2-methyl-5-benzylsulfonylamino-6-oxo-1,6-dihydro-1-pyrimidinylacetyl-Ng-nitro-L-argininal ethyl cyclol
N-((S)-1-Carbamimidoyl-2-ethoxy-piperidin-3-yl)-2-(2-methyl-6-oxo-5-phenylmethanesulfonylamino-6H-pyrimidin-1-yl)-acetamide
t-butyl 2-methyl-5-benzylcarbonyloxyamino-6-oxo-1,6-dihydro-1-pyrimidinylacetate
t-Butyl 2-Methyl-5-benzyloxycarbonylamino-6-oxo-1,6-dihydro-1-pyrimidinylacetate
2-methyl-5-benzylsulfonylamino-6-oxo-1 6-dihydro-1-pyrimidinylacetic acid