Cycloalkanediamine derivatives as novel blood coagulation factor Xa inhibitors.
Nagata, T., Yoshino, T., Haginoya, N., Yoshikawa, K., Isobe, Y., Furugohri, T., Kanno, H.(2007) Bioorg Med Chem Lett 17: 4683-4688
- PubMed: 17555959 
- DOI: https://doi.org/10.1016/j.bmcl.2007.05.068
- Primary Citation of Related Structures:  
2EI6 - PubMed Abstract: 
This paper describes the synthesis of orally available potent fXa inhibitors 2 and 3 by modification of the piperazine part of lead compound 1. Carbonyl derivative 3 showed potent fXa activity but not sulfonyl derivative 2. Among the compounds synthesized, cyclohexane derivatives 3g and 3h and cycloheptane derivative 3j had potent anticoagulant activity as well as anti-fXa activity. Synthetic study of the optical isomers of 3g demonstrated that (-)-3g had more potent activity.
Organizational Affiliation: 
Medicinal Chemistry Research Laboratory, Daiichi Pharmaceutical Co., Ltd, 1-16-13, Kita-Kasai, Edogawa-ku, Tokyo 134-8630, Japan. nagatso1@daiichipharm.co.jp