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:
May. 26, 1998
Filed:
Oct. 09, 1996
Jag Mohan Khanna, New Delhi, IN;
Naresh Kumar, New Delhi, IN;
Chandrahas Khanduri, New Delhi, IN;
Mukesh Kumar Sharma, New Delhi, IN;
Pankaj Sharma, New Delhi, IN;
Swargam Sathyanarayan, New Delhi, IN;
Girij Pal Singh, New Delhi, IN;
Ranbaxy Laboratories, Ltd., New Delhi, IN;
Abstract
A multistep process for producing 8-chloro-6-(2-fluorophenyl)-1-methyl-4-H-imidazo�1,5a!�1,4! benzodiazepine (midazolam) comprises treating a compound of Formula II with a lower alkyl dithiol to produce a compound of Formula III, wherein n=2 or 3, converting the compound of Formula III to a compound of Formula VII, and then treating the compound of Formula VII with a deprotecting agent, thereby producing midazolam. Novel intermediate compounds are also disclosed.