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Ni L, Zhao J, Song H, Zhang Z, Feng J, Xu Y, Noda I. Application of two-dimensional correlation fluorescence spectroscopy to detect the presence of trace amount of substances. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118374. [PMID: 32334325 DOI: 10.1016/j.saa.2020.118374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Although fluorescence spectroscopy is a highly sensitive method, it is still rather difficult to identify a minor fluorescent component whose fluorescent peak is overlapped and masked by a dominant fluorescent component in a sample solution. Herein, we describe a two-dimensional correlation spectroscopy (2D-COS) approach based on the Kasha's rule to solve the above common problem. We initially suppose that a sample solution contains the major component only, and the spectral behavior of the major component obeys the Kasha's rule. Then, the shapes of emission spectra obtained under excitation lights of different wavelengths remain invariant. Under this condition, the introduction of a minor fluorescent component can be reflected by the changes on the shapes of emission peaks in the series of emission spectra. Moreover, subtle changes, which are difficult to be found in the original spectra, can be clearly visualized as cross peaks in 2D asynchronous spectrum constructed using a series of emission spectra. In addition, we demonstrate that the intensities of cross peaks can be enhanced by changing the sequence of the series of emission spectra. We utilize the approach on an aqueous solution containing eosin Y and a trace amount of bromocresol green. The presence of bromocresol green with the concentration as low as 400 nM can be revealed via the cross peaks in the resultant 2D asynchronous spectra. In a preliminary study, we suggest that 2D disrelation spectrum might provide an alternative chance to reveal the presence of small amount bromocresol green.
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Affiliation(s)
- Lei Ni
- School of Life Science and Technology, University of Electronic Science and Technology, Chengdu, Sichuan 610054, PR China; Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China; Jiangsu JITRI Molecular Engineering Inst. Co., Ltd., Suzhou, Jiangsu 215500, PR China
| | - Jiaojiao Zhao
- School of Life Science and Technology, University of Electronic Science and Technology, Chengdu, Sichuan 610054, PR China
| | - Honghong Song
- School of Life Science and Technology, University of Electronic Science and Technology, Chengdu, Sichuan 610054, PR China; Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Zhuoyue Zhang
- School of Life Science and Technology, University of Electronic Science and Technology, Chengdu, Sichuan 610054, PR China
| | - Juan Feng
- School of Life Science and Technology, University of Electronic Science and Technology, Chengdu, Sichuan 610054, PR China.
| | - Yizhuang Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China; Jiangsu JITRI Molecular Engineering Inst. Co., Ltd., Suzhou, Jiangsu 215500, PR China.
| | - Isao Noda
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China; Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, United States
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2
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Mayooufi A, Romdhani-Younes M, Carcenac Y, Thibonnet J. Easy installation of 1,2,3-triazoles or iodo-1,2,3-triazoles onto indole-fused oxazinones via CuAAC-based MCR in the presence of 18-crown-6. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1611857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- A. Mayooufi
- Laboratoire Synthèse et Isolement de Molécules BioActives (SIMBA), Faculté des Sciences et Techniques, Université de Tours, Tours, France
- Laboratoire de Chimie Organique Structurale et Macromoléculaire, Département de Chimie, Faculté des Sciences de Tunis, Campus Universitaire El-Manar, Tunis, Tunisie
| | - M. Romdhani-Younes
- Laboratoire de Chimie Organique Structurale et Macromoléculaire, Département de Chimie, Faculté des Sciences de Tunis, Campus Universitaire El-Manar, Tunis, Tunisie
| | - Y. Carcenac
- Laboratoire Synthèse et Isolement de Molécules BioActives (SIMBA), Faculté des Sciences et Techniques, Université de Tours, Tours, France
| | - J. Thibonnet
- Laboratoire Synthèse et Isolement de Molécules BioActives (SIMBA), Faculté des Sciences et Techniques, Université de Tours, Tours, France
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3
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Ansari A, Ramapanicker R. Enantioselective Synthesis of (R)-Antofine and (R)-Cryptopleurine. ChemistrySelect 2018. [DOI: 10.1002/slct.201803529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anas Ansari
- Department of Chemistry; Indian Institute of Technology Kanpur Kanpur; Uttar Pradesh- 208016 India
| | - Ramesh Ramapanicker
- Department of Chemistry; Indian Institute of Technology Kanpur Kanpur; Uttar Pradesh- 208016 India
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4
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Zhang XM, Tu YQ, Zhang FM, Chen ZH, Wang SH. Recent applications of the 1,2-carbon atom migration strategy in complex natural product total synthesis. Chem Soc Rev 2018; 46:2272-2305. [PMID: 28349159 DOI: 10.1039/c6cs00935b] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
1,2-Carbon atom rearrangement has been broadly applied as a guiding strategy in complex molecule assembly. As it entails the carbon-carbon or carbon-heteroatom bond migration between two vicinal atoms, this type of reaction is capable of generating structural complexity through a molecular skeletal reorganization. This review will focus on recent employment of this strategy in the total synthesis of natural products, highlighting the exceptional utility of such synthetic methodologies in the construction of intricate carbocycles, heterocycles or structurally complex motifs from synthetically more accessible precursors.
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Affiliation(s)
- Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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5
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Li R, Liu CF, Yu CJ, Gu P. Total synthesis of ( R )-tylophorine by using an asymmetric hydrogenation of the allyl alcohol. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Takasu K, Yamaoka Y, Taniguchi M, Yamada KI. Total Synthesis of Phenanthroquinolizidine Alkaloid Cryptopleurine and Phenanthroindolizidine Alkaloid Tylophorine. HETEROCYCLES 2018. [DOI: 10.3987/com-18-s(t)19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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7
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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Advances in the Chemistry of Natural and Semisynthetic Topoisomerase I/II Inhibitors. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63929-5.00002-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part II: applications as versatile intermediates in alkaloid synthesis. Chem Commun (Camb) 2016; 51:16450-67. [PMID: 26490499 DOI: 10.1039/c5cc05892a] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among many other strategies, the enaminone approach is an important strategy to construct and diversify the azacyclic core in various alkaloids syntheses. In this brief review we discuss the application of cyclic enaminones as building blocks, as well as potential intermediates in the total synthesis of selected alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
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Xie S, Ramström O, Yan M. N,N-diethylurea-catalyzed amidation between electron-deficient aryl azides and phenylacetaldehydes. Org Lett 2015; 17:636-9. [PMID: 25616121 DOI: 10.1021/ol503655a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Urea structures, of which N,N-diethylurea (DEU) proved to be the most efficient, were discovered to catalyze amidation reactions between electron-deficient aryl azides and phenylacetaldehydes. Experimental data support 1,3-dipolar cycloaddition between DEU-activated enols and electrophilic phenyl azides, especially perfluoroaryl azides, followed by rearrangement of the triazoline intermediate. The activation of the aldehyde under near-neutral conditions was of special importance in inhibiting dehydration/aromatization of the triazoline intermediate, thus promoting the rearrangement to form aryl amides.
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Affiliation(s)
- Sheng Xie
- Department of Chemistry, KTH - Royal Institute of Technology , Teknikringen 36, Stockholm, Sweden
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11
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Wang BJ, Xue P, Gu P. Intramolecular Schmidt reaction of acyl chlorides with alkyl azides: preparation of pyrrolizine by intramolecular capture of intermediates with alkenes or alkynes. Chem Commun (Camb) 2015; 51:2277-9. [DOI: 10.1039/c4cc07166b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Intramolecular capture of the intermediates from the Schmidt reaction of acyl chlorides with alkenes or alkynes has been realized.
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Affiliation(s)
- Bao-Juan Wang
- Key Laboratory of Energy Sources & Engineering
- State Key Laboratory Cultivation Base of Natural Gas Conversion and Department of Chemistry
- Ningxia University
- Yinchuan 750021
- China
| | - Ping Xue
- Key Laboratory of Energy Sources & Engineering
- State Key Laboratory Cultivation Base of Natural Gas Conversion and Department of Chemistry
- Ningxia University
- Yinchuan 750021
- China
| | - Peiming Gu
- Key Laboratory of Energy Sources & Engineering
- State Key Laboratory Cultivation Base of Natural Gas Conversion and Department of Chemistry
- Ningxia University
- Yinchuan 750021
- China
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12
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Kwon Y, Kim I, Kim S. Platinum-Catalyzed Synthesis of Substituted Phenanthrenes from Biphenyl Propargyl Alcohols via a Carbene Intermediate. Org Lett 2014; 16:4936-9. [DOI: 10.1021/ol502465e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yongseok Kwon
- College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Illan Kim
- College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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