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Chemistry & Biodiversity 2009 Mar ; (3) :0
Nematicidal cardenolides from Nerium indicum Mill.
Wang XB,   Li GH,   Zheng LJ,   Ji KY,   Lü H,   Liu FF,   Dang LZ,   Mo MH,   Zhang KQ  

Abstract
Three nematicidal cardenolides were obtained from the AcOEt extract of Nerium indicum Mill. by bioassay-guided fractionation. They include a new compound, 3beta-O-(beta-D-diginosyl)-14,15alpha-dihydroxy-5alpha-card-20(22)-enolide (1), and two known compounds, uzarigenin (2) and cardenolide N-1 (3). The median lethal concentrations (LC(50)) of compounds 1-3 against the nematodes Bursaphelenchus xylophilus, Panagrellus redivivus, and Caenorhabditis elegans at 72 h were 103.3, 49.0, and 45.4 mg l(-1), 257.0, 62.7, and 177.8 mg l(-1), and 242.9, 29.1, and 41.7 mg l(-1), respectively. This is the first report about the nematicidal activity of cardenolides.

DHARA ID: D037212 Pubmed ID: 19319871


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