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New Resveratrol Oligomer Derivatives from the Roots of Rheum lhasaense
Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan University of Nationalities, Kunming 650031, Yunnan, China
Kunming Xianghao Technology Co., Ltd., Kunming 650204, Yunnan, China
* Author to whom correspondence should be addressed.
Received: 27 May 2013; in revised form: 10 June 2013 / Accepted: 13 June 2013 / Published: 18 June 2013
Abstract: Two new resveratrol trimer derivatives, named rheumlhasol A (1) and rheumlhasol B (2) were isolated from the methanolic extract of roots of Rheum lhasaense A. J. Li et P. K. Hsiao together with four known resveratrol dimer derivatives, including maximol A (3), gnetin C (4), e-viniferin (5), and pallidol (6). The structures were determined by combined spectroscopic methods and by comparison of their spectral data with those reported in the literature. All the compounds isolated from R. lhasaense were tested for their ability to scavenge1,1-diphenyl-2-picrylhydrazyl (DPPH) radical.
Keywords: Rheum lhasaense A. J. Li et P. K. Hsiao; resveratrol oligomers; rheumlhasol A; rheumlhasol B; DPPH radical
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Liu, W.-B.; Hu, L.; Hu, Q.; Chen, N.-N.; Yang, Q.-S.; Wang, F.-F. New Resveratrol Oligomer Derivatives from the Roots of Rheum lhasaense. Molecules 2013, 18, 7093-7102.
Liu W-B, Hu L, Hu Q, Chen N-N, Yang Q-S, Wang F-F. New Resveratrol Oligomer Derivatives from the Roots of Rheum lhasaense. Molecules. 2013; 18(6):7093-7102.
Liu, Wen-Bo; Hu, Lin; Hu, Qun; Chen, Na-Na; Yang, Qing-Song; Wang, Fang-Fang. 2013. "New Resveratrol Oligomer Derivatives from the Roots of Rheum lhasaense." Molecules 18, no. 6: 7093-7102.