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  2. Phytochemical and cytotoxic studies on the roots of Euphorbia fischeriana

Phytochemical and cytotoxic studies on the roots of Euphorbia fischeriana

  • Bioorg Med Chem Lett. 2017 Jan 15;27(2):266-270. doi: 10.1016/j.bmcl.2016.11.063.
Qun Shi 1 Yi-Wei Sun 1 Dali Meng 2
Affiliations

Affiliations

  • 1 School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China.
  • 2 School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China. Electronic address: mengdl@163.com.
Abstract

With the aim of supporting the folk applications of Euphorbia fischeriana, a phytochemical study was performed, which led to the discovery of 9 compounds, including three new ones (1-3) and six known ones (4-9). Their structures were determined by 1D, 2D NMR, and HRESIMS analysis. In the cytotoxic assays on Hep-3B cell line, 2 showed stronger inhibitory effects (IC50 8.1μmol/L) than that of positive control, and 1, 8 and 9 also gave inhibitory effects in a certain degree with IC50 values of 12.5, 12.0 and 18.7μmol/L, respectively. While on A549, the cytotoxic activities of 1 (IC50 11.9μmol/L) and 8 (IC50 9.4μmol/L) were superior to that of 5-Fu, and those of 4 and 9 were moderate with IC50 values of 28.2 and 29.8μmol/L, respectively. In addition, both petroleum ether and dichloromethane extracts showed cytotoxic activities with different degree, while n-butanol extracts had no effect. The results clarified that the low-polarity fractions of E. fischeriana, including triterpenoids, abietane and tigliane-type Diterpenoids might be the potential bioactive ingredients which will exert strong antitumor effects.

Keywords

Cytotoxic activities; Diterpenoids; Euphorbia fischeriana; Pyrazine; Triterpenoids.

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