1,2,3,4-tetrahydro-1-(3-methoxycarbonylpropyl)-2-benzyl-β-carboline

(6R,12bS)-tert-butyl-1,2,3,4,6,7-hexahydro-4-oxo-6-[(phenylselanyl)carbonyl]indolo[2,3-a]quinolizine-12(12bH)-carboxylate

(12bS)-Ethyl 4-oxo-1,2,3,4,6,7,12,12b-octahydroindolo<2,3-a>quinolizine-3-carboxylate

(+)-(1R,12bR,SR)-1-<(4-methylphenyl)sulfinyl>-1,2,3,4,6,7,12,12b-octahydro-4-oxoindolo<2,3-a>quinolizine

methyl 4-(4,9-dihydro-3H-pyrido[3,4-b]indol-1-yl)butanoate