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:
Dec. 27, 1988
Filed:
Jan. 28, 1987
Applicant:
Inventors:
Assignee:
Wakunaga Seiyaku Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2603971 ;
Abstract
A bile acid derivative having carcinostatic activity represented by the following formula (1): ##STR1## wherein each of R.sub.1 and R.sub.2 is a hydrogen atom or a hydroxyl group, R.sub.3 is a hydroxyl group, benzyloxyl group or --NH--CH.sub.2n R.sub.5 (wherein R.sub.5 is a carboxyl group or sulfonyl group, and n represents the integer of 1 or 2), X is a halogen atom, R.sub.4 is a hydrogen atom or XCH.sub.2 CH.sub.2 --,.chi. is an .alpha.-bond, and .chi. is an .alpha.- or .beta.-bond is produced by the steps (a) and (b), the steps (a), (b) and (c), or the steps (a), (b), (c) and (d) described below: