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:
Apr. 17, 1990
Filed:
Dec. 23, 1987
Yoshimitsu Nagao, Uji, JP;
Toshio Kumagai, Kawagoe, JP;
Satoshi Tamai, Komae, JP;
Yasuhiro Kuramoto, Shiki, JP;
Hisashi Shimidzu, Shiki, JP;
Lederle (Japan), Ltd., Tokyo, JP;
Abstract
An azetidin-2-one derivative represented by the following formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, an aryl group, an aralkyl group, a lower alkoxy group, aralkoxy group, a lower alkylthio group, an aralkylthio group, or a substituted amino group, R.sup.2 represents a hydrogen atom, a lower alkyl group, an aryl group or an aralkyl group, and R.sup.3 represents a hydrogen atom or a group of the formula ##STR2## in which R.sup.4 represents a hydrogen atom or a protective group for the hydroxyl group; and a process for production thereof.