4-phenacylazetidin-2-one

2-phenacyloxyiminopropanedinitrile

4-amino-5-benzoyl-1,2-oxazole-3-carboxamide

4-amino-5-benzoyl-1,2-oxazole-3-carbonitrile

5-amino-6-cyano-7-phenyl-[1,2]oxazolo[4,5-b]pyridine-3-carboxamide