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Abstract
Two new diterpenoid glycosides, fructusnoids D (1) and E (2), and two new monoterpenoid glycosides (3, 4), together with three known diterpenoid glycosides (5-7) and three known monoterpenoid glycosides (8-10), were isolated from the fruits of Xanthium chinense. Their structures were elucidated by spectrometric analyses.
Acknowledgements
We are grateful to the Department of Instrumental Analysis, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College for measuring the IR, NMR, MS, and HRESIMS.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Funding
This project was financially supported by the National Natural Science Foundation of China [grant number 81573321], the CAMS Innovation Fund for Medical Science [grant number 2017-I2M-3-010], Young Elite Scientists Sponsorship Program by CAST [YESS, grant number 2016QNRC001], and National Science and Technology Project of China [No. 2014ZX09304306-001].