N,N-bis(methoxymethyl)-N-(p-bromophenyl)amine 、
3,3-dihydroperoxy-pregn-4-en-20-one 在
EuCl
3/γ-Al
2O
3 作用下,
以
四氢呋喃 为溶剂,
反应 6.5h,
以70%的产率得到1-[(8S,9S,10R,13S,14S,17S)-7'-(4-bromophenyl)-10,13-dimethyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrospiro[cyclopenta[a]phenanthrene-3,3'-[1,2,4,5,7]tetraoxazocane]-17-yl]ethan-1-one