725237-22-9

Upstream product

• 536-90-3 m-Anisidine 
• 33097-13-1 4,6-dichloro-2-(methylthio)-5-pyrimidinecarbonitrile 

Downstream Products

• 1374157-90-0 (R)-2-(5-cyano-4-(4-methoxybenzyloxy)-6-(3-(methoxy)phenylamino)pyrimidin-2-ylamino)butanamide 
• 725237-37-6 C₁₃H₁₃N₅OS 

Relevant academic research and scientific papers

OXYPYRIMIDINES AS SYK MODULATORS

The present invention is directed to compounds of formula (I) and tautomers thereof or pharmaceutically acceptable salts, esters, and prodrugs thereof which arc inhibitor of Syk kinase. The present invention is also directed to intermediates used in making such compounds, the preparation of such a compound, pharmaceutical compositions containing such a compound, methods of inhibition Syk kinase activity, methods of inhibition the platelet aggregation, and methods to prevent or treat a number of conditions mediated at least in part by Syk kinase activity, such as undesired thrombosis and Non Hodgkin's Lymphoma.

Structure-activity relationship studies of imidazo[1,2-c]pyrimidine derivatives as potent and orally effective Syk family kinases inhibitors

Spleen tyrosine kinase (Syk) and zeta-associated protein kinase of 70 kDa (ZAP-70) are members of the Syk family and non-receptor-type protein tyrosine kinases, which play crucial roles in B- and T-cell activation. Therefore, a Syk family tyrosine kinases inhibitor would be a useful therapeutic agent for the treatment of various allergic disorders and autoimmune diseases. Previously, we reported that 1,2,4-triazolo[4,3-c]pyrimidine derivative 1 and 1,2,4-triazolo[1,5-c]pyrimidine derivative 2 showed strong inhibitory activities against Syk family kinases. These compounds also exhibited high-level suppression of IL-2 in cellular assays. However, their oral efficacies were poor in a mouse model of IL-2 production. To improve oral effectiveness, we investigated a new series of Syk family kinases inhibitors. We found that imidazo[1,2-c]pyrimidine derivatives potently inhibited the Syk family kinases. Among these agents, compound 9f not only showed strong inhibitory activities against Syk and ZAP-70 kinases in vitro, but its oral administration resulted in the in vivo suppression of both the passive cutaneous anaphylaxis reaction and Concanavalin A-induced IL-2 production in a mouse model.