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| Product Name: | R406 | | Synonyms: | 6-[[5-Fluoro-2-[(3,4,5-trimethoxyphenyl)amino]-4-pyrimidinyl]amino]-2,2-dimethyl-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one benzenesulfonate;Tamatinib;CS-735;R406(benzenesulfonate);6-(5-fluoro-2-(3,4,5-trimethoxyphenylamino)pyrimidin-4-ylamino)-2,2-dimethyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one benzenesulfonate;R406, >=98%;R406 tosilate;6-[[5-Fluoro-2-[(3,4,5-trimethoxyphenyl)amino]-4-pyrimidinyl]amino]-2,2-dimethyl-2H-pyrido[3,2 | | CAS: | 841290-81-1 | | MF: | C28H29FN6O8S | | MW: | 628.6286632 | | EINECS: | | Product Categories: | Inhibitors | | Mol File: | 841290-81-1.mol |
| solubility | ≥31.45 mg/mL in DMSO; insoluble in H2O; ≥14.95 mg/mL in EtOH with ultrasonic | | form | solid |
| Uses | R406 is a potent Syk inhibitor which affects Dectin-1-mediated signalling in mammilian cells. R406 thus acts an anti-fungal agent. Also a potential anti-leukemia agent, through modulation of sphingosine-1 phosphate receptor 1 (S1PR1). | | Biological Activity | r406 is a potent syk inhibitorspleen tyrosine kinase (syk) is a non-receptor tyrosine kinase mainly expressed in hematopoietic cells. it transmits signals from a variety of cell surface receptors including cd74, fc receptor and integrins. it is crucial for adaptive immune response, and also very important for cellular adhesion, innate immune recognition, osteoclast maturation, platelet activation and vascular development. [1]functional abnormality of syk has been implicated in several blood malignancies. constitutively active syk can transform b cells. syk inhibition can be beneficial for patients with blood cancers and autoimmune diseases.r406 is a potent inhibitor of ige and igg mediated fc receptor activation with ec50 for degranulation of 56-64 nm. [2] r406 targets syk and inhibits phosphorylation of syk substrates by binding to its atp binding pocket and competing with atp. r406 strongly inhibits syk kinase activity with an ic50 of 41 nm.r406 induces apoptosis in diffuse large b-cell lymphoma cell lines. it blocks b cell receptor signaling through inhibiton of syk autophosphorylation of y525/y526 and syk-dependent phosphorylation of the b-cell linker protein. [3]r406 can be administrated orally. | | references | [1]mocsai a, ruland j, tybulewicz vl. the syk tyrosine kinase: a crucial player in diverse biological functions. nat rev immunol 2010. 10(6): 387-402.[2]braselmann s, taylor v, zhao h, et al. r406, an orally available spleen tyrosine kinase inhibitor blocks fc receptor signaling and reduces immune complex-mediated inflammation. j pharmacol exp ther 2006. 319(3): 998-1008.[3]chen l, monti s, juszczynski p, et al. syk-dependent tonic b-cell receptor signaling is a rational treatment target in diffuse large b-cell lymphoma. blood 2008. 111(4): 2230*2237. |
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