Bile acids. LXXIX. synthesis and reduction of 1,4-dien-3-ones of various bile acids
作者:Mohammed N. Iqbal、William H. Elliott
DOI:10.1016/0039-128x(89)90022-6
日期:1989.3
bile acids (IIa-d), their methyl esters (IIe-h), and their formylated derivatives (IIi-k) were synthesized and their reduction investigated by both catalytic and chemical methods as an alternative route to the synthesis of allo bile acids. Lithium-ammonia reduction proved to be the better method for the reduction of these 1,4-dien-3-ones producing the 3-keto- and 3 beta-hydroxy-allo bile acids (Vb-d)