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:
Jun. 02, 2015
Filed:
Jan. 27, 2014
Eisai R&d Management Co., Ltd., Tokyo, JP;
Itaru Arimoto, Tokyo, JP;
Satoshi Nagato, Tokyo, JP;
Yukiko Sugaya, Tsukuba, JP;
Yoshio Urawa, Kamisu, JP;
Koichi Ito, Tsukuba, JP;
Hiroyuki Naka, Kamisu, JP;
Takao Omae, Tsukuba, JP;
Akio Kayano, Kamisu, JP;
Katsutoshi Nishiura, Kamisu, JP;
EISAI R&D MANAGEMENT CO., LTD., Tokyo, JP;
Abstract
The present inventions provide a method for commercially producing a 1,2 -dihydropyridine-2-one compound represented by the following formula (III-a) wherein the ring A represents an optionally substituted 2-pyridyl group, the ring B represents an optionally substituted phenyl group, and the ring C represents an optionally substituted phenyl group. Further, the invention provides crystals of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2 -dihydropyridin-2-one and production processes therefore.