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Ruthenium(Ⅲ) chloride as an efficient catalyst for the synthesis of perimidine derivatives under mild conditions

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Chinese Chemical Letters 2007年第9期18卷 1057-1060页

作者： Jing zhang song lin zhang Jun Min zhang Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry and Chemical EngineeringDushu Lake CampusSuzhou UniversitySuzhou 215123China College of Chemistry and Environmental Science Henan Normal UniversityXinxiang 453007China

Various biologically important perimidine derivatives have been synthesized efficiently from various ketones and naphthalene- 1,8-diamine by using a catalytic amount of RuCl_3(1 mol%).This method is a very simple and ... 详细信息

关键词： Ruthenium(Ⅲ)chloride Pedmidine derivatives Naphthalene-1,8-diamine Synthesis Catalyst

Life Prediction Based on Transient Dynamics Analysis of Van Semi-trailer with Air Suspension System

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Chinese Journal of Mechanical Engineering 2011年第3期24卷 372-379页

作者： LI Liang song Jian HE lin zhang Mengjun LI Hongzhi State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing 100084 China

The early fatigue damage in the van-body of the semi-trailer is often caused by the unique mechanical characteristics and the dynamic impact of the *** traditional finite element method with static strength analysis cannot support the fatigue design of van-body;thus,the dynamics analysis should be adopted for the endurance *** accurate dynamics model to describe the transient impacts of all kinds of uneven road and the proper system transfer functions to calculate the load transfer effects from tire to van-body are two critical factors for transient dynamics *** order to evaluate the dynamic performance,the dynamics model of the trailer with the air suspension is brought *** the analysis method of the power spectral density （PSD） is set up to study the transient responses of the road dynamic *** transient responses transferred from axles to van-body are calculated,such as dynamic stress,dynamic RMS acceleration,and dynamic load *** on the above dynamic responses,the fatigue life of van-body is predicted with the finite element analysis （FEA） *** the test parameters of the trailer with air suspension,the simulation system with Matlab/Simulink is constructed to describe the dynamic responses of the impacts of the tested PSD of the vehicle axles,and then the fatigue life is predicted with FEA *** simulated results show that the vibration level of the van-body with air suspension is reduced and the fatigue life is *** real vehicle tests on different roads are carried out,and the test results validate the accuracy of the simulation *** proposed fatigue life prediction method is effective for the virtual design of auto-body.

关键词： van-body air suspension system transient dynamics power spectral density (PSD) life prediction

Zn/ ZrCl_4 System Induced Reductive Cleavage of Se-Se Bond in Diaryl Diselenides: A Novel Method for the Systhesis of Selenoesters

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Chinese Chemical Letters 2002年第1期13卷 9-12页

作者： song lin zhang Feng Shou TIAN Gong An LI Yu Lu WANG College of Chemistry and Environmental Science Henan Normal University Xinxiang 453002

The Se-Se bond in diaryl diselenides was reduced by Zn/ZrCl4 system to produce selenide anions, which react with acyl chlorides or acid anhydrides to afford selenoesters in THF under mild and neutral conditions.

关键词： Diselenides zinc zirconium (IV) chloride selenoesters.

Metal–Organic Framework-Assisted Synthesis of Compact Fe_2O_3 Nanotubes in Co_3O_4 Host with Enhanced Lithium Storage Properties

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Nano-Micro Letters 2018年第3期10卷 70-78页

作者： song lin zhang Bu Yuan Guan Hao Bin Wu Xiong Wen David Lou School of Chemical and Biomedical Engineering Nanyang Technological University School of Materials Science and Engineering Zhejiang University

Transition metal oxides are promising candidates for the high-capacity anode material in lithium-ion *** electrochemical performance of transition metal oxides can be improved by constructing suitable composite architectures. Herein, we demonstrate a metal–organic framework(MOF)-assisted strategy for the synthesis of a hierarchical hybrid nanostructure composed of Fe_2O_3 nanotubes assembled in Co_3O_4 host. Starting from MOF composite precursors(Fe-based MOF encapsulated in a Cobased host matrix), a complex structure of Co_3O_4 host and engulfed Fe_2O_3 nanotubes was prepared by a simple annealing treatment in air. By virtue of their structural and compositional features, these hierarchical composite particles reveal enhanced lithium storage properties when employed as anodes for lithium-ion batteries.

关键词： Metal–organic framework(MOF) Hierarchical structures Fe2O3 nanotubes Co3O4 Lithium-ion batteries(LIBs)

Cu-catalyzed arylation of phosphinic amide facilitated by (±)-trans-cyclohexane-1,2-diamine

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Chinese Chemical Letters 2007年第9期18卷 1033-1036页

作者： Juan Li song lin zhang Chuan Zhou Tao Yao Fu Qing Xiang Guo Department of Chemistry University of Science and Technology of China Hefei 230026 China

Cu-catalyzed cross coupling between phosphinic amides and aryl halides was accomplished for the first time by using (±)-trans-cyclohexane-1,2-diamine as the ligand. This reaction provided a novel approach for synthesizing arylated phosphinic amides. Both kinetic measurement and theoretical calculation indicated that phosphinic amides were much less reactive than amides by about 10 times in Cu-catalyzed cross coupling.

关键词： Phosphinic amide Copper Catalyst Cross coupling

Samarium Diiodide-Induced Reductive Cleavage of Se-St Bond in Arylselenotrimethylsilane Leading to the Formation of Samarium Arylselenolate: Synthesis of β-Arylseleno Estsrs and β-Arylseleno Nitriles

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Chinese Chemical Letters 1998年第10期9卷 885-887页

作者： song lin zhang and Yong Min zhang(Department of Chemistry, Hangzhou University, Hangzhou, 310028)

The Se-St bond in arylselenotrimethylsilane was reduced by samarium diiodide to produce samarium arylselenolate, which reacted with a,β-unsaturated esters or α,β-unsaturated nitriles to give β-selenoesters and β-... 详细信息

关键词： samarium diiodide arylselenotrimethylsilane arylseleno esters arylseleno nitriles

SELECTIVE INDIRECTIVE ELECTROOXIDATION OF THE SIDE CHAIN OF AROMATIC COMPOUNDS

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Chinese Chemical Letters 1992年第8期3卷 595-596页

作者： song lin zhang Gui Lan WANG Zhi Hong LI Kun CAI Department Of Chemistry Henan Normal University Xinxiang 453002

This paper describes the indirect electrooxidation of the side chain of aromatic com. pounds with a Ce(Ⅳ)/Ce(Ⅲ)redox *** reaction has the following advantages:favourable selectivity,high yield,nonpollution and economy.

关键词： Th

Antitumor effects of mutant endostatin are enhanced by Bcl-2 antisense oligonucleotides in UM-UC-3 bladder cancer cell line

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Chinese Medical Journal 2013年第15期126卷 2834-2839页

作者： REN Ming-hua YU Jing-song song Er-lin zhang Cheng MA Li JIAO Zhi-xing ZHAO Wei-ming SHAN Yu-juan NI Shao-bin Harbin Med Univ Affiliated Hosp 1 Dept Urinary Surg Harbin 150001 Heilongjiang Peoples R China Chinese Peoples Liberat Army Hosp 211 Dept Urinary Surg Harbin 150080 Heilongjiang Peoples R China Harbin Inst Technol Food Sci & Engn Sch Harbin 150090 Heilongjiang Peoples R China

Background Endostatin is a potent inhibitor of tumor angiogenesis. In the preliminary studies, we developed a mutant endostatin containing Arg-Gly-Asp-Arg-Gly-Asp （RGDRGD） sequences. In this study, we compared the antitumor effects of mutant endostatin and Bcl-2 antisense oligonucleotides both in combination and individually. Methods The artificially synthesized Bcl-2 ASODN （antisense oligonucleotides） included a translation-initiation site and was transfected into the bladder cancer cells by Lipofectamine. Cell growth was investigated by the tumor cell growth chart, MTT assay, caspase-3 activity detection assay, AO/EB fluorescein stain, and the annexin V-FITC apoptosis detection assay. In the in vivo study, UM-UC-3 bladder cancer cells were subcutaneously implanted into nude mice and the growth of tumor was examined. The ultrastructure of the tumor tissues in the treated and control groups were observed. Results The cell growth chart showed that the cell population of the treated combination group decreased by 52.04% compared to the control group. The inhibition rate of the treated combination group was （79.66＋6.79）%, whereas those of the individual ASODN and ES groups were （53.39＋3.22）% and （50.22＋5.46）% respectively. In the caspase-3 activity detection using AO/EB fluorescein stain and annexin V-FITC apoptosis detection assay, the co-inhibitory effect was higher than the individual inhibitory effects （P〈0.05）. There were significant differences in the inhibition of the solid tumor growth in the in vivo study. Conclusions Our findings indicated that Bcl-2 antisense oligonucleotides enhance the antitumor effects of mutant endostatin both in vitro and in vivo. We noted the synergistic effects of Bcl-2 antisense oligonucleotides combined with mutant endostatin.

关键词： endostatin Bcl-2 antisense oligonucleotides Arg-Gly-Asp

动态增强磁共振与扩散张量成像对前列腺中央区良恶性结节的诊断价值

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中国医学影像学杂志 2017年第7期25卷 550-554页

作者：宋惠贞张林石河子大学医学院第一附属医院MR室新疆石河子832000 西南医科大学附属医院放射科四川泸州646000

目的研究动态增强磁共振扫描(DCE-MRI)、扩散张量成像(DTI)及两者联合对前列腺中央区良恶性结节的诊断价值。资料与方法回顾性分析2015年9月-2016年12月在石河子大学医学院第一附属医院行前列腺MRI扫描的49例前列腺中央区有结节样异常... 详细信息

目的研究动态增强磁共振扫描(DCE-MRI)、扩散张量成像(DTI)及两者联合对前列腺中央区良恶性结节的诊断价值。资料与方法回顾性分析2015年9月-2016年12月在石河子大学医学院第一附属医院行前列腺MRI扫描的49例前列腺中央区有结节样异常信号患者,均行磁共振T2WI、DTI及DCE扫描。经病理学证实,57例中央区结节样本中21例为前列腺癌(PCa)、36例为良性前列腺增生(BPH)。分别测量结节的各向异性分数值、表观扩散系数值、峰值时间、强化率、曲线斜率值,描述时间-信号强度曲线,比较各参数在PCa与BPH之间的差异,并进行受试者工作特性(ROC)曲线分析。结果 PCa组与BPH组的各向异性分数值、表观扩散系数值、峰值时间、曲线斜率值差异均有统计学意义(P0.05);PCa的时间-信号强度曲线类型以速升下降型为主,BPH曲线类型以平台型为主。DCE、DTI及两者联合诊断的ROC曲线下面积分别为0.87(95%CI:0.751~0.942)、0.85(95%CI:0.734~0.933)和0.94(95%CI:0.837~0.983)。结论与DTI及DCE分别诊断前列腺中央区良恶性结节相比,两者联合诊断具有更高的准确性。

关键词：前列腺肿瘤磁共振成像扩散张量成像图像增强病理学,外科诊断,鉴别