Potent, non-covalent reversible BTK inhibitors with 8-amino-imidazo[1,5-a]pyrazine core featuring 3-position bicyclic ring substitutes.Liu, J., Guiadeen, D., Krikorian, A., Gao, X., Wang, J., Babu Boga, S., Alhassan, A.B., Yu, W., Selyutin, O., Yu, Y., Anand, R., Xu, J., Kelly, J., Duffy, J.L., Liu, S., Yang, C., Wu, H., Cai, J., Bennett, C., Maloney, K.M., Tyagarajan, S., Gao, Y.D., Fischmann, T.O., Presland, J., Mansueto, M., Xu, Z., Leccese, E., Zhang-Hoover, J., Knemeyer, I., Garlisi, C.G., Stivers, P., Brandish, P.E., Hicks, A., Kim, R., Kozlowski, J.A.
(2020) Bioorg Med Chem Lett 30: 127390-127390
- PubMed: 32738973
- DOI: https://doi.org/10.1016/j.bmcl.2020.127390
- Primary Citation of Related Structures:
6X3N, 6X3O, 6X3P
- PubMed Abstract:
Bruton's tyrosine kinase (BTK) is a Tec family kinase with a well-defined role in the B cell receptor (BCR) pathway. It has become an attractive kinase target for selective B cell inhibition, and for the treatment of B cell related diseases. Many BTK inhibitors have been discovered for the treatment of cancer and rheumatoid arthritis, including a series of BTK inhibitors based on 8-amino-imidazo[1,5-a]pyrazine we recently reported. The X-ray crystal structures of BTK with inhibitors were also published, which provided great help for the SAR design. Here we report our SAR work introducing ring constraints for the 3-position piperidine amides on the BTK inhibitors based on 8-amino-imidazo[1,5-a]pyrazine. This modification improved the potency in BTK inhibitions, as well as the PK profile and the off-target selectivity. The dose-dependent efficacy of two BTK inhibitors was observed in the rat collagen induced arthritis (CIA) model.
WuXi AppTec Co. Ltd, 288 FuTe Zhong Road, No. 1 Building, WaiGaoQiao Free Trade Zone, Shanghai 200131, PR China.