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:
Aug. 30, 2005
Filed:
Dec. 04, 2002
Pandurang Balwant Deshpande, Chennai, IN;
Senthil Kumar Udayampalayam Palanisamy, Tamilnadu, IN;
Gnanaprakasam Andrew, Chennai, IN;
Pandurang Balwant Deshpande, Chennai, IN;
Senthil Kumar Udayampalayam Palanisamy, Tamilnadu, IN;
Gnanaprakasam Andrew, Chennai, IN;
Orchid Chemicals and Pharmaceuticals Limited, Tamilnadu, IN (US);
Abstract
The present invention relates to a process for preparing 2α-methyl-2β-substituted methyl penam derivatives from cepham derivatives, more particularly the present invention provides a novel process for preparing 2β-heterocyclyl methyl penam derivatives of the formula (I)by reacting a cepham compound with a heterocylic amine to form an intermediate compound, and oxidizing the intermediate compound to produce the 2β-heterocyclyl methyl penam derivatives of the formula (I), wherein Rrepresents carboxylic acid protecting group; Rand Rmay be same or different and independently represent hydrogen, halogen, NH, acylamino, phthalimido with a proviso that both Rand Rare not NH, acylamino, phthalimido; Het represents a 5 or 6 membered nitrogen containing heterocycle ring system having one or more heteroatoms selected from O, S, or N.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile