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:
Nov. 23, 1982
Filed:
Dec. 02, 1980
Kiro Asano, Kukizaki, JP;
Humio Tamura, Kukizaki, JP;
Hiromitsu Tanaka, Tokyo, JP;
Satoru Enomoto, Fujisawa, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A process for producing a steroid hormone-antitumor derivative which selectively affects to tumor or cancer cells comprises reacting X group of a steroid hormone derivative having the formula ##STR1## wherein ST represents a steroid moiety having a cyclophenanthrene hydrocarbon skeleton of gonane, estrane or androstane which is bound to carboxyl group by esterifying OH group on D ring with carboxyl group; and R' represents a C.sub.1 -C.sub.4 alkylene group and X represents a halogen atom, amino group, hydroxyl group, carboxyl group or a salt thereof, with a modified or non-modified reactive group of an antitumor drug to form a binded group of ##STR2##