3-ethylidene-2,3,6,7,12,12b-hexahydro-1H-indolo[2,3-a]quinolizin-4-one

(E)-2-(2-bromoethyl)-2-buten-1-yl tert-butyldimethylsilyl ether

(S)-1-[(E)-3-(tert-Butyl-dimethyl-silanyloxymethyl)-pent-3-enyl]-9-methoxymethyl-2,3,4,9-tetrahydro-1H-β-carboline