三缩四乙二醇 、
imidazolide of 3α,7β-dihydroxy-5β-cholan-24-oic acid 以
氯仿 为溶剂,
反应 24.0h,
以85%的产率得到(R)-4-((3R,5S,7S,8R,9S,10S,13R,14S,17R)-3,7-Dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid 2-{2-[2-(2-hydroxy-ethoxy)-ethoxy]-ethoxy}-ethyl ester