Synthesis and Biological Evaluation of Pyrazolo[1,5-a]pyrimidine Compounds as Potent and Selective Pim-1 Inhibitors
摘要:
Pim-1 has emerged as an attractive target for developing therapeutic agents for treating disorders involving abnormal cell growth, especially cancers. Herein we present lead optimization, chemical synthesis and biological evaluation of pyrazolo[1,5-a]pyrimidine compounds as potent and selective inhibitors of Pim-1 starting from a hit from virtual screening. These pyrazolo[1,5-a]pyrimidine compounds strongly inhibited Pim-1 and Flt-3 kinases. Selected compounds suppressed both the phosphorylation of BAD protein in a cell-based assay and 2-dimensional colony formation in a clonogenic cell survival assay at submicromolar potency, suggesting that cellular activity was mediated through inhibition of Pim-1. Moreover, these Pim-1 inhibitors did not show significant hERG inhibition at 30 mu M concentration. The lead compound proved to be highly selective against a panel of 119 oncogenic kinases, indicating it had an improved safety profile compared with the first generation Pim-1 inhibitor SGI-1776.
Substituted imidazo[1,2-b]pyridazines as protein kinase inhibitors
申请人:Xu Yong
公开号:US09416132B2
公开(公告)日:2016-08-16
The present invention provides protein kinase having one of the following structures (I), (II) or (III): or a stereoisomer, prodrug, tautomer or pharmaceutically acceptable salt thereof, wherein R, R1, R2 and X are as defined herein. Compositions and methods for using the same in the treatment of cancer, autoimmune, inflammatory and other Pim kinase-associated conditions are also disclosed.
[EN] HETEROCYCLIC PROTEIN KINASE INHIBITORS<br/>[FR] INHIBITEURS DE PROTÉINE KINASE HÉTÉROCYCLIQUES
申请人:TOLERO PHARMACEUTICALS INC
公开号:WO2013013188A1
公开(公告)日:2013-01-24
The present invention provides protein kinase having one of the following structures (I), (II) or (III): or a stereoisomer, prodrug, tautomer or pharmaceutically acceptable salt thereof, wherein R, R1, R2 and X are as defined herein. Compositions and methods for using the same in the treatment of cancer, autoimmune, inflammatory and other Pim kinase-associated conditions are also disclosed.
IMIDAZO[1,2-B]PYRIDAZINE AND PYRAZOLO[1,5-A]PYRIMIDINE DERIVATIVES AND THEIR USE AS PROTEIN KINASE INHIBITORS
申请人:Xu Yong
公开号:US20120058997A1
公开(公告)日:2012-03-08
The present invention provides protein kinase inhibitors comprising imidazo[1,2-b]pyridazine and pyrazolo[1,5-a]pyrimidine compounds of the following structure (I) and (II):
or a stereoisomer, prodrug or pharmaceutically acceptable salt thereof, wherein R, R
1
, R
2
and X are as defined herein. Compositions and methods for using the same in the treatment of cancer and other Pim kinase-associated conditions are also disclosed.
The present invention provides protein kinase having one of the following structures (I), (II) or (III): or a stereoisomer, prodrug, tautomer or pharmaceutically acceptable salt thereof, wherein R, R
1
, R
2
and X are as defined herein. Compositions and methods for using the same in the treatment of cancer, autoimmune, inflammatory and other Pim kinase-associated conditions are also disclosed.
Synthesis and Biological Evaluation of Pyrazolo[1,5-<i>a</i>]pyrimidine Compounds as Potent and Selective Pim-1 Inhibitors
作者:Yong Xu、Benjamin G. Brenning、Steven G. Kultgen、Jason M. Foulks、Adrianne Clifford、Shuping Lai、Ashley Chan、Shannon Merx、Michael V. McCullar、Steven B. Kanner、Koc-Kan Ho
DOI:10.1021/ml500300c
日期:2015.1.8
Pim-1 has emerged as an attractive target for developing therapeutic agents for treating disorders involving abnormal cell growth, especially cancers. Herein we present lead optimization, chemical synthesis and biological evaluation of pyrazolo[1,5-a]pyrimidine compounds as potent and selective inhibitors of Pim-1 starting from a hit from virtual screening. These pyrazolo[1,5-a]pyrimidine compounds strongly inhibited Pim-1 and Flt-3 kinases. Selected compounds suppressed both the phosphorylation of BAD protein in a cell-based assay and 2-dimensional colony formation in a clonogenic cell survival assay at submicromolar potency, suggesting that cellular activity was mediated through inhibition of Pim-1. Moreover, these Pim-1 inhibitors did not show significant hERG inhibition at 30 mu M concentration. The lead compound proved to be highly selective against a panel of 119 oncogenic kinases, indicating it had an improved safety profile compared with the first generation Pim-1 inhibitor SGI-1776.