(2R,3R,4S,6S)-2,3-Bis-benzyloxy-6-benzyloxymethyl-5-methylene-tetrahydro-pyran-4-ol 、 ((2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-phenylselanyl-tetrahydro-pyran-3-yloxy)-chloro-dimethyl-silane 在
咪唑 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
生成 ((2R,3R,4S,6S)-2,3-Bis-benzyloxy-6-benzyloxymethyl-5-methylene-tetrahydro-pyran-4-yloxy)-((2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenylselanyl-tetrahydro-pyran-3-yloxy)-dimethyl-silane