Cytotoxic phenolic constituents from Hypericum japonicum

Add time:09/01/2019    Source:sciencedirect.com

Nine undescribed compounds, including five xanthone derivatives, two flavonoids, one 2-pyrone derivative, and one undescribed naturally occurring compound, along with 30 known phenolic compounds, were isolated from Hypericum japonicum. In addition, hyperjaponols A and B were identified as racemates. The structures and absolute configurations of the undescribed compounds were determined by comprehensive MS, NMR spectroscopy, and electronic circular dichroism (ECD) calculations. The cytotoxic effects of the isolated compounds on two human tumour cell lines (HEL and MDA-MB-231) were evaluated by the MTT assay. Eighteen compounds showed good inhibitory activities against the HEL cell line, with IC50 values of 3.53–18.7 μM, while nine compounds exhibited moderate cytotoxicity against the MDA-MB-231 cancer cell line, with IC50 values ranging from 4.92 to 10.75 μM. Their preliminary structure-activity relationship of the isolated compounds was also discussed.

We also recommend Trading Suppliers and Manufacturers of 2-(2-BUTENYL)PHENOL (cas 18448-88-9). Pls Click Website Link as below: cas 18448-88-9 suppliers

Prev:Regioselective dienolate formation and alkylation of alkyl 2-methyl cyclohexene-1 carboxylates
Next:Short communicationNitric oxide inhibitory and anti-Bacillus activity of phenolic compounds and plant extracts from Mesua species)