6α-hydroxy-3.4-seco-5β-cholanetrioic acid-(3.4.24) 在
sodium ethanolate 作用下,
生成 (3a
R)-3a
r.6
c-dimethyl-6
t-(2-carboxy-ethyl)-3
c-((
R)-1-methyl-3-carboxy-propyl)-(5a
tH.9a
cH.9b
tH)-2.3.3a.4.5.5a.6.9.9a.9b-decahydro-1
H-cyclopenta[
a]naphthalene-carboxylic acid-(7)