(20R)-11β,20-dihydroxy-20-phenylpregn-4-en-3-one 在
吡啶 、
亚硝酰氯 作用下,
以97.9%的产率得到(8S,9S,10R,11S,13S,14S,17S)-10,13-Dimethyl-11-nitrosooxy-17-((R)-1-nitrosooxy-1-phenyl-ethyl)-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-3-one