A novel antimicrobial indolizinium alkaloid from Aniba panurensis.

Activity-guided fractionation of an Aniba panurensis organic solvent extract has led to the isolation of the novel alkaloid 6,8-didec-(1Z)-enyl-5,7-dimethyl-2,3-dihydro-1H-indolizinium, as the trifluoroacetic acid salt (1). Its structure was determined by NMR and mass spectrometry. Bioassays performed in vitro demonstrated toxicity of compound 1 to a drug-resistant strain of Candida albicans.