描述了开发一系列具有良好药物样特性的高促动素选择性脾酪氨酸激酶(Syk)抑制剂。通过X射线晶体学分析,以及对选定化学空间内核心的系统调查(以配体结合效率为重点),发现了早期的铅。通过调节包括log D,PSA和p K a在内的物理化学性质来指导初始化学型中固有的hERG离子通道活性的减弱。PSA被证明对预期的化合物设计最有效。使用TA97a沙门氏菌的Ames试验进一步分析了先进化合物的细菌致突变性菌株,随后的研究表明,这种诱变性在整个系列中普遍存在。插入的鉴定是核心支架诱变启用修饰的可能机制。将DNA结合测定作为DNA的预筛选和模型,可以解决诱变风险,为分子提供了有利的效价,选择性,药代动力学和脱靶特性。
The present invention provide a heterocyclic compound having a HDAC inhibitory action, and useful for the treatment of autoimmune diseases and/or inflammatory diseases, graft versus host disease, cancers, central nervous diseases including neurodegenerative diseases, Charcot-Marie-Tooth disease and the like, and a pharmaceutical composition comprising the compound.
The present invention relates to a compound represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof.
The object of the present invention is to provide a compound and a pharmaceutical composition having excellent Syk inhibitory activity. According to the present invention, a nicotinamide derivative represented by the following formula (I) or a salt thereof is provided,
wherein
R
1
is a substituent represented by the following formula (II-1), (III-1), or (IV-1)
(wherein R
3
, R
4
, R
5
, n, and X
1
have the same definitions as those described in the specification), and R
2
is a pyridyl, indazolyl, phenyl, pyrazolopyridyl, benzisoxazolyl, pyrimidinyl, or quinolyl group, each of which optionally has at least one substituent.
Identification of a novel series of azabenzimidazole-derived inhibitors of spleen tyrosine kinase
作者:Sameer P. Kawatkar、Bernard Barlaam、Paul Kemmitt、Iain Simpson、David Watson、Peng Wang、Scott Lamont、Qibin Su、Scott Boiko、Timothy Ikeda、Joe Patel、Andy Pike、Hannah Pollard、Jon Read、Ujjal Sarkar、Haiyun Wang、Quanshan Wen、Zhiyuan Yan、James E. Dowling、Hannah Dry、Scott D. Edmondson
DOI:10.1016/j.bmcl.2020.127393
日期:2020.9
azabenzimidazole (ABI) series of SYK inhibitors by mining activity data of 86,000 compounds from legacy biochemical assays with SYK and other homologous kinases as target enzymes. A structure-based design and hybridization approach was then used to improve the potency and kinase selectivity of the hits. Lead compound 23 from this novel ABI series has a SYK IC50 = 0.21 nM in a biochemical assay and inhibits growth
Hybridisation of amino-pyrimidine based SYK inhibitors (e.g. 1a) with previously reported diamine-based SYK inhibitors (e.g. TAK-659) led to the identification and optimisation of a novel pyrimidine-based series of potent and selective SYK inhibitors, where the original aminomethylene group was replaced by a 3,4-diaminotetrahydropyran group. The initial compound 5 achieved excellent SYK potency. However
POLYCYCLIC-CARBAMOYLPYRIDONE COMPOUNDS AND THEIR PHARMACEUTICAL USE
申请人:Gilead Sciences, Inc.
公开号:US20160176870A1
公开(公告)日:2016-06-23
Compounds for use in the treatment of human immunodeficiency virus (HIV) infection are disclosed. The compounds have the following Formula (Ia):
including stereoisomers and pharmaceutically acceptable salts thereof, wherein A′, R
1
, R
2
and R
3
are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.