The synthesis of facial amphiphile 3α,7α-diaminocholestane
作者:Sharaf Nawaz Khan、Nam-Ju Cho、Hong-Seok Kim
DOI:10.1016/j.tetlet.2007.05.157
日期:2007.7
The facialamphiphile 3α,7α-diaminocholestane 3 was synthesized from 3β-acetoxy-7-ketocholestane 1 through a stepwise reductive amination. The reductive amination of 1 with NH4OAc in the presence of NaBH3CN, and protection with Boc2O yielded 7α-(tert-butyloxycarbonyl)-aminocholestane 4 in 86% yield. The reductive amination of 6, which was obtained from 4 after hydrolysis and subsequent oxidation, with