(3aR)-3t,-5-dimethoxy-(3ar,9ac)-1,2,3,8,9,9a-hexahydro-3aH-phenanthro[4,5-bcd]furan-9bc-carbaldehyde-oxime 在
氢氧化钾 、
乙酸酐 、
乙二醇 作用下,
生成 (3a
R)-3
t,5-dimethoxy-(3a
r,9a
c)-1,2,3,8,9,9a-hexahydro-3a
H-phenanthro[4,5-
bcd]furan-9b
c-carboxylic acid