The structure of 1-cinnamoylmelianolone, a new insecticidaltetranortriterpenoid, from L. (Meliaceae)

Terpenos com atividade inseticida: uma alternativa para o controle químico de insetos

“…Os resultados obtidos com a azadiractina intensificaram ainda mais a busca por outros possíveis compostos com atividade inseticida. Dos extratos metanólicos dos frutos de M. azedarach (Meliaceae) foram isolados a 1-cinamoilmelianolona (94) (Figura 11), que é estruturalmente semelhante à azadiractina e apresentou atividade inseticida equivalente 8,54 ; o azedaralídeo (99), 12-α-acetóxi-fraxinelona (100), fraxinelona (101) e fraxinelonona (102) . Uma vez que, freqüentemente, estes compostos agem no comportamento e na fisiologia, particularmente de insetos, pode-se sugerir que a principal função para a planta produzir limonóides seja a proteção contra insetos herbívoros.…”

Efficacy of extracts of Melia azedarach L. callus, leaves and fruits against adults of the sweetpotato whitefly Bemisia tabaci (Hom., Aleyrodidae)

“…Many limonoids have been isolated from M. azedarach and they were found to have insecticidal effects (N AKATANI et al., 1981; O ELRICHS et al., 1983; P OHNL , 1985; K RAUS et al., 1987; C HUNG H UANG et al., 1996). L EE et al. (1987) found that methanolic extracts of chinaberry fruits possess insecticidal potency that is comparable or equivalent to that of Azadirachta indica seed extracts and/or that of azadirachtin.…”

Potent Limonoid Insect Antifeedant fromMelia azedarach

“…1) Many limonoids have been isolated from Azadirachta indica, 2,3) Melia azedarach, [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] and M. toosendan, 23,24) among others. 25,26) M. azedarach is native to India and China, but currently grows in a number of continents including Africa, Australia and the Americas.…”

“…The root and stem bark of this tree have yielded sendanins, [4][5][6][7][8] trichilins, [8][9][10] azedarachins, 8,9) meliacarpins, 5,9,11) nimbolins 12) and other types of limonoids 12,13) that have been found to have cytotoxic and antifeedant activities. Moreover, sendanin, 14) nimbolidins, 15) trichilins, 16) meliacarpins, [17][18][19] and others 20,21) have been obtained from the fruit, while meliacarpins 22) have also been reported in the leaves, most of these compounds showing antifeedant properties.…”