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. 25, 1990
Filed:
Aug. 29, 1989
Shohachi Nakajima, Maebashi, JP;
Nobuyasu Komeshima, Maebashi, JP;
Kirin Beer Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is an anthracycline compound of the formula (I): ##STR1## wherein Ra is -R.sup.1, ##STR2## or --OR.sup.3, R.sup.1 being (1) alkyl, alkenyl, alkynyl, fluoroalkyl, aryl or aralkyl, or (2) alkyl, alkenyl, alkynyl. fluoroalkyl, aryl or aralkyl having carboxyl, azido, amino, hydroxy, alkoxy or a halogen atom; R.sup.2 being R.sup.1, a hydrogen atom or hydroxy; and R.sup.3, which may be the same or different when one substituent has two R.sup.3 's, being R.sup.1 or a hydrogen atom; or the formula (II): ##STR3## wherein Rb is -R.sup.1, ##STR4## or --OR.sup.3, R.sup.1, R.sup.2 and R.sup.3 being as defined above; and R.sup.4 being the same as R.sup.3 except that methyl is not included; or an acid addition salt thereof. This compound can be contained as an active ingredient in an antitumor agent, whereby good results are attainable.