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Eleven compounds (1–11), including two new compounds (1, 2), were isolated from the antioxidant portion of the alcoholic extract of Urtica fissa flowers. Their chemical structures were elucidated from extensive spectroscopic analysis. The results of activity evaluation indicated that some compounds of phenolic acids (3, 4), flavonoids (7, 9, 10), and lignans (1, 6) possess significant activities of...
The EtOH extract of the stems of Entada phaseoloides displayed potent antioxidant activity when assessed by the 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) and 2,2′‐azinobis(3‐ethylbenzothiazoline‐6‐sulfonic acid) (ABTS) radical‐scavenging, reducing power, β‐carotene‐bleaching, and superoxide radical‐scavenging analyses. Fractionation of the EtOH extracts showed that the AcOEt fraction is the most active,...
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