吡啶基双苯并咪唑的合成及其荧光性能

以多聚磷酸(PPA)为催化剂和溶剂,氮气保护下,吡啶基芳香二酸与邻苯二胺经缩合反应合成了三个新的吡啶基双苯并咪唑化合物(2a~2c),其结构经¹H NMR, ¹³C NMR, FT-IR和元素分析表征。2a~2c的固体荧光发射波长分别为473 nm, 427 nm和453 nm。     

新型氮杂环卡宾银(I)配合物的合成及其晶体结构

以取代苄氯(1a~1c)为起始原料,与咪唑经氮烷基化反应制得苄基咪唑氯盐(2a~2c); 2a~2c与氧化银经原位去质子化反应合成了3种新型的氮杂环卡宾银配合物--(NHC)AgCl［NHC: 1,3-二(4-甲氧基苄基)咪唑-2-亚基(3a), 1,3-二(3-甲氧基苄基)咪唑-2-亚基(3b)］和［(NHC)AgCl]₂［NHC=1,3-二(4-氯苄基)咪唑-2-亚基(3c)］,其结构经¹H NMR, ¹³C NMR, IR,元素分析和X-射线单晶衍射表征。3a~3c单晶结构均属单斜晶系,3a为P2₁/n空间群,3b和3c为P2₁/c空间群,3a和3b为单核银配合物,3c为双核银配合物。     

新型熊果酸单糖苷的简便合成

以熊果酸为原料,经苄基化反应制得熊果酸苄酯(2); 2与三氯乙酰亚胺酯经糖苷化反应制得酯保护的熊果酸-3-糖苷（4a~4d）;4a~4d依次脱去苄基和苯甲酰基合成了4个熊果酸-3-糖苷(6a～6d,其中6c为新化合物),其结构经¹H NMR, ¹³C NMR和MS(ESI)表征。     

新型含1,2,3-三氮唑的染料木素糖缀合物的合成

以染料木素为起始原料,经两步反应制得中间体7-O-炔丙基染料木素(3);以CuI为催化剂,3与叠氮乙酰基糖经Click反应合成了7-O-［1-(2,3,4,6-四-O-乙酰基-β-D-糖苷)1H-1,2,3-三氮唑-4-甲基］-染料木素(5a~5c); 5a~5c经去乙酰基制得三种含1,2,3-三氮唑的氮苷染料木素糖缀合物(6a~6c)。3, 5和6均为新化合物,其结构经¹H NMR, ¹³C NMR和HR-MS表征。     

基于姜黄酮骨架的新型螺环氧化吲哚类化合物的合成及其抗癌活性

以取代靛红、芳姜二烯酮与α-氨基苯乙酸为原料,在甲苯中回流,经1,3-偶极子3+2环加成反应合成了3个新型的基于姜黄酮骨架螺环氧化吲哚类化合物(3a~3c),收率65%~73%, dr值10/1~15/1,其结构经¹H NMR, ¹³C NMR和HR-MS（ESI-TOF）表征,相对构型经3c的单晶结构确定。采用MTT法研究了3a~3c对人白血病细胞(K562)、人肺癌细胞(A549)和人前列腺癌(PC-3)的体外抗肿瘤活性。结果表明：化合物3b对K562具有明显的抑制活性（IC₅₀为37.5 μM）,接近于阳性对照药顺铂。     

无溶剂自催化合成吡咯或吲哚Michael加成产物

在吡咯或吲哚自身N－H的催化下,在无溶剂条件下合成了3个吡咯和5个吲哚Michael加成产物(2a～2c和3a～3e,其中2b和3a～3e为新化合物),收率80%～92%, 3a~3c的d/r值分别为3.8 : 1, 1.3 : 1和1.1 :1,其结构经¹H NMR, ¹³C NMR, IR和HR-MS(ESI)表征。     

多取代1,4-戊二烯-3-醇的合成及其在螺环四氢喹啉衍生物合成中的应用

以取代邻氨基苯甲酸为起始原料,经6步反应合成了7个多取代1,4-戊二烯-3-醇（7a~7g）;以7a~7g为原料,5 mol%FeCl₃为催化剂,CH₂Cl₂为溶剂,于室温反应合成了7个螺环四氢喹啉衍生物（8a~8g）,其结构经¹H NMR, ¹³C NMR, IR和HR-MS(ESI)表征。采用X-射线单晶衍射研究了8d的晶体结构。结果表明：8d的晶胞参数a=14.001(3) , b=12.335(2) , c=11.587(3) , α=90°, β=95.497(2)°, γ=90°, V=1 991.9(7) ³, Z=4, μ=0.182 mm^-1, F(000)=816.0, R[F²>2σ(F²)］=0.053 7, wR(F²)=0.132 5。     

CuI/TMEDA催化合成芳基葡萄糖碳苷化合物

以THF为溶剂, CuI/TMEDA为催化剂,四乙酰溴代葡萄糖与芳基溴化镁经取代反应合成了芳基葡萄糖碳苷（2a~2c）,其结构经¹H NMR和¹³C NMR确证。该方法立体选择性较好。在最佳反应条件(THF为溶剂,10% CuI和10% TMEDA为催化剂,于0 ℃反应至终点)下,2a~2c的收率为58%~71%, α/β为1/6.5~1/7.1。     

新型天麻素衍生物的设计、合成及抗肿瘤活性研究

以顺丁烯二酸酐为原料,依次经加成和取代反应制得一系列斑蝥素衍生物（3a~3c）;以葡萄糖为原料,经乙酰化、溴化和甲基化反应制得乙酰天麻素（7）; 7与3a~3c经酯化反应合成了一系列新型天麻素衍生物（8a~8c）;以5-氟尿嘧啶为原料,合成了新型天麻素衍生物（11）,其结构经¹H NMR, ¹³C NMR, IR和MS（ESI）表征。采用细胞增殖抑制实验法（MTT法）研究了8a~8c和11对肝癌细胞（HepG2和SMCC7721）的抑制活性。结果表明：8a, 8b, 8c和11对肝癌细胞株均有一定的抑制作用,其中8a的抑制活性最好,其IC₅₀为55.33 μmol·L^-1（HepG2）和42.07 μmol·L^-1（SMCC7721）。     

一锅法合成新型羟基环戊烯酮化合物

以二芳基乙酮（4a~4f）和取代丙酮（5a~5c）为原料,KHCO₃为碱,100 ℃空气条件下,在DMSO中经二芳基乙酮氧化、羟醛缩合一锅法合成了12个羟基环戊烯酮化合物（6a~6l）,其中6d, 6h和6i为新化合物,其结构经¹H NMR, ¹³C NMR和HR-MS(ESI)表征。     

Neutral diterpenoids of oleoresins of five species of conifers of Transcarpathia

The compositions of the neutral diterpenoids of the oleoresins of five species of conifers growing in the Transcarpathia have been studied. It has been found that the oleoresins ofAbies alba M.,Larix decidua M., andPicea excelsa L. contain more than 50% of neutral diterpenoids. The group and qualitative compositions of the oxygen-containing diterpenoids have been determined. In the oleoresins ofAbies alba,Picea excelsa, andPicea abies tertiary alcohols — cis-abienol and isocembrol — predominate, while inLarix decidua the main component is the hydroxy ester larixyl acetate. Primary alcohols related to the resin acids have been found in all the oleoresins investigated. Features of the distribution of diterpenoids according to the species of conifers have been revealed. The results obtained are necessary for the chemotaxonomy of conifers of the family Pinceae.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodynkh Soedinenii, No. 6, pp. 812–816, November–December, 1988.     

利用手持技术改进测定乙醇分子结构实验

利用压强传感器代替排水集气法,改进测定乙醇分子结构实验的仪器装置,并探索最佳反应条件。另外,设计两个空白实验,结合压强变化曲线对实验误差进行相关讨论。     

光谱仪测试范围的扩展

由于石化行业的生产需要，其材质的使用具有多样性和广泛性，经常会出现顾客委托的测试样品的一个或几个元素跨越光谱仪现有测试程序测量范围的情况。本法通过对光谱仪测试原理的认识，根据光谱仪的测试能力及标样的采集，实现了一个或几个元素测量范围的扩展，并对其测量的影响因素进行了研究。     

Effect of the Method of Modification of Zeolite X on Selectivity of Catalytic Methylation of Toluene

Theoretical and Experimental Chemistry - The effect of the method of modification of catalysts based on zeolite X by cesium and magnesium cations (ion exchange and impregnation) on the selectivity...     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

Influence of viscosity of medium on processes of oxygen quenching of excited states of mesoporphyrin

The oxygen quenching rate constants for singlet and triplet excited states of the dimethyl ester of mesoporphyrin IX increase with decreasing viscosity of the medium and reach a maximum at a viscosity of approximately 0.4 mPa·sec, after which the rate constants begin to decrease. The drop in rate constant with increasing fluidity of the medium may be related to a nonequilibrium character of the elementary act in the interaction of the reactants in the solvent cage. In viscous media such as isopropyl alcohol, isobutyl alcohol, and isoamyl alcohol, the reaction radius is greater than the sum of the radii of the reacting particles. The long-range character of these processes is due to the relatively weak dependence of the quenching probability on distance.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 2, pp. 161–167, March–April, 1989.     

Synthesis of tetrabenzoporphins of the basis of isoindoline

Chemistry of Heterocyclic Compounds -