反应详情

N-(4-Ethyl-5-methyl-2-thiazolyl)-4-hydroxy-2H-naphtho[2,1-e]-1,2thiazine-3-carboxamide-1,1-dioxide was prepared analogous to Example 37 from 4-hydroxy-2H-naphtho[2,1-e]-1,2-thiazine-3-carboxylic acid methyl ester-1,1-dioxide and 2-amino-4-ethyl-5-methyl-thiazole. Yield: 55% of theory; m.p. 268°-270° C (decomp.; from xylene).