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The crystal and molecular structures of two cyclobuta-steroids: 4',4'-dichloro-2β,3β-dihydrocyclobuta[2,3]-5α-cholestan-3'(4'H)-one (I) and 3',3'-dichloro-2β,3β-dihydrocyclobuta[2,3]-5α-cholestan-4'(3'H)-one (II)

✍ Scribed by Nassimbeni, L. R. ;Orpen, A. G. ;Sheldrick, G. M. ;van Niekerk, J. C. ;Cragg, G. M. L.


Book ID
114524587
Publisher
International Union of Crystallography
Year
1977
Weight
572 KB
Volume
33
Category
Article
ISSN
0567-7408

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Synthesis of (25S)-5α-cholestane-3β, 26-
✍ Roberto Bovara; Renato Longhi; Francesco Nicotra; Giuseppe Vecchio 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 French ⚖ 308 KB

## 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