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. 21, 1994
Filed:
Jan. 11, 1993
Applicant:
Inventors:
Assignee:
Sumitomo Pharmaceuticals Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548453 ;
Abstract
Pyrrolidine derivatives of the formula (1): ##STR1## wherein R is a protective group of the amino group, intermediates for constructing the 2-positioned side chain of antibacterial penem and carbapenem compounds, are prepared by allowing ##STR2## to react with active esterifying agents in the presence of a base, further allowing the product to react with hydrogen sulfide in the presence of a base and then treating the product with a base.