Acute insecticidal activity of quassin and its congeners against the American cockroach.

Abstract

Quassin and 8 congeners, 1-9, were identified as active principles in Picrasma quassioides for the paralytic/acute insecticidal activity upon subcutaneous injection in the American cockroach. The activity was prolonged by applying the metabolic inhibitors for oxidation and esterification before injecting the quassinoids. The nature of the insecticidal… (More)

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