利用氧化反应合成3—羟基—4—芳基—5—（1—苯基—5—甲基—1，2，3—三唑—4—基）—1，2，4—三唑衍生物的新方法

采用不同的氧化剂对ω[5-（1－苯基－5－甲基－1,2,3－三唑－4－基）－4－芳基－1,2,4－三唑－3－硫基]－ω－（1H－1,2,4－三唑－1－基）苯乙酮进行了氧化,结果发现KMnO4作为氧化剂时,氧化产物十分复杂,难于分离,而H2O2－AcOH及间氯过氧苯甲酸（MCPBA）又不能将其氧化,最后采用NaIO4作为氧化剂时没有得到相应的砜或亚砜而意外得到3－羟基－4－芳基－5－（1－苯基－5－甲基－1,2,3－三唑－4－基）－1,2,4－三唑衍生物,化合物的结构经元素分析和波谱确证,并对其生成机理作了初步讨论。     

5—（1—苯基—5—甲基—1，2，3—三唑—4—基）—4—芳基—1，2，4—三唑—3—硫基乙酸的合成和抗菌活性

合成一系列新的5-（1-苯基-5-甲基-1,2,3-唑-4-基）-4-芳基-1,2,4-三唑-3-硫基乙酸,所有化合物均经元素分析和波谱数据予以鉴定,对代表性化合物作了抗菌活性测试,结果表明它们都表现出不同程度的抗菌活性。     

7β-(1-芳基-5-甲基-1,2,3-三唑-4-甲酰胺基)-3-(2-芳胺基-1,3,4-噻二唑-5-硫亚甲基)头孢菌素衍生物的半合成和抗菌活性

通过2－芳胺基－1，3，4－噻二唑－5－硫醇1a,1b和头孢菌素母体7－ACA的亲核取代反应，先制得头孢菌素新母体1a,1b,用1－芳基－5－甲基－1，2，3－三唑－4－甲酰氯3a,3b与2a,2b缩合，制得头孢菌素新衍生物4a,4b。初步体外抗菌试验结果表明，所合成的头孢菌素衍生物4a,4b对革兰氏阳性菌显示出中等程度的抑制活性。     

2—氨基—4—氯—6—甲氧基嘧啶的合成

以硝酸胍和丙二酸二乙酯为起始原料,经环合,氯化,水解,甲氧基化,合成了２－氨基－４－氯－６－甲氧基嘧啶。其收率达到７０％,其结构经ＩＲ测试确定。目标化合物２－氨基－４－氯－６－甲氧基嘧啶可以用来制备抗肿瘤药物的重要中间体硝酸嘧啶氮芥化合物。     

水相中2—氨基—7，7—二甲基—4—对氟苯基—5—氧代—5，6，7，8—四氢—4H—苯并吡喃—2—甲酸乙酯的合成和晶体结构

标题化合物C20H22FNO4由4 氟苯亚甲基氰乙酸乙酯和5,5 二甲基 1,3 环己二酮在三乙基苄基氯化铵(TE BA)存在下在水中加热反应而得,结构通过单晶X射线衍射法确定,其晶体属三斜晶系,空间群P-1,Mr=359 39,a=0.8266(1)nm,b=0.9773(1)nm,c=1.2375(2)nm,α=81 40(1)°,β=73 41(1)°,γ=82 15(1)°,V=0.9426(2)nm3,Z=2,Dc=1.266g·mm-3,μ=0 094mm-1,F(000)=380,最终的偏离因子为R=0 0403,Rw=0 1057,在分子结构中平面1(苯环)与平面2(C(8)、C(13)、C(14)、C(15))之间的二面角为89 56°,平面2与平面3(C(8)、C(9)、C(10)、C(12)、C(13))之间的二面角为13 37°,平面1与平面3之间的二面角为102 70°.吡喃环为船式构象,而与吡喃环稠合的六元环为信封式构象.     

2-氯-9-羟基芴-9-甲酸及其甲酯的合成

以9－羟基芴－9－甲酸为原料合成了2－氯－9－羟基芴－9－甲酸及其甲酯，用元素分析仪，IR和1HNMR确证了结构，研究了反应条件．     

1,3-二苯基-4-乙酰基-5-吡唑酮合成方法的改进

采用价格仅是乙酰氯１／３的乙酸酐为酰化剂,并选用吡啶为溶剂兼缩合剂,替代二氧六环及氢氧化钙,合成１,３－二苯基－４－乙酰基－５－吡唑酮,在不减少得率的前提下,使制备成本大幅度降低,工艺更为简便     

糖苷合成研究（xv）2—苯硫基—5—氟—3H—4—嘧啶酮糖苷？…

采用相转移催化法和Ｋｏｅｎｉｇｓ－Ｋｎｏｏｒ反应,使乙酰基－α－Ｄ－溴代糖１与２－苯硫基－５－批－３Ｈ－４－嘧啶酮２（或其银眩盐４）反应,合成了５个相应的糖苷类化合物,其结构经ＩＲ、＾１ＨＮＭＲ和元素分析所证实。     

HPMBP与Phen衍生物对稀土的协同萃取研究

本文研究了1—苯基—3—甲基—4—苯甲酰基吡唑酮—5(HPMBP,HA)与1,10—菲咯啉(phen)及其衍生物(2,9—二甲基1,10—菲咯啉,DMphen;4,7—二苯基1,10—菲咯啉Bathophen的氧仿溶液对轻重稀土(Pr,Nd,Ho,Er)的协同萃取,用斜率法确定了各萃合物的组成均为REA_3B,(B代表phen或其衍生物)并求出了各稀土离子的协萃平衡常数Kse。结果说明,HPMBP与phen类双齿含氮中性萃取剂对稀土均有较强的协萃效应,但phen上取代基不同,协萃效果也不同,无论是轻或重稀土,其Kse均是Bathophen>phen>DMphen.Bathophen(下面用Bphen表示)的Kse要比phen的大4—10倍,而DMphen的则要比phen的小2—4个数量级。前者是由于增大了萃合物的共轭平面,所以稳定性增加,后者则是受空间位阻的影响,稳定性减小。用饱和萃取法制得了Ho·A_3·Bphen,元素分析结果,萃合物符合HoA_3·phen组成。同时测定了该萃合物的紫外、红外光谱。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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