alkaline earth salt of/the/ methylsulfuric acid 在
乙醚 、
氨 、
lithium 作用下,
生成
(+/-)-2,2-ethanediyldioxy-7-methoxy-4a-methyl-(4ar,4bt,10bt)-1,2,3,4,4a,4b,5,6,10b,11-decahydro-chrysene 、 (+/-)-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