(2R,6R)-6-(allyloxymethyl)-12-benzyl-2-vinyl-1,2,3,6,7,12b-hexahydroindolo[2,3-a]quinolizin-4(12H)-one

(6R)-6-(allyloxymethyl)-12-benzyl-1,6,7,12b-tetrahydroindolo[2,3-a]quinolizin-4(12H)-one

(6R,12bS)-12-benzyl-6-((benzyloxy)methyl)-6,7,12,12b-tetrahydroindolo[2,3-a]quinolizin-4(1H)-one

(6R,12bS)-6-((allyloxy)methyl)-12-benzyl-3-(phenylselanyl)-2,3,6,7,12,12b-hexahydroindolo[2,3-a]quinolizin-4(1H)-one