2-benzoyloxymethyl-8-phenyl-2,3-dihydro-oxazolo[3,2-c]pyrimidine-5,7-dione
2-acetoxymethyl-8-phenyl-2,3-dihydro-oxazolo[3,2-c]pyrimidine-5,7-dione
2-iodomethyl-8-phenyl-2,3-dihydro-oxazolo[3,2-c]pyrimidine-5,7-dione
2-bromomethyl-8-phenyl-2,3-dihydro-oxazolo[3,2-c]pyrimidine-5,7-dione