ethyl acetoxy-[6-cyano-1,1-(ethylenedioxy)-5-oxo-1,2,3,5-tetrahydroindolizin-7-yl]acetate

ethyl 2-acetoxy-2-[6-cyano-1,1-(ethylenedioxy)-5-oxo-1,2,3,5-tetrahydroindolizin-7-yl]butanoate

2-溴喹啉

1,5-dioxo(5'-ethyl-2'H,5'H,6'H-6-oxopyrano)[3',4'-f]-Δ6(8)-tetrahydroindolizine

6-(acetoxymethyl)-1,1'-(ethylenedioxy)-7-[1'-(ethoxycarbonyl)propyl]-5-oxo-Δ6(8)-tetrahydroindolizine