In 2003, scientists at Institut Européen de Chimie et Biologie in Pessac, France found that when the oak tannin vescalagin interacts with a flavanoid in wine acutissimin A is created. In separate studies this phenolic compound has been shown to be 250 times more effective than the pharmaceutical drug Etoposide in stopping the growth of canceroustumors.
^Quideau S, Jourdes M, Saucier C, Glories Y, Pardon P, Baudry C (December 2003). "DNA topoisomerase inhibitor acutissimin a and other flavano-ellagitannins in red wine". Angewandte Chemie42 (48): 6012–4. doi:10.1002/anie.200352089. PMID14679557.
^Kashiwada Y, Nonaka G, Nishioka I, Chang JJ, Lee KH (August 1992). "Antitumor agents, 129. Tannins and related compounds as selective cytotoxic agents". Journal of Natural Products55 (8): 1033–43. doi:10.1021/np50086a002. PMID1431932.
^Quideau, StéPhane; Jourdes, Michael; Saucier, Cédric; Glories, Yves; Pardon, Patrick; Baudry, Christian (2003). "DNA Topoisomerase Inhibitor Acutissimin A and Other Flavano-Ellagitannins in Red Wine". Angewandte Chemie115 (48): 6194–6. doi:10.1002/ange.200352089. "While it would be quite inappropriate to infer from the presence of acutissimin A in red wine that this beverage possesses antitumor properties, our work shows for the first time that wine contains polyphenolic molecules displaying both ellagitannin and flavanoid structural features."