Triterpenes from Euphorbia broteri

The triterpenes have been investigated in the aerial part and the latex of Euphorbia broteri. The aerial part contains two new triterpenes, 25,26,27-trisnor-3β-hydroxy-24-dimethoxycycloartane and 3,4-seco-4(23),14-taraxeradien-3-oic acid, and eleven other triterpenes identified as cycloartenol, butyrospermol, 24-methylenecycloartanol, cycloart-25-ene-3β,24-diol, euphan-8,25-diene-3β,24-diol, 3β-hydroxycycloart-25-ene-24-one, obtusifoliol, 3,4-seco-4(23),20(30)-lupadien-3-oic acid (canaric acid), betulin, cycloart-23-ene-3β,25-diol and the C-24 diastereomers of cycloartane-3β,24,25-triol. The latex contains a new triterpene, 24,25-epoxycycloartanol (C-24 diastereomers), and nine other compounds identified as euphol acetate, cycloartenyl acetate, butyrospermyl acetate, 24-methylenecycloartanyl acetate, euphol, cycloartenol, butyrospermol, 24-methylenecycloartanol and obtusifoliol.