Abstract
Brine shrimp lethality-directed fractionation of the 95% EtOH extract of the powdered dried bark of Persea americana Mill. var. americana (Lauraceae) led to the isolation of one new C 20 alkyl-alkene acetonyl methyl ester designated persealide (1). Persealide showed moderate cytotoxicity against three solid tumor cell lines: human lung carcinoma (A-549), human breast carcinoma (MCF-7) and human colon adenocarcinoma (HT-29).