2-Methyl-3-oxo-butyric acid (2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester 、
碘甲烷 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
生成 2,2-Dimethyl-3-oxo-butyric acid (2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester