| abstract |
Benzothiazine derivatives represented by the following general formula: (FORMULA) (wherein R1 represents a hydrogen atom, alkyl group, alkoxycarbonyl group, alkoxaryl group, optionally substituted phenyl group, cycloalkyl group, or aralkyl group, R2 represents a hydrogen atom or an alkyl group, X represents a sulfur or oxygen atom, and Y represents methylene or ethylene) and the acid addition salts thereof. These are useful as medicines such as analgesics, anti-inflammatory agents, antiallergic agents, antirheumatic agents, circulation-improving agents, etc. |