1 9TG 3-[(2r)-2-borono-2-{[(thiophen-2-yl)acetyl]amino}ethyl]benzoic acid 1.000 2 BJP (1r)-2-phenylacetamido-2-(3-carboxyphenyl)ethyl boronic acid 0.880 3 2UL 3-[(2r)-2-{[(2r)-2-amino-2-phenylacetyl]amino}-2-(dihydroxyboranyl)ethyl]benzoic acid 0.846 4 BJI 1(R)-1-acetamido-2-(3-carboxyphenyl)ethyl boronic acid 0.783 5 BJH 1(R)-1-acetamido-2-(3-carboxy-2-hydroxyphenyl)ethyl boronic acid 0.750