5EXL

FACTOR XIA IN COMPLEX WITH THE INHIBITOR 4-(aminomethyl)-~{N}-[(1~{S})-1-[4-(3-oxidanyl-1~{H}-indazol-5-yl)pyridin-2-yl]-2-phenyl-ethyl]cyclohexane-1-carboxamide

Summary for 5EXL

• Entry DOI: 10.2210/pdb5exl/pdb
• Descriptor: Coagulation factor XIa light chain, 4-(aminomethyl)-~{N}-[(1~{S})-1-[4-(3-oxidanyl-1~{H}-indazol-5-yl)pyridin-2-yl]-2-phenyl-ethyl]cyclohexane-1-carboxamide, SULFATE ION, ... (5 entities in total)
• Functional Keywords: hydrolase, serine protease, blood coagulation factor, protein inhibitor complex, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor
• Biological source: Homo sapiens (Human)
• Cellular location: Secreted: P03951
• Total number of polymer chains: 1
• Total formula weight: 28696.52

Authors

Wei, A. (deposition date: 2015-11-23, release date: 2016-04-13, Last modification date: 2024-10-16)

Primary citation

Corte, J.R.,Fang, T.,Pinto, D.J.P.,Orwat, M.J.,Han, W.,Rendina, A.R.,Luettgen, J.M.,Rossi, K.A.,Wei, A.,Ramamurthy, V.,Myers Jr., J.E.,Sheriff, S.,Narayanan, R.,Harper, T.,Zheng, J.J.,Li, Y.-X.,Seiffert, D.A.,Wexler, R.R.,Quan, M.L.
Orally bioavailable pyridine and pyrimidine-based Factor XIa inhibitors: Discovery of the methyl N-phenyl carbamate P2 prime group
Bioorg.Med.Chem., 24:2257-2272, 2016

PubMed Abstract: Pyridine-based Factor XIa (FXIa) inhibitor (S)-2 was optimized by modifying the P2 prime, P1, and scaffold regions. This work resulted in the discovery of the methyl N-phenyl carbamate P2 prime group which maintained FXIa activity, reduced the number of H-bond donors, and improved the physicochemical properties compared to the amino indazole P2 prime moiety. Compound (S)-17 was identified as a potent and selective FXIa inhibitor that was orally bioavailable. Replacement of the basic cyclohexyl methyl amine P1 in (S)-17 with the neutral p-chlorophenyltetrazole P1 resulted in the discovery of (S)-24 which showed a significant improvement in oral bioavailability compared to the previously reported imidazole (S)-23. Additional improvements in FXIa binding affinity, while maintaining oral bioavailability, was achieved by replacing the pyridine scaffold with either a regioisomeric pyridine or pyrimidine ring system.

PubMed: 27073051
DOI: 10.1016/j.bmc.2016.03.062

Experimental method

X-RAY DIFFRACTION (2.3 Å)