Two new phenolic glycosides 1 and 2 were isolated from the ethanolic extract of Viburnum melanocarpum P.S. Hsu and identified as (7R,8S)-syringylglycerol 8-O-β-D-allopyranoside (1) and (7S,8S)-syringylglycerol 8-O-β-D-allopyranoside (2). Their structures, including absolute configurations, were determined by spectroscopic data (1H and 13C NMR, HSQC, HMBC, and ORD) and chemical methods. In addition, compounds 1 and 2 were assayed for their free radical scavenging and α-glucosidase inhibitory activities.
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Acknowledgment
This work was supported by the National Natural Science Foundation of China (No. 31201563), and Top-Notch Academic Programs Project of Jiangsu Higher Education Institutions (PPZY2015C212). We are also grateful to the Analytical Detective Center, Yangzhou University for recording MS and NMR spectra.
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Published in Khimiya Prirodnykh Soedinenii, No. 1, January–February, 2019, pp. 24–25.
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Shen, J., Shao, JH., Chen, J. et al. Two New Phenolic Glycosides from Viburnum melanocarpum. Chem Nat Compd 55, 25–27 (2019). https://doi.org/10.1007/s10600-019-02607-9
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DOI: https://doi.org/10.1007/s10600-019-02607-9