89238-74-4Relevant articles and documents
1β-hydroxylation in 5β-steroids: An efficient synthesis of 1β,3α-dihydroxy-5β-cholan-24-oic acid
Yamaguchi,Nakamori,Iida,Nambara
, p. 1213 - 1219 (2001)
An efficient method for the oxyfunctionalization at C-1 in 5β-steroid (A/B-cis) is described as exemplified by conversion of lithocholic acid (3α-hydroxy-5β-cholan-24-oic acid) to 1β,3α-dihydroxy-5β-cholan-24-oic acid. The key reactions used are regioselective functionalization at C-2 in the 5β-steroid nucleus, stereoselective epoxidation of intermediary α,β-conjugated ketone with dimethyldioxirane, and subsequent reductive cleavage of the resulting β-epoxy-ketone with PhSeNa.
Synthesis of the 1 beta-hydroxylated bile acids, unusual bile acids in human biological fluids.
Tohma,Mahara,Takeshita,Kurosawa,Ikegawa
, p. 2890 - 2899 (2007/10/02)
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