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. 10, 1992
Filed:
Aug. 03, 1990
Applicant:
Inventors:
Katuyuki Ohtuka, Nagareyama, JP;
Nobuo Ishiyama, Kusatsu, JP;
Yasuhito Iida, Otsu, JP;
Kenji Seri, Yashio, JP;
Takeshi Murai, Fujimi, JP;
Kazuko Sanai, Wako, JP;
Yoshihiro Ishizaka, Tokyo, JP;
Assignee:
Kaken Pharmaceutical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
5142335 ; 514456 ; 549404 ; 549399 ; 544151 ;
Abstract
A compound of the formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein: R.sup.1 is a hydrogen atom, a substituted or unsubstituted C.sub.1-6 alkyl group, a C.sub.2-6 alkenyl group, a C.sub.2-6 alkynyl group or a R.sup.7 --CO-- group (wherein R.sup.7 is a C.sub.1-6 alkyl group, a phenyl group, a C.sub.2-6 alkenyl group which may be substituted by a phenyl group, or a C.sub.1-6 alkoxy group);