病毒DNA整合到细胞基因组中是1型人类免疫缺陷病毒(HIV-1)复制周期中的关键步骤之一。因此,催化该过程的病毒酶整合酶(IN)作为新型抗病毒剂的靶标引起了极大的兴趣。我们对五个不同系列的亚甲基双膦酸酯(BPs),PO 3 H 2 –C(R)(X)–PO 3 H 2进行了结构-功能分析。,作为IN抑制剂,旨在评估抑制活性所需的结构元素。我们发现IN仅受BP在P–C–P主链的桥碳上带有一个氯苄基取代基R的抑制。这些BP以相似的效率抑制了两种IN催化的反应。它们还对某些具有突变的IN起作用,这些突变具有针对抗链转移抑制剂的HIV-1菌株的特征性突变。对各种BP抑制IN的机理的研究表明,它受桥碳上第二个取代基(X)的影响。在测试的化合物中,只有氨基直接结合到BP桥碳上的BP被认为是非竞争性抑制剂,因此,作为整合前复合物中IN活性的潜在抑制剂,它有可能被进一步研究。
Synthesis, structural/photophysical characterization and theoretical investigations with new β-pyridinium/quinolinium and β-bromine substituted bis(1,3-dimethylbarbituric acid) trimethine oxonol dyes that display large Stokes shifts
作者:Fereshteh Azamifar、M. Reza Naimi-Jamal、Ardeshir Rineh、Michael J. Kelso
DOI:10.1016/j.dyepig.2019.107758
日期:2020.1
photophysical properties of dye 3a in a series of organic solvents with different polarity confirmed intramolecular charge transfer (ICT). Optimized geometries of the synthesized dyes in the ground state calculated using density functional theory (DFT) at the B3LYP/6-311G(d,p) theory level identified that planar cis and trans configurations were preferred for the pyridinium/quinolinium and bromine substituted
开发了一种有效的三步法,用于合成新型β-吡啶鎓/喹啉鎓/溴取代的双(1,3-二甲基巴比妥酸)三甲氧肟酸染料,该方法涉及简单的三乙胺促进的1,3-二甲基巴比妥酸与三乙胺的缩合反应。预制的vinamidinium盐。1 H NMR,13 C NMR,IR和质谱数据证实了染料的结构。染料在CH 3 CN中的溶液分别在467–480 nm和531–712 nm范围内显示出最大的吸收和荧光发射,这表明染料显示出异常大的斯托克斯位移(〜230 nm)。研究染料3a的光物理性质在一系列具有不同极性的有机溶剂中证实了分子内电荷转移(ICT)。在B3LYP / 6-311G(d,p)理论水平上使用密度泛函理论(DFT)计算的基态合成染料的最佳几何形状确定了吡啶/喹啉鎓和溴取代的染料优选平面顺式和反式构型, 分别。TD-DFT对染料激发态结构的计算表明,松弛过程中笨重的吡啶鎓取代基的旋转是造成较大斯托克斯位移
Pyridinium-1-yl Bisphosphonates Are Potent Inhibitors of Farnesyl Diphosphate Synthase and Bone Resorption
作者:John M. Sanders、Yongcheng Song、Julian M. W. Chan、Yonghui Zhang、Samuel Jennings、Thomas Kosztowski、Sarah Odeh、Ryan Flessner、Christine Schwerdtfeger、Evangelia Kotsikorou、Gary A. Meints、Aurora Ortiz Gómez、Dolores González-Pacanowska、Amy M. Raker、Hong Wang、Ermond R. van Beek、Socrates E. Papapoulos、Craig T. Morita、Eric Oldfield
DOI:10.1021/jm040209d
日期:2005.4.1
We report the design, synthesis and testing of a series of novel bisphosphonates, pyridinium-1-yl-hydroxy-bisphosphonates, based on the results of comparative molecular similarity indices analysis and pharmacophore modeling studies of farnesyl diphosphate synthase (FPPS) inhibition, human Vgamma2Vdelta2 T cell activation and bone resorption inhibition. The most potent molecules have high activity against
Novel pyrimidine derivatives were prepared from the reaction of 2‐substituted 1,3‐bis(dimethylamino)‐trimethinium salts with thiourea or guanidine in the presence of ethyl‐diisopropylamine in ethanol at reflux, and also some 5‐substituted pyrimidine‐2‐thiols has been used for the synthesis of novel disulfane compounds. Infrared, 1H NMR, 13C NMR, and mass spectral data confirm the molecular structures
新型嘧啶衍生物是由2-取代的1,3-双(二甲基氨基)-三甲基亚锡盐与硫脲或胍在乙基二异丙胺存在下于乙醇中回流反应制得的,还有一些5-取代的嘧啶-2-硫醇已用于合成新型二硫醚化合物。红外,1 H NMR,13 C NMR和质谱数据证实了新合成化合物的分子结构。在DMSO中检测了这些化合物的紫外光谱行为和ƛ最大这些化合物进行了研究。
Facile synthesis of novel 3-substituted pyrido[1,2-a]pyrimidinium salts using vinamidinium salts
ABSTRACT Pyrido[1,2-a]pyrimidinium salt derivatives 2a–f were prepared in good yields by condensation of 2-aminopyridine with 2-substituted vinamidinium salt derivatives 1a–f. The purity and the structure of the synthetized compounds were ascertained by elemental analysis, mass spectrometry, infrared, and NMR (¹H and ¹³C 400 MHz) spectroscopy. GRAPHICAL ABSTRACT