Carbamic acid (1R,5S)-5-(tert-butyl-dimethyl-silanyloxy)-3-[(1R,3aR,7aR)-1-((R)-1,5-dimethyl-5-trimethylsilanyloxy-hexyl)-7a-methyl-2,3,3a,6,7,7a-hexahydro-1H-inden-4-ylethynyl]-4-methyl-cyclohex-3-enyl ester 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 12.0h,
生成
3-O-carbamoyl-6,7-dehydro-1α,25-dihydroxyvitamin D3