The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2007
Filed:
Mar. 15, 2004
OM Dutt Tyagi, Pune, IN;
Dnyandev Ragho Rane, Pune, IN;
Tushar Kumar Srivastava, Pune, IN;
Krishnarao Tukaram Sirsath, Pune, IN;
Om Dutt Tyagi, Pune, IN;
Dnyandev Ragho Rane, Pune, IN;
Tushar Kumar Srivastava, Pune, IN;
Krishnarao Tukaram Sirsath, Pune, IN;
Lupin Ltd., Mumbai, IN;
Abstract
A process for preparation of 7-[D-α-amino-α-(4-hydroxyphenyl)acetamido]-3-(1-propen-1-yl)-3-cephem-4-carboxylic acid viz. Cefprozil of formula (I) in high purity, substantially free of impurities, which comprises preparation of mixed acid anhydride by selecting the sequence and temperature of addition of the reagents and its subsequent condensation with a protected 7-APCA; followed by hydrolysis, isolation and purification to give Cefprozil of formula (I) in the form of a monohydrate.
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