Benzofuran and other constituents of the essential oil of Ageratum conyzoides

被引：20

作者：

Pari, K

Rao, PJ ^{[1
]}

Subrahmanyam, B

Rasthogi, JN

Devakumar, C

机构：

[1] Indian Agr Res Inst, Div Entomol, New Delhi 110012, India

[2] Indian Agr Res Inst, Div Agr Chem, New Delhi 110012, India

[3] M M Post Grad Coll, Dept Chem, Modinagar 201204, India

来源：

PHYTOCHEMISTRY | 1998年 / 49卷 / 05期

关键词：

Ageratum conyzoides; Compositae; essential oil; chromenes; chromones; isodihydroeuparin derivative; nymphal mortality; Schistocerca gregaria;

D O I：

10.1016/S0031-9422(97)00803-0

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：

An investigation of the essential oil of Ageratum conyzoides afforded, in addition to known precocenes I and II, four new compounds, an isodihydroeuparin derivative, a chromene, chromone; and a chromanone. Their structures were established by spectroscopic methods as 2-(2'-methylethyl)-5,6-dimethoxybenzofuran, 2-(l'-oxo-2'-methylpropyl)-2-methyl-6,7-dimethoxy-chromene, 3-(2'-methylpropyl)-2-methyl-6,8-dimethoxy-chrom-4-one and 2-(2'-methylprop-2'-enyl)-2-methyl-6,7-dimethoxy-chroman-4-one respectively. The topical application of the oil to the nymphs of Schistocerca gregaria showed high nymphal mortality (91%). (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1385 / 1388

页数：4

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