(6R,12bS)-4-oxo-1,2,3,4,6,7,12,12b-octahydropyrido[2,1-a]β-carboline-6-carbaldehyde

(6R,12bS)-tert-butyl-6-formyl-1,2,3,4,6,7-hexahydro-4-oxoindolo[2,3-a]quinolizine-12(12bH)-carboxylate

9-(methoxymethyl)-β-carboline lactam

(S)-3-(1-Hydroxy-ethyl)-12-methoxymethyl-3-phenylselanyl-2,3,6,7,12,12b-hexahydro-1H-indolo[2,3-a]quinolizin-4-one

(S)-3-Eth-(Z)-ylidene-12-methoxymethyl-2,3,6,7,12,12b-hexahydro-1H-indolo[2,3-a]quinolizin-4-one