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:
Feb. 12, 1991
Filed:
Nov. 13, 1989
Applicant:
Inventors:
Hiromitsu Saito, Sagamihara, JP;
Akira Sato, Machida, JP;
Masaji Kasai, Fujisawa, JP;
Makoto Morimoto, Shizuoka, JP;
Tadashi Ashizawa, Numazu, JP;
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ; C07B / ;
U.S. Cl.
CPC ...
544342 ; 544338 ;
Abstract
Disclosed are DC-52 derivatives represented by the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 independently represents hydrogen or hydroxyl, X represents hydroxyl and Y represents cyano and Z represents carboxyl or hydroxymethyl, or pharmacologically acceptable salts thereof. The DC-52 derivatives are useful as antitumor agents.