Chabamides F and G, two novel dimeric alkaloids from the roots of piper chaba hunter

Abstract Two new dimeric alkaloids, chabamide F ( 1 ) and chabamide G ( 2 ), containing pyrrolidine rings, were isolated from the roots of piper chaba hunter. The structures of 1 and 2 were established on the basis of spectroscopic data, especially 2D NMR and mass spectral data.