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Synthesis of 1,2-Dioxane Type Antimalarial Peroxides

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Chinese Journal of chemistry 2006年第9期24卷 1180-1189页

作者：刘鹤华张琦金红霞沈鑫伍贻康 State key laboratory of bio-organic and Natural Products chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

Synthesis of five simple analogues of peroxyplakoric acid by using Kobayashi＇s method to construct the key 1,2-dioxane core is detailed.

关键词： peroxide cyclization hemiketal antimalarial

Structure determination of glycopeptide of β-momorcharin

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Chinese Journal of chemistry 1999年第5期17卷 516-525,427页

作者：李一莉马侃吴厚铭叶国杰金善炜汪猷 State key laboratory of bio-organic and Natural Products chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

The structure of the N-linked oligosaccharide chain of β-momorcharin, a ribosome-inactivating protein from the seeds of Momordica charantia Linn (Cucurbitaceae), was determined. A glycopeptide liberated by pronase digestion of the glycoprotein was subjected to amino acid and neutral carbohydrate analysis to establish the composition of amino acid and sugar residues. The sequences and glycosylation hnkages of the sugar and amino acid residues in the glycopeptide were determined as Manαl-6(XyIβ1-2)-Manβ1-4GlcNAcβ1-4(Fucαl-3)-GlcNAc-Asn-Leu by 2D-NMR spectroscopy and FAB-MS data.

关键词： β-Momorcharin ribosome-inactivating protein structure of glycopeptide.

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Synthesis of a Nitro Analogue of Plakoric Acid

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Chinese Journal of chemistry 2006年第9期24卷 1190-1195页

作者：张琦金红霞刘鹤华伍贻康 State key laboratory of bio-organic and Natural Products chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

Synthesis of a nitro analogue of plakoric acid is presented. The peroxy bond was incorporated into the substrate structure through a boron trifluoride etherate catalyzed methoxy-hydroperoxy group partial exchange reaction in diethyl ether with urea-hydrogen peroxide complex （UHP, a commercially available solid reagent） as the source of the hydrogen peroxide. Under the given conditions, only one of the two methoxyl groups underwent the MeO—— OOH exchange and the resulting hydroperoxy hemiketal proceeded directly to the end product through an intramolecular Michael addition of the hydroperoxyl group to the nitro group activated carbon-carbon double bond.

关键词： peroxide cyclization hemiketal exchange antimalarial

Facile and Efficient Asymmetric Synthesis of α-Aminoalkylphosphonic Acids

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Chinese Journal of chemistry 2005年第12期23卷 1671-1676页

作者：袁承业陈谦益 State key laboratory of bio-organic and Natural Products chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

An improved procedure for the asymmetric synthesis of α-aminoalkylphosphonic acids using S-2-anilinomethylpyrrolidine as the chiral auxiliary was described. The chemical transformations involved in this protocol coul... 详细信息

关键词： aminophosphonic acid anilinomethylpyrrolidine asymmetric synthesis

Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang Guo Di Lan Zirui Jia Zhenguo Gao Xuetao Shi Mukun He Hua Guo Guanglei Wu Pengfei Yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi key laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection

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基于共价有机框架的分子工程高效光催化CO2还原为CO（英文）

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Science China Materials 2025年第1期 165-172页

作者：赵文玲孙磊杨丽张瑞玲任国庆王森吴昊康欣晨邓伟侨刘乘乘 Institute of Frontier chemistry School of Chemistry and Chemical Engineering Shandong University Beijing National laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and Thermodynamics Institute of Chemistry Chinese Academy of Sciences College of chemistry Chemical Engineering and Resource Utilization Northeast Forestry University State key laboratory of Microbial Technology Shandong University

共价有机框架广泛应用于光催化CO2还原中.然而,它们在分离光生载流子方面的效率有限,且催化位点较少,因此其光催化性能有待提高.本文利用分子工程设计了一种芘基共价有机框架（PyTa-H COF）,并将钴单原子（Co SACs）负载在COF骨架中用...

共价有机框架广泛应用于光催化CO2还原中.然而,它们在分离光生载流子方面的效率有限,且催化位点较少,因此其光催化性能有待提高.本文利用分子工程设计了一种芘基共价有机框架（PyTa-H COF）,并将钴单原子（Co SACs）负载在COF骨架中用于二氧化碳还原.在COF中,芘基团可以增强可见光捕获能力和电荷分离能力, Co SACs可以加速光生载流子的迁移及降低决速步的反应能垒.在可见光照射下,PyTa-H@Co在4小时内的CO产率为18.36 mmol g-1h-1,选择性为94%,其性能与目前报道的COFs的最佳性能相当.密度泛函理论计算表明,Co SACs稳定了*COOH中间体,并大大降低了决定性步骤的能垒,从而获得了优异的光催化性能.本工作通过分子工程设计,突出了催化剂结构和功能在提高光催化效率方面的重要作用.

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China chemistry 2025年第01期 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao key laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay laboratory State key laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State key laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan key laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

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Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan Qi Biao Shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University key laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

Synthesis of C-Aryl-flavonoid Derivatives via Suzuki-Miyaura Coupling Reaction

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Chinese Journal of chemistry 2006年第9期24卷 1154-1162页

作者：彭文杰韩秀文俞飚 State key laboratory of bio-organic and Natural Products chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China State key laboratory of Catalyst Dalian Institute of Chemical Physics Chinese Academy of Sciences. Daliam Liaoning 116023 China

A variety of 4＇- and 3-C-aryl-quercetin derivatives were conveniently synthesized via Suzuki-Miyaura coupling of the corresponding quercetin-O-triflates with aryl boronic acids or boronates.

关键词： Suzuki-Miyaura reaction quercetin synthesis flavonoid