2-{[(2S,3R,4R,5S,6R)-4,5-Dihydroxy-2-methoxy-6-(toluene-4-sulfonyloxymethyl)-tetrahydro-pyran-3-ylamino]-methylene}-malonic acid dimethyl ester 在
吡啶 作用下,
以
丁酮 为溶剂,
反应 16.0h,
生成
methyl 3,4-di-O-acetyl-6-S-acetyl-2-deoxy-2-<(2,2-dimethoxycarbonylvinyl)amino>-6-thio-α-D-glycopyranoside