ethyl 3-[3-(4-nitrophenyl)-3-(4,5-dihydro-5-oxo)-2-phenyloxazol-4-yl]acrylate

ethyl 2,6-diphenyl-5,6-dihydrofuro[3,2-d][1,3]oxazole-5-carboxylate

ethyl 3-(5-oxo-2-phenyl-4,5-dihydro-1,3-oxazol-4-yl)-3-phenylprop-2-enoate

ethyl (5-oxo-2,7-diphenyl-5H-pyrano[3,2-d][1,3]oxazol-6(7H)-ylidene)ethanoate

ethyl 3-[3,4-bis(phenylmethoxy)phenyl]prop-2-enoate