1-((tert-butyldimethylsilyl)oxy)-3-(1,3-dimethyl-2,4-dioxo-5-phenyl-3,4-dihydro-1H-pyrrolo[3,4-d]pyrimidin-6(2H)-yl)propan-2-yl methanesulfonate

9-(4-chlorothiazol-2-yl)-1,3-dimethyl-5-phenyl-8,9-dihydro-1H-pyrimido[4,5-a]pyrrolizine-2,4(3H,7H)-dione

(S)-1,3-dimethyl-2,4,10-trioxo-5-phenyl-1,2,3,4,7,8,9,10-octahydropyrimido[4,5-a]indolizine-7-carboxylic acid

6-(5-bromofuran-2-yl)-7,9-dimethyl-2-nitro-11-phenyl-6H-benzo[b]pyrimido[4',5':3,4]pyrrolo[1,2-d]oxazine-8,10(7H,9H)-dione

6-(2-aminoethyl)-1,3-dimethyl-5-phenyl-1,6-dihydropyrrolo[3,4-d]pyrimidine-2,4-dione