Tannins and related compounds. XLI. Isolation and characterization of novel ellagitannnins, punicacorteins A, B, C and D, and punigluconin from the bark of Punica granatum L

• TANAKA T

  Faculty of Pharmaceutical Sciences, Kyushu University 62

• NONAKA GEN-ICHIRO

  Faculty of Pharmaceutical Sciences, Kyushu University 62

• NISHIOKA ITSUO

  Faculty of Pharmaceutical Sciences, Kyushu University 62

Abstract

A chemical examination of the bark of Punica granatum L. (Punicaceae) has led to the isolation of five new ellagitannins, punicacorteins A, B, C and D, and punigluconin, together with the known ellagitannins, casuariin (6) and casuarinin (7). Based on chemical and spectroscopic evidence, the structures of punicacorteins A, B, C and D were established as novel C-glycosideic ellagitannins, the former two possessing a unique tetraphenyl (gallagyl) ester group (1 and 2), and the latter two containing a galloyl group in place of the gallagyl group (3 and 4), while punigluconin was characterized as 2,3-di-O-galloyl-4,6-(S)-hexahydroxydiphenoylgluconic acid (5).

Journal

• Chem. Pharm. Bull.

  Chem. Pharm. Bull. 34 656-663, 1986

  The Pharmaceutical Society of Japan

Keywords

• Punica granatum
• pomegranate
• Punicaceae
• punicacortein
• punigluconin
• C-glycosidic ellagitannin
• gallagic acid
• gluconic acid

Details

• CRID: 1570009752553457024
• NII Article ID: 110003626133
• NII Book ID: AA00602100
• ISSN: 00092363
• Web Site: https://search.jamas.or.jp/link/ui/1987012807
• Text Lang: en
• Data Source:
  • CiNii Articles