An examination of the Euphorbiaceae of Hong Kong. Part VI. Isolation and structure of Glochidonol, a new triterpene ketol from Glochidion wrightii Benth

Abstract

Glochidonol, isolated from the stems of Glochidion wrightii Benth (Euphorbiaceae), has been shown to be 1β-hydroxylup-20(29)-en-3-one (I) by chemical and n.m.r. spectroscopic evidence. The mass spectrum of glochidonyl acetate is discussed. Other compounds obtained from both the leaves and stems of the same plant are friedelin, glochidone, friedelan-3β-ol, β-sitosterol, and glochidiol. Lupenone and lupeol are also found in the stems.