(3Z,9E)-(1R,7S,11S,17R)-11-(tert-Butyl-dimethyl-silanyloxy)-7-((E)-(S)-3-cyclohexyl-1-hydroxy-allyl)-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-3,9,19-trien-5-one 在
吡啶 、
氢氟酸 作用下,
以
四氢呋喃 为溶剂,
以91%的产率得到(3Z,9E)-(1R,7S,11S,17R)-7-((E)-(S)-3-Cyclohexyl-1-hydroxy-allyl)-11-hydroxy-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-3,9,19-trien-5-one