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Updated: Jun 1, 2026
06:52
Synthesis of Esters Via a Greener Steglich Esterification in Acetonitrile
Published on: October 30, 2018
(20S)-20-Acet-oxy-4-pregnene-3,16-dione from Commiphora wightii
Abstract:
The title triterpene compound, C(23)H(32)O(4), isolated from Commiphora wightii features four trans-fused rings, among which the five-membered ring adopts an envelope conformation, the cyclo-hexene ring adopts a half-chair conformation and the two cyclo-hexane rings exist in chair conformations. The asymmetric unit contains two independent mol-ecules. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
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