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Atroposelective Synthesis of 3-Aryl-Indoles Through a One-Pot 2,3-Difunctionalization of Simple Indoles
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作者 Lei Dai Yu-Li Sun +3 位作者 Jiami Guo xueting zhou Qingqin Huang Yixin Lu 《CCS Chemistry》 CSCD 2024年第7期1672-1680,共9页
Indole and its derivatives represent the most important heterocycles that are widely present in bioactive molecules,natural products and advanced materials,and thus functionalization of simple indoles to construct com... Indole and its derivatives represent the most important heterocycles that are widely present in bioactive molecules,natural products and advanced materials,and thus functionalization of simple indoles to construct complex indole derivatives is a research area of great current interest.2,3-Difunctionalization of indoles has been extensively studied,but the reported examples are limited to the synthesis of 2,3-disubstituted indole derivatives or dearomatized products containing central chirality.Until now,atroposelective 2,3-difunctionalization of simple indoles for the synthesis of axially chiral molecules is unknown.In this article,we report a straightforward and general strategy for atroposelective 2,3-difunctionalization of simple indoles,forming indole-containing axially chiral products in good yields and excellent enantioselectivities.The strategy we introduce herein may lead to the discovery of new approaches for multifunctionalization of indoles and other heterocyclic scaffolds,thus accessing novel axially chiral heteroarene-containing scaffolds that may find applications in medicinal chemistry and asymmetric catalysis. 展开更多
关键词 axial chirality atroposelectivity sequential catalysis difunctionalization of indoles chiral phosphoric acid
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Light-induced phosphine-catalyzed asymmetric functionalization of benzylic C–H bonds 被引量:1
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作者 Jiami Guo Zi-An Shen +2 位作者 xueting zhou Lei Dai Yixin Lu 《Science China Chemistry》 SCIE EI CAS CSCD 2023年第1期127-132,共6页
Despite rapid development in the past two decades,there are still some unsolved synthetic challenges in the field of phosphine catalysis.In this report,through photo-induced activation of ortho-alkyl aromatic ketones,... Despite rapid development in the past two decades,there are still some unsolved synthetic challenges in the field of phosphine catalysis.In this report,through photo-induced activation of ortho-alkyl aromatic ketones,we achieved highly enantioselective functionalization of substrates bearing a benzylic C–H bond.In the presence of amino acid-derived bifunctional phosphine catalysts,a range of benzylic allylation products were obtained in good yields and with excellent enantioselectivities.The strategy disclosed herein offers new insight into the activation and functionalization of pronucleophiles containing less acidic C–H bonds in the domain of phosphine catalysis and beyond. 展开更多
关键词 phosphine catalysis nucleophilc catalysis ENANTIOSELECTIVE benzylic C-H bonds
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Mesoporous silica rods with cone shaped pores modulate inflammation and deliver BMP-2 for bone regeneration 被引量:6
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作者 Chun Xu Lan Xiao +8 位作者 Yuxue Cao Yan He Chang Lei Yin Xiao Wujin Sun Samad Ahadian xueting zhou Ali Khademhosseini Qingsong Ye 《Nano Research》 SCIE EI CAS CSCD 2020年第9期2323-2331,共9页
Biomaterials with suitable osteoimmunomodulation properties and ability to deliver osteoinductive biomolecules,such as bone morphogenetic proteins,are desired for bone regeneration.Herein,we report the development of ... Biomaterials with suitable osteoimmunomodulation properties and ability to deliver osteoinductive biomolecules,such as bone morphogenetic proteins,are desired for bone regeneration.Herein,we report the development of mesoporous silica rods with large cone-shaped pores(MSR-CP)to load and deliver large protein drugs.It is noted that those cone-shaped pores on the surface modulated the immune response and reduced the pro-inflammatory reaction of stimulated macrophage.Furthermore,bone morphogenetic proteins 2(BMP-2)loaded MSR-CP facilitated osteogenic differentiation and promoted osteogenesis of bone marrow stromal cells.In vivo tests confirmed BMP-2 loaded MSR-CP improved the bone regeneration performance.This study provides a potential strategy for the design of drug delivery systems for bone regeneration. 展开更多
关键词 mesoporous silica rod bone regeneration cone shaped pores morphogenetic proteins 2(BMP-2)delivery osteoimmunomodulation
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Power Fluctuation Damping of Thermostatically Controlled Loads Based on State Estimation 被引量:3
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作者 Yuqing Bao xueting zhou +3 位作者 Tongzhou Ji Jinlong Zhang Xiaobo Tang Yang Wu 《CSEE Journal of Power and Energy Systems》 SCIE CSCD 2020年第4期834-840,共7页
As a kind of important demand side resource,the thermostatically controlled loads(TCLs)play an important role in the peak load shifting and load balancing programs.This paper establishes a state-queuing(SQ)model for t... As a kind of important demand side resource,the thermostatically controlled loads(TCLs)play an important role in the peak load shifting and load balancing programs.This paper establishes a state-queuing(SQ)model for the large-scale TCLs,and estimates the system states based on the Kalman-filtering.Based on state estimation,the control strategy,whose parameters are optimized by the genetic algorithm(GA),is designed to damp the power fluctuation of the TCLs.Finally,the effectiveness of the proposed method is verified. 展开更多
关键词 Genetic algorithm Kalman filter state-queuing model state estimation thermostatically controlled loads
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