Patents Represented by Attorney, Agent or Law Firm Jayadeep R. Deshmukh, E - Justia Patents Search

Patents Represented by Attorney, Agent or Law Firm Jayadeep R. Deshmukh, E

One-pot synthesis of alkyl 3-cyclopropylamino-2-[2,4-dibromo-3-(difluromethoxy) benzoyl]-2-propenoate as a useful intermediate for antibacterial quinolone medicaments

Patent number: 6835848

Abstract: The present invention relates to a new and industrially advantageous one-pot process for the preparation of alkyl 3-cyclopropyl amino-2-[2,4-dibromo-3-(difluoromethoxy) benzoyl]-2-propenoates of in which R represents methyl or ethyl, which are valuable intermediates for the production of highly active antibacterial quinolone medicaments.

Type: Grant

Filed: January 6, 2003

Date of Patent: December 28, 2004

Assignees: Ranbaxy Laboratories Limited, Toyama Chemical Co., Ltd.

Inventors: Prosenjit Bose, Naresh Kumar, Taro Kiyoto