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:
Jan. 26, 1988
Filed:
Jul. 08, 1986
Applicant:
Inventors:
Hiroshi Yamauchi, Ibaraki, JP;
Seiichiro Nomoto, Ibaraki, JP;
Isao Sugiyama, Ibaraki, JP;
Yuuki Komatu, Ibaraki, JP;
Takeo Kanai, Chiba, JP;
Keizo Takayanagi, Gumma, JP;
Yasuhide Tanaka, Saitama, JP;
Atsushi Koiwa, Chiba, JP;
Shinichi Endoh, Ibaraki, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546246 ;
Abstract
A novel 4-cyanopiperidine derivative, which is represented by the following general formula (I): ##STR1## wherein X means a halogen atom, or an acid addition salt thereof, is prepared by reacting N-(2-hydroxyethyl)-4-carbamoylpiperidine or an acid addition salt thereof with a dehydrating and halogenating agent; or by reacting 4-cyanopiperidine or a salt thereof with a compound represented by the following general formula (IV):