Tannins and related compounds. CXVII. Isolation and characterization of three new ellagitannins lagerstannins A, B and C, having a gluconic acid core, from Lagerstroemia speciosa (L.) Pers

• 田中 隆

  Faculty of Pharmaceutical Sciences, Kyushu University

• 童 恵紅

  Faculty of Pharmaceutical Sciences, Kyushu University

• 徐 亜明

  Faculty of Pharmaceutical Sciences, Kyushu University

• 石丸 幹二

  Faculty of Pharmaceutical Sciences, Kyushu University

• 野中 源一郎

  Faculty of Pharmaceutical Sciences, Kyushu University

• 西岡 五夫

  Faculty of Pharmaceutical Sciences, Kyushu University

抄録

Lagerstannins A (6), B (11) and C (8), ellagitannins having a gluconic acid core, have been isolated from the fruits and leaves of Lagerstroemia speciosa (L.) PERS. (=L. flos-reginae RETZ.)(Lythraceae). On the basis of chemical and spectroscopic evidence, their structures were established as 2,3;4,6-bis-O-(S)-hexahydroxydiphenoyl-D-gluconic acid (6), 2,3,5-O-(S, R)-flavogallonyl-4,6-O-(S)-hexahydroxydiphenoyl-D-gluconic acid (11), and 5-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-D-gluconic acid (8), respectively. Furthermore, the structure of an ellagitannin, punigluconin, previously isolated from the bark of Punica granatum L., was revised as 2,5-di-O-galloyl-4,6-O-(S)-hexahydroxy-diphenoyl-D-gluconic acid (10), based on spectral re-examination.

収録刊行物

• Chem Pharm Bull

  Chem Pharm Bull 40 2975-2980, 1992

  公益社団法人日本薬学会

キーワード

• Lagerstroemia speciosa
• Lythraceae
• lagerstannin
• punigluconin
• Punica granatum
• gluconic acid
• flavogallonic acid
• ellagitannin
• tannin

詳細情報

• CRID: 1570291227531958016
• NII論文ID: 110003629668
• NII書誌ID: AA00602100
• ISSN: 00092363
• 本文言語コード: en
• データソース種別:
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