Two new flavanol-flavonol C(4)(C) to C(5)(D) linked promelacacinidin dimers were isolated from the heartwood of Acacia nigrescens. Their structures were elucidated by extensive (1)H and (13)C NMR spectroscopic studies, and the main conformational features are discussed.
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Identification of two novel promelacacinidin dimers from Acacia nigrescens.
J Nat Prod
May 2002
Department of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein, 9300 South Africa.
Two new flavanol-flavonol C(4)(C) to C(5)(D) linked promelacacinidin dimers were isolated from the heartwood of Acacia nigrescens. Their structures were elucidated by extensive (1)H and (13)C NMR spectroscopic studies, and the main conformational features are discussed.
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