Acetic acid (2R,3R,4S,5R,6R)-3-acetoxy-6-acetoxymethyl-2-but-3-enyloxy-5-((2S,3R,4S,5R,6R)-3,4-diacetoxy-5-hydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-4-yl ester 在
咪唑 、 4-(N,N-dimethylaminophenyl)diphenylphosphine 、
碘 作用下,
以
甲苯 为溶剂,
反应 0.75h,
以83%的产率得到Acetic acid (2R,3R,4S,5R,6R)-3-acetoxy-6-acetoxymethyl-2-but-3-enyloxy-5-((2R,3R,4S,5S,6S)-3,4-diacetoxy-5-hydroxy-6-iodomethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-4-yl ester