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. 15, 2011
Filed:
Jul. 23, 2007
Motoaki Tanaka, Chiyoda-ku, JP;
Masakazu Fukushima, Tokushima, JP;
Motoaki Tanaka, Chiyoda-ku, JP;
Masakazu Fukushima, Tokushima, JP;
Taiho Pharmaceutical Co., Ltd., Tokyo, JP;
Other;
Abstract
To provide a compound which exhibits excellent anti-tumor activity and excellent oral absorption and which is a useful anti-tumor drug. The invention provides a 3'-ethynylcytidine derivative represented by formula (1): (wherein X represents a (substituted) alkylcarbonyl group, a (substituted) alkoxycarbonyl group, or a hydrogen atom; one of Y and Z represents a hydrogen atom or a group represented by (R)(R)(R)Si— and the other represents a group represented by (R)(R)(R)Si—; and R, R, R, R, R, and Reach represent a (substituted) alkyl group, a (substituted) cyclic alkyl group, or a (substituted) aryl group) or a salt thereof.