Acetic acid (2R,3S,4R,5R,6R)-3-acetoxy-2-acetoxymethyl-5-acetylamino-6-(2-mercapto-ethoxy)-tetrahydro-pyran-4-yl ester 、 alkaline earth salt of/the/ methylsulfuric acid 在
sodium methylate 、
caesium carbonate 作用下,
生成 N-{(2R,3R,4R,5S,6R)-2-[2-(Benzotriazol-1-ylmethylsulfanyl)-ethoxy]-4,5-dihydroxy-6-hydroxymethyl-tetrahydro-pyran-3-yl}-acetamide