Premium
Occurrence of 3‐keto triterpenes in the unsaponifiable matter of sal ( Shorea robusta ) seed fat
Author(s) -
Kolhe J. N.,
Bhaskar Anil,
Bringi N. V.
Publication year - 1981
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02535350
Subject(s) - unsaponifiable , triterpene , terpene , shorea robusta , chemistry , fractionation , botany , gas chromatography , fraction (chemistry) , organic chemistry , chromatography , biology , medicine , alternative medicine , pathology
The unsaponifiable matter from sal ( Shorea robusta ) seed fat contains, in addition to the usual sterols and triterpenes, 12% of another fraction mainly consisting of 3‐keto triterpenes. The major constituents of the keto triterpene fraction have been identified as β‐amyrenone, cycloartenone and lupenone. The structural assignments were based on physical and spectral characteristics (infrared, 1 H‐ and 13 C‐nuclear magnetic resonance, and gas chromatography‐mass spectroscopy) of the alcohol acetates obtained by reduction, acetylation and fractionation of individual components by argentation thin layer chromatography. This appears to be the first recorded instance of the occurrence of 3‐keto triterpenes in vegetable fats.