Paper
Methyl 4-hydroxy-3-(3'-methyl-2'-butenyl)benzoate, major insecticidal principle from Piper guanacastensis.
Published Mar 21, 1997 · R. Pereda-Miranda, C. Bernard, T. Durst
Journal of natural products
36
Citations
1
Influential Citations
Abstract
The CHCl3-soluble extract of Piper guanacastensis (Piperaceae) was found to have noteworthy insecticidal activity to Aedes atropalpus mosquito larvae (LC50 80.5 micrograms/mL). Bioassay-guided fractionation afforded methyl 4-hydroxy-3-(3'-methyl-2'-butenyl)benzoate (1) as the major bioactive constituent (LC50 20.5 micrograms/mL). The separation of compound 1 from its transesterification artifact (2), ethyl 4-hydroxy-3-(3'-methyl-2'-butenyl)benzoate, was achieved by recycling reversed-phase HPLC. The flavonoids acacetin, chrysin, and pinostrobin were also isolated from the active fraction but did not display insecticidal properties.
Methyl 4-hydroxy-3-(3'-methyl-2'-butenyl)benzoate is the major insecticidal principle from Piper guanacastensis, with flavonoids acacetin, chrysin, and pinostrobin showing no such properties.
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