Synthesis of 2<i>H</i>-1,4-thiazin-3(4<i>H</i>)-one 1-oxide and 2<i>H</i>-1,4-thiazin-3-(4<i>H</i>)-one 1,1-dioxide, structural analogs of uracil
作者:M. Bobek
DOI:10.1002/jhet.5570190125
日期:1982.1
The synthesis of 1,4-thiazine 1-oxide and 1,1-dioxide analogs of the antibiotic emimycin is described. Reaction of methylthioglycolate with 1-bromo-2,2-diethoxyethane gave methyl (2,2-diethoxyethylthio)acetate (2). Treatment of 2 with methanolic ammonia followed by cyclization furnished 2H-1,4-thiazin-3(4H)-one (5). Oxidation of 5 with m-chloroperoxybenzoic acid converted it to 2H-1,4-thiazin-3(4H)-one
描述了抗生素阿米霉素的1,4-噻嗪1-氧化物和1,1-二氧化物类似物的合成。甲基硫代乙醇酸酯与1-溴-2,2-二乙氧基乙烷的反应,得到(2,2-二乙氧基乙基硫基)乙酸甲酯(2)。用甲醇氨处理2,然后环化,得到2 H -1,4-噻嗪-3(4 H)-一(5)。氧化5与米氯过氧酸转换它为2 ħ -1,4-噻嗪-3(4 H ^) -酮1-氧化物(6)。用高锰酸钾氧化2,然后用甲醇氨处理,环化得到2 H-1,4-噻嗪-3(4 H)-1,1-二氧化物。