pharmaceutical compositions, their methods of preparation, and methods for their use in the prevention and/or treatment of diseases such as chronic viral infection, chronic bacterial infections, cancer, sepsis or a neurological disorder.
##STR00001##
MODULATORS OF INDOLEAMINE 2,3-DIOXYGENASE
Provided are IDO inhibitor compounds of Formula I and pharmaceutically acceptable salts thereof, their pharmaceutical compositions, their methods of preparation, and methods for their use in the prevention and/or treatment of diseases such as chronic viral infection, chronic bacterial infections, cancer, sepsis or a neurological disorder.
##STR00001##
INHIBITORS OF INDOLEAMINE 2,3-DIOXYGENASE AND METHODS OF THEIR USE
There are disclosed compounds that modulate or inhibit the enzymatic activity of indoleamine 2,3-dioxygenase (IDO), pharmaceutical compositions containing said compounds and methods of treating proliferative disorders, such as cancer, viral infections and/or inflammatory disorders utilizing the compounds of the disclosure.
Unique dual-action therapeutics
A new family of therapeutics which provides a controlled-release delivery platform for non-steroidal anti-inflammatory agents on an ester or an ester-carbonate backbone is disclosed herein. These agents are reversible inhibitors of acetylcholinesterase and are thus useful for clinical conditions benefiting from inflammation suppression and cholinergic intervention. These compounds are of the general formula wherein n=0, 1; X=C, Si, and N+ and NSAID=ibuprofen, naproxen, indomethacin and diclofenac. Other embodiments are also disclosed. ##STR00001##
Unique dual-action therapeutics
A new family of therapeutics which provides a controlled-release delivery platform for non-steroidal anti-inflammatory agents on an ester or an ester-carbonate backbone is disclosed herein. These agents are reversible inhibitors of acetylcholinesterase and are thus useful for clinical conditions benefiting from inflammation suppression and cholinergic intervention. These compounds are of the general formula wherein n=0, 1; X=C, Si, and N+ and NSAID=ibuprofen, naproxen, indomethacin and diclofenac. Other embodiments are also disclosed. ##STR00001##
METHOD OF SYNTHESIZING DICLOFENAC SODIUM
The invention relates to the chemical synthesis of pharmaceutical API, and specifically to a method of synthesizing diclofenac sodium, which is a kind of nonsteroidal anti-inflammatory drug for relieving pain. The method includes: nitrating phenylacetate to prepare o-nitrophenylacetate (2); hydrogenating o-nitrophenylacetate (2) to prepare o-aminophenylacetate (3); amidating an amino group of o-aminophenylacetate (3) to obtain 2-(2-benzoylaminophenyl) acetate (4); 2-(2-benzoylaminophenyl) acetate (4) reacting with thionyl chloride to prepare a chloroimine intermediate, and then condensing the intermediate of chloroimine with 2,6-dichlorophenol using an inorganic base to prepare (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5); subjecting (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5) to Chapman rearrangement to afford methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6); and hydrolyzing methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6) to provide the target compound as of diclofenac sodium API. The overall yield is up to 67% based on methyl phenylacetate.
METHOD OF SYNTHESIZING DICLOFENAC SODIUM
The invention relates to the chemical synthesis of pharmaceutical API, and specifically to a method of synthesizing diclofenac sodium, which is a kind of nonsteroidal anti-inflammatory drug for relieving pain. The method includes: nitrating phenylacetate to prepare o-nitrophenylacetate (2); hydrogenating o-nitrophenylacetate (2) to prepare o-aminophenylacetate (3); amidating an amino group of o-aminophenylacetate (3) to obtain 2-(2-benzoylaminophenyl) acetate (4); 2-(2-benzoylaminophenyl) acetate (4) reacting with thionyl chloride to prepare a chloroimine intermediate, and then condensing the intermediate of chloroimine with 2,6-dichlorophenol using an inorganic base to prepare (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5); subjecting (E)-methyl-2-(2-((2,6-dichlorophenoxy)(phenyl)methyleneamino) phenyl ester (5) to Chapman rearrangement to afford methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6); and hydrolyzing methyl 2-(2-(N-(2,6-dichlorophenyl)benzoylamino)phenyl) ester (6) to provide the target compound as of diclofenac sodium API. The overall yield is up to 67% based on methyl phenylacetate.
RESIST COMPOSITION AND PATTERNING PROCESS
A resist composition comprising a base polymer and a quencher in the form of an amine compound having an iodized aromatic ring bonded to the nitrogen atom via a divalent hydrocarbon group offers a high sensitivity and minimal LWR or improved CDU, independent of whether it is of positive or negative tone.
CYCLOHEXYL GPR40 AGONISTS FOR THE TREATMENT OF TYPE II DIABETES
Disclosed are compounds, compositions and methods for treating of disorders that are affected by the modulation of the GPR40 receptor. Such compounds are represented by Formula (I) as follows:
##STR00001## wherein R.sup.1, R.sup.2, R.sup.3, A, W, L, R.sub.a, and G are defined herein:
and by Formula (II) as follows:
##STR00002##
wherein R.sup.1B, W.sub.B, L.sub.B, , and G.sub.B are defined herein.