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:
Apr. 09, 1991
Filed:
Aug. 07, 1989
Toshio Satoh, Tokushima, JP;
Hitoshi Matsumoto, Tokushima, JP;
Hisao Kakegawa, Tokushima, JP;
Yoshiko Kato, Kobe, JP;
Juichi Riku, Uji, JP;
Junji Yoshinaga, Neyagawa, JP;
Yoshifumi Kanamoto, Kashihara, JP;
Sawai Pharmaceutical Co., Ltd., Osaka, JP;
Abstract
Compounds of the general formula: ##STR1## wherein R.sup.1 is heterocyclic group other than pyridyl and which is unsubstituted or substituted with lower alkyl or lower alkoxycarbonyl, R.sup.2 is hydrogen, halogen, or nitro, and R.sup.3 is carboxy group or its functional derivative, with the proviso that when R.sup.1 is an unsubstituted furyl, or furyl mono- or polysubstituted with alkyl and R.sup.2 is hydrogen, then R.sup.3 is functional derivative of carboxy and, where applicable, pharmaceutically acceptable salts thereof are hyaluronidase inhibitors and useful as anti-allergic agent.