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Synthesis, Resolution, and Enantiomeric Purity Assay of 2-n-Butylbutanedioic Acid 4-t-Butyl Esters

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Chemical Research in Chinese Universities 2006年第5期22卷 584-588页

作者： ZHANG Da-tong TANG Li-da DUAN Gui-yun ZHAO Gui-long xu wei-ren MENG Li-juan WANG Jian-wu School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China The Pharmaceutical Research Institute of Tianjin Tianjin 300193 P. R. China

Racemic 2-n-butylbutanedioic acid 4-t-butyl esters were synthesized from methyl hexanoate and t-butyl α-iodoacetate via alkylation and subsequently selective hydrolyzation. The （R）-and （S）-2-n-butylbutanedioic acid 4-t-butyl esters were obtained by the resolution of the above-mentioned racemic compounds with（S）-（ - ） or（R）-（＋）-α- methylbenzylamine, respectively. The e.e. values of the two optical active products were determined to be above 99% by HPLC after the formation of two pairs of diastereoisomers with（R）-（＋）-α-methylbenzylamine and（S）- phenylalanine methyl ester.

关键词： Methyl hexanoate 4-t-Butyl 2-n-butylbutanedioic acid Resolution e.e. Value

Comparative Studies on the Stability of Various Forms of vitamin C

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中国水产科学 1995年第3期 42-48页

作者： Lei Qingxin, Li Aijie, xu wei, ren Zelin(Ocean University of Qingdao,266003)

ＣＯＭＰＡＲＡＴＩＶＥＳＴＵＤＩＥＳＯＮＴＨＥＳＴＡＢＩＬＩＴＹＯＦＶＡＲＩＯＵＳＦＯＲＭＳＯＦＶＩＴＡＭＩＮＣＬｅｉＱｉｎｇｘｉｎ，ＬｉＡｉｊｉｅ，ＸｕＷｅｉ，ＲｅｎＺｅｌｉｎ（ＯｃｅａｎＵｎｉｖｅｒｓｉｔｙｏｆ　... 详细信息

ＣＯＭＰＡＲＡＴＩＶＥＳＴＵＤＩＥＳＯＮＴＨＥＳＴＡＢＩＬＩＴＹＯＦＶＡＲＩＯＵＳＦＯＲＭＳＯＦＶＩＴＡＭＩＮＣＬｅｉＱｉｎｇｘｉｎ，ＬｉＡｉｊｉｅ，ＸｕＷｅｉ，ＲｅｎＺｅｌｉｎ（ＯｃｅａｎＵｎｉｖｅｒｓｉｔｙｏｆ　Ｑｉｎｇｄａｏ，２６６００３）ＣＯ...

关键词： Vitamin C L-ascorby1-2-polyphosphate Magnesium L-ascorby1-2-phosphate Potassium L-ascorby1-2-sulfate Stability

Effects of different structure ligands of TiCl3(OAr) for polymerization of ethylene:A density functional study

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Effects of different structure ligands of TiCl3(OAr) for pol...

羟丙基-β-环糊精对苯基丙烯酸类结构包合作用的理论研究

甘肃省化学会第二十九届年会

作者： XIE Ke-feng xu ren-wei ZHU Bo-chao LIU Peng Lanzhou Petrochemical Research Center Petrochina College of Chemistry and Chemical Engineering Lanzhou University

Although Ziegler-Natta(Z-N)catalysts were first discovered in 1953,more than 90%of the commercial manufacture of polyethylene and polypropylene is still based on modifications and improvements of the original Z-N *** ...

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来源： cnki会议评论

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中草药 2009年第4期40卷 558-562页

作者：王博任晓文徐为人王玮汤立达河南大学药学院河南开封475001 天津药物研究院天津市新药设计与发现重点实验室天津300193 天津药物研究院天津药代动力学与药效动力学省部共建国家重点实验室天津300193

目的研究不同的羟丙基取代模式对环糊精包合苯基丙烯酸类结构的影响。方法分别以β-环糊精和6位4取代的羟丙基-β-环糊精结构为受体,以各种不同羟基或甲氧基取代的苯基丙烯酸类结构为配体,在OPLAS2005分子力场下经过优化后,以对接方法... 详细信息

目的研究不同的羟丙基取代模式对环糊精包合苯基丙烯酸类结构的影响。方法分别以β-环糊精和6位4取代的羟丙基-β-环糊精结构为受体,以各种不同羟基或甲氧基取代的苯基丙烯酸类结构为配体,在OPLAS2005分子力场下经过优化后,以对接方法研究包合作用。结果β-环糊精结构中羟丙基分别在R1R2R3R4、R1R2R3R5、R1R2R4R5位取代时,有利于包合物的形成;羟丙基在R1R2R4R6位取代时,不利于包合物的形成。苯基丙烯酸结构中苯环上取代基数目越多、取代基分子越大,越不利于包合物的形成。结论羟丙基-β-环糊精羟丙基的取代位置和苯基丙烯酸母核结构上羟基取代位置的不同可以明显影响包合的形成和包合的方式。

关键词：羟丙基-β-环糊精苯基丙烯酸类包合作用理论研究

Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

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Nano-Micro Letters 2025年第1期17卷 262-280页

作者： Dongxiao Li Hong Zhou Zhihao ren Cheng xu Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy,but most of the resonant systems realized so far suffer from the obstacles of low sensitivity,narrow bandwidth,and asymmetric Fano resonance ***,we demonstrated an overcoupled resonator with a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by precisely controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asymmetric Fano *** characteristics represent a breakthrough in SEIRA technology and lay the foundation for specific recognition of biomolecules,trace detection,and protein secondary structure analysis using a single array(array size is 100×100μm^(2)).In addition,with the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction were achieved with the highest accuracy of 100%.Finally,we demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings will promote the wider application of SEIRA technology,while providing new ideas for other enhanced spectroscopy technologies,quantum photonics and studying light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

基于HIV蛋白酶结构的蘑菇氨酸结构的理论改造

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中草药 2007年第5期38卷 659-663页

作者：高维娜刘冰妮任晓文徐为人魏冬青天津师范大学天津300074 天津药物研究院天津300193

目的利用药物设计方法,从蘑菇氨酸的衍生物中寻找HIV蛋白酶结合能力更强的抑制剂。方法通过分子对接方法筛选了HIV-1蛋白酶晶体结构作用受体,并对蘑菇氨酸进行了理论改造。结果X1和X3位的改造是有利的,特别是以取代基11、12、13、14和1... 详细信息

目的利用药物设计方法,从蘑菇氨酸的衍生物中寻找HIV蛋白酶结合能力更强的抑制剂。方法通过分子对接方法筛选了HIV-1蛋白酶晶体结构作用受体,并对蘑菇氨酸进行了理论改造。结果X1和X3位的改造是有利的,特别是以取代基11、12、13、14和18进行取代加C部分改造成苯环后作用比较明显。结论药物分子改造发现了一些规律,有利于更好地寻找HIV-1蛋白酶抑制剂。

关键词： HIV蛋白酶蘑菇氨酸分子对接分子改造

Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie Wang wei Wang xuheng Chen Junfang Bao Qiuyue Hao Heng Zheng Runsheng xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

细胞色素P450(CYP450)遗传多态性研究进展

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中国药理学通报 2006年第12期22卷 1409-1414页

作者：成碟徐为人刘昌孝天津大学化工学院制药工程系天津300072 天津药物研究院药代动力学和药效动力学省部共建国家重点实验室天津300193

近年来对CYP450基因型和表型相关性的研究越来越受到重视,从临床合理用药方面来说,人们希望利用基因型分析来了解个体中药物代谢酶的活性,期望既能提高药物治疗水平同时又降低不良反应的发生;从新药研发角度来说,研究药物的代谢酶CYP45... 详细信息

近年来对CYP450基因型和表型相关性的研究越来越受到重视,从临床合理用药方面来说,人们希望利用基因型分析来了解个体中药物代谢酶的活性,期望既能提高药物治疗水平同时又降低不良反应的发生;从新药研发角度来说,研究药物的代谢酶CYP450的功能能够指导新药的设计、筛选及优化。该文通过查阅国内外相关文献综述了近年来关于CYP450遗传多态性研究的进展,分别介绍了CYP2C19、CYP2C9、CYP3A4、CYP2D6、CYP1A2和CYP2E1这6种主要的药物代谢酶。研究CYP450对新药设计、筛选、评价及优化有重要意义。

关键词：细胞色素P450 CYP450 遗传多态性 CYP2C19 CYP2C9 CYP3A4 CYP2D6 CYP1A2 CYP2E1

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen Xin Zhang Lingcong Chao Liang Chen Ding Zhang Tao wei Shoudong xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added