5-氨基-3,4-二甲基异唑 、
2-甲基-4-羟基-2H-噻吩并[2,3-e]-1,2-噻嗪-3-甲酸甲酯-1,1-二氧化物 反应 14.0h,
以there is obtained N-(3,4-dimethyl-5-isoxazolyl)-4-hydroxy-2-methyl-2H-thieno[2,3-e]-1,2-thiazine-3-carboxamide 1,1-dioxide of decomposition point 206°-208° C. (的产率得到4-hydroxy-2-methyl-1,1-dioxo-1,2-dihydro-1λ
6-thieno[2,3-
e][1,2]thiazine-3-carboxylic acid 3,4-dimethyl-isoxazol-5-ylamide