Patent classifications
C
CHEMISTRY; METALLURGY
Load children
C07
ORGANIC CHEMISTRY
Load children
C07D
HETEROCYCLIC COMPOUNDS
Load children
501/00
Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/14
Compounds having a nitrogen atom directly attached in position 7
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/16
with a double bond between positions 2 and 3
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/20
7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/24
with hydrocarbon radicals, substituted by hetero atoms or hetero rings, attached in position 3
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/48
Methylene radicals, substituted by hetero rings
Load children Filter patents View analytics View as hierarchy Open in page
C07D501/54
with the 7-amino radical acylated by an araliphatic carboxylic acid, which is substituted on the aliphatic radical by hetero atoms
Filter patents View analytics View as hierarchy Open in page

C07D501/54

INTERMEDIATES IN THE SYNTHESIS OF CEPHALOSPORIN COMPOUNDS
20170226126 · 2017-08-10 · ·

Described herein are crystalline forms of a compound of formula (III.sup.−), including toluene solvates off A TD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane. Provided herein is a crystalline form of a compound of formula (III.sup.−): wherein X is CI, Br, or I; and R1 and R2 are each independently an oxygen protecting group; processes for making the crystalline form, and use of said form in the synthesis of antibacterial cephalosporins such as ceftolozane.

Intermediates in the synthesis of cephalosporin compounds
10941161 · 2021-03-09 · ·

Described herein are crystalline forms of a compound of formula (III), including toluene solvates of TATD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane.

Intermediates in the synthesis of cephalosporin compounds
10941161 · 2021-03-09 · ·

Described herein are crystalline forms of a compound of formula (III), including toluene solvates of TATD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane.

INTERMEDIATES IN THE SYNTHESIS OF CEPHALOSPORIN COMPOUNDS
20190225624 · 2019-07-25 · ·

Described herein are crystalline forms of a compound of formula (III), including toluene solvates of TATD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane.

INTERMEDIATES IN THE SYNTHESIS OF CEPHALOSPORIN COMPOUNDS
20190225624 · 2019-07-25 · ·

Described herein are crystalline forms of a compound of formula (III), including toluene solvates of TATD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane.

Intermediates in the synthesis of cephalosporin compounds
10221196 · 2019-03-05 · ·

Described herein are crystalline forms of a compound of formula (II), including toluene solvates off A TD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane. Provided herein is a crystalline form of a compound of formula (II): wherein X is CI, Br, or I; and R1 and R2 are each independently an oxygen protecting group; processes for making the crystalline form, and use of said form in the synthesis of antibacterial cephalosporins such as ceftolozane.