Nematocyphol is triterpene constituents from Euphorbia nematocypha Hand-Mazz. Seven triterpenoids have been extracted from the roots of Euphorbia nematocypha Hand-Mazz. through chromatography on 20% AgNO3-silica gel. One of them was identified as a new compound named nematocyphol on the basis of spectral data (IR, EIMS, 1H-NMR and 13C-NMR). Its structure was deduced as IVa. Other compounds were identified as nepehinol acetate (I), germanicol acetate (II), euphol (III), tanaxastanol (Va), 24-methylenecycloartanol (VIa) and nepehinol (VIIa). These compounds were obtained for the first time from this plant. References: Cao D, Su YL, Yang JS. [Triterpene constituents from Euphorbia nematocypha Hand-Mazz]. Yao Xue Xue Bao. 1992;27(6):445-51. Chinese. PubMed PMID: 1442072.

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CAS：143490-50-0