2-[1-(3-{(3R,3aS,7aS)-7-[2-[(3S,5R)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-2-methylene-cyclohex-(Z)-ylidene]-eth-(E)-ylidene]-3-isopropyl-octahydro-inden-3a-ylmethoxymethyl}-phenyl)-1-methyl-ethoxy]-tetrahydro-pyran 在
氢氟酸 作用下,
以
水 、
乙酸乙酯 、
乙腈 为溶剂,
反应 0.67h,
以54%的产率得到1alpha-hydroxy-18-[m-(1-hydroxy-1-methylethyl)-benzyloxy]-23,24,25,26,27-pentanorvitamin D3/1alpha-hydroxy-18-[m-(1-hydroxy-1-methylethyl)-benzyloxy]-23,24,25,26,27-pentanorcholecalciferol