3α,4α-epoxy-6-nitro-cholest-5(6)-ene 在
三氟化硼乙醚 、
乙腈 作用下,
反应 0.33h,
以53.3%的产率得到N-[(3R,4R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-3-hydroxy-10,13-dimethyl-6-nitro-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-4-yl]-acetamide