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:
Mar. 14, 1978
Filed:
Feb. 17, 1976
Applicant:
Inventors:
Teruji Tsuji, Takatsuki, JA;
Yoshio Hamashima, Kyoto, JA;
Mitsuru Yoshioka, Toyonaka, JA;
Masayuki Narisada, Ibaraki, JA;
Hiroshi Tanida, Osaka, JA;
Taichiro Komeno, Osaka, JA;
Wataru Nagata, Nishinomiya, JA;
Assignee:
Shionogi & Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544133 ; 2602 / ; 2602 / ; 26029357 ; 260299 ; 2603085 ; 2603 / ; 2603 / ; 544 16 ; 544 18 ; 544 22 ; 544 14 ; 544 69 ;
Abstract
An intermediate represented by following formula for synthesizing 3-hydroxy-3-cephem compounds. ##STR1## wherein A and B each is a hydrogen or amino substituent; R is a hydrogen or thiol substituent; Hal is a halogen; X is a hydroxy or carboxy protecting group; the broken line between A and R shows that when R and B are hydrogens, and A is a carboxylic acyl, the substituents can be combined to form an azetidinothiazoline bicyclic ring; and the enamine derivatives thereof.