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:
Sep. 27, 1977
Filed:
Jul. 03, 1975
Applicant:
Inventors:
Hiroaki Yanagisawa, Tokyo, JA;
Akiko Ando, Tokyo, JA;
Masami Fukushima, Tokyo, JA;
Hideo Nakao, Tokyo, JA;
Assignee:
Sankyo Company Limited, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
542420 ; 2602391 ; 544 21 ;
Abstract
Process for preparing 7-alkoxy cephalosporins useful as intermediates for various cephalosporin or penicillin derivatives which comprises reacting 7-benzylideneaminocephem or 6-benzylideneaminopenam compounds with a halide cation-producing compound in the presence of an alcohol and a base capable of forming a salt with a phenolic hydroxyl group or converting a phenolic hydroxyl group to phenolate ion.