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. 22, 1986
Filed:
Aug. 09, 1984
Applicant:
Inventors:
Koichi Yokoi, Kashiwa, JP;
Hiroshi Hasegawa, Yachiyo, JP;
Tadashi Narita, Chiba, JP;
Takemitsu Asaoka, Narita, JP;
Kenichi Kukita, Kashiwa, JP;
Seiji Ishizeki, Yachiyo, JP;
Toshiaki Nakashima, Shisuimachi, JP;
Assignee:
SS Pharmaceutical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 15 ;
Abstract
Disclosed herein are Fredericamycin A derivatives, each, represented by the following general formula (I): ##STR1## wherein R means a hydrogen atom or acyl group, A denotes ##STR2## and dotted bonds are optional, with a proviso that when A is ##STR3## or the dotted bonds are contained, R is other than hydrogen atom. They have excellent antibacterial and antitumor activities and at the same time, are extremely stable compared with Fredericamycin A.