6-(3,5-dimethylisoxazol-4-yl)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carbonitrile

6-(3,5-dichlorophenyl)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carbonitrile

5-oxo-6-(4-(trifluoromethoxy)phenyl)-1,2,3,5-tetrahydroindolizine-8-carbonitrile

6-(4'-ethoxy-[1,1'-biphenyl]-4-yl)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carbonitrile

6-(5-chloro-2-methylphenyl)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carbonitrile