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:
Aug. 07, 1984
Filed:
Apr. 07, 1982
Toshio Atsumi, Kawanishi, JP;
Yuzo Tarumi, Nishinomiya, JP;
Tetsutaro Sanjiki, Ibaraki, JP;
Yoshiaki Takebayashi, Toyonaka, JP;
Noboru Yoshida, Osaka, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
There are provided compounds of the formula: ##STR1## wherein either R.sub.1 or R.sub.2 is a hydrogen atom, a hydroxy group, an acyloxy group, a phthalimido group or an acetamido group and the other is a hydrogen atom; either R.sub.3 or R.sub.4 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.5 or R.sub.6 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.7 or R.sub.8 is a hydrogen atom, a methyl group, a hydroxymethyl group, an acyloxymethyl group, an alkoxycarbonyl group, a group of the formula: ##STR2## (wherein X.sub.1 and X.sub.2 are a hydrogen atom or a lower alkyl group), or a carboxyl group and the other is a hydrogen atom; either R.sub.11 or R.sub.12 is a hydrogen atom, a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.13 or R.sub.14 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.15 or R.sub.16 is a methyl group, a hydroxymethyl group or an acyloxymethyl group and the other is a hydrogen atom; and a process for producing them. These compounds are useful as antitumor agents.