(E)-(R)-6-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2-iodo-hept-2-en-4-one 、
(S)-2-Benzyloxy-3-((2R,3S,4R,5R,6R)-3,4,5-tris-benzyloxy-6-methoxymethyl-tetrahydro-pyran-2-yl)-propionaldehyde 在
chromium dichloride 、 nickel dichloride 作用下,
以
二甲基亚砜 为溶剂,
反应 20.0h,
生成 (E)-(2R,7S,8S)-8-Benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-7-hydroxy-6-methyl-9-((2R,3S,4R,5R,6R)-3,4,5-tris-benzyloxy-6-methoxymethyl-tetrahydro-pyran-2-yl)-non-5-en-4-one 、 (E)-(2R,7R,8S)-8-Benzyloxy-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-7-hydroxy-6-methyl-9-((2R,3S,4R,5R,6R)-3,4,5-tris-benzyloxy-6-methoxymethyl-tetrahydro-pyran-2-yl)-non-5-en-4-one