4-Aminoquinoline-ferrocenyl-chalcone conjugates: Synthesis and anti-plasmodial evaluation
作者:Amandeep Singh、Jiri Gut、Philip J. Rosenthal、Vipan Kumar
DOI:10.1016/j.ejmech.2016.09.044
日期:2017.1
cone conjugates has been synthesized and evaluated for anti-plasmodial activity. The conjugates with flexible aliphatic (aminoethanol or aminopropanol) substituents on the quinoline ring showed better anti-plasmodial activities compared to those with cyclic (piperazine or aminophenol) substituents. The conjugate 17j was the most potent and non-cytotoxic, with an IC50 value of 0.37 μM against the c
合成了一系列脂族和芳族取代的1 H -1,2,3-三唑键合的4-氨基-喹啉-二茂铁基查耳酮共轭物,并评估了其抗疟原虫活性。与具有环状(哌嗪或氨基苯酚)取代基的共轭物相比,在喹啉环上具有柔性脂族(氨基乙醇或氨基丙醇)取代基的共轭物表现出更好的抗疟原虫活性。缀合物17j最有效且无细胞毒性,对恶性疟原虫的耐氯喹W2菌株的IC 50值为0.37μM 。
Efficacy of novel phenoxyalkyl pyridinium oximes as brain-penetrating reactivators of cholinesterase inhibited by surrogates of sarin and VX
作者:Janice E. Chambers、Howard W. Chambers、Kristen E. Funck、Edward C. Meek、Ronald B. Pringle、Matthew K. Ross
DOI:10.1016/j.cbi.2016.07.004
日期:2016.11
behavior with several of the more effective novel oximes, but not 2-PAM. Therefore these novel oximes have demonstrated an ability to reactivate inhibited ChE in brain preparations from two species and in vivo data support their ability to enter the brain and provide a therapeutic action. These novel oximes have the potential to be developed into improved antidotes for nerve agent therapy.
Design, synthesis, and anti-proliferative evaluation of 1<i>H</i>-1,2,3-triazole grafted tetrahydro-β-carboline-chalcone/ferrocenylchalcone conjugates in estrogen responsive and triple negative breast cancer cells
A series of 1H-1,2,3 triazole grafted tetrahydro-β-carboline-chalcone/ferrocenylchalcone conjugates were synthesized and in vitroevaluated against estrogen responsive (MCF-7) and triplenegative (MDA-MB-231) breastcancer cells. Comparative analysis revealed the improvement of selectivity towards the estrogen responsive cells with the inclusion of a ferrocene core. The most potent compounds of the
合成了一系列1 H -1,2,3三唑接枝的四氢-β-咔啉-查耳酮/二茂铁基查耳酮共轭物,并在体外评估了其对雌激素反应性(MCF-7)和三阴性(MDA-MB-231)乳腺癌细胞的作用。对比分析显示,通过加入二茂铁核心,提高了对雌激素反应性细胞的选择性。该系列中最有效的化合物为13l(R = 4-F,n = 3),对MCF-7的IC 50值为10.33μM,比标准药物他莫昔芬的效力高约5倍,而13d( R = 2,3,4-三甲氧基,n = 5)的IC 50MDA-MB-231细胞的最大抗药性值为21.99μM,比他莫昔芬的效价高约3倍。ERα配体结合域中的分子对接研究进一步支持了实验结果,并且更大的结合亲和力归因于能量上有利的拟合以及ERα活性位点中疏水和亲水相互作用之间的平衡。
Structural modifications and in vitro pharmacological evaluation of 4-pyridyl-piperazine derivatives as an active and selective histamine H3 receptor ligands
meta analogues. Interestingly, benzophenone derivative 18 showed the highest affinity among all tested compounds (hH3R Ki = 3.12 nM). The likely protein-ligand interactions, responsible for their high affinity were demonstrated using molecular modeling techniques. Furthermore, selectivity, intrinsic activity at H3R, as well as drug-like properties of selected ligands were evaluated using in vitro methods
具有变化的烷基接头长度和东部取代基的一系列新的4-吡啶基哌嗪衍生物被证明是在纳摩尔浓度范围内有效的组胺H 3受体(hH 3 R)配体。在关注其烷基连接基长度的同时,具有六个亚甲基连接基的衍生物往往比其五个亚甲基同系物更有效。此外,就苯氧基乙酰基和苯氧基丙酰基衍生物而言,八个亚甲基连接基的活性均低于其七个亚甲基同系物。然而,在对烷基接头长度影响的收集数据的整体分析中,三个亚甲基同系物似乎是最高的hH 3。到目前为止,我们小组中所有已描述的4-吡啶基哌嗪衍生物之间的R亲和力。就联苯和二苯甲酮衍生物而言,具有对位取代的第二芳族环的化合物比其间类似物具有更高的亲和力。有趣的是,二苯甲酮衍生物18在所有测试的化合物中显示出最高的亲和力(hH 3 R K i = 3.12 nM)。使用分子建模技术证明了造成其高亲和力的可能的蛋白质-配体相互作用。此外,使用体外方法评估了选择性,在H 3 R上的固有活性以及所选配体的类药物特性。
Design, synthesis and biological evaluation of rasagiline-clorgyline hybrids as novel dual inhibitors of monoamine oxidase-B and amyloid-β aggregation against Alzheimer’s disease
(IC50 = 4 nM) and selectivity (SI > 25000) compared to the reference selectiveinhibitorrasagiline (IC50 = 141 nM, SI > 355), and exhibited good inhibitory activity against Aβ1-42 aggregation (40.78%, 25 μM). Kinetic and molecular modeling studies revealed that 6j was a competitive reversible inhibitor for hMAO-B. Moreover, compound 6j displayed low toxicity and good neuroprotective effects in SH-SY5Y