A New Phenolic Glycoside with α-Glucosidase Inhibitory Activity from Viburnum cylindricum Leaves
Tóm tắt
One new phenolic glycoside (1) and two known stereoisomers (2 and 3) were isolated from the methanol extract of Viburnum cylindricum leaves. Their structures were determined as (7R,8S)-guaiacylglycerol 9-O-β-D-glucopyranoside (1), (7S,8R)-guaiacylglycerol 9-O-β-D-glucopyranoside (2), and (7R,8R)-guaiacylglycerol 9-O-β-D-glucopyranoside (3), respectively, by spectroscopic data (1D, 2D NMR, HR-ESI-MS, and ORD) and chemical methods. In addition, compound 1 showed potential α-glucosidase inhibitory activity with the IC50 value of 10.73 μM in comparison with the positive control acarbose (IC50 = 18.84 μM).
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