Discovery of novel N-(5-(arylcarbonyl)thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl)amides as potent RORγt inhibitors
摘要:
Novel series of N-(5-(arylcarbonyl) thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl) amides were discovered as potent retinoic acid receptor-related orphan receptor-gamma-t (ROR gamma t) inhibitors. SAR studies of the ROR gamma t HTS hit 6a led to identification of thiazole ketone amide 8h and thiophene ketone amide 9g with high binding affinity and inhibitory activity of Th17 cell differentiation. Compound 8h showed in vivo efficacy in both mouse experimental autoimmune encephalomyelitis (EAE) and collagen induced arthritis (CIA) models via oral administration. (C) 2013 Elsevier Ltd. All rights reserved.
2-Aminothiophene-3-carboxylates bearing various aryl groups at the 4-position are readily obtained in good to moderate yields by the one-pot Gewald reaction of arylalkylketones with ethyl cyanoacetate and elemental sulfur in the presence of morpholinium acetate and excess morpholine.
Synthesis and structure–activity relationships of 2-amino-3-carboxy-4-phenylthiophenes as novel atypical protein kinase C inhibitors
作者:Paul M. Titchenell、H.D. Hollis Showalter、Jean-François Pons、Alistair J. Barber、Yafei Jin、David A. Antonetti
DOI:10.1016/j.bmcl.2013.03.019
日期:2013.5
Recent evidence suggests atypical protein kinase C (aPKC) isoforms are required for both TNF- and VEGF-induced breakdown of the blood-retinal barrier (BRB) and endothelial permeability to 70 kDa dextran or albumin. A chemical library screen revealed a series of novel small molecule phenylthiophene based inhibitors of aPKC isoforms that effectively block permeability in cell culture and in vivo. In an effort to further elucidate the structural requirements of this series of inhibitors, we detail in this study a structure-activity relationship (SAR) built on screening hit 1, which expands on our initial pharmacophore model. The biological activity of our analogues was evaluated in models of bona fide aPKC-dependent signaling including NF kappa B driven-gene transcription as a marker for an inflammatory response and VEGF/TNF-induced vascular endothelial permeability. The EC50 for the most efficacious inhibitors (6, 32) was in the low nanomolar range in these two cellular assays. Our study demonstrates the key structural elements that confer inhibitory activity and highlights the requirement for electron-donating moieties off the C-4 aryl moiety of the 2-amino-3-carboxy-4-phenylthiophene backbone. These studies suggest that this class has potential for further development into small molecule aPKC inhibitors with therapeutic efficacy in a host of diseases involving increased vascular permeability and inflammation. (C) 2013 Elsevier Ltd. All rights reserved.
US7915267B2
申请人:——
公开号:US7915267B2
公开(公告)日:2011-03-29
Discovery of novel N-(5-(arylcarbonyl)thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl)amides as potent RORγt inhibitors
作者:Yonghui Wang、Wei Cai、Guifeng Zhang、Ting Yang、Qian Liu、Yaobang Cheng、Ling Zhou、Yingli Ma、Ziqiang Cheng、Sijie Lu、Yong-Gang Zhao、Wei Zhang、Zhijun Xiang、Shuai Wang、Liuqing Yang、Qianqian Wu、Lisa A. Orband-Miller、Yan Xu、Jing Zhang、Ruina Gao、Melanie Huxdorf、Jia-Ning Xiang、Zhong Zhong、John D. Elliott、Stewart Leung、Xichen Lin
DOI:10.1016/j.bmc.2013.12.021
日期:2014.1
Novel series of N-(5-(arylcarbonyl) thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl) amides were discovered as potent retinoic acid receptor-related orphan receptor-gamma-t (ROR gamma t) inhibitors. SAR studies of the ROR gamma t HTS hit 6a led to identification of thiazole ketone amide 8h and thiophene ketone amide 9g with high binding affinity and inhibitory activity of Th17 cell differentiation. Compound 8h showed in vivo efficacy in both mouse experimental autoimmune encephalomyelitis (EAE) and collagen induced arthritis (CIA) models via oral administration. (C) 2013 Elsevier Ltd. All rights reserved.