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. 17, 1995
Filed:
Jul. 21, 1993
Akihiro Ishii, Urawa, JP;
Yasunobu Nishimura, Kawagoe, JP;
Hirotsune Kondoh, Kamifukuoka, JP;
Yoshiyuki Kikuchi, Houya, JP;
Central Glass Company, Limited, Ube, JP;
Abstract
The present invention relates to phthalimide compounds represented by the following general formula (I) and their acid-added salts and to methods of producing the same: ##STR1## wherein Y represents --CH.sub.2 --CH.sub.2 -- or --CH.dbd.CH--. The present invention provides phthalimide compounds represented by the above general formula (I) and their acid-added salts, which are useful compounds as intermediates of medicines such as anti-ulcers based on histamine H.sub.2 receptor antagonism. In particular, acid-added salts of the phthalimide compounds can be easily refined by the recrystallization method. Therefore, there is provided an advantage that purity of the anti-ulcers which are derived from phthalimide compounds and their acid-added salts according to the present invention can be improved.