Nudaphantin, a new cytotoxic germacranolide, and the known elephantopin were isolated from Elephantopus nudatus, and their structures elucidated on the basis of physicochemical data, spectral evidence, and direct comparison with authentic samples.
The leishmanicidal compounds isolated from whole plants of Elephantopus mollis H.B.K. were identified as follows. Three new sesquiterpenoid lactones, 2,5-epoxy-2beta-hydroxy-8alpha-(2-methylpropenoyloxy)-4(15),10(14),11(13)-germacratrien-12,6alpha-olide,