RESUMO
The CHCl3 extract of the whole plant of Arundo donax yielded N-(4'-bromophenyl)-2,2-diphenylacetanilide [1]. The structure was determined on the basis of chemical, spectroscopic, and X-ray crystallographic data. Compound 1 has not been previously reported as a natural product and showed inhibition of feeding for boll weevils.
Assuntos
Acetanilidas/química , Compostos Benzidrílicos/química , Insetos , Inseticidas/química , Plantas/química , Acetanilidas/farmacologia , Animais , Compostos Benzidrílicos/farmacologia , Cristalografia por Raios X , Comportamento Alimentar/efeitos dos fármacos , Inseticidas/farmacologia , Espectroscopia de Ressonância Magnética , TailândiaRESUMO
The mangrove plant Heritiera littoralis has been utilized by natives of the Philippines as a fish poison. The petroleum ether extract of this plant has shown toxicity to fish (Tilapia nilotica). A new piscicide, which was assigned the name heritonin [1], has been identified as one of the compounds with ichthyotoxicity. The structure was elucidated by spectroscopic methods.
Assuntos
Peixes/fisiologia , Lactonas , Plantas Tóxicas/análise , Sesquiterpenos/isolamento & purificação , Animais , Fenômenos Químicos , Química , Espectroscopia de Ressonância Magnética , Sesquiterpenos/toxicidade , Espectrofotometria UltravioletaRESUMO
Extracts of the twigs and stems of the mangrove plant Aegiceras corniculatum demonstrated toxicity to fish (Tilapia nilotica). 5-O-Methylembelin was isolated and was shown to be toxic to fish at a concentration of 1 ppm within a period of 75 min. The structure of 5-O-methylembelin was determined by a study of spectroscopic properties and comparison with an authentic synthetic sample.
