(4aR,6S,7R,8R,8aS)-6-methoxy-2-phenyl-8-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine-7-carbaldehyde 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 168.0h,
以94%的产率得到(4aR,6S,7S,8R,8aS)-6-methoxy-2-phenyl-8-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine-7-carbaldehyde