一氧化氮 (NO) 是免疫、血管和神经系统的重要信号分子,被发现以不同浓度存在于血液和血浆等生物体液以及神经组织和内皮细胞中。可能需要各种有能力的探针来检测 NO 并了解其复杂的生物化学性质,并建立其在不同生物介质中的浓度与其生物效应的相关性。为了寻找新的探针作为 NO 传感器,四个喹啉衍生的邻合成了β-二胺,并通过包括单晶X射线衍射在内的各种光谱方法确认了它们的结构和纯度。研究了分子对 NO 的双峰传感(紫外-可见和荧光)潜力。由于相应的三唑的形成,所有的探针都显示了对 NO 存在的紫外可见和荧光信号。有趣的是,使用比色信号在纳摩尔范围内(56.1-95 nM)观察到四种配体的检测限。在制备的分子中,N 4 -(4-chlorobenzyl)quinoline-3,4-diamine 表现出优异的传感参数,即检测限 (LOD)、形成常数 (K f ) 和猝灭常数 (K sv)。分离的三唑进一步证实了所提出的
一氧化氮 (NO) 是免疫、血管和神经系统的重要信号分子,被发现以不同浓度存在于血液和血浆等生物体液以及神经组织和内皮细胞中。可能需要各种有能力的探针来检测 NO 并了解其复杂的生物化学性质,并建立其在不同生物介质中的浓度与其生物效应的相关性。为了寻找新的探针作为 NO 传感器,四个喹啉衍生的邻合成了β-二胺,并通过包括单晶X射线衍射在内的各种光谱方法确认了它们的结构和纯度。研究了分子对 NO 的双峰传感(紫外-可见和荧光)潜力。由于相应的三唑的形成,所有的探针都显示了对 NO 存在的紫外可见和荧光信号。有趣的是,使用比色信号在纳摩尔范围内(56.1-95 nM)观察到四种配体的检测限。在制备的分子中,N 4 -(4-chlorobenzyl)quinoline-3,4-diamine 表现出优异的传感参数,即检测限 (LOD)、形成常数 (K f ) 和猝灭常数 (K sv)。分离的三唑进一步证实了所提出的
[EN] TLR7 AND TLR8 AGONISTS FOR THE TREATMENT OF CANCER AND/OR INFECTIOUS DISEASES<br/>[FR] AGONISTES TLR7 ET TLR8 POUR LE TRAITEMENT DU CANCER ET/OU DE MALADIES INFECTIEUSES
申请人:UNIV NEW YORK STATE RES FOUND
公开号:WO2022187809A1
公开(公告)日:2022-09-09
Disclosed herein are compounds of the Formula (I) or (II) or (III): Also disclosed are methods for stimulating an immune response, inducing an anti-tumor immune response, and treating an infectious disease in a subject by administering a therapeutically effective amount of a compound disclosed herein. Also disclosed are methods of treating a tumor or abnormal cell proliferation by administering a therapeutically effective amount of a compound disclosed herein under conditions effective to treat a tumor or abnormal cell proliferation.
Preliminary evaluation of a 3H imidazoquinoline library as dual TLR7/TLR8 antagonists
作者:Nikunj M. Shukla、Subbalakshmi S. Malladi、Victor Day、Sunil A. David
DOI:10.1016/j.bmc.2011.04.052
日期:2011.6
Toll-like receptors (TLR) -7 and -8 are thought to play an important role in immune activation processes underlying the pathophysiology of HIV and several clinically important autoimmune diseases. Based on our earlier findings of TLR7-antagonistic activity in a 3H imidazoquinoline, we sought to examine a pilot library of 3H imidazoquinolines for dual TLR7/8 antagonists, since they remain a poorly explored chemotype. 2D-NOE experiments were employed to unequivocally characterize the compounds. A quinolinium compound 12, bearing p-methoxybenzyl substituents on N3 and N5 positions was identified as a lead. Compound 12 was found to inhibit both TLR7 and TLR8 at low micromolar concentrations. Our preliminary results suggest that alkylation with electron-rich substituents on the quinoline N5, or conversely, elimination of the fixed charge of the resultant quaternary amine on the quinolinium may yield more active compounds. (C) 2011 Elsevier Ltd. All rights reserved.