4—取代苯基—6—叔丁基—5—硫酮—1,2,4—三嗪—3—酮的合成

含有1,2,4三嗪母体环的化合物与核糖连接后,能参与蛋白质分子的合成,改变蛋白质的分子结构,具有抗癌、抗病毒、抗菌及杀虫除草等多种药物活性。作为三嗪类化合物的重要分支,4,6二取代5硫酮1,2,4三嗪3酮由于合成及分离上的困难,目前研究得较少[1][2]。4位为芳香基、6位为叔...     

手性1—芳基—2,2—甲基—1,3—丙二醇

简要综述了手性１－芳基－２，２－二甲基－１，３－丙二醇及其衍生物在不对称合成中应用和反应，包括作为手性化学位移试剂、拆分试剂、辅助剂、配体和不对称合成中间体。     

4—取代苯基—6—甲基—5—硫代—1,2,4—三嗪—3—酮的合成

合成了一系列新的４，６－二取代－５－硫代－１，２，４－三嗪－３－酮类化合物，并用元素分析、ＩＲ、＾１Ｈ ＮＭＲ及ＭＳ对其结构进行了表征。     

1—芳氧乙酰氧基—1—（1H—1,2,4—三唑—1—基）—3,3—二甲基—2—丁酮衍生物…

以三乙胺为缚酸剂，用芳氧乙酸同ω－溴化－ω－（１Ｈ－１，２，４－三唑－１－基）频哪酮反应，合成了一系列三唑类新化合物，探讨了化合物的合成方法。通过ＩＲ、＾１Ｈ ＮＭＲ、ＭＳ分析及元素分析确定了化合物的结构。生物活性测定结果表明，部分化合物具有良好的除草活性，同时表现出一定程度的植物生长调节活性及杀菌活性。     

（3—苄基—4—芳酰基—1,2,4—三唑—5—基）（5—苯基—1,3,4—E…

通过３－苄基－４－芳酰基－１，２，４－三唑－５－巯基负离子在２－甲磺酰基－５－苯基－１，３，４－Ｅ二唑环２－位上的亲核取代反应，制得１３个新的（３－苄基－４－芳酰基－１，２，４－三唑－５－基）（５－苯基－１，３，４－Ｅ二唑－２－基）硫醚衍生物。经元素分析、ＩＲ、＾１Ｈ ＮＭＲ和ＭＳ裂解碎片分析确认结构。初步观察了它们在０．０１％浓度时对大肠杆菌繁殖的抑制作用。     

1,2—双（1‘—苯基—3’—甲基—5‘—氧代吡唑—4’—基）—1,2…

用萃取法合成了１５种１，２－双（１＇－苯基－３＇－甲基－５＇－氧代吡唑－４＇－基）－１，２苯二酮（ＢＰＭＯＰＰ，简作Ｈ２Ｌ）稀土配合物。元素分析确定其化学组成为ＲＥ２Ｌ３·ｎＨ２Ｏ。通过电子光谱、红外光谱、核磁共振谱、热谱、摩尔电导等进行了表征，并讨论了配合物的性质。     

3—（3,5—二氨基—2,4,6—三硝基苯基）氨基—5—硝基—1,2,4—三唑的合成

多硝基多氨基三唑类衍生物作为含能材料,具有高氮、致密、钝感等优点。本文通过3-氨基-1,2,4-三唑和三硝基三氯苯的缩合,再经过三唑碳原子上的硝化反应和芳环上的氨化反应,合成并鉴定了标题化合物。     

锆—氟—7—碘—8—羟基喹—5—磺酸—EDTA—表面活性剂体系的荧光光度研究

在ＰＨ５．５－７．０的ＨＡｃ－ＮａＡｃ缓冲溶液中，锆与氟、７－碘－８－羟基喹啉－５磺酸、ＥＤＴＡ及十六烷基溴化铵形成五元荧光络合物，其组成为Ｚｒ（Ⅳ）：Ｆ：Ｈ２ＱＳＩ：ＥＤＴＡ：ＣＴＭＡＢ＝１：２：１：１：４。络合物的最大激发波长（λｅｘ）为３６５ｎｍ，最大发射波长为５００ｎｍ。     

Fe—Ce—N—O,Fe—Y—N—S溶液的热力学研究

本文主要研究了在1570～1650℃范围内Fe-Ce-N-O、Fe-Y-N-S溶液的热力学性质,得到主要结果如下:(1)铈、钇增加氮的溶解度,氧轻微地增加氮的溶解度,硫轻微地减少氮的溶解度;(2)铈、钇、氧、硫与氮的相互作用系数与温度的关系。e_N~(Ce)=(-6230/T) 2.670,e_N~Y=(-6640/T) 2.986,e_N~O=(-3497/T) 1.650,e_N~S=264/T-0.128;(3)铈、钇脱氮产物为CeN、YN;(4)铈、钇脱氮常数与温度的关系:1gK_(CeN)-(-20960/T) 7.972,1gK_(YN)=(-20440/T) 7.863。     

长春工程学院——应用化学系

长春工程学院是一所以工科为主，兼有理、文、管等多学科的全日制普通本科学校。学院立足地方、面向全国水利、电子、电力、建筑、机械、化工、冶金、交通、市政、工商、经贸、资源开发等行业，培养、技术、管理、经济、人文、艺术等方面的高级应用型人才。     

Evaluation of binding performance of bioactive compounds against main protease and mutant model spike receptor binding domain of SARS-CoV-2: Docking,ADMET properties and molecular dynamics simulation study

Phytochemicals present in medicinal plants have a variety of biological activities that help to combat against diseases. As part of efforts to study the binding performance of different phytochemicals derived from different plants like Zingiber officinale, Citrus limon, Syzygiumaromaticum, Ocimum tenuiflorum and Curcumin. We have screened 424 molecules. The binding affinity as well as physicochemical properties of the thebaine, acacetin, indomethacin, crinamineacetate, (S)-1-Piperideine-6-carboxylate, levamisole, melatonin, nicotinicacid, curcumin, methotrimeprazine, omeprazole, and methaqualone phytocompounds were analyzed through computational study. From the molecular docking study we found that, LEU50, ASN72, PRO96, TYR154, GLY170, ALA193, ARG222, and MET274 residues of main protease play a crucial role in binding with ligands. The present study revealed a noticeable interaction of GLY446, SER477, GLY482, THR500 and LEU518 residues with mutant of spike receptor binding domain SARS-CoV-2 protein were observed. Finally, 100 ns molecular dynamics simulation were used to study their dynamic properties as well as conformational flexibility. Free energy landscape analysis was performed of the 6LU7- acacetin and 6Y2E-acacetin systems and spike RBD-acacetin system. From molecular docking study and molecular dynamics study revealed that, the compound acacetin shows promising inhibitor towards both main protease as well as mutant spike RBD of SARS-CoV-2 protein.     

化学网络课程有效实施的课程观及教学策略

网络环境下教学过程各要素的角色、地位、作用发生了很大变化,必将引起课程和课堂的重构、引起“教”与“学”理念和方式的变革。本文探索新课程改革中构建有新意但又不脱离现实基础、具有个性化的化学网络课程,为学习方式的变革提供学习资源平台、教学管理平台和交互平台。并探讨化学网络课程的开发和实施中教师应有的课程观和教学策略,解决网络课程实施的有效性问题,体现以学生为本的教育价值观和体现学生个性发展的课程和教学目标。     

Novel guanidinium-based ionic liquids as stationary phases for capillary gas chromatography

<正>The present study describes guanidinium-based ionic liquids(GBILs) as stationary phases for capillary gas chromatography (CGC) and to the best of our knowledge,no related reports are available up to now.In this study,a hexaalkylguanidinium ionic liquid(DOTMG-NTf_2) was synthesized and coated statically onto capillary columns.Selectivity of the stationary phase was evaluated by separating Grob test mixture,test mixture,alcohols mixture,and fatty acid methyl esters mixture,and thermal stability was investigated as well.The present study demonstrates that GBILs as CGC stationary phases exhibit satisfactory selectivity and thermal stability and have a great potential as new candidates for CGC stationary phases.     

表面活性剂作为电解液添加剂在毛细管电泳中的应用

本综述归纳了近年来毛细管电动色谱的理论研究，以及阴离子、阳离子和非离子表面活性剂的应用研究工作，并介绍了毛细管电动色谱的改良新技术，如环糊精、胆汁盐，其它旋光异构体选择及有机溶剂等作为添加剂的应用，引用文献１７４篇。     

Pre-apoptotic sub-population cell sorting from diosgenin apoptosis induced 1547 cells by Sedimentation Field-Flow Fractionation. The effect of channel thickness on sorting performance

Apoptosis is one of the most important phenomena in cell biology. Pre-apoptotic cells, defined as cells engaged in early stages of apoptosis, could be used as a cellular tool to study apoptosis pathways. The human 1547 osteosarcoma cell line and diosgenin (a plant steroid) association was selected as an in vitro cellular apoptosis model. In a previous study, using this model, we demonstrated that SdFFF monitored apoptosis induction as early as 6h after incubation. In this study, we investigated the capacity of Sedimentation Field-Flow Fractionation (SdFFF) to sort an enriched population of pre-apoptotic cells from 1547 cells incubated for 6 h with 40 microM diosgenin. In that way, two different separation devices which differed especially in channel thickness, 125 and 175 microm, were used and compared. Results showed, for the first time, that SdFFF is an effective method to obtain an enriched pre-apoptotic sub-population. These results suggest, as a new application, that SdFFF could be an included tool in the study of apoptotic mechanisms or the kinetic action of apoptotic drugs.     

Shell-isolated Nanoparticle-enhanced Raman Spectroscopy towards In-Situ Investigating of Interfacial Structure

Since the discovery of surface-enhanced Raman spectroscopy(SERS), it has been rapidly applied to the in situ study of electrochemical interfaces. Shell-isolated nanoparticle-enhanced Raman spectroscopy(SHINERS) stands out as one of the most powerful tools for the in situ study of interfacial structures, especially on well-defined single crystal surface. This perspective paper focuses on the study of interfacial structures with the SHINERS technique, including the electronic structure of heterogeneous metal surfaces, and the detection of molecules absorbed on the surface, as well as intermediate species, during electrochemical reactions. Finally, we present an outlook on future research and development of SHINERS for studying interfacial structures.     

主链含吡啶环的聚合物

介绍了国内外有关主链含吡啶环聚酰胺、聚酰亚胺、聚苯并咪唑、聚吡咙、聚酯以及聚氨酯等芳杂环或杂链高分子的研究，特别着重于含吡啶环的二元酚、二元酸、二元胺、四元胺类单体以及主链含吡啶环聚合物的分子设计、合成反应、结构与性能表征等。     

Comparative surface analysis study of the solid electrolyte interphase formation on graphite anodes in lithium‐ion batteries depending on the electrolyte composition

The composition of the solid electrolyte interphase (SEI) on graphite anodes is characterized within a comparative surface analytical study varying systematically the electrolyte composition and the cycling conditions. In particular, the conducting salts lithium hexafluorophosphate and lithium bis(trifluoromethanesulfonyl)imide as well as vinylene carbonate and 1‐fluoroethylene carbonate as different electrolyte additives are compared regarding the SEI formation under different cycling conditions. A comprehensive study using X‐ray photoelectron spectroscopy revealed pronounced differences of the SEI compositions at different aging stages. Both additives significantly influence the SEI composition and are able to prevent from parasitic side reactions as well as from decomposition of the conducting salt lithium hexafluorophosphate. This study suggests a promising approach to improve the SEI properties to enhance long‐term stability of lithium‐ion batteries by changing the electrolyte composition. Copyright © 2016 John Wiley & Sons, Ltd.     

电喷雾质谱在非共价生物—有机分子复合物研究中的应用

大量实验证明能够准确测定生物大分子分子量（２０，０００Ｄａ）的电喷雾质谱在分析溶液中生物化学作用方面有着巨大的潜力。本文综述了电喷雾质谱在分析液中特异性非共价生物－有机分子复合物方面的应用。     

Studies on the alkylation of phenolate in an organofluorine solvent and its application to the synthesis of myrsinoic acids A and E

Among the distinct features of organofluorines, solubility properties to molecules often enable unique applications. More importantly, organofluorines can be compatible with chemical reactions in general, even under harsh conditions. In this context, a study on the alkylation of phenolate using an organofluorine solvent were performed for the preparation of ortho-alkyl phenols. Herewith, the study on the alkylation of phenolate in an organofluorine solvent as well as its application to the synthesis of bioactive terpenylated phenolic natural products, myrsinoic acids A and E, will be reported. Our study suggested that organofluorine solvents could be better alternatives to the conventional nondissociating solvents as organic reaction media to suppress the nondesirable and nonselective side reactions such as in the ortho-alkylation of phenolate.