Details

Autor(en) / Beteiligte

• Sary, Hanan G.
• Singab, Abdel Nasser B.
• Orabi, Khaled Y.

Titel

New Cytotoxic Guaianolides from Centaurea Aegyptiaca

Ist Teil von

• Natural product communications, 2016-06, Vol.11 (6), p.711-714

Ort / Verlag

Los Angeles, CA: SAGE Publications

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• The ethanol extract of Centaurea aegyptiaca aerial parts afforded two new chlorinated bioactive guaianolides, cenegyptin A (1) and cenegyptin B (2), in addition to four known sesquiterpenes (3-6). Their identities were established on the basis of their spectral data. The cytotoxicity (IC50, μM) of compounds 1-6 were evaluated against hepatic (HEPG2) and laryngeal (HEP2) carcinoma cell lines in comparison with normal fibroblasts (BHK). Compound 1 showed cytotoxic activity against HEPG2 and HEP2 with IC50 values of 7.2 ± 0.04 and 7.5 ± 0.02, respectively. However, compound 2 exhibited only a limited toxicity against both cell lines.