PSII inhibitory activity of resorcinolic lipids from Sorghum bicolor

被引：32

作者：

Rimando, AM

Dayan, FE

Streibig, JC

机构：

[1] USDA ARS, Nat Prod Utilizat Res Unit, University, MS 38677 USA

[2] Royal Vet & Agr Univ, Sect Weed Sci, Dept Agr Sci, DK-1871 Frederiksberg C, Denmark

来源：

JOURNAL OF NATURAL PRODUCTS | 2003年 / 66卷 / 01期

关键词：

D O I：

10.1021/np0203842

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Resorcinolic lipids were isolated from the root extracts of Sorghum bicolor and identified as 4,6-dimethoxy2-[(8'Z,11'Z)-8',11',14'-pentadecatriene]resorcinol (4), 4-methoxy-6-ethoxy-2-[(8'Z,11'Z)-8',11',14'-pentadecatrienelresorcinol (5), and 4-hydroxy-6-ethoxy-2-[(10'Z,13'Z)-10',13',16'-heptadecatrienelresorcinoI (6). Compounds 4 and 5 inhibited photosynthetic oxygen evolution (IC50 0.09 and 0.20 muM, respectively). Compound 4 could not be enzymatically converted to a quinone, suggesting that the quinone moiety is not required for its photosystem II inhibitory activity. Compounds 5 and 6 are reported for the first time.

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页码：42 / 45

页数：4

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