申请人:YuHan Corporation Co., Ltd.
公开号:US04683306A1
公开(公告)日:1987-07-28
Process for the preparation of 3,4-dihydro-2-substituted-4(or 3)-oxo-2H-1,2-thiazine-3(or 4)-carboxylic acid 1,1,-dioxide magnesium chelate derivatives and its acids by reacting appropriately 3,4-dihydro-2-substituted-4(or 3)-oxo-2H-1,2-thiazine 1,1-dixoides with alkylmagnesiumcarbonate and then hydrolyzing and its use as intermediates for the preparation of N-substituted-2-substituted-2H-1,2-thiazine-3(or 4)-carboxamide-1,1-dioxide derivatives, effective antiinflammatory agents.
制备3,4-二氢-2-取代-4(或3)-氧代-2H-1,2-噻嗪-3(或4)-羧酸1,1-二氧化镁螯合物及其酸的过程,通过将3,4-二氢-2-取代-4(或3)-氧代-2H-1,2-噻嗪-1,1-二氧化物与烷基镁碳酸盐适当反应,然后水解,并将其用作制备N-取代-2-取代-2H-1,2-噻嗪-3(或4)-羧酰胺-1,1-二氧化物衍生物的中间体,这些衍生物是有效的抗炎药物。