2YIX

Triazolopyridine Inhibitors of p38


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Design and Synthesis of Inhaled P38 Inhibitors for the Treatment of Chronic Obstructive Pulmonary Disease.

Millan, D.S.Bunnage, M.E.Burrows, J.L.Butcher, K.J.Dodd, P.G.Evans, T.J.Fairman, D.A.Hughes, S.J.Kilty, I.C.Lemaitre, A.Lewthwaite, R.A.Mahnke, A.Mathias, J.P.Philip, J.Smith, R.T.Stefaniak, M.H.Yeadon, M.Phillips, C.

(2011) J.Med.Chem. 54: 7797

  • DOI: 10.1021/jm200677b
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • This paper describes the identification and optimization of a novel series of DFG-out binding p38 inhibitors as inhaled agents for the treatment of chronic obstructive pulmonary disease. Structure based drug design and "inhalation by design" principl ...

    This paper describes the identification and optimization of a novel series of DFG-out binding p38 inhibitors as inhaled agents for the treatment of chronic obstructive pulmonary disease. Structure based drug design and "inhalation by design" principles have been applied to the optimization of the lead series exemplied by compound 1a. Analogues have been designed to be potent and selective for p38, with an emphasis on slow enzyme dissociation kinetics to deliver prolonged lung p38 inhibition. Pharmacokinetic properties were tuned with high intrinsic clearance and low oral bioavailability in mind, to minimize systemic exposure and reduce systemically driven adverse events. High CYP mediated clearance and glucuronidation were targeted to achieve high intrinsic clearance coupled with multiple routes of clearance to minimize drug-drug interactions. Furthermore, pharmaceutical properties such as stability, crystallinity, and solubility were considered to ensure compatibility with a dry powder inhaler. 1ab (PF-03715455) was subsequently identified as a clinical candidate from this series with efficacy and safety profiles confirming its potential as an inhaled agent for the treatment of COPD.


    Organizational Affiliation

    Worldwide Medicinal Chemistry, Pfizer Global Research and Development , Sandwich Laboratories, Ramsgate Road, Sandwich, Kent, CT13 9NJ, U.K. david.millan@gmail.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MITOGEN-ACTIVATED PROTEIN KINASE 14
A
351Homo sapiensMutation(s): 0 
Gene Names: MAPK14 (CSBP, CSBP1, CSBP2, CSPB1, MXI2, SAPK2A)
EC: 2.7.11.24
Find proteins for Q16539 (Homo sapiens)
Go to Gene View: MAPK14
Go to UniProtKB:  Q16539
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
YIX
Query on YIX

Download SDF File 
Download CCD File 
A
1-ethyl-3-(2-{[3-(1-methylethyl)[1,2,4]triazolo[4,3-a]pyridin-6-yl]sulfanyl}benzyl)urea
CE-159167
C19 H23 N5 O S
PHHKWHBPRKFKKF-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
YIXKd: 3.3 nM (100) BINDINGDB
YIXKd: 3.3 nM BINDINGMOAD
YIXKd: 3.3 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.944α = 90.00
b = 86.523β = 90.00
c = 122.580γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2011-11-30
    Type: Initial release