(+/-)-2,2-ethanediyldioxy-7-methoxy-4a-methyl-(4a
r,4b
t,10b
c)-1,2,3,4,4a,4b,5,6,10b,11-decahydro-chrysene 在
1,4-二氧六环 、
乙醇 、
氨 作用下,
生成
rac-3,3-ethanediyldioxy-
D-homo-18-nor-androsta-5,16-dien-17a-one 、
rac-3,3-ethanediyldioxy-D-homo-18-nor-androsta-5,13-dien-17a-one