Jm. Fevig et al., DESIGN AND SYNTHESIS OF RING-CONSTRAINED BOROPEPTIDE THROMBIN INHIBITORS, Bioorganic & medicinal chemistry letters, 6(3), 1996, pp. 295-300
Ring-constrained boropeptide thrombin inhibitors were designed using i
nformation from the X-ray crystal structure of 1 (3-Phenylpropionyl-Pr
o-borolys-OH . HCl) bound to thrombin. The constraints utilized cycloh
exane and pyrrolidine rings to preorganize an aromatic ring in an orie
ntation allowing optimum edge-to-face interaction with the tryptophan
215 side chain located in the S3 specificity pocket of thrombin.