Abstract
Two new piscicidal sesquiterpenes, buddledin A (1) and B (2), have been isolated from the root bark of Buddleja davidii FRANCH. These structures have been deduced on the basis of spectroscopic and chemical evidences, and confirmed by X-ray analysis of the bromohydrin (8). The absolute configuration was determined by the applications of benzoate rule and dibenzoate chirality rule. Buddledin A and B are the first examples of toxic compounds possessing the caryophyllene skeleton.
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