Abstract
Friedelanol, m.p. 309-310°, was isolated and proved from the leaves of Euonymus radicans SIEB. (Celastraceae). The epimer of this substance, epifriedelanol, has been isolated and detected in a fairly wide range of natural substances but this is the first time that a presence of friedelanol has been detected in plants. The mixture of triterpenes obtained from the leaves of E. japonica THUNB. was submitted to chromatography over activated alumina and the mixture was separated into friedelin m.p. 259-262°, epifriedelanol m.p. 282-284°, and friedelanol m.p. 309-311°.
