三苄基锡羧酸酯的合成及其结构表征

本文以(三苄基锡)氧化物和相应的羧酸反应, 合成了20个三苄基锡羧酸酯, 由波谱对结构的研究表明, 红外光谱的酰基振动频率与羧基上取代基的空间和电子效应密切相关, 三苄基锡羧酸酯的结构微小变化, 明显地反映了^1^1^9Sn和^1^3CNMR化学位移的差异, ^1^1^9Sn化学位移与三苄基锡取代的苯甲酸酯的对位取代基Hammett常数(σ)之间存在着良好的线性关系: δ~1~1~9~S~n=15.48σ+14.23, n=7, r=0.995, 去烃基化是这一类化合物质谱裂解的特点。     

含氮杂环羧酸基二（三）苄基锡配合物的合成

烃基氯化锡及其衍生物具有广泛的生物活性,如杀虫、杀菌、抗癌等。近年来已有较多报道［１］,但关于杂环羧酸基烃基锡配合物的合成研究报道则很少,而含氮杂环羧酸基苄基锡配合物的合成研究尚未见文献介绍。为寻找具有更高生物活性的有机锡配合物,本文以二（三）苄基氯...     

三烃基锡杂环羧酸酯的合成

合成了十种三烃基锡杂环羧酸酯R~3^1SnO~2C-R^2(R^1=n-C~4H~9, Ph-CH~2; R^2=呋喃, 吡啶, 吲哚烷基), 利用IR, ^1H NMR及元素分析确定了这些化合物的组成和结构。     

二苯基锗杂环羧酸酯的合成、表征及生物活性研究

合成了8种二苯基锗杂环羧酸酯Ph2Ge(O2CR)2(R=2-呋喃基、2-呋喃乙烯基、2-噻吩基、2-吡啶基、3-吡啶基、4-吡啶基、3-吲哚甲基、3-吲哚丙基),利用元素分析、红外光谱、核磁共振氢谱和质谱表征了这些化合物的结构。体外实验表明,这些化合物对MCF-7、WidDr和EC癌细胞具有较好的抑制活性。     

双(三苄基锡)二元羧酸酯的合成及生物活性

以三苄基氧化锡和相应的二元羧酸反应,合成了14种新的双(三苄基锡)二元羧酸酯。利用元素分析、IR、^1HNMR和MS表征了这些化合物的结构。生物活性测试表明,该类化合物具有较好的杀菌活性。     

三苄基锡羧酸酯的合成

合成了三苄基锡苯甲酸酯,三苄基锡水扬酸酯,三苄基锡3－羟基－4－羧基苯磺酸酯和三苄基锡对氯苯氧乙酸酯4种化化合物,对其进行了IR,1H NMR表征,发现苯甲酸,水扬酸和对氯苯氧乙酸与三苄基锡氧化物反应生成三苄基锡羧酸酯,而对磺基水杨酸与三苄基锡氧化物反应生成三苄基锡3－羟基－4－羧基苯磺酸酯,4种化合物对苯甲醛,庚醛和乙二醇缩合反应的催化活性测试表明,其活性次序为：三苄基锡3－羟基－4－羧基苯磺酸酯＞三苄基锡水杨酸酯＞三苄基锡苯甲酸酯＞三苄基锡对氯苯氧乙酸酯。     

氯代二苯基锗杂环羧酸酯的合成与表征

以二苯基二氯化锗和杂环羧酸钠为原料,合成了8种氯代二苯基锗杂环羧酸酯Ph2Ge(Cl)O2CR(R=2-呋喃基,2－呋喃乙烯基,2－噻吩基,2－吡啶基,3－吡啶基,4－吡啶基,3－吲哚甲基,3－吲哚丙基）。利用元素分析,红外光谱、核磁共振谱和质谱表征了这些化合物的结构。结果表明杂环羧酸是以单齿形式与锗原子键合,生成了四配位的有机锗化合物,生物活性测试表明,该类化合物具有较高的体外抗癌活性。     

双(三烃基锡)二元羧酸酯的合成、结构和农药活性普筛

合成了一系列双(三烃基锡)二元羧酸酯类化合物,表征了这些化合物的结构,并进行了农药活性普筛。结果表明,三环己基锡系列大多具有很好的杀螨和杀虫活性,三苯基锡系列则在除草和植物生物刺激方面有一定效果。同时,还发现农药活性同二元羧酸酯的骨架有关,邻苯二甲酸和丁烯二酸衍生物的效果优于脂肪二酸衍生物。     

三苯基锗杂环羧酸酯的合成与表征

合成了8种三苯基锗杂环羧酸酯Ph~3GeO~2CR(R=2-呋喃、2-呋喃乙烯基、2-噻吩基、2-吡啶基、3-吡啶基、4-吡啶基、3-吲哚甲基、3-吲哚丙基),利用元素分析、红外光谱、核磁共振氢谱和质谱表征了这些化合物的结构。体外实验表明,这些化合物对MCF-7和WiDr癌细胞具有较好的抑制活性。     

二苄基一氯化锡氨荒酸酯的合成与表征

合成了13个新的二苄基一氯化锡氨荒酸酯化合物(PhCH~2)~2Sn(Cl)Sn(Cl)S~2CNRR'。利用元素分析、UV、IR、^1HNMR谱和TG-DTA表征了它们的结构。初步生物活性研究表明,有些化合物表现出体外抑制白血细胞P~3~8~8生长的活性。     

Synthesis and characterization of tribenzyltin heteroaromatic carboxylates and crystal structure of tribenzyltin 4‐pyridinecarboxylate

Reaction of tribenzyltin chloride with 2‐furan‐, 2‐(2‐furanyl)‐vinyl‐, 2‐(5‐t‐butyl) furan‐, 2‐thiophene‐, 2‐pyridine‐, 3‐pyridine‐, 4‐pyridine‐, 3(1H)‐indole‐, 3(1H)‐indolylmethyl‐or 3‐[3(1H)‐indolyl]propyl‐carboxylate in 1:1 stoichiometry yielded tribenzyltin heteroaromatic carboxylate (PhCH₂)₃‐SnO₂CR. All compounds were characterized by elemental analysis, IR, ′H NMR and MS. The crystal structure of tribenzyltin 4‐pyridinecarboxylate was determined by single crystal X‐ray diffraction. In the crystal of tribenzyltin 4‐pyridinecarboxylate, the tin atoms are five‐coordinated in a trigonal bipyramidal structure with a linear polymer containing Sn–‐O bond with length of 0. 2142(2) nm and Sn–‐N bond with length of 0.2563(4) nm.     

邻烷氧基羰基苯磺酰胺衍生物的合成、表征及生物活性

磺酰胺类化合物是继磺酰脲与咪唑啉酮除草剂之后开发的乙酰乳酸合成酶 (ＡＬＳ)抑制剂的另一重要领域 ,已筛选出一些高活性的新品种[1～ 3] 。为寻找新的性能优良的活性物质 ,进一步研究活性与结构的关系 ,本文设计将磺酰胺类和酰胺类除草剂的基本骨架用一个亚甲基 ＣＨ2 连结起来 ,相当于在磺酰脲桥链中间插入了一个亚甲基 ,共合成了 1 6个新的邻烷氧基羰基苯磺酰胺衍生物( 2ａ～ 2ｐ) ,并初步测试了它们的生物活性。1　实验部分1 1　仪器和试剂ＪＥＯＬＦＸ 90Ｑ型、ＢＲＵＫＥＲＡＣ Ｐ2 0 0型核磁共振仪 ,ＴＭＳ为内标 ;Ｓｈｉｍａｄ…     

N-苯基-N''-(5-苯基-2-呋喃酰基)脲的合成与生物活性

为考察脲桥变化对活性的影响 ,通过异氰酸苯酯和取代苯基呋喃甲酰胺反应合成了 8个未见报道的N 苯基 N’ ( 5 苯基 2 呋喃酰基 )脲化合物 ,其结构均经元素分析 ,IR和1HNMR确证。测定了它们的生物活性 ,发现所合成的化合物对蚊幼虫有明显的几丁质抑制活性     

Synthesis and properties of cocotriethoxylpropanediamine oxide

A new kind of amine oxide surfactant – cocotriethoxylpropanediamine oxide (CTPDAO) – was synthesized by a two-step process. The molecular structure was characterized by FTIR spectra and ¹H NMR. The new surfactant showed high surface activity in aqueous solution in the surface tension measurement. Emulsifying capacity and wetting ability were studied in comparison to dodecyldimethylamine oxide (DDMAO). The results indicate that this new surfactant could reach the lowest surface tension of 30.4?mN?m^?1 in aqueous solution with a critical micelle concentration (CMC) of 0.23?mmol L^?1. The wetting ability of DDMAO is better than that of CTPDAO. Compared with CTPDAO, DDMAO shows a greater capacity to emulsify soybean oil, although CTPDAO is a better emulsifying agent for liquid paraffin. The foaming properties and thickening function of DDMAO and CTPDAO mixed with alcohol ether sulfate (AES) and dodecylbenzene sulfonate (LAS) were also investigated. The results show that CTPDAO is a superior foam stabilizer than DDMAO while CTPDAO and DDMAO both have excellent thickening functions.     

2-(4-甲硫基苯氧基)－4H－咪唑啉-4-酮衍生物的合成及生物活性

咪唑啉酮;2-(4-甲硫基苯氧基)－4H－咪唑啉-4-酮衍生物的合成及生物活性     

N－(5－四唑基)－N＇－芳氧乙酰基脲的合成及生物活性

细胞分裂素;N－(5－四唑基)－N＇－芳氧乙酰基脲的合成及生物活性     

A Stereoselective Synthesis of (E)-Divinyl Diselenides and (E)-Divinyl Ditellurides

Insertion of elemental selenium or tellurium into the Csp²-Zr bond of alkenylchlorozirconocenes followed by oxidation in air affords (E)-divinyl diselenides or (E)-divinyl ditellurides.     

Titanium(IV) carboxylate complexes: Synthesis,structural characterization and cytotoxic activity

Four titanium(IV) carboxylate complexes [Ti(η⁵-C₅H₅)₂(O₂CCH₂SMes)₂] (1), [Ti(η⁵-C₅H₄Me)₂(O₂CCH₂SMes)₂] (2), [Ti(η⁵-C₅H₅)(η⁵-C₅H₄SiMe₃)(O₂CCH₂SMes)₂] (3) and [Ti(η⁵-C₅Me₅)(O₂CCH₂SMes)₃] (4; Mes = 2,4,6-Me₃C₆H₂) have been synthesised by the reaction of the corresponding titanium derivatives [Ti(η⁵-C₅H₅)₂Cl₂], [Ti(η⁵-C₅H₄Me)₂Cl₂], [Ti(η⁵-C₅H₅)(η⁵-C₅H₄SiMe₃)Cl₂] and [Ti(η⁵-C₅Me₅)Cl₃] and two (for 1–3) or three (for 4) equivalents of mesitylthioacetic acid. Complexes 1–4 have been characterized by spectroscopic methods and the molecular structure of the complexes 1, 2 and 4 have been determined by X-ray diffraction studies. The cytotoxic activity of 1–4 was tested against tumor cell lines human adenocarcinoma HeLa, human myelogenous leukemia K562, human malignant melanoma Fem-x, and normal immunocompetent cells, that is peripheral blood mononuclear cells PBMC and compared with those of the reference complexes [Ti(η⁵-C₅H₅)₂Cl₂] (R1), [Ti(η⁵-C₅H₄Me)₂Cl₂] (R2), [Ti(η⁵-C₅H₅)(η⁵-C₅H₄SiMe₃)Cl₂] (R3) and cisplatin. In all cases, the cytotoxic activity of the carboxylate derivatives was higher than that of their corresponding dichloride analogues, indicating a positive effect of the carboxylato ligand on the final anticancer activity. Complexes 1–4 are more active against K562 (IC₅₀ values from 72.2 to 87.9 μM) than against HeLa (IC₅₀ values from 107.2 to 142.2 μM) and Fem-x cells (IC₅₀ values from 90.2 to 191.4 μM).     

Synthesis,characterization and in vitro antitumour properties of complexes of bis(alkoxycarbonylmethyl)tin dibromides with bidentate nitrogen ligands

The synthesis and characterization of 10 new bis(;alkoxycarbonylmethyl)tin dibromides and of 14 of their complexes with bidentate nitrogen ligands (;bipyridyl, 1,10-phenanthroline and 5-nitro-1, 10-phenanthroline) are described. Their proton NMR spectra are discussed. Their in vitro antitumour activity against two human cancer cell lines, MCF-7 and WiDr, is low compared to antitumour drugs used clinically.