(5R,5aR,8aR,9R)-9-(tert-Butyl-dimethyl-silanyloxy)-5a-((E)-3-phenyl-allyl)-5-(3,4,5-trimethoxy-phenyl)-5,8,8a,9-tetrahydro-5aH-furo[3',4':6,7]naphtho[2,3-d][1,3]dioxol-6-one 在
molecular sieve 、
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以91%的产率得到(5R,5aR,8aR,9R)-9-hydroxy-5a-[(E)-3-phenylprop-2-enyl]-5-(3,4,5-trimethoxyphenyl)-5,8,8a,9-tetrahydro-[2]benzofuro[5,6-f][1,3]benzodioxol-6-one