Two ellagitannins from Punica granatum heartwood. Sayed A.A El-Toumy and Hans W Rauwald, Phytochemistry, Volume 61, Issue 8, December 2002, Pages 971–974, doi:10.1016/S0031-9422(02)00435-1
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Tannins and Related Compounds. XLI. : Isolation and Characterization of Novel Ellagitannins, Punicacorteins A, B, C, and D, and Punigluconin from the Bark of Punica granatum L. Tanaka Takashi, Nonaka Gen-Ichiro and Nishioka Itsuo, Chemical & Pharmaceutical Bulletin, 1986-02-25, 34(2), pages 656-663 (abstract)