N-((4aR,6R,7R,8R,8aS)-6-Allyloxy-8-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl)-N-benzyl-acetamide 在
potassium tert-butylate 作用下,
以
二甲基亚砜 为溶剂,
生成
N-{(4aR,6R,7R,8R,8aS)-8-Benzyloxy-2-phenyl-6-[((E)-propenyl)oxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl}-acetamide