吡啶融合的环三氮杂二磺酰胺 (CADA) 化合物的合成和抗 HIV 和人类分化簇 4 (CD4) 下调效力
摘要:
CADA 化合物选择性地下调人类细胞表面 CD4 蛋白,并作为 HIV 进入抑制剂和哮喘、类风湿性关节炎、糖尿病和某些癌症的药物受到关注。假设将带有疏水性取代基的吡啶环融合到 CADA 化合物的大环支架中可能会产生具有改进性能的有效化合物,合成了 17 个大环,14 个具有具有异丁烯头基团、两个芳烃磺酰基侧臂和稠合吡啶的 12 元环带有对位取代基的环。这些类似物显示出广泛的 CD4 下调和抗 HIV 效力,其中一些效力高于 CADA,证明效力不需要 12 元环中的强碱性氮原子,并且疏水取代基增强了抗 HIV 的效力吡啶稠合的 CADA 化合物。
吡啶融合的环三氮杂二磺酰胺 (CADA) 化合物的合成和抗 HIV 和人类分化簇 4 (CD4) 下调效力
摘要:
CADA 化合物选择性地下调人类细胞表面 CD4 蛋白,并作为 HIV 进入抑制剂和哮喘、类风湿性关节炎、糖尿病和某些癌症的药物受到关注。假设将带有疏水性取代基的吡啶环融合到 CADA 化合物的大环支架中可能会产生具有改进性能的有效化合物,合成了 17 个大环,14 个具有具有异丁烯头基团、两个芳烃磺酰基侧臂和稠合吡啶的 12 元环带有对位取代基的环。这些类似物显示出广泛的 CD4 下调和抗 HIV 效力,其中一些效力高于 CADA,证明效力不需要 12 元环中的强碱性氮原子,并且疏水取代基增强了抗 HIV 的效力吡啶稠合的 CADA 化合物。
Metal Ion Mediated Instant <i>Z</i> → <i>E</i> Isomerization of Azobenzene Macrocycles in the Absence of Light
作者:Munshi Sahid Hossain、Subhajit Bandyopadhyay
DOI:10.1021/acs.joc.1c00105
日期:2021.5.7
classical photoswitch azobenzenes reversibly interconvert between the E- and the Z-isomers with light. Here, we report a pair of new macrocyclic azobenzenes characterized thoroughly by spectroscopic methods and single crystal X-ray diffraction structures, and one of the compounds displays a quantitative conversion of the E- to the Z-form. These compounds, besides their normal photoswitchingbehavior, display
A simple competition assay to probe pentacopper(I)-thiolato cluster ligand exchange
作者:Yi-Hsun Chen、Troy T.Y. Lin、Hsuan-Ying Chen、Chai-Lin Kao、Hsing-Yin Chen、Sodio C.N. Hsu、James R. Carey、Michael Y. Chiang
DOI:10.1016/j.jinorgbio.2012.11.008
日期:2013.3
Two pentanuclear copper(I) thiolato clusters of the formula [Cu5(L)3]− (L = pyridine-2,6-dimethanethiolate (L1), (1); 4-methylpyridine-2,6-dimethanethiolate (L2), (2)) were synthesized utilizing a single-step procedure, and their structures were characterized by X-ray crystallography. The aforementioned pentanuclearcomplexes possess an interesting propeller-like Cu5S6 core where all Cu centers are
分子式为[Cu 5(L)3 ] -的两个五核铜(I)硫醇铜簇-(L =吡啶-2,6-二甲硫醇盐(L1),(1); 4-甲基吡啶-2,6-二甲硫醇盐(L2) ,(2))是通过一步法合成的,其结构通过X射线晶体学表征。前述五核配合物具有令人感兴趣的螺旋桨状的Cu 5 S 6。所有Cu中心均为三坐标的核心。电喷雾电离质谱(ESI-MS)研究的五核铜(I)硫醇基团与添加的杂配体表明有趣的配体交换行为。由配体交换产生的产物分布不仅取决于添加的配体的量,而且对配体的配位能力敏感。本研究中使用的ESI-MS方法可作为探测配位金属配合物中交换行为的有用工具,而这些配位金属配合物是无法通过NMR确定的。
Syntheses, properties, and photoelectron spectra of substituted and layered [2.2](2,6)pyridinoparacyclophanes
作者:I. D. Reingold、W. Schmidt、V. Boekelheide
DOI:10.1021/ja00502a031
日期:1979.4
Bis-styrylpyridine and bis-styrylbenzene derivatives as inhibitors for Aβ fibril formation
作者:Seong Rim Byeon、Ji Hoon Lee、Ji-Hoon Sohn、Dong Chan Kim、Kye Jung Shin、Kyung Ho Yoo、Inhee Mook-Jung、Won Koo Lee、Dong Jin Kim
DOI:10.1016/j.bmcl.2006.10.090
日期:2007.3
New bis-styrylpyridine and bis-styrylbenzene derivatives were designed and synthesized. These 34 compounds were evaluated by A beta fibril formation inhibitory assay using thioflavin T as a dye (named ThT assay). Most of them showed excellent inhibitory activities for A beta fibril formation at IC50 of 0.1-2.7 mu M which is comparable to curcumin (IC50 of 0.8 mu M). Among them, nine compounds were screened for their cytotoxicities on HT-22 cell by MTT assay at 1, 10, and 50 mu M. In particular, 1-7 and II-2 exhibited the best combination of inhibitory activity and compound cytotoxicity. (c) 2006 Elsevier Ltd. All rights reserved.