6(S),19-(4-phenyl-3,5-dioxo-1,2,4-triazolidine-1,2-diyl)-3β-hydroxy-9,10-secoergosta-5(10),7(E),22(E)-triene 在
potassium tert-butylate 作用下,
以
乙醚 、
水 为溶剂,
反应 2.0h,
以85%的产率得到(1S,7S)-7-Hydroxy-1-[(1R,3aS,7aR)-7a-methyl-1-((E)-(1R,4R)-1,4,5-trimethyl-hex-2-enyl)-octahydro-inden-(4E)-ylidenemethyl]-3,4,5,6,7,8-hexahydro-1H-phthalazine-2-carboxylic acid phenylamide