Synthesis of (5α)-17-azaandrostan-3-ols and (5α)-17-aza-D-homoandrostan-3-ols and their N-acylated derivatives
作者:Xin Jiang、Jie Wang、Jiaxin Hu、Zongming Ge、Yuefei Hu、Hongwen Hu、Douglas F Covey
DOI:10.1016/s0039-128x(01)00095-2
日期:2001.8
structure-activity relationships for steroid modulation of GABA(A) receptor function. The target compounds were prepared conveniently from (5alpha)-3-hydroxyandrostan-17-ones (6 and 7) via the intermediate (5alpha)-17-aza-D-homoandrostan-3-ols (14 and 15) or (5alpha)-17-azaandrostan-3-ols (18 and 19) precursors in high overall yields. A Beckmannrearrangement and a Hofmann rearrangement were employed as two key
Steroids. III. New Synthesis of Ring-D Seco Steroids
作者:Tomoyoshi Takahashi、Yasuo Satoh
DOI:10.1246/bcsj.56.355
日期:1983.1
16β-Azido-5α-androstan-17-one derivatives were cleaved with bromine in acetic acid at room temperature, to furnish 16-cyano and 16-carbamoyl-16,17-seco-5α-androstan-17-oic acids. 17-Aza-D-homo-5α-androstan-16,17a-dione derivatives were also synthesized.
Synthesis of Several 5α-D-Homosteroid Derivatives Based on Tigogenin
作者:M. I. Merlani、L. Sh. Amiranashvili、E. P. Kemertelidze
DOI:10.1007/s10600-014-0992-y
日期:2014.7
New 5α-D-homosteroids were synthesized from the steroidalsapogenintigogenin using a Beckmann rearrangement. The structures of the synthesized steroids were characterized by spectral methods.