3O51

Crystal structure of anthranilamide 10 bound to AuroraA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.288 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of a potent, selective, and orally bioavailable pyridinyl-pyrimidine phthalazine aurora kinase inhibitor.

Cee, V.J.Schenkel, L.B.Hodous, B.L.Deak, H.L.Nguyen, H.N.Olivieri, P.R.Romero, K.Bak, A.Be, X.Bellon, S.Bush, T.L.Cheng, A.C.Chung, G.Coats, S.Eden, P.M.Hanestad, K.Gallant, P.L.Gu, Y.Huang, X.Kendall, R.L.Lin, M.H.Morrison, M.J.Patel, V.F.Radinsky, R.Rose, P.E.Ross, S.Sun, J.R.Tang, J.Zhao, H.Payton, M.Geuns-Meyer, S.D.

(2010) J Med Chem 53: 6368-6377

  • DOI: 10.1021/jm100394y
  • Primary Citation of Related Structures:  
    3O51, 3O50

  • PubMed Abstract: 
  • The discovery of aurora kinases as essential regulators of cell division has led to intense interest in identifying small molecule aurora kinase inhibitors for the potential treatment of cancer. A high-throughput screening effort identified pyridinyl-pyrimidine 6a as a moderately potent dual inhibitor of aurora kinases -A and -B ...

    The discovery of aurora kinases as essential regulators of cell division has led to intense interest in identifying small molecule aurora kinase inhibitors for the potential treatment of cancer. A high-throughput screening effort identified pyridinyl-pyrimidine 6a as a moderately potent dual inhibitor of aurora kinases -A and -B. Optimization of this hit resulted in an anthranilamide lead (6j) that possessed improved enzyme and cellular activity and exhibited a high level of kinase selectivity. However, this anthranilamide and subsequent analogues suffered from a lack of oral bioavailability. Converting the internally hydrogen-bonded six-membered pseudo-ring of the anthranilamide to a phthalazine (8a-b) led to a dramatic improvement in oral bioavailability (38-61%F) while maintaining the potency and selectivity characteristics of the anthranilamide series. In a COLO 205 tumor pharmacodynamic assay measuring phosphorylation of the aurora-B substrate histone H3 at serine 10 (p-histone H3), oral administration of 8b at 50 mg/kg demonstrated significant reduction in tumor p-histone H3 for at least 6 h.


    Organizational Affiliation

    Department of Medicinal Chemistry, Amgen Inc., 360 Binney Street, Cambridge, Massachusetts 02142 and Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, USA. vcee@amgen.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cDNA FLJ58295, highly similar to Serine/threonine-protein kinase 6A267Homo sapiensMutation(s): 0 
Gene Names: AURKAAIKAIRK1ARK1AURAAYK1BTAKIAK1STK15STK6
EC: 2.7.11.1
Find proteins for O14965 (Homo sapiens)
Explore O14965 
Go to UniProtKB:  O14965
NIH Common Fund Data Resources
PHAROS:  O14965
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LJF
Query on LJF

Download Ideal Coordinates CCD File 
B [auth A]N-[4-({3-[5-fluoro-2-(methylideneamino)pyrimidin-4-yl]pyridin-2-yl}oxy)phenyl]-2-(phenylamino)benzamide
C29 H21 F N6 O2
VGOJUQQDRYARLG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.288 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.658α = 90
b = 86.658β = 90
c = 76.753γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2010-07-27 
  • Released Date: 2010-08-18 
  • Deposition Author(s): Huang, X.

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance