Hydrocarbons and alcohols ofEuphorbia lamprocarpa

Abstract

We have studied the epigeal part of E. lamprocarpa Prokh., family Euphorbiaeeae collected in the Syr'dar'ya region in the flowering period. The comminuted plant material was extracted with chloroform. The yield of extractive substances was 7.71%;, of them, the acetone-soluble fraction amounted to 5.88% and the acetone-insoluble fraction to 1.83%. The acetone-soluble fraction was treated with petroleum ether (bp 40-60 ° C) with heating. The fraction soluble in petroleum ether was passed through alumina. From the first fraction was isolated a hydrocarbon, octacosane [1], and from the second and third fractions triacontane [2]. Then the column was eluted successively with benzene, acetone, and methanol. The benzene fraction yielded an alcohol (hexacosanol [3]) and the acetone and methanol eluted triacontanol E4]. These substances were identified by mixed melting points and IR spectra with authentic samples. This is the first time these hydrocarbons and alcohols have been isolated from plants of the genus Euphorbia.