Structures of eight new triterpenoids and isolation of other triterpenoids and epi-ikshusterol from the stems of Lithocarpus cornea
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 1,p. 23-30
- https://doi.org/10.1039/p19760000023
Abstract
Eight new triterpenoids from the light petroleum extract of the stems of Lithocarpus cornea(Lour.) Rhed. have been proved to be taraxer-14-ene-3β,29-diol (VIII) and its diacetate (VII), 29-hydroxytaraxer-14-en-3-one (X) and its acetate (IX), 14α-hydroxytaraxeran-3-one (XXIX), taraxerane-3β,14α-diol (XXX), 22-hydroxy-21αH-hopan-3-one (XXIII), and lup-20(29)-ene-3β,27-diol (XXXII). Other triterpenoids isolated from the same extract, besides those already reported 1 were lupeol, betulin, and myricadiol (I). The steroid epi-ikshusterol (stigmast-5-ene-3β,7β-diol)(XXXVII) was also obtained.Keywords
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