I+/--(Aminomethylene)-I(2)-oxobenzenepropanenitrile

3-[9H-Fluoren-9-ylmethoxycarbonyl-[1-[(2-methylpropan-2-yl)oxycarbonyl]piperidin-4-yl]amino]cyclobutane-1-carboxylic acid

(1s,3s)-3-[(4-{[(tert-butoxy)carbonyl]amino}cyclohexyl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]cyclobutane-1-carboxylic acid

3-[9H-Fluoren-9-ylmethoxycarbonyl-[1-[(2-methylpropan-2-yl)oxycarbonyl]azetidin-3-yl]amino]cyclobutane-1-carboxylic acid

5-[[9H-Fluoren-9-ylmethoxycarbonyl-[(1R,2R)-2-[(2-methylpropan-2-yl)oxycarbonylamino]cyclohexyl]amino]methyl]furan-3-carboxylic acid

4-[[9H-Fluoren-9-ylmethoxycarbonyl-[(1R,2R)-2-[(2-methylpropan-2-yl)oxycarbonylamino]cyclohexyl]amino]methyl]-1H-pyrrole-2-carboxylic acid

5-[[9H-Fluoren-9-ylmethoxycarbonyl-[(3R,4R)-4-methoxy-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidin-3-yl]amino]methyl]thiophene-3-carboxylic acid

1-[[9H-Fluoren-9-ylmethoxycarbonyl-[3-[(2-methylpropan-2-yl)oxycarbonylamino]cyclobutyl]amino]methyl]cyclopropane-1-carboxylic acid

(1s,3s)-3-[(3-{[(tert-butoxy)carbonyl]amino}cyclobutyl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]cyclobutane-1-carboxylic acid

1-({[4-({[(tert-butoxy)carbonyl]amino}methyl)cyclohexyl]({[(9H-fluoren-9-yl)methoxy]carbonyl})amino}methyl)cyclopropane-1-carboxylic acid

5-[({1-[(tert-butoxy)carbonyl]azepan-4-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)methyl]-3-methylfuran-2-carboxylic acid