## Abstract (25S)–5α‐cholestane‐3β, 26‐diol [2,4,2′,4′–^3^H~4~] was synthesized by hydrogenation of neotigogenin acetate 2, followed by acetylation to (25S)‐5α‐furostane‐3β, 26‐diol diacetate 5; this was oxidized to (25S)–16–22‐dioxo‐5α‐cholestane‐3β, 26‐diol diacetate 6. Clemmensen reduction of th
Regio-controlled synthesis of 4α-(3H3}methyl-5α-cholestan-3β-ol
✍ Scribed by I. Victor Ekhato; Cecil H. Robinson
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- French
- Weight
- 243 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
4a-(3H )Methy1-5a-cholestan-38-01 was r e g i o s e l e c t i v e l y prepared from 5a-cho?est-I-en-3-one v i a a l k y l a t i o n with methyl i o d i d e , hydrogenation, and LAH reduction. The f i n a l and intermediate products were c h a r a c t e r i s e d by spectroscopic methods. Regio-control l e d synthesis, 4a-(3H3)Methy1-5a-cholestan-38-01, 5a-Cholest-1,3-dien-3-01 t r i m e t h y l s i l y l ether. D e m s o f t h i s synthesis a r e given.
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