Selective, Catalytic, and Metal-Free Coupling of Electron-Rich Phenols and Anilides Using Molecular Oxygen as Terminal Oxidant
作者:Luis Bering、Melina Vogt、Felix M. Paulussen、Andrey P. Antonchick
DOI:10.1021/acs.orglett.8b01631
日期:2018.7.6
Selective oxidative homo- and cross-coupling of electron-rich phenols and anilides was developed using nitrosonium tetrafluoroborate as a catalyst. Oxidative coupling of phenols revealed unusual selectivities, which translated into the unprecedented synthesis of inverse Pummerer-type ketones. Mechanistic studies suggest that oxidative coupling of phenols and anilides shares a common pathway via homolytical
Design, synthesis of novel (Z)-2-(3-(4-((3-benzyl-2,4-dioxothiazolidin-5-ylidene)methyl)-1-phenyl-1H-pyrazol-3-yl)phenoxy)-N-arylacetamide derivatives: Evaluation of cytotoxic activity and molecular docking studies
作者:Prashanth Kumar Kolluri、Nirmala Gurrapu、N.J.P. Subhashini、Shravani Putta、Surya Sathyanarayana Singh、Tamalapakula Vani、Vijjulatha Manga
DOI:10.1016/j.molstruc.2019.127300
日期:2020.2
the screened derivatives demonstrated moderate to promising cytotoxicactivity. Some of the derivatives, particularly compound 11d and 11n have shown promising cytotoxicactivity with IC50 values 0.604 μM and 0.665 μM compared to standard drug cisplatin and compounds 11a, 11e and 11g also have shown considerable cytotoxicactivity and the rest of the derivatives have shown moderate activity. Furthermore
1,3-Dipropyl-8-(1-phenylacetamide-1H-pyrazol-3-yl)-xanthine derivatives as highly potent and selective human A2B adenosine receptor antagonists
作者:Mojgan Aghazadeh Tabrizi、Pier Giovanni Baraldi、Delia Preti、Romeo Romagnoli、Giulia Saponaro、Stefania Baraldi、Allan R. Moorman、Abdel Naser Zaid、Katia Varani、Pier Andrea Borea
DOI:10.1016/j.bmc.2007.11.058
日期:2008.3
their binding affinities for the human A(2B), A(1), A(2A), and A(3) adenosine receptors. N-(4-chloro-phenyl)-2-[3-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl )-5-methyl-pyrazol-1-yl] (11c) showed a high affinity for the human A(2B) adenosine receptor K(i)=7nM and good selectivity (A(1), A(2A), A(3)/A(2B)>140). Synthesis and SAR of this novel class of compounds is presented herein.
Design, Synthesis and Biological Evaluation of Hydroxamic Acid Derivatives as Potential High Density Lipoprotein (HDL) Receptor CLA-1 Up-Regulating Agents
作者:Xiaofang Chen、Li Wang、Yu Du、Yanbin Wu、Xiaojian Jia、Yuan Yang、Bin Hong
DOI:10.3390/molecules16119178
日期:——
Trichostatin A (TSA) and suberoylanilide hydroxamic acid (SAHA) were reported in our recent publication as novel human high density lipoprotein (HDL) receptor CD36 and Lysosomal integral membrane protein-II Analogous-1 (CLA-1) up-regulators. As part of a broader effort to more fully explore the structure-activity relationships (SAR) of CLA-1 up-regulators, we synthesized a series of hydroxamic acid derivatives and evaluated their CLA-1 up-regulating activities in HepG2 cells. Some compounds exhibited over 10-fold up-regulation of CLA-1 expression in HepG2 cells at 10 μg/mL concentration. The compound 1g showed the best potency, with a lower EC50 than TSA (EC50 = 0.32 μM versus 1.2 μM). These compounds provide early new CLA-1 up-regulators with potential for treating atherosclerosis.
Identification and Characterization of Inhibitors of Bacterial Enoyl-Acyl Carrier Protein Reductase
作者:Losee L. Ling、Jun Xian、Syed Ali、Bolin Geng、Jun Fan、Debra M. Mills、Anthony C. Arvanites、Hernan Orgueira、Mark A. Ashwell、Gilles Carmel、Yibin Xiang、Donald T. Moir
DOI:10.1128/aac.48.5.1541-1547.2004
日期:2004.5
eightfold MIC shift). Synthesis of a variety of compounds in this chemical series revealed a correlation between IC(50) and MIC, and the results provided initial structure-activityrelationships. Preliminary structure-activityrelationships, potency on purified ENR, and activity on bacterial cells indicate that members of the thiopyridine chemical series are effective fattyacidbiosynthesis inhibitors suitable
细菌烯酰酰基载体蛋白还原酶(ENR)催化脂肪酸生物合成中必不可少的步骤。ENR是窄谱抗菌药物发现的有吸引力的目标,因为它在新陈代谢中起着重要作用,并在许多细菌物种中具有序列保守性。另外,细菌ENR序列和结构组织与哺乳动物脂肪酸生物合成酶明显不同。高通量筛选以鉴定大肠杆菌ENR抑制剂可产生四种结构上不同的命中类别。其中一个的几个成员2-(烷硫基)-4,6-二苯基吡啶-3-腈(“ thiopyridines”)抑制了两种纯化的ENR(50%抑制浓度[IC(50)] = 3至25 micro M )和金黄色葡萄球菌和枯草芽孢杆菌的生长(MIC = 1至64 micro g / ml)。对细胞生长的影响部分归因于对脂肪酸生物合成的抑制,这可以通过抑制[[14] C]乙酸酯向脂肪酸的掺入以及低表达ENR编码基因的细胞敏感性的提高来判断(四到五八倍MIC偏移)。该化学系列的各种化合物的合成揭示了IC(