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:
May. 07, 1991
Filed:
Dec. 04, 1989
Applicant:
Inventors:
Kimiaki Hayashi, Suita, JP;
Hitoshi Kubota, Ashiya, JP;
Assignee:
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548320 ;
Abstract
Disclosed are a process for preparing an optically active 2-oxoimidazolidine derivative of the formula: ##STR1## wherein R.sup.1 represents hydrogen atom or a lower alkyl group, according to the process described in the specification; and a 3-acyl-2-oxoimidazolidine-4-carboxylin acid ester derivative having (S, R) configuration of the formula: ##STR2## wherein R.sup.2 represents a tert-butyl group or a benzyl group, and R.sup.3 represents a lower alkyl group or an aryl group.