(3R,3aR,6R,8aR,4'S)-3-(2',2'-dimethyl-1',3'-dioxan-4'-yl)-8-methoxy-8a-trifluoroacetoxymethyl-7-phenylthio-1,2,3,6-tetrahydro03a,6-epoxyazulene 在
silica gel 作用下,
以95%的产率得到(3R,3aR,6R,8aR,4'S)-3-(2',2'-dimethyl-1',3'-dioxan-4'-yl)-8-methoxy-8a-hydroxymethyl-7-phenylthio-1,2,3,6-tetrahydro-3a,6-epoxyazulene