Experimental Data Snapshot
(2005) J Med Chem 48: 1610-1619
A series of derivatives of 2-anilino-5-phenyloxazole (5) has been identified as inhibitors of VEGFR2 kinase. Herein we describe the structure-activity relationship (SAR) of this novel template. Optimization of both aryl rings led to very potent inhibitors at both the enzymatic and cellular levels. Oxazole 39 had excellent solubility and good oral PK when dosed as the bis-mesylate salt and demonstrated moderate in vivo efficacy against HT29 human colon tumor xenografts. X-ray crystallography confirmed the proposed binding mode, and comparison of oxazoles 39 and 46 revealed interesting differences in orientation of 2-pyridyl and 3-pyridyl rings, respectively, attached at the meta position of the 5-phenyl ring.
 Explore in 3D: Structure |Sequence Annotations |Electron Density |Validation Report |Ligand Interaction (AAX)
Biological assembly 1 assigned by authors.
Macromolecule Content 
Entity ID: 1 | |||||
|---|---|---|---|---|---|
| Molecule | Chains | Sequence Length | Organism | Details | Image |
| Vascular endothelial growth factor receptor 2 | 366 | Homo sapiens | Mutation(s): 0  Gene Names: KDR, FLK1 EC: 2.7.1.112 (PDB Primary Data), 2.7.10.1 (UniProt) | ![]() | |
UniProt & NIH Common Fund Data Resources | |||||
Find proteins for P35968 (Homo sapiens) Explore P35968  Go to UniProtKB:  P35968 | |||||
PHAROS:  P35968 GTEx:  ENSG00000128052  | |||||
Entity Groups  | |||||
| Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
| UniProt Group | P35968 | ||||
Sequence AnnotationsExpand | |||||
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| Ligands 1 Unique | |||||
|---|---|---|---|---|---|
| ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
| AAX Query on AAX Download Ideal Coordinates CCD File  | B [auth A] | N-(CYCLOPROPYLMETHYL)-4-(METHYLOXY)-3-({5-[3-(3-PYRIDINYL)PHENYL]-1,3-OXAZOL-2-YL}AMINO)BENZENESULFONAMIDE C25 H24 N4 O4 S KRGKAARWVPUWSY-UHFFFAOYSA-N | |||
| Length ( Å ) | Angle ( ˚ ) |
|---|---|
| a = 37.544 | α = 90 |
| b = 94.333 | β = 90 |
| c = 96.767 | γ = 90 |
| Software Name | Purpose |
|---|---|
| REFMAC | refinement |
| MAR345 | data collection |
| SCALEPACK | data scaling |
| AMoRE | phasing |
RCSB PDB Core Operations are funded by theU.S. National Science Foundation (DBI-2321666), theUS Department of Energy (DE-SC0019749), and theNational Cancer Institute,National Institute of Allergy and Infectious Diseases, andNational Institute of General Medical Sciences of theNational Institutes of Health under grant R01GM157729.