(E)-3-[(5R,6R,7R,8S)-8-Hydroxy-5-(4-hydroxy-3,5-dimethoxy-phenyl)-7-hydroxymethyl-5,6,7,8-tetrahydro-naphtho[2,3-d][1,3]dioxol-6-yl]-acrylic acid methyl ester 在
三乙胺 作用下,
以
甲苯 为溶剂,
反应 16.0h,
以70%的产率得到[(5R,5aR,8aR,9S)-9-Hydroxy-5-(4-hydroxy-3,5-dimethoxy-phenyl)-5,5a,6,8,8a,9-hexahydro-furo[3',4':6,7]naphtho[2,3-d][1,3]dioxol-6-yl]-acetic acid methyl ester