Acrylamidobenzoic acid derivatives and their use.

摘要

Compounds of the general formula:
wherein R¹ is heterocyclic group other than pryridyl and which is unsubstituted or substituted with lower alkyl or lower alkoxycarbonyl, R² is hydrogen, halogen, or nitro, and R³ is carboxy group or its functional derivative, with the proviso that when R' is an unsubstituted furyl, or furyl mono-or polysubstituted with alkyl and R² is hydrogen, then R³ is functional derivative of carboxy and, where applicable, pharmaceutically acceptable salts thereof are hyaluronidase inhibitors and useful as anti-allergic agent.