Potent inhibition of thrombin by the newly synthesized arginine derivative no. 805. The importance of stereo-struc-ture of its hydrophobic carboxamide portion - Okamoto, S; Hijikata, A; Kikumoto, R; Tonomara, S; Hara, H; Ninomiya, K; Maruyama, A; Sugano, M; Tamao, Y (Biochem Biophys Res Commun, 1981)