Antibacterial diterpenes and their fatty acid conjugates from rice leaves

被引：18

作者：

Kono, Y ^{[1
]}

Kojima, A

Nagai, R

Watanabe, M

Kawashima, T

Onizawa, T

Teraoka, T

Watanab, M

Koshino, H

Uzawa, J

Suzuki, Y

Sakurai, A

机构：

[1] Ibaraki Univ, Sch Agr, Ami, Ibaraki 3000393, Japan

[2] Tokyo Univ Agr & Technol, Fuchu, Tokyo 1838509, Japan

[3] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

PHYTOCHEMISTRY | 2004年 / 65卷 / 09期

关键词：

Oryza sativa; gramineae; rice plant; resistance against Xanthomonas campestris pv. oryzae; antibacterial diterpene; ent-kaurane analogue; myristoyloxy-kaurane; palmitoyloxy-kaurane;

D O I：

10.1016/j.phytochem.2004.03.016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Six structurally oryzalide-related compounds, oryzadione (1), 2, 3, 4, 5 and 6, were isolated from a neutral fraction of the extract of healthy leaves using a bacterial leaf blight-resistant cultivar of a rice plant, "Norin-27", as a group of antimicrobial substances. Their structures were determined by spectroscopic studies to be kaurane analogues and kaurane analogues conjugated with fatty acids, i.e., 1: ent-15,16-epoxy-kauran-2,3-dione (enol form: ent-15,16-epoxy-2-hydroxy-kauran-1-en-3-one), 2: ent-15,16-epoxy-3beta-hydroxy-kauran-2-one, 3: ent-15,16-epoxy-3-oxa-kauran-2-one, 4: ent-15,16-epoxy-3beta-myristoyloxy-kauran-2-one, 5: ent-15, 16-epoxy-3alpha-palmitoyloxy-kauran-2-one, and 6: ent-15,16-epoxy-2beta-palmitoyloxy-kauran-2-one. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1291 / 1298

页数：8

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