Fresh leaf material (10 kg) was cut in small pieces (0.8–1.0 cm3) and extracted with H2O kept boiling for 3 h. The extracts were then concentrated to 100 ml at reduced pressure, filtered on Whatman paper and kept at 30 C until needed. Aliquots (5 ml) of the aqueous extract of W. filifera leaf basal tissues were chromatographed through a column (30 5 cm) filled with silica gel RP-18, packed with 200 mL MeOH and eluted according to a linear gradient elution profile from 90% to 0% A in B, where solvent A (150 ml) was HCOOH 5% in H2O and solvent B (150 ml) was absolute EtOH. The obtained fractions (1 ml volume) were checked for purity on Merck precoated cellulose 20 20 cm glass TLC plates, eluted with CH3CH2CH2OH: H2O:CH3COOH (20:80:1, v/v/v) or CH3CH2CH2- OH:H2O (20:80, v/v) according to Vovk et al., 2005. The separated chromatographic fractions containing (1) were assayed in antifungal and larval inhibition trials as below described. The quantitation of (1) in tissues and in solutions has been carried out by means of its e value, calculated spectrophotometrically by dissolving known amounts of the purified cpd in MeOH