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Abstract
Two new oligostilbenes, parthenocissins M (1) and N (2), together with two known compounds, miyabenol C (3) and ϵ-viniferin (4), were isolated from the stem of Parthenocissus quinquefolia. Their structures were elucidated by means of NMR, UV, IR, and MS data.
Acknowledgments
Financial support from the National Science and Technology Project of China (No. 2012ZX09301002-002-PCSIRT1007) and from the National Science and Technology Project of China (No. 2011ZX09307-002-01) is acknowledged.