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. 29, 2009
Filed:
Feb. 20, 2004
Applicants:
Hiroshi Fukuda, Kanagawa, JP;
Takeshi Murata, Kanagawa, JP;
Satoshi Niizuma, Kanagawa, JP;
Hitomi Suda, Kanagawa, JP;
Masao Tsukazaki, Kanagawa, JP;
Inventors:
Hiroshi Fukuda, Kanagawa, JP;
Takeshi Murata, Kanagawa, JP;
Satoshi Niizuma, Kanagawa, JP;
Hitomi Suda, Kanagawa, JP;
Masao Tsukazaki, Kanagawa, JP;
Assignee:
Chugai Seiyaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 239/00 (2006.01); C07D 239/70 (2006.01); C07D 239/72 (2006.01); C07D 471/00 (2006.01); C07D 487/00 (2006.01); C07D 491/00 (2006.01); C07D 498/00 (2006.01); C07D 515/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention relates to novel processes for the preparation of compounds of the formula [1], wherein R1, R2, R3 and R4 are as defined in the claims and description as well as pharmaceutically acceptable salts thereof. The compounds of the formula [1] are hexacyclic compounds having potent anti-tumor activity.