13400-67-4Relevant articles and documents
The synthesis of facial amphiphile 3α,7α-diaminocholestane
Khan, Sharaf Nawaz,Cho, Nam-Ju,Kim, Hong-Seok
, p. 5189 - 5192 (2008/02/08)
The facial amphiphile 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 NH4OTf in the presence of NaBH(OEh)3 provided 3 in 75% yield after protection with Boc2O.
Photoinduced Molecular Transformations. Part 136. Reactions of Alkoxyl Radicals generated from Hypoiodites of 3β-Hydroxy-7-oxo-Δ5-Steroids. Synthesis of Some Functionalized Oxasteroids
Suginome, Hiroshi,Kondoh, Takahiko
, p. 3119 - 3124 (2007/10/02)
The synthesis of several unsaturated 3-oxasteroids and 4a-homo-4-oxasteroids of cholestane series functionalized at their B-ring is described; 3β-hydroxycholest-5-en-7-one and its 4,4-dimethyl derivative were transformed into 3-oxacholest-5-en-7-one and i