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:
Sep. 12, 1989
Filed:
Oct. 03, 1988
Applicant:
Inventors:
Qi Chang-qing, Beijing, CN;
Tian Jie, Beijing, CN;
Teruyoshi Marunaka, Tokushima, JP;
Yuji Yamada, Tokushima, JP;
Ichiro Yamawaki, Tokushima, JP;
Toshio Ohtani, Tokushima, JP;
Yoshinori Minami, Naruto, JP;
Hitoshi Saito, Tokushima, JP;
Assignee:
Taiho Pharmaceutical Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
514279 ; 514908 ; 546 36 ;
Abstract
Disclosed are a compound of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a hydrogen atom, an alkyl group or an acyl group, process for the production thereof and use thereof. The compounds have an antitumor activity, and those wherein both of R.sub.1 and R.sub.2 represent a hydrogen atom or an acyl group are novel compounds.