1 ZA3 Trihydroxy-[[(2-nitrophenyl)carbonylamino]methyl]boron 1.000 2 ZA2 [(2-chlorophenyl)carbonylamino]methyl-trihydroxy-boron 0.778 3 ZA4 [(2-fluorophenyl)carbonylamino]methyl-trihydroxy-boron 0.778 4 ZA5 [(2,6-difluorophenyl)carbonylamino]methyl-trihydroxy-boron 0.737 5 BH6 {[(2-chlorobenzoyl)amino]methyl}boronic acid 0.722 6 E06 [(1r)-1-[(2,6-difluorophenyl)carbonylamino]ethyl]-trihydroxy-boron 0.700 7 EO9 [(1s)-1-[(2,6-difluorophenyl)carbonylamino]ethyl]-trihydroxy-boron 0.700