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Metallaphotoredox-Catalyzed Three-Component Couplings for Practical Synthesis of Ureas and Carbamates

Chinese Journal of Chemistry 2024年第3期42卷 264-270页

作者： Ernest Koranteng Zhen-Cao Shu Yi-Yin Liu Qian Yang Bin Shi Qiang-Xian Wu fen tan Liang-Qiu Lu Wen-Jing Xiao Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction Ministry of EducationCollege of ChemistryCentral China Normal University152 Luoyu RoadWuhanHubei430079 China Wuhan Youji Industries Co. LtdNo.1 2nd Chemical Rd.WuhanHubei430082 China Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients School of Chemistry and Life SciencesHubei University of EducationWuhanHubei430205 China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouGansu730000 China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiangHenan453007 China Wuhan Institute of Photochemistry and Technology WuhanHubei430082 China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032 China

Ureas are widely used in drugs,materials and catalysts because of their diamide structure,which can form strong hydrogen ***,it is of great scientific significance to develop efficient and green methods for the synthesis of urea compounds,especially unsymmetrical ***,we have disclosed novel and highly efficient three-component coupling reactions of organic halides,sodium cyanate and amines enabled by nickel/photoredox dual catalysis for the preparation of unsymmetrical *** reaction features simple and safe operations,broad substrate scopes,and product *** allows the facile synthesis of N-aryl/vinyl ureas from readily available,user-friendly feedstocks under mild conditions(27 examples,36%—98%yields).In addition,this method is further derived to alcohols as nucleophiles to synthesize a series of carbamates(15 examples,40%—95%yields).The mechanism experiment shows that the isocyanate produced by the coupling of halide and sodium cyanate may be the key intermediate in this reaction.

关键词： Cross-coupling Nickel Photoredox catalysis Three-component reaction Ureas Carbamates

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神经内科重症监护室多重耐药菌感染预测模型构建

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中华医院感染学杂志 2024年第10期34卷 1575-1578页

作者：谭芬叶赵蓓陈亚男张广慧马亚利连云港市第一人民医院神经内科江苏连云港222002 连云港市第一人民医院感染管理科江苏连云港222002

目的分析多重耐药菌(MDR)感染在神经内科重症监护患者的发生情况及病原菌分布,并构建分险预测模型。方法纳入2020年1月-2023年1月连云港市第一人民医院神经内科重症监护室收治的598例患者进行研究,根据检出MDR情况,分为MDR感染组42例、... 详细信息

目的分析多重耐药菌(MDR)感染在神经内科重症监护患者的发生情况及病原菌分布,并构建分险预测模型。方法纳入2020年1月-2023年1月连云港市第一人民医院神经内科重症监护室收治的598例患者进行研究,根据检出MDR情况,分为MDR感染组42例、MDR未感染组556例,分析检出的MDR菌株分布及MDR感染的危险因素,构建预测模型并评估其预测效能。结果598例神经内科重症监护患者,共检出42株MDR,MDR感染发生率7.02%;高龄、留置导管、住院时间≥10 d、联合应用广谱抗菌药物为神经内科重症监护患者MDR感染的危险因素(P<0.05);据此构建的风险预测模型经Hosmer-Lemeshow拟合度检验结果显示,模型有较好的拟合优度(χ^(2)=5.785,P=0.671);校准曲线结果显示,预测概率与实际概率接近,提示模型具有良好的区分、校准和预测能力;受试者工作特征(ROC)曲线结果显示,曲线下面积(AUC)值为0.702,95%CI为0.616~0.788。模型诊断敏感度为70.00%,特异度为77.50%,提示模型区分度较好。结论神经内科重症监护患者MDR感染临床发生率较高,引起MDR感染危险因素较多,据筛选的危险因素构建的预测模型可为预防措施的制定提供依据。

关键词：神经内科重症监护室多重耐药菌危险因素预测模型列线图

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Homogeneous Light-Driven Catalytic Direct Carboxylation with CO2

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Chinese Journal of Chemistry 2018年第6期36卷 545-554页

作者： fen tan Guoyin Yin Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients Hubei University of Education Wuhan Hubei 430205 China The Institute for Advanced Studies Wuhan University Wuhan Hubei430072 China

Carbon dioxide is a ubiquitous and inexpensive one-carbon source for chemical synthesis, and the efficient incorporation of CO2 into organic molecules is of widespread research interest both for economic and ecological reasons. The methodologies to employ carbon dioxide as a single-carbon unit to construct molecules relevant for agrochemical and pharmaceutical research include many elegant approaches, including asymmetric transformations. Even though remarkable achievements have been made in the field of light-driven catalysis, especially photoredox catalysis, homogeneous light-driven catalytic carboxylation by employing CO2 as the key reagent has only become a subject of increasing attention in recent years. Therefore, this concise review will discuss the latest advances in this research area.

关键词： homogeneous catalysis photocatalysis green chemistry carboxylation carbon dioxide

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Rapid assembly of 1,3-indanedione-based spirocyclic tetrahydroquinolines for inducing human lung cancer cell apoptosis

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Green Synthesis and Catalysis 2022年第4期3卷 357-372页

作者： fen tan Luojia Chen Yuncong Yuan Xiaoyu He Yiwen Su Shuqiang Cao Conghua Xie Meijia Gu Youquan Zou Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversitySchool of Pharmaceutical SciencesWuhan UniversityWuhan 430071China Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients Hubei University of EducationWuhan 430205China Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of EducationWuhan UniversityWuhan 430071China Hubei Key Laboratory of Tumor Biological Behaviors Hubei Cancer Clinical Study CenterZhongnan Hospital of Wuhan UniversityWuhan 430071China TaiKang Center for Life and Medical Sciences Wuhan UniversityWuhan 430071China

The rapid collection of a library of biologically relevant molecules is essential in new drug *** we show a variety of bioactive 1,3-indanedione-based spirocyclic tetrahydroquinolines that have been concisely and efficiently constructed under the guidance of biology-oriented synthesis(BIOS).Using Pd(PPh_(3))_(4) as a catalyst,various 2-arylidene-1,3-indanediones can react with vinyl benzoxazinanones under the mild condition to afford a new class of spirocyclic tetrahydroquinolines in moderate to excellent yields(45%-99%)with high stereocontrol(>95:5 diastereoselectivity).Their structures were unambiguously confirmed by X-ray single crystal *** biological evaluation revealed that two of the 1,3-indanedione-based spirocyclic tetrahydroquinolines show remarkable apoptosis-inducing activities over A549 human lung cancer cells,exceeding that of *** antitur activities were triggered by reactive oxygen species,commonly overproduced in cancer *** clinical demand for antitumor chemotherapy for lung cancer has encouraged an all-out search for analogues with lower toxcity,improved therapeutic index and increased activity.

关键词： Spirocyclic tetrahydroquinoline 1,3-Indanedione Lung cancer Apoptosis Mitochondria

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APFA:Ameliorated Pathfinder Algorithm for Engineering Applications

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Journal of Bionic Engineering 2024年第3期21卷 1592-1616页

作者： Keyu Zhong fen Xiao Xieping Gao Key Laboratory of Computing and Stochastic Mathematics of Ministry of Education Hunan Normal UniversityChangsha410081China School of Mathematics and Statistics Hunan Normal UniversityChangsha410081China School of Computer Science Xiangtan UniversityXiangtan411105China Hunan Provincial Key Laboratory of Intelligent Computing and Language Information Processing Hunan Normal UniversityChangsha410081China

Pathfinder algorithm(PFA)is a swarm intelligent optimization algorithm inspired by the collective activity behavior of swarm animals,imitating the leader in the population to guide followers in finding the best food *** algorithm has the characteristics of a simple structure and high ***,PFA faces challenges such as insufficient population diversity and susceptibility to local optima due to its inability to effectively balance the exploration and exploitation *** paper proposes an Ameliorated Pathfinder Algorithm called APFA to solve complex engineering optimization ***,a guidance mechanism based on multiple elite individuals is presented to enhance the global search capability of the ***,to improve the exploration efficiency of the algorithm,the Logistic chaos mapping is introduced to help the algorithm find more high-quality potential solutions while avoiding the worst ***,a comprehensive following strategy is designed to avoid the algorithm falling into local optima and further improve the convergence *** three strategies achieve an effective balance between exploration and exploitation overall,thus improving the optimization performance of the *** performance evaluation,APFA is validated by the CEC2022 benchmark test set and five engineering optimization problems,and compared with the state-of-the-art metaheuristic *** numerical experimental results demonstrated the superiority of APFA.

关键词： Pathfinder algorithm Swarm intelligent Metaheuristic Engineering problems

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An Efficient Multi-objective Approach Based on Golden Jackal Search for Dynamic Economic Emission Dispatch

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Journal of Bionic Engineering 2024年第3期21卷 1541-1566页

Dynamic Economic Emission Dispatch(DEED)aims to optimize control over fuel cost and pollution emission,two conflicting objectives,by scheduling the output power of various units at specific *** many methods well-performed on the DEED problem,most of them fail to achieve expected results in practice due to a lack of effective trade-off mechanisms between the convergence and diversity of non-dominated optimal dispatching *** address this issue,a new multi-objective solver called Multi-Objective Golden Jackal Optimization(MOGJO)algorithm is proposed to cope with the DEED *** proposed algorithm first stores non-dominated optimal solutions found so far into an ***,it chooses the best dispatching solution from the archive as the leader through a selection mechanism designed based on elite selection strategy and Euclidean distance index *** mechanism can guide the algorithm to search for better dispatching solutions in the direction of reducing fuel costs and pollutant ***,the basic golden jackal optimization algorithm has the drawback of insufficient search,which hinders its ability to effectively discover more Pareto *** this end,a non-linear control parameter based on the cosine function is introduced to enhance global exploration of the dispatching space,thus improving the efficiency of finding the optimal dispatching *** proposed MOGJO is evaluated on the latest CEC benchmark test functions,and its superiority over the state-of-the-art multi-objective optimizers is highlighted by performance ***,empirical results on 5-unit,10-unit,IEEE 30-bus,and 30-unit systems show that the MOGJO can provide competitive compromise scheduling solutions compared to published DEED ***,in the analysis of the Pareto dominance relationship and the Euclidean distance index,the optimal dispatching solutions provided by MOGJO are the closest to the ideal solutions for minimizing fuel costs

关键词： Dynamic economic emission dispatch Multi-objective optimization Golden jackal Euclidean distance index

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New efficient synthesis of 2,5,6-trisubstituted oxazolo[5,4-d]pyrimidi-7(6H)-ones via an oxazolyliminophosphorane

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Chinese Chemical Letters 2015年第9期26卷 1158-1160页

作者： Guo-Ping Zeng Chang-Quan Cai fen tan Ming-Wu Ding Hubei Province Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients Hubei University of Education Key Laboratory of Pesticideε Chemical Biology of Ministry of Education Central China Normal University

A new efficient synthesis of 2,5,6-trisubstituted oxazolo（5,4-d]pyrimidi-7（6H）-ones by consecutive azaWittig reaction was *** sequential three-component reaction of oxazolyliminophosphorane4,isocyanates and amines produced 2,5,6-trisubstituted oxazolo[5,4-d]pyrimidi-7（6H）-ones 7 in good overall yields in the presence of catalytic amount of EtONa.

关键词： Oxazolo[5 4-d]pyrimidi-7( 6H)-one Aza-Wittig reaction Iminophosphorane Carbodiimide

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Weakly Supervised Network with Scribble-Supervised and Edge-Mask for Road Extraction from High-Resolution Remote Sensing Images

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Computers, Materials & Continua 2024年第4期79卷 549-562页

作者： Supeng Yu fen Huang Chengcheng Fan College of Artificial Intelligence Nanjing Agricultural UniversityNanjing210095China Innovation Academy for Microsatellites of CAS Shanghai201210China Shanghai Engineering Center for Microsatellites Shanghai201210China Key Laboratory of Satellite Digital Technology Shanghai201210China

Significant advancements have been achieved in road surface extraction based on high-resolution remote sensingimage processing. Most current methods rely on fully supervised learning, which necessitates enormous humaneffort to label the image. Within this field, other research endeavors utilize weakly supervised methods. Theseapproaches aim to reduce the expenses associated with annotation by leveraging sparsely annotated data, such asscribbles. This paper presents a novel technique called a weakly supervised network using scribble-supervised andedge-mask (WSSE-net). This network is a three-branch network architecture, whereby each branch is equippedwith a distinct decoder module dedicated to road extraction tasks. One of the branches is dedicated to generatingedge masks using edge detection algorithms and optimizing road edge details. The other two branches supervise themodel’s training by employing scribble labels and spreading scribble information throughout the image. To addressthe historical flaw that created pseudo-labels that are not updated with network training, we use mixup to blendprediction results dynamically and continually update new pseudo-labels to steer network training. Our solutiondemonstrates efficient operation by simultaneously considering both edge-mask aid and dynamic pseudo-labelsupport. The studies are conducted on three separate road datasets, which consist primarily of high-resolutionremote-sensing satellite photos and drone images. The experimental findings suggest that our methodologyperforms better than advanced scribble-supervised approaches and specific traditional fully supervised methods.

关键词： Semantic segmentation road extraction weakly supervised learning scribble supervision remote sensing image

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ZIF-8 modified by isocyanate as a photocatalytic antibacterial agent

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Rare Metals 2024年第6期43卷 2708-2718页

作者： Yi-Ning Zhang Zhen Pei Zi-Hao Wang Chong-En Wang fen-fen Liang Li-Qiao Wei College of Architecture Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Interface Science and Engineering in Advanced Materials of Taiyuan University of Technology Ministry of EducationTaiyuan 030024China Department of Materials Science and Engineering Shanxi Institute of TechnologyYangquan 045000China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030000China

Zeolite imidazole skeleton(ZIF-8)is a promising option for self-cleaning of building exterior walls due to its large specific surface area,high antibacterial activity and low ***,it suffers from low antibacterial efficiency and yield under visible light *** address the issues,we developed the photocatalytic materials T-ZIF-8-TDI(thermally treated-ZIF-8-toluene 2,4-diisocyanate)by modifying ZIF-8 with thermal oxygen sensitization and chemical *** results show that the yield of T-ZIF-8-TDI photocatalytic antibacterial agent is increased to 11.5 times of that of T-ZIF-8,while maintaining the crystal structure of T-ZIF-8 and thermal stability up to 60℃.Furthermore,T-ZIF-8-TDI exhibits extended optical response range to the nearinfrared region,significantly narrowed band gap,improved photogenerated elec tron-hole separation efficiency,reduced recombination rate,and excellent photocatalytic *** the concentration of antibacterial agent is 600 mg·L^(-1),the antibacterial rate of Escherichia coli(***)reaches 99.99%irradiated by visible light for30 min,and when the concentration of antibacterial agent is 200 mg·L^(-1),the antibacterial rate of Staphylococcus aureus(***)reaches 99.99%irradiated by visible light for 25 *** also analyzed the reasons in detail from the aspects of bacterial species and antibacterial mechanism,and proposed the antibacterial mechanism of·O_(2)^(-)and h^(+)as the main active *** findings suggest that T-ZIF-8-TDI photocatalytic antibacterial agent has potential for use in self-cleaning of building exterior walls.

关键词： ZIF-8 Hot oxygen sensitization Modified by isocyanate Antimicrobial performance Photocatalytic antibacterial mechanism

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Endoscopic ultrasound-guided lauromacrogol injection for treatment of colorectal cavernous hemangioma:Two case reports

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 966-973页

作者： Hua-Tuo Zhu Wen-Guo Chen Jing-Jie Wang Jia-Nan Guo fen-Ming Zhang Guo-Qiang Xu Hong-tan Chen Department of Gastroenterology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Colorectal cavernous hemangioma is a rare vascular malformation resulting in recurrent lower gastrointestinal hemorrhage,and can be misinterpreted as *** resection is currently the mainstay of treatment,with an emphasis on sphincter *** SUMMARY We present details of two young patients with a history of persistent hematochezia diagnosed with colorectal cavernous hemangioma by endoscopic ultrasound(EUS).Cavernous hemangioma was relieved by several EUS-guided lauromacrogol injections and the patients achieved favorable clinical *** Multiple sequential EUS-guided injections of lauromacrogol is a safe,effective,cost-efficient,and minimally invasive alternative for colorectal cavernous hemangioma.

关键词： Endoscopic ultrasound Lauromacrogol injection Colorectal cavernous hemangioma Case report

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