93001-12-8Relevant articles and documents
Bile Acids with Cyclopropane-Containing Side Chain. 2. Synthesis and Properties of 3α,7β-Dihydroxy-22,23-methylene-5β-cholan-24-oic Acid (2-Sulfoethyl)amide
Pellicciari, Roberto,Cecchetti, Sergio,Natalini, Benedetto,Roda, Aldo,Grigolo, Brunella,Fini, Adamo
, p. 239 - 242 (1985)
The preparation of 3α,7β-dihydroxy-22,23-methylene-5β-cholan-24-oic acid (2-sulfoethyl)amide (5) by the one-step EEDQ-induced conjugation between ursodeoxycholic acid "cyclopropylog" (4) and taurine is described.The presence of a cyclopropyl ring adjacent to the amide bond is shown to make it resistant to degradation by intestinal bacteria.This new cyclopropylog is neither deconjugated at the C-24 amide bond nor 7-dehydroxylated when incubated with human stools in anaerobic conditions.