Journal
MOLECULES
Volume 18, Issue 6, Pages 7093-7102Publisher
MDPI
DOI: 10.3390/molecules18067093
Keywords
Rheum lhasaense A. J. Li et P. K. Hsiao; resveratrol oligomers; rheumlhasol A; rheumlhasol B; DPPH radical
Funding
- Yunnan Natural Science Foundation [2012FB172]
- Kunming Science and Technology Project [11H010401]
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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.
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