2R2M

2-(2-Chloro-6-Fluorophenyl)Acetamides as Potent Thrombin Inhibitors

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.168 

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Literature

2-(2-Chloro-6-Fluorophenyl)Acetamides as Potent Thrombin Inhibitors

Lee, L., Kreutter, K.D., Pan, W., Crysler, C., Spurlino, J., Player, M.R., Tomczuk, B., Lu, T.

(2007) Bioorg Med Chem Lett 17: 6266-6269

  • DOI: 10.1016/j.bmcl.2007.09.013
  • Primary Citation of Related Structures:  
    2R2M

  • PubMed Abstract: 

    • 2-(2-Chloro-6-fluorophenyl)acetamides having 2,2-difluoro-2-aryl/heteroaryl-ethylamine P3 and oxyguanidine P1 substituents are potent thrombin inhibitors (K(i)=0.9-33.9 nM). 2-(5-Chloro-pyridin-2-yl)-2,2-difluoroethylamine was the best P3 substituent, yielding the most potent inhibitor (K(i)=0 ...

    2-(2-Chloro-6-fluorophenyl)acetamides having 2,2-difluoro-2-aryl/heteroaryl-ethylamine P3 and oxyguanidine P1 substituents are potent thrombin inhibitors (K(i)=0.9-33.9 nM). 2-(5-Chloro-pyridin-2-yl)-2,2-difluoroethylamine was the best P3 substituent, yielding the most potent inhibitor (K(i)=0.7 nM). Replacing the P3 heteroaryl group with a phenyl ring or replacing the difluoro substitution with dimethyl or cyclopropyl groups in the linker reduced the affinity for thrombin significantly. The aminopyridine P1s also provided an increase in potency.

    Organizational Affiliation: 

    Drug Discovery, Johnson & Johnson, Pharmaceutical Research and Development, Spring House, PA, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thrombin light chainA26Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
UniProt & NIH Common Fund Data Resources
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
PHAROS:  P00734
GTEx:  ENSG00000180210 
Entity Groups  
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UniProt GroupP00734
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Thrombin heavy chainB259Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
UniProt & NIH Common Fund Data Resources
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
PHAROS:  P00734
GTEx:  ENSG00000180210 
Entity Groups  
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UniProt GroupP00734
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Hirudin-3AC [auth H]11Hirudo medicinalisMutation(s): 0 
UniProt
Find proteins for P09945 (Hirudo medicinalis)
Explore P09945 
Go to UniProtKB:  P09945
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UniProt GroupP09945
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
I50
Query on I50
Download Ideal Coordinates CCD File 
D [auth B]N-[2-({[amino(imino)methyl]amino}oxy)ethyl]-2-{6-chloro-3-[(2,2-difluoro-2-phenylethyl)amino]-2-fluorophenyl}acetamide
C19 H21 Cl F3 N5 O2
DZEJHPMTDNDECN-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
I50 PDBBind:  2R2M Ki: 47.1 (nM) from 1 assay(s)
Binding MOAD:  2R2M Ki: 47.1 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.168 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.95α = 90
b = 72.135β = 100.64
c = 72.85γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2007-08-27 
  • Released Date: 2008-08-26 
    • Deposition Author(s): Spurlino, J.

Revision History  (Full details and data files)

  • Version 1.0: 2008-08-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance