Nematicidal prenylated flavanones from Phyllanthus niruri

Effect of plant essential oils on mortality of the stem nematode (Ditylenchus dipsaci)

“…In this field, attention has so far been concentrated on root-knot nematodes of the genus Meloidogyne as these are the most widespread nematode pests on a global scale. The range of substances tested in recent years includes aqueous and ethanol extracts of Carum carvi, Mentha rotundifolia, Origanum vulgare (Oka et al 2000), Calotropis procera (Reina et al 2002), Artemisia vulgaris (Costa et al 2003), Tamarindus indica, Cassia siamea, Isoberlinia doka, Dolnix regia, Cassia sieberiana (Bello et al 2006), Tagetes erecta (Natarajan et al 2006), Avicennia marina (Tariq et al 2007), Chromolaena odorata (Thoden et al 2007), Ruta graveolens (Sasanelli et al 2007), Azadirachta indica ( Javed et al 2007( Javed et al , 2008, and Phyllanthus niruri (Shakil et al 2008). An extensive list of active compounds (alkaloids, diterpenes, phenols, polyacetylenes, sesquiterpenes, thyenil derivatives) which can be used in plant parasitic nematode management was compiled by Chitwood (2002).…”

Current Status of Botanical Pesticides for Crop Protection

“…The nematicidal activity against M. incognita of 8-(3-methyl-but-2-enyl)-2-phenyl chroman-4-one (LD 50 70.9 µg/ml) and 2-(4-hydroxyphenyl)-8-(3-methyl-but-2-enyl)-chroman-4-one (LD 50 14.5 µg/ml) (Fig. 3) was dose-dependent (Shakil et al, 2008).…”

Synthesis and pesticidal activity of new N-alkyl-N-[1-(2-hydroxyphenyl) ethyl]amines

“…To a solution of schiff base (0.01 mole) [15] in dry methanol (10 mL), sodium borohydride (0.01mole) was added in small lots at 0-5…”

“…[13] Our group has been actively involved in the development of heterocyclic molecules for their potential use in pest control. [14,15] In view of the importance of heterocyclic compounds in general, and amines in particular, we envisaged upon the synthesis of new heterocyclic amines and exploited their potential in pest control, namely, fungicidal and insecticidal activity.…”