bromomethyl-[[(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-4-(trideuteriomethyl)-2,3,6,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-dimethylsilane 在
偶氮二异丁腈 、
三丁基氯化锡 、 sodium cyanoborohydride 作用下,
以
叔丁醇 为溶剂,
反应 6.0h,
以60%的产率得到(1S,2R,5S,9R,10R,13S,14S,17R,18R)-2,7,7,18-tetramethyl-17-[(2R)-6-methylheptan-2-yl]-9-(trideuteriomethyl)-6-oxa-7-silapentacyclo[11.7.0.02,10.05,9.014,18]icosane