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Abstract
Two new monoterpene glucosides: xanmonoter A (1) and xanmonoter B (2) were isolated from Xanthium strumarium. Their structures were elucidated on the basis of 1D and 2D NMR, MS and CD analysis. Compounds 1 and 2 were tested for their anti-inflammatory activity with IC50 values of 17.4, 22.1 μM, respectively.
Disclosure statement
No potential conflict of interest was reported by the authors.
Funding
The work was supported financially by the National Natural Science Foundation of China [grant number 81703684], Natural Science Foundation of Heilongjiang Province [grant number H2015037], Postdoctoral initial fund of Heilongjiang Province; University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province [grant number UNPYSCT-2017215 and UNPYSCT-2017219], Heilongjiang University of Chinese Medicine Doctoral Innovation Foundation [grant number 2014bs05], Application Technology Research and Development Projects of Harbin Technology Bureau [grant number 2014RFQXJ149], Innovative Talents Funding of Heilongjiang University of Chinese Medicine [grant number 2012RCQ20], Heilongjiang Postdoctoral Scientific Research Developmental Fund [grant number LBH-Q16210], Heilongjiang University of Chinese Medicine Doctoral Innovation Foundation [grant number 2013bs04].