Tannins and Related Compounds. XXXIX.1) Procyanidin C-Glucosides and an Acylated Flavan-3-ol Glucoside from the Barks of Cinnamomum cassia Blume and C. obtusifolium Nees

Satoshi Morimoto, Gen Ichiro Nonaka, Itsuo Nishioka

研究成果: ジャーナルへの寄稿記事

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Along with procyanidins B-l (4), B-2 (5), B-5 (6) and B-7 (7), and the doubly linked proanthocyanidin, A-2 (8), two new procyanidin glucosides have been isolated from the bark of Cinnamomum cassia Blume (Lauraceae), and characterized as procyanidin B-2 8-C- and 6-C-β-D-glucopyranosides (1 and 2, respectively) on the basis of proton and carbon-13 nuclear magnetic resonance examinations and the results of thiolytic degradation. In addition, from the bark of Cinnamomum obtusifolium Nees an acylated flavan-3-ol glucoside (3) has been isolated, together with the known proanthocyanidins B-l (4), B-2 (5), B-5 (6) and A-2 (8). The structure of 3 has been established to be (+)-catechin 5-O-β-D-(2‘-O-feruloyl-6’-O-p-coumaroyl)-glucopyranoside on the basis of chemical and spectral evidence.

元の言語英語
ページ(範囲)643-649
ページ数7
ジャーナルChemical and Pharmaceutical Bulletin
34
発行部数2
DOI
出版物ステータス出版済み - 1 1 1986

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery

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