N,N‘-Bisbenzylidenebenzene-1,4-diamines and N,N‘-Bisbenzylidenenaphthalene-1,4-diamines as Sirtuin Type 2 (SIRT2) Inhibitors
摘要:
A series of N,N'-bisbenzylidenebenzene-1,4-diamine and N,N'-bisbenzylidenenaphthalene-1,4-diamine derivatives were synthesized as inhibitors for human sirtuin type 2 (SIRT2). The design of the new compounds was based on two earlier reported hits from molecular modeling and virtual screening. The most potent compound was N,N'-bis(2-hydroxybenzylidene)benzene-1,4-diamine, which was equipotent with the most potent hit compound and well-known SIRT2 inhibitor sirtinol.
Synthesis, characterization and biological activity of some platinum(II) complexes with Schiff bases derived from salicylaldehyde, 2-furaldehyde and phenylenediamine
作者:Akmal S. Gaballa、Mohsen S. Asker、Atiat S. Barakat、Said M. Teleb
DOI:10.1016/j.saa.2006.06.031
日期:2007.5
complexes of Schiffbasesderivedfromsalicylaldehyde and 2-furaldehyde with o- and p-phenylenediamine were reported and characterized based on their elemental analyses, IR and UV-vis spectroscopy and thermal analyses (TGA). The complexes were found to have the general formula [Pt(L)(H(2)O)(2)]Cl(2) x nH(2)O (where n=0 for complexes 1, 3, 4; n=1 for complex 2. The data obtained show that Schiffbases were
据报道,由水杨醛和2-呋喃甲醛制得的席夫碱与邻苯二胺和对苯二胺形成了四种铂(II)配合物,并根据其元素分析,红外和紫外可见光谱以及热分析(TGA)进行了表征。发现该配合物具有通式[Pt(L)(H(2)O)(2)] Cl(2)x nH(2)O(其中配合物1,3,4为n = 0; n = 1对于络合物2。获得的数据表明,席夫碱与中性形式的Pt(II)离子作为双齿配体相互作用,氧而不是氮是最可能的配位点,具有两个配位水的正方形平面几何结构提出了用于所有配合物的分子筛选自由配体及其金属配合物对以下细菌的抗菌活性:大肠杆菌,枯草芽孢杆菌,铜绿假单胞菌,金黄色葡萄球菌; 真菌黑曲霉,真菌 和酵母白念珠菌,酿酒酵母。活性数据表明,铂(II)配合物比针对一种或多种微生物的母体席夫碱配体更有效。
Li<sup>+</sup>-Induced fluorescent metallogel: a case of ESIPT-CHEF and ICT phenomenon
作者:Manish Kumar Dixit、Mrigendra Dubey
DOI:10.1039/c8cp04579h
日期:——
The metallogel obtained from 1/Li+ reveals a fibrous morphology while 1 with other, bigger size, alkali metal ions like Na+/K+/Cs+ demonstrates the growth of crystals with different shapes. The effect of the size of the alkali metal ion over gel formation is well explored by FTIR, UV-vis, fluorescence, average lifetime measurements, SEM and PXRD. The metallogel shows multi-stimuli responsive behaviour
荧光金属盐(1%w / v)是由非荧光成分即合成的。在氯仿和甲醇的混合物中,尽可能最小的低分子量芳族对称配体H 2 SA(1)和LiOH。Li的螯合+不仅负责激发态分子内质子转移(ESIPT)或荧光的通过螯合增强荧光(CHEF)在原点的抑制1,也为聚集导致凝胶化。从所获得的metallogel 1 /锂+揭示了纤维形态而1与其他较大尺寸,碱金属离子如Na + / K +/ Cs +演示了具有不同形状的晶体的生长。FTIR,UV-vis,荧光,平均寿命测量,SEM和PXRD很好地探讨了碱金属离子的大小对凝胶形成的影响。Metallogel显示出对热应力和机械应力以及再溶胀特性的多刺激响应行为。由于存在分子内电荷转移(ICT),区域异构体H 2 PBA(2)在用LiOH处理后也显示出发射,这通过各种实验已得到很好的证实。FTIR很好地确定了凝胶形成的机理,11 H NMR,UV-vis,荧光,
Tunable Color of Aggregation-Induced Emission Enhancement in a Family of Hydrogen-Bonded Azines and Schiff Bases
作者:Samuel Guieu、Francisco Cardona、João Rocha、Artur M. S. Silva
DOI:10.1002/chem.201802581
日期:2018.11.22
A simple synthesis strategy afforded a family of hydrogen‐bonded azines and Schiff‐bases. Although in dilute solution these dyes are faint light emitters, all exhibit bright luminescence upon aggregation. Changing the peripheral substituents from electron donating to electron withdrawing allows emission fine‐tuning in a range from bluish‐green to orange‐red. The crystal structures of the materials
Salicylaldimine‐bridged dinuclear cyclopalladated complexes were synthesized by the reactions of cyclopalladated chloro dimers [Pd(4‐R)C6H3CH=N‐C6H3–2,6‐i‐Pr2}(μ‐Cl)]2 (R = H; OMe) with salen‐based bridging ligands. The complexes were characterized by FTIR, NMR spectroscopy, elemental analysis and X‐ray crystallography. The binding interaction of cyclopalladated complexes to bovine serum albumin (BSA)
Stannous chloride catalyzed synthesis of Schiff bases from hydroxybenzaldehydes and determination of their antioxidant activity by ABTS and DPPH assay
作者:Gyanashree Bora、Dipankoj Gogoi、Subhasmita Saikia、Archana Pareek、Jyotirekha G Handique
DOI:10.1007/s12039-019-1645-2
日期:2019.8
prevent harmful diseases caused by free radicals. In the present work, we have synthesized some Schiff bases by the reaction of different hydroxybenzaldehydes and primary aromatic diamines using StannousChloride (\(\hbox SnCl}_2}\cdot }2\hbox H}_2}\hbox O}\)) as the catalyst. The products were characterized by FT-IR spectroscopy, GCMS and NMR spectroscopy. Furthermore, the antioxidant activity of