呋喃甲酰基吡唑啉酮双席夫碱配合物的合成及其生物活性

呋喃甲酰基吡唑啉酮双席夫碱配合物的合成及其生物活性李锦州＊于文锦杜晓燕（哈尔滨师范大学化学系哈尔滨１５００８０）（哈尔滨医科大学公共卫生学院哈尔滨）关键词酰基吡唑啉酮，双席夫碱，配合物，合成，生物活性１９９７－０６－１６收稿，１９９７－０９－０９修回...     

呋喃甲酰基吡唑啉酮缩β-丙氨酸配合物的合成、表征及生物活性

呋喃甲酰基吡唑啉酮缩β-丙氨酸配合物的合成、表征及生物活性;席夫碱;抑菌活性     

呋喃甲酰基吡唑啉酮缩邻氯苯胺席夫碱Cu(Ⅱ),Fe(Ⅲ)和Cr(Ⅲ)配合物的合成与表征

合成1-苯基-3-甲基-4(α-呋喃甲酰基)吡唑啉酮-5缩邻氯苯胺新型席夫碱试剂及其铜、铁和铬配合物,元素分析、摩尔电导数据表明配合物的组成分别为:Cu(L)2,Fe(L)3和[Cr(L)2(H2O)2]Cl.通过红外光谱、紫外光谱、差热-热重分析对配合物进行表征.确证了该配合物的结构.     

酰基吡唑啉酮缩氨基硫脲Ni(Ⅱ),Co(Ⅲ)和Cr(Ⅲ)配合物的合成、表征及生物活性

合成了含硫席夫碱1-苯基-3-甲基-4-(α-呋喃甲酰基)吡唑啉酮-5缩氨基硫脲(HL)及其Ni(Ⅱ),Co(Ⅲ)和Cr(Ⅲ)配合物.元素分析及摩尔电导率表明,新配合物的组成为[NiL2]·C2H5OH,[CoL2]Cl·H2O,[CrL2]Cl·1/2H2O.运用红外光谱、紫外光谱、核磁共振谱和磁矩对配合物进行了表征.抗菌实验表明,配合物具有较强的抗菌生物活性.     

噻吩甲酰基吡唑啉酮缩乙二胺稀土配合物的合成、表征及生物活性

双席夫碱;噻吩甲酰基吡唑啉酮缩乙二胺稀土配合物的合成、表征及生物活性     

呋喃甲酰基吡唑啉酮缩氨基硫脲稀土配合物的合成、表征及生物活性

合成了含硫席夫碱试剂 1-苯基-3-甲基-4-((-呋喃甲酰基)吡唑啉酮-5缩氨基硫脲(L)及其10种稀土配合物. 元素分析及摩尔电导值表明新配合物的组成为[REL2(NO3)2]NO3(RE= La,Pr,Nd,Sm,Eu,Tb,Dy,Er,Yb,Y. 运用红外光谱、紫外光谱、核磁共振谱和荧光光谱对配合物进行了表征. 抗菌实验表明配合物具有较强的抗菌生物活性.     

4-酰基-双(1,3-二苯基-5-吡唑啉酮)铽(Ⅲ)配合物的合成及荧光性质

合成了3种4-酰基-双(1,3-二苯基-5-吡唑啉酮),1,5-双(1,3-二苯基-5-吡唑啉酮-4-基)-1,5-戊二酮;1,6-双(1,3-二苯基-5-吡唑啉酮-4-基)-1,6-己二酮和1,10-双(1,3-二苯基-5-吡唑啉酮-4-基)-1,10-癸二酮,通过元素分析、红外光谱和核磁共振氢谱对产物组成进行了表征.合成了它们的Tb(Ⅲ)二元和三元[1,10-二氮杂菲(Phen) 或2,2-联吡啶(Dipy)]配合物,测定了配合物的荧光光谱,对其荧光性质进行了研究.结果表明,配合物发射Tb(Ⅲ)的特征荧光,4-酰基-双(1,3-二苯基-5-吡唑啉酮)配体的三重态能级与Tb(Ⅲ)的最低激发态(5D4)能级匹配较好;配合物荧光强度随4-酰基-双(1,3-二苯基-5-吡唑啉酮)配体2个吡唑环间碳链的增长而减弱;第2配体Phen 和Dipy具有荧光增强作用,且前者优于后者.     

稀土(Ⅲ)-HPMaFP-2,2''''-联吡啶混配配合物的合成和性质

1-苯基-3-甲基-4-(α-呋喃甲酰基)吡唑啉酮-5(HPMaFP)是一类新型β双酮螯合萃取剂。尚未见HPMaFP与稀土离子混配配合物的报道,这类研究对于深入探讨协萃机理和开发新型光谱材料,具有一定意义。本文合成了HPMaFP和2,2'-联吡啶(Dpy)的14个稀     

CPPαFP缩糠胺席夫碱铜配合物的合成及其与DNA相互作用

合成出一种新型酰基吡唑啉酮席夫碱试剂(HL):1-对氯苯基-3-苯基-4-(α-呋喃甲酰基)-吡唑啉酮-5缩糠胺席夫碱及其铜配合物。由元素分析、络合滴定法、红外光谱、热重谱、质谱和核磁共振氢谱对配体和配合物的结构进行了表征并推测出配合物组成为CuL2,同时对该配合物与小牛胸腺DNA之间的相互作用进行了研究。结果表明:在测试条件下,配体以酮式和烯醇式共存。配位时酮式结构可能转化为烯醇式结构,按去质子的方式以羟基上的氧负离子和亚胺基上的氮原子双齿形式与铜中心离子成键;与小牛胸腺DNA作用实验结果显示:配合物主要以插入方式与CT-DNA相互作用,嵌入CT-DNA的碱基对中。     

呋喃甲酰基吡唑啉酮双席夫碱稀土配合物的合成、表征及生物活性

合成了１１种新的稀土与Ｎ,Ｎ’－双「（１－苯基－３－甲基－５－氧－４－吡唑啉基）α－呋喃次甲基」乙二亚胺（ＨＰＭαＦＰ）２ｅｎ配合物。元素分析及摩尔电导值表明配合物的组成为「ＲＥ（ＨＰＭαＦＰ）２ｅｎ（ＮＯ３）２」ＮＯ３」ＮＯ３（ＲＥ＝Ｌａ,Ｐｒ,Ｎｄ,Ｓｍ,Ｅｕ,Ｔｂ,Ｄｙ,Ｈｏ,Ｅｒ,Ｙｂ,Ｙ）。用红外学谱、紫外学谱、磁共振谱和荧光光谱对配合物进行了表征,证实席夫碱配体以四齿形式配位,ＲＥ＾３     

多环芳二酐型聚酯亚胺膜的透气性能

多环芳二酐型聚酯亚胺膜的透气性能李悦生，丁孟贤，徐纪平（浙江大学高分子科学与工程研究所，杭州，３１００２７）（中国科学院长春应用化学研究所）关键词聚醚酰亚胺，聚酯酰亚胺，膜，透气性通常的聚酰亚胺加工性能较差，在芳环二酐的苯环间引入醚键等柔性基团后，其...     

Determination and study on residue and dissipation of benazolin-ethyl and quizalofop-p-ethyl in rape and soil

A QuEChERS (quick, easy, cheap, effective, rugged, and safe) method for the determination of benazolin-ethyl and quizalofop-p-ethyl in rape and soil by high-performance liquid chromatography-tandem mass spectrometry has been developed in this study. The residue and dissipation of benazolin-ethyl and quizalofop-p-ethyl in rape and soil were determined with the developed method. The half-lives of benazolin-ethyl in rape straw and soil were 3.7–5.1 days and 14.3–26.3 days, respectively. The half-lives of quizalofop-p-ethyl in rape straw and soil were 5.0-6.1 days and 0.3–9.7 days, respectively. The residue of benazolin-ethyl and quizalofop-p-ethyl in rapeseed and soil were below the detection limit (i.e., 0.5?mg?kg^?1, the maximum residue level of European Union for quizalofop-p-ethyl).     

微量元素与疾病诊断治疗的研究现状及展望

对国内外微量元素与疾病的关系及其诊断治疗的研究现状及研究动向进行了综述，包括：微量元素与地方病、癌肿、心血管病、糖尿病、眼病、神经系统病等。参考文献72篇。     

Ferrocene and ferrocenium modified clays and their styrene and EVA composites

In this work, ferrocene- and ferrocenium-containing salts were employed to modify montmorillonite. X-ray measurements show an increase in the interlayer spacing upon clay modification, which means that the larger and more organophilic cations were inserted into the gallery space of montmorillonite. Attempts to prepare nanocomposites of polystyrene and ethylene vinyl acetate copolymers lead to immiscible systems; the morphology of these systems was elucidated with TEM, XRD and cone calorimetry. The thermal stability of the composites is greater than that of the virgin polymer.     

Ti-V基储氢合金及其氢化物的物相结构与组分优化设计

Ti-V基储氢合金在室温、常压下即可表现出良好的储氢特性,且质量储氢容量明显高于传统AB₅型储氢合金,从而在氢气的精制和回收、运输和储存及热泵等方面有较早的应用。 此外,在混合气体分离、核反应堆中处理氢的同位素、镍氢电池及燃料电池负极材料等方面也得到了广泛的研究与关注。 基于目前Ti-V基储氢合金的研究现状,概述了该类合金的优势、限制性因素(包括成因)及改性手段。 此外,为了进一步理解Ti-V基合金储氢机理、构建合金组分与储氢特性之间的对应关系,本工作重点围绕Ti-V基储氢合金及其氢化物的结构、组分优化设计展开综述,并对其未来研究方向做出展望。     

钒与糖代谢及糖尿病

微量元素钒作为生物体内必需元素，经证实有很重要的生理学功能，与机体糖代谢有十分密切的关系，且能降低糖尿病动物模型的高血糖，极有可能被开发为治疗糖尿病的药物。     

Synthesis and Optical and Redox Properties of Symmetric and Asymmetric BODIPYs

Herein, we present the synthetic route and the photophysical, electrochemical as well as laser properties of novel red‐emitting boron‐dipyrromethenes (BODIPYs) bearing arylethyne moieties. Such functionality is added along the main axis of the chromophore leading to single‐ and double‐substituted derivatives. The relationship between the dye structure and the lasing properties is studied in detail with the help of the photophysical and electrochemical properties as well as quantum mechanical simulations. The asymmetric substitution of the parent dye induces inhomogeneities in the charge distribution, which leads to an overall loss of the fluorescence capacity, mainly in polar media. Such non‐radiative deactivation processes can be softened by decreasing the electron‐donor ability of the substituent or even avoided by symmetrical substitution. Thus, grafting of the arylethyne moieties at the longitudinal axis of the indacene core results in an effective strategy to develop red‐edge BODIPYs with highly efficient and photostable laser emission.     

Conformations and steric and stacking interactions of trisubstituted ureas and thioureas with alkyl and phenyl groups

The monomeric ν(N—H) vibrations of various trisubstituted ureas of the R₂UPh type and -thioureas of the R₂TUPh type have been studied. The trans—out isomerism in the former and the trans—out—cis isomerism in the latter are discussed from the point of view of steric effect. The monomeric ν(N—H) vibrations of RPhUPh and RPhTUPh are also examined. The single band appearing in the spectrum of both ureas is characteristic of the cis form; this suggests the existence of phenyl—phenyl interaction (the stacking interaction proposed by Galabov et al. [10]). Behavior of ν(N—H) vibrations at several concentrations is shown to be clearly different in the three forms (trans, out and cis). The presence of the cis form is confirmed by solvent effect experiments.     

含茂基苯并三氮唑基镧系有机配合物的合成及表征

三茂基镧系化合物和苯并三氮唑在四氢呋喃中反应,合成了7个未见文献报道的含茂基苯并三氮唑基镧系有机配合物,经元素分析、IR和MS测定,从有关数据推测了这类配合物的可能结构。