Constituents of a Fern, Davallia mariesii MOORE. II. Identification and 1H- and 13C-Nuclear Magnetic Resonance Spectra of Procyanidin B-5, Epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin, and Epicatechin-(4β→6)-epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin

Cheng-Bin CUI; Yasuhiro TEZUKA; Tohru KIKUCHI; Hirofumi NAKANO; Tatsuya TAMAOKI; Jong-Hee PARK

doi:10.1248/cpb.40.889

Constituents of a Fern, Davallia mariesii MOORE. II. Identification and ¹H- and ¹³C-Nuclear Magnetic Resonance Spectra of Procyanidin B-5, Epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin, and Epicatechin-(4β→6)-epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin

Cheng-Bin CUI, Yasuhiro TEZUKA, Tohru KIKUCHI, Hirofumi NAKANO, Tatsuya TAMAOKI, Jong-Hee PARK

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Keywords: Davallia mariesii, Devalliaceae, condensed tannin, procyanidin B-5, epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin, epicatechin-(4β→6)-epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin, ^1H-NMR, ^<13>C-NMR, 2D NMR, protein kinase C inhibitor

JOURNAL FREE ACCESS

1992 Volume 40 Issue 4 Pages 889-898

DOI https://doi.org/10.1248/cpb.40.889

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Abstract

Procyanidin B-5 (1), epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin (2), and epicatechin-(4β→6)-epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin (3), which showed an inhibitory effect toward protein kinase C, were isolated from the rhizomes of Davallia mariesii MOORE. Detailed analyses of their ¹H- and ¹³C-nuclear magnetic resonance spectra were carried out by the use of two-dimensional nuclear magnetic resonance techniques.

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