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Baccharis linearis Ruiz et Pav, Baccharis rbomboidalis Remy, and Baccharis solieri Remy (Compositae). The ethanolic extracts afforded a novel chromene 1 along with seventeen known compounds (Table 1).Chromenes are of common occurrence in the Compositae (1), and the methyl ester of compound 1 was recently reported from a Wemeria species (2). In addition to chromene 1, oleanolic acid, stigmasterol, ß-amyrin, and friedelinol were also present in varying amounts in the three Baccharis species (Table 1). EXPERIMENTAL Plant materials.-The plants were collected at the base of the mountains near Santiago, Chile, in October 1984. Voucher specimens are kept at the

A chemical study of a dichloromethane extract of Balantiopsis cancellata led to the isolation of four known 2-phenylethanol esters (1-4) and a phenylethanediol benzoate (5). Antifeedant activity toward Spodoptera littoralis (disk-choice bioassay) and growth inhibition of the phytopathogen Cladosporium herbarum in TLC-bioautography assays were determined. The results show that the antifeedant and antifungal activity of the extract is attributable mainly to the trans-beta-methylthioacrylate 4.