24-iodo-3β-tetrahydropyranyloxychol-5-ene 、
sodium m-(3H-diazirino)phenoxide 以
四氢呋喃 、
六甲基磷酰三胺 为溶剂,
以78%的产率得到3-(3-{(R)-4-[(3S,8S,9S,10R,13R,14S,17R)-10,13-Dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-pentyloxy}-phenyl)-3H-diazirine