(-)-象牙(洪达木)酮宁

ethyl 2-((3aR,4S)-4-ethyl-4-(2-methoxy-2-oxoethyl)-6-oxo-3a,4,5,6-tetrahydro-1H-indolo[3,2,1-de][1,5]naphthyridin-3(2H)-yl)acetate

ent-18-oxo-eburnamonine

(41S,13aS)-13a-ethyl-2-hydroxy-2,3,5,6,13,13a-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridin-12(41H)-one

eburnamonine-17α-xanthogenate