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:
Dec. 03, 1991
Filed:
Apr. 05, 1989
Applicant:
Inventors:
Michio Sasaoka, Tokushima, JP;
Nori Saito, Tokushima, JP;
Takashi Shiroi, Tokushima, JP;
Shigemitsu Nagao, Mobara, JP;
Ryo Kikuchi, Tokushima, JP;
Yutaka Kameyama, Tokushima, JP;
Assignee:
Otsuka Kagaku Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540214 ; 540222 ; 540225 ; 540227 ; 540300 ; 540301 ; 540310 ; 540318 ;
Abstract
This invention provides a method of producing a .beta.-lactam derivative represented by the formula (I): ##STR1## said method consisting essentially of the step of reacting a .beta.-lactam derivative represented by the formula (II): ##STR2## with a phenol in a reaction system which consists essentially of said .beta.-lactam derivative of formula (II) and said phenol.