1-allyl-3-hydroxy-3-(2'-oxopropyl)indolin-2-one

6,7-dihydro-9,10-methylenedioxypyrrolo[3,2,1-de]phenanthridine-4,5-dione

(3-chloro-2-oxo-indolin-3-yl)-phenyl-acetonitrile

4-acetoxy-9-carboxamido-3,4-dihydro-1H-acridin-2-one ethylene acetal

1-(diphenylmethyl)-3-hydroxy-3-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one