8-acetyl-6-(2-fluoro-[1,1'-biphenyl]-4-yl)-2,3-dihydroindolizin-5(1H)-one

8-acetyl-6-(4-(methylsulfonyl)phenyl)-2,3-dihydroindolizin-5(1H)-one

3-(8-acetyl-5-oxo-1,2,3,5-tetrahydroindolizin-6-yl)benzonitrile

3-(8-acetyl-5-oxo-1,2,3,5-tetrahydroindolizin-6-yl)-4-methoxybenzaldehyde

5-(8-acetyl-5-oxo-1,2,3,5-tetrahydroindolizin-6-yl)furan-3-carbaldehyde