3HC8

Investigation of Aminopyridiopyrazinones as PDE5 Inhibitors: Evaluation of Modifications to the Central Ring System.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Investigation of aminopyridiopyrazinones as PDE5 inhibitors: Evaluation of modifications to the central ring system.

Hughes, R.O.Walker, J.K.Cubbage, J.W.Fobian, Y.M.Rogier, D.J.Heasley, S.E.Blevis-Bal, R.M.Benson, A.G.Owen, D.R.Jacobsen, E.J.Freskos, J.N.Molyneaux, J.M.Brown, D.L.Stallings, W.C.Acker, B.A.Maddux, T.M.Tollefson, M.B.Williams, J.M.Moon, J.B.Mischke, B.V.Rumsey, J.M.Zheng, Y.Macinnes, A.Bond, B.R.Yu, Y.

(2009) Bioorg.Med.Chem.Lett. --: --

  • DOI: 10.1016/j.bmcl.2009.06.004

  • PubMed Abstract: 
  • Efforts to improve the potency and physical properties of the aminopyridiopyrazinone class of PDE5 inhibitors through modification of the core ring system are described. Five new ring systems are evaluated and features that impart improved potency an ...

    Efforts to improve the potency and physical properties of the aminopyridiopyrazinone class of PDE5 inhibitors through modification of the core ring system are described. Five new ring systems are evaluated and features that impart improved potency and improved solubility are delineated.


    Organizational Affiliation

    Pfizer Global Research and Development, Chesterfield Parkway West, St. Louis, MO 63017, USA. robert.o.hughes@pfizer.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cGMP-specific 3',5'-cyclic phosphodiesterase,cAMP-specific 3',5'-cyclic phosphodiesterase 4A
A
324Homo sapiensMutation(s): 0 
Gene Names: PDE4A (DPDE2), PDE5A (PDE5)
EC: 3.1.4.53 3.1.4.35
Find proteins for P27815 (Homo sapiens)
Go to Gene View: PDE4A
Go to UniProtKB:  P27815
Find proteins for O76074 (Homo sapiens)
Go to Gene View: PDE5A
Go to UniProtKB:  O76074
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
PD4
Query on PD4

Download SDF File 
Download CCD File 
A
6-(6-methoxypyridin-3-yl)-2-[(2-morpholin-4-ylethyl)amino]-4-(2-propoxyethyl)pyrido[2,3-b]pyrazin-3(4H)-one
C24 H32 N6 O4
KSAKYDGQTISGJC-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PD4IC50: 2.4 - 2.9 nM (94) BINDINGDB
PD4IC50: 2.9 nM BINDINGMOAD
PD4IC50: 2.9 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.196 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 54.691α = 90.00
b = 77.085β = 101.93
c = 77.514γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-06-21
    Type: Advisory, Database references, Source and taxonomy, Structure summary
  • Version 1.3: 2017-11-01
    Type: Refinement description
  • Version 1.4: 2018-01-24
    Type: Structure summary