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:
Oct. 03, 1989
Filed:
Dec. 24, 1987
Takao Yoshioka, Hiromachi, JP;
Eiichi Kitazawa, Hiromachi, JP;
Mitsuo Yamazaki, Hiromachi, JP;
Yoshio Iizuka, Hiromachi, JP;
Sankyo Company, Limited, Tokyo, JP;
Abstract
Compounds formula (I): ##STR1## in which: R.sup.1 represents a hydrogen atom, an alkyl group, a substituted alkyl group, a C.sub.2 -C.sub.6 alkenyl group, an aryl group, a substituted aryl group or an alkoxycarbonyl group wherein the alkoxy part has from 1 to 6 carbon atoms; R.sup.2 represenets a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a C.sub.3 or C.sub.4 alkenyl group; R.sup.3 represents a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group; R.sup.4 represents a hydroxy group, a C.sub.1 -C.sub.21 aliphatic acyloxy group or a carbocyclic aryl carboxylic aryloxy group; R.sup.5 represents a C.sub.1 -C.sub.12 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a hydroxy group, a C.sub.1 -C.sub.7 aliphatic acyloxy group or a carbocyclic aryl carboxylic acyloxy group; R.sup.6 represents a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a C.sub.1 -C.sub.6 alkoxy group; and n is 0, 1, or 2;