- 4-Aminoarylguanidine and 4-aminobenzamidine derivatives as potent and selective urokinase-type plasminogen activator inhibitors. Spencer, J.R., McGee, D., Allen, D., Katz, B.A., Luong, C., Sendzik, M., Squires, N., Mackman, R.L. Bioorg. Med. Chem. Lett. (2002)