Short synthesis of 16β-hydroxy-5α-cholestane-3,6-dione a novel cytotoxic marine oxysterol
作者:Mickaël Denancé、Michèle Guyot、Mohammad Samadi
DOI:10.1016/j.steroids.2006.03.002
日期:2006.7
The first and short synthesis of 16beta-hydroxy-5alpha-cholestane-3,6-dione 1 a metabolite from marine algae, has been achieved in six steps from readily available diosgenin 5. Selective deoxygenation of primary alcohol of triol 6 has been accomplished in one step using Et(3)SiH and catalytic amount of B(C(6)F(5))(3) to produce compound 9 in high yield. Oxidation of 11 with PCC, allowed the introduction