malononitriles/methylcianoor ethylciano acetates in a onepot reaction catalyzed by silica sodium carbonate nanoparticles (SSC NPs) is described. In this reaction, SSC NPs demonstrated high efficiency as catalyst to obtain target products. By this achievement, a wide range of α,β-unsaturated compounds as Knoevenagel condensation products with good to excellent yields are obtained from reaction between numerous
Novel 2-Arylbenzimidazole derivatives as multi-targeting agents to treat Alzheimer’s disease
作者:Oya Unsal-Tan、Keriman Ozadali-Sari、Beyza Ayazgok、Tuba Tüylü Küçükkılınç、Ayla Balkan
DOI:10.1007/s00044-017-1874-1
日期:2017.7
describes the synthesis, pharmacological evaluation, including acetylcholinesterase (AChE)/butyrylcholinesterase (BChE) inhibition, amyloid beta (Aβ) antiaggregation, and neuroprotective effects, as well as molecular modeling of novel2-(4-substituted phenyl)-1H-benzimidazolederivatives. These derivatives were synthesized by cyclization of o-phenylenediamines with sodium hydroxy(4-substituted phenyl)methanesulfonate
这项研究描述了合成,药理学评估,包括乙酰胆碱酯酶(AChE)/丁酰胆碱酯酶(BChE)抑制,β淀粉样蛋白(Aβ)抗聚集和神经保护作用,以及新型2-(4-取代苯基)-1 H的分子模型-苯并咪唑衍生物。这些衍生物是通过将邻苯二胺与羟基(4-取代的苯基)甲磺酸钠盐环合而合成的。体外研究表明,大多数目标化合物对BChE表现出显着的抑制活性(IC 50:13.60–95.44 µM)。其中3d和3g-i对具有IC 50的BChE也表现出高选择性(SI≥35.7)值分别为39.56、13.60、14.45和15.15 µM。根据分子模型研究,可以假定这些化合物能够到达BChE的催化位点,但不能到达AChE的催化位点。随后检查了具有BChE抑制作用的化合物的Aβ抗聚集和神经保护活性。在这些化合物中,3d抑制了Aβ1–40的聚集,并表现出了对H 2 O 2诱导的和Aβ1–40诱导的细胞死亡的显着神经保护作
Synthesis and Anticandidal Activity of New Imidazole-Chalcones
In the present work, 15 new 1-(4-(1H-imidazol-1-yl)phenyl)-3-(4-substituedphenyl)prop-2-en-1-one derivatives (3a−3o) were synthesized to evaluate their antifungal activity. Structures of newly synthesized imidazole derivatives (3a−3o) were characterized by IR, ¹H-NMR, 13C-NMR, and LCMSMS spectroscopic methods. The anticandidal activity of compounds (3a−3o) against C. albicans (ATCC 24433), C. krusei
of arylidene ethylcyanoacetate derivatives in the presence of catalytic amounts of molybdenum oxide nanoparticles (MoO₃ NPs) under green conditions at ambient temperature. From the reaction, a wide range of novel arylidene ethylcyanoacetates was successfully synthesized with high yields from the Knoevenagel condensation reaction between various aryl aldehydes and ethylcyanoacetate in the presence
Synthesis, molecular docking, and biological evaluation of novel 2-pyrazoline derivatives as multifunctional agents for the treatment of Alzheimer's disease
A novel series of 2-pyrazoline derivatives were designed, synthesized, and evaluated for cholinesterase (ChE) inhibitory, Aβ anti-aggregating and neuroprotective activities. Among these, 3d, 3e, 3g, and 3h were established as the most potent and selective BChE inhibitors (IC50 = 0.5-3.9 μM), while 3f presented dual inhibitory activity against BChE and AChE (IC50 = 6.0 and 6.5 μM, respectively). Kinetic