Cation-Pi Interactions at the Active Site of Factor Xa: Dramatic Enhancement Upon Stepwise N-Alkylation of Ammonium Ions.
Salonen, L.M., Bucher, C., Banner, D.W., Haap, W., Mary, J.L., Benz, J., Kuster, O., Seiler, P., Schweizer, W.B., Diederich, F.(2009) Angew.Chem.Int.Ed.Engl. 48: 811
- PubMed: 19101972 
- DOI: 10.1002/anie.200804695