乙酸酐 、 Phosphoric acid (E)-1-[(3S,5R)-3,5-bis-(tert-butyl-dimethyl-silanyloxy)-2-methyl-cyclohex-1-enyl]-2-[(1R,3aR,7aR)-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-2,3,3a,6,7,7a-hexahydro-1H-inden-4-yl]-2-(toluene-4-sulfonyl)-vinyl ester diethyl ester 在
吡啶 、 sodium amalgam 、
四丁基氟化铵 作用下,
生成
1α,3β-diacetoxy-9,10-seco-cholesta-5(10),8-diene-6-yne