9-deoxyforskolin 、
叔丁基二甲基氯硅烷 在
potassium hydride 作用下,
以
四氢呋喃 为溶剂,
以45%的产率得到Acetic acid (3R,4aS,5S,6S,10S,10aS)-1,5-bis-(tert-butyl-dimethyl-silanyloxy)-10-hydroxy-3,4a,7,7,10a-pentamethyl-3-vinyl-2,4a,5,6,6a,7,8,9,10,10a-decahydro-3H-benzo[f]chromen-6-yl ester