溴甲苯 、
(S)-1-[(3R,3aR,5aS,6R,7R,9aS,9bS)-7-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-allyl]-3-((R)-1,5-dimethyl-hexyl)-3a,6-dimethyl-dodecahydro-cyclopenta[a]naphthalen-6-yl]-3-isopropenyl-4-methyl-pent-3-en-2-ol 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
以70%的产率得到{(R)-1-[(3R,3aR,5aS,6R,7R,9aS,9bS)-6-((S)-2-Benzyloxy-3-isopropenyl-4-methyl-pent-3-enyl)-3-((R)-1,5-dimethyl-hexyl)-3a,6-dimethyl-dodecahydro-cyclopenta[a]naphthalen-7-yl]-allyloxy}-tert-butyl-dimethyl-silane