4-Hydroxy-pentanoic acid (2S,4aR,6R,7R,8S,8aS)-6-methoxy-2-phenyl-8-((3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yloxy)-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester 在
4 A molecular sieve 、 polystyrene-bound [1,3,2]diazaphosphinane 作用下,
以
二氯甲烷 为溶剂,
反应 3.19h,
生成 (2S,4aR,6R,7R,8R,8aS)-6-methoxy-2-phenyl-8-[(2S,3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-ol