AD is a progressive brain disorder. Because of the lack of remarkable single-target drugs against neurodegenerative disorders, the multitarget-directed ligand strategy has received attention as a promising therapeutic approach. Herein, we rationally designed twenty-nine hybrids of N-propargylamine-hydroxypyridinone. The designed hybrids possessed excellent iron-chelating activity (pFe3+ = 17.09–22.02)
AD是一种进行性脑部疾病。由于缺乏针对神经退行性疾病的显着单靶点药物,多靶点导向配体策略作为一种有前途的治疗方法受到了关注。在此,我们合理设计了N-炔丙胺-羟基吡啶酮的 29 个杂化物。设计的杂种具有优异的铁螯合活性(pFe 3+ = 17.09–22.02)和有效的单胺氧化酶 B 抑制作用。对最佳化合物6b的各种生物学评价逐步进行,包括单胺氧化酶的抑制筛选(h MAO-B IC 50 = 0.083 ± 0.001 µM,h MAO-A IC 50 = 6.11 ± 0.08 µM;SI = 73.5),血脑屏障通透性预测和小鼠行为研究。所有这些有利的结果证明,N-炔丙基胺-羟基吡啶酮支架是发现用于 AD 治疗的多靶向配体的有前途的结构。
HDAC1/MAO-B dual inhibitors against Alzheimer’s disease: Design, synthesis and biological evaluation of N-propargylamine-hydroxamic acid/o-aminobenzamide hybrids
N-propargylamine-hydroxamic acid/o-aminobenzamide hybridsinhibitors combining the typical pharmacophores of hydroxamic acid/o-aminobenzamide and propargylamine were designed and synthesized as HDAC1/MAO-B dual inhibitors for the treatment of Alzheimer’s disease. Most of the hybrids displayed moderate to good MAO-B inhibitory activities. Among them, Hybrid If exhibited the most potent activity against MAO-B and HDAC1
20‐tetra(4‐pyridyl)porphyrin (TPyP‐H2) ligands to afford a robust 2D metal–organic framework (Ag27‐MOF). This silver cluster‐assembled material serves as a highly efficient heterogeneous catalyst for the cyclization of both terminal and internal propargylamines with CO2 under atmospheric pressure. Density functional theory (DFT) calculations illustrate that the high catalytic activity and broad substrate
Non-Noble-Metal Metal–Organic-Framework-Catalyzed Carboxylative Cyclization of Propargylic Amines with Atmospheric Carbon Dioxide under Ambient Conditions
clusters was synthesized and applied to this reaction. Compound 1 displays excellent solvent stability. Importantly, 1, acting as heterogeneous catalyst, can highly catalyze the cyclization of propargylicamines with CO2 under atmospheric pressure at room temperature, which can be recycled at least five times without an obvious decrease of the catalytic activity. NMR spectroscopy, coupled with 13C-isotope-
炔丙胺与二氧化碳(CO 2 )偶联反应合成2-恶唑烷酮是工业生产中的重要反应,但往往需要苛刻的反应条件和贵金属催化剂才能实现高产率。在此,合成了一种由镁和铜簇组装的新型无贵金属三维骨架[Mg 3 Cu 2 I 2 (IN) 4 (HCOO) 2 (DEF) 4 ] n ( 1 ),并将其应用于这种反应。化合物1显示出优异的溶剂稳定性。重要的是,1作为多相催化剂,在常压、常压、室温条件下,可以高度催化炔丙胺与CO 2的环化反应,可循环使用至少5次,催化活性没有明显下降。核磁共振谱,结合13 C-同位素和氘标记实验,清楚地阐明了该催化体系的机理:CO 2被成功捕获并转化为 2-恶唑烷酮的产物,炔丙胺的 C≡C 键可以1有效激活,质子转移参与反应过程。进一步进行密度泛函理论计算以揭示反应路径和化合物1的关键作用 在反应过程中。