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:
Jul. 02, 2013
Filed:
Apr. 27, 2007
Applicants:
Seigo Sawada, Tokyo, JP;
Takashi Yaegashi, Tokyo, JP;
Inventors:
Seigo Sawada, Tokyo, JP;
Takashi Yaegashi, Tokyo, JP;
Assignee:
Kabushiki Kaisha Yakult Honsha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a process for production of 7-ethyl-10-[4-(1-piperidino)-1-piperidino]-carbonyloxycamptothecin from a camptothecin composition containing 18,19-dehydrocamptothecin without producing any vinyl form of the compound. The process is characterized by catalytically reducing at least one compound selected from a compound (1) and others in the process of producing a compound (5) from a composition containing the compound (1).