Tetra- and Pentacyclic Triterpenoids from Epicuticular Wax of Euphorbia cyparissias L., Euphorbiaceae

Abstract

The epicuticular wax of Euphorbia cyparissias contains pentacyclic triterpenoids (34%) and primary alcohols (31%) as major components. The major triterpenoids are triterpenols (23%) consisting of α- and β-amyrin, glutinol, 24-methylenecycloartenol and ψ-taraxasterol. The triter-penones (10.5%) are composed of taraxerone. α- and β-amyrinone lupenone, glutinone, Ψ-taraxasterone β-fernenone and three further unidentified triterpenes. a-Amyrin was found esterified with homologous series of fatty acids. Minor components are alkanes, wax esters, aldehydes and free fatty acids. © 1989, Verlag der Zeitschrift. All rights reserved.