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:
Nov. 25, 1986
Filed:
Jun. 03, 1985
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
540230 ; 540215 ; 540317 ;
Abstract
A high yield process for preparing beta-lactam antibiotics having a high purity degree, in particular derivatives of the cephalosporanic and penicillanic acids, of the formula: ##STR1## by condensation of the compounds ##STR2## where X.dbd.H --OCH.sub.3 (suitably blocked), with a chloride of the formula ##STR3## wherein R.dbd.H, OH in which said condensation is carried out in the presence of a nicotinic or isonicotinic base.