GtoPdb Ligand ID: 5706

Synonyms: R 406 | R-406 | R406 free base
Compound class: Synthetic organic
Comment: Tamatinib (R406) is a potent ATP-competitive (Type I) Syk inhibitor. It is the active form of the prodrug fostamatinib.
2D Structure
Click here for structure editor
Physico-chemical Properties
Hydrogen bond acceptors 7
Hydrogen bond donors 3
Rotatable bonds 7
Topological polar surface area 128.75
Molecular weight 470.17
XLogP 2.72
No. Lipinski's rules broken 0
Canonical SMILES COc1cc(Nc2ncc(c(n2)Nc2ccc3c(n2)NC(=O)C(O3)(C)C)F)cc(c1OC)OC
Isomeric SMILES COc1cc(Nc2ncc(c(n2)Nc2ccc3c(n2)NC(=O)C(O3)(C)C)F)cc(c1OC)OC
InChI InChI=1S/C22H23FN6O5/c1-22(2)20(30)28-19-13(34-22)6-7-16(27-19)26-18-12(23)10-24-21(29-18)25-11-8-14(31-3)17(33-5)15(9-11)32-4/h6-10H,1-5H3,(H3,24,25,26,27,28,29,30)
No information available.
Summary of Clinical Use
Tamatinib is a potential drug for treatment of the inflammation associated with and causing bronchial asthma resulting from allergen-induced airway hyperresponsiveness (AHR). The compound may have beneficial effects in additional inflammatory conditions, such as rheumatoid arthritis and other autoimmune conditions.
Mechanism Of Action and Pharmacodynamic Effects
Tamatinib is a potent ATP-competitive inhibitor of spleen tyrosine kinase (SYK). SYK plays an essential role in the signal-transduction cascade which leads to mast cell degranulation and cytokine release in inflammatory bronchial asthma [1]. Tamatinib can reduce the pathological results of airway hyperresponsiveness (AHR).