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. 09, 1999
Filed:
Mar. 26, 1996
Applicant:
Inventors:
Kazumi Ogata, Toyonaka, JP;
Takahiro Sakaue, Itami, JP;
Kazuhiko Ito, Amagasaki, JP;
Hidetoshi Nakao, Amagasaki, JP;
Assignee:
Senju Pharmaceutical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514255 ; 544360 ; 544398 ;
Abstract
The present invention provides a piperazine derivative of the following formula or a pharmacologically acceptable salt thereof ##STR1## wherein R.sub.1 represents a benzene ring, naphthalene ring, quinoline ring, indole ring or chroman ring that may be substituted by lower alkyl, lower alkoxy and/or hydroxy; R.sub.2 and R.sub.3 independently represent hydrogen or lower alkyl. The compound of the present invention has potent antiallergic activity and can therefore be used with advantage in the treatment of various allergic diseases.