Four lignans from Portulaca oleracea L. and its antioxidant activities |
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| Authors: | Yifei Ma Yongrui Bao Wenjie Zhang |
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| Institution: | School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, P. R. China |
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| Abstract: | Abstract A new lignan, named oleralignan (1) and three known componds (+)-syringaresinol (2), (+)-lirioresinol A (3) and monomethyl 3,3′,4,4′-tetrahydroxy-δ-truxinate (4) were isolated from the P. oleracea for the first time. The compound (1) were identified by 1D, 2D NMR spectroscopic methods and high resolution electrospray ionization time-of-flight mass spectrometry. In addition, it was found that the four lignans presented the scavenging activities in 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical quenching assay more than that of hydroxyl anisole (BHA).  | |
| Keywords: | Portulaca oleracea L lignans antioxidant activity |
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