Decarbomethoxytabersonine

(5α,12β,19α)-1,2,6,7-Tetradehydroaspidospermidine

(3aR,10bR)-3aα-Ethyl-3a,4,5,11,12,13aα-hexahydro-1H-indolizino[8,1-cd]carbazole

(4aR)-4aα-Ethyl-4a,5,6,11cα-tetrahydro-2H-1,11bβ-ethano-1H-pyrido[3,2-c]carbazole