Synthesis and absolute configuration at C-23 of [23R and 23S]-3α, 7α, 23-trihydroxy-5β-cholan-24-oic and [23R and 23S]-3α, 7α, 12α, 23-tetrahydroxy-5β-cholan-24-oic acids
作者:Andrzej Kutner、Romana Jaworska
DOI:10.1016/0039-128x(82)90109-x
日期:1982.7
A synthesis of /23R and 23S/-3 alpha, 7 alpha, 23-trihydroxy-5 beta-cholan-24-oic acids is described. Lithium enolate of completely protected starting chenodeoxycholic acid was directly hydroxylated at C-23 by the oxidoperoxymolybdenum /hexamethylphosphoric triamide/ /pyridine/ complex. The resulting derivatives containing hydroxyl group at C-23 were separated by liquid column chromatography and their