Potential bile acid metabolites. XV. Synthesis of 4.BETA.-hydroxylated bile acids; unique bile acids in human fetal bile.
作者:Takashi IIDA、Toshiaki MOMOSE、Frederic C. CHANG、Junichi GOTO、Tosio NAMBARA
DOI:10.1248/cpb.37.3323
日期:——
The 4 beta-hydroxylated derivatives of lithocholic, deoxycholic, chenodeoxycholic, and cholic acids were synthesized from their respective parent compounds. The principal reactions employed were 1) beta-face cis-dihydroxylation of delta 3 intermediates with osmium tetroxide-N-methylmorpholine N-oxide, 2) selective cathylation of vicinal 3 beta,4 beta-diols followed by oxidation of the resulting 4 beta-monocathylates