Ampelopsin B is a stilbenoid dimer found in Ampelopsis glandulosa var. hancei (formerly Ampelopsis brevipedunculata var. hancei).Chemical determination of the absolute structures of resveratrol dimers, ampelopsins A, B, D and F. Yoshiaki Takaya, Ke-Xu Yan, Kenji Terashima, Junko Ito and Masatake Niwa, Tetrahedron, 2002, 58, pages 7259–7265,
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