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Qin M, Qian Y, Huang L, Zhong C, Li M, Yu J, Chen H. Extractive electrospray ionization mass spectrometry for analytical evaluation and synthetic preparation of pharmaceutical chemicals. Front Pharmacol 2023; 14:1110900. [PMID: 36713836 PMCID: PMC9880169 DOI: 10.3389/fphar.2023.1110900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/03/2023] [Indexed: 01/15/2023] Open
Abstract
Extraction electrospray ionization mass spectrometry (EESI-MS), due to the unique configuration of its ionization module, enables the effective ionization of trace molecules of interest in samples containing complex matrices with high sensitivity, high selectivity and high responding speed without requiring sample pretreatment, and allows high-energy molecular species to undergo specially designed reactions for advanced functionalization. The typical effects of operating conditions on the analytical performance of extraction electrospray ionization mass spectrometry for various pharmaceutical compounds, pharmaceutical preparations and herbal materials were systematically reviewed. The application prospect of extraction electrospray ionization in molecular functionalization for advanced drug discovery is also briefly introduced.
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Affiliation(s)
- Manman Qin
- Mass Spectrometry Laboratory for BioSample Analysis, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Key Laboratory for Pharmacology and Translational Research of Traditional Chinese Medicine of Nanchang, Centre for Translational Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Jiangxi Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Vascular Remodeling Diseases, Nanchang, Jiangxi, China
| | - Yuqing Qian
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Lu Huang
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Chao Zhong
- Key Laboratory for Pharmacology and Translational Research of Traditional Chinese Medicine of Nanchang, Centre for Translational Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Jiangxi Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Vascular Remodeling Diseases, Nanchang, Jiangxi, China
| | - Mingdong Li
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Jun Yu
- Department of Cardiovascular Sciences and Centre for Metabolic Disease Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Huanwen Chen
- Mass Spectrometry Laboratory for BioSample Analysis, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,*Correspondence: Huanwen Chen,
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Meng Y, Gnanamani E, Zare RN. Catalyst-Free Decarboxylative Amination of Carboxylic Acids in Water Microdroplets. J Am Chem Soc 2023; 145:32-36. [PMID: 36566437 DOI: 10.1021/jacs.2c12236] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Previous studies have shown that hydroxyl radicals can be formed at the water-gas surface of water microdroplets. We report the use of in situ generated hydroxyl radicals to carry out an organic transformation in one step, namely, the formation of anilines from aryl acids as well as both ammonia and primary/secondary amines via decarboxylation. Benzoic acids and amines are dissolved in water, and the solution is sprayed to form microdroplets whose chemical contents are analyzed mass spectrometrically. All intermediates and products are determined using mass spectrometry (MS) as well as in some cases tandem mass spectrometry (MS2). These results support the following reaction mechanism: NR2OH, formed via reaction of the amine with •OH, reacts with benzoic acid to form an isocyanate via a Lossen rearrangement. Hydrolysis followed by liberation of CO2 then delivers the aniline product. Notably, the scope of this transformation includes a variety of amines and aromatic acids and enables their conversion into aniline and N-substituted anilines, all in a single step. Additionally, this reaction occurs at room temperature and does not require metal catalysts or organic solvents.
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Affiliation(s)
- Yifan Meng
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Elumalai Gnanamani
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Richard N Zare
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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Murru S, Mokar BD, Bista R, Harakat D, Le Bras J, Fronczek F, Nicholas KM, Srivastava RS. Copper-catalyzed asymmetric allylic C–H amination of alkenes using N-arylhydroxylamines. Org Chem Front 2021. [DOI: 10.1039/d1qo00223f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The first Cu-catalyzed asymmetric allylic C–H amination of alkenes with N-aryl hydroxylamines has been developed. Metal-complexes isolation, ESI-MS analysis and the DFT calculations provided key insights on mechanistic pathway.
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Affiliation(s)
- Siva Murru
- Chemistry Program
- School of Sciences
- University of Louisiana at Monroe
- Louisiana 71209
- USA
| | - Bhanudas D. Mokar
- Department of Chemistry
- University of Louisiana at Lafayette
- Louisiana 70504
- USA
| | - Ramesh Bista
- Chemistry Program
- School of Sciences
- University of Louisiana at Monroe
- Louisiana 71209
- USA
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims – UMR 7312 CNRS-Université de Reims Champagne-Ardenne UFR des Sciences Exactes et Naturelles
- 51687 REIMS Cedex 2
- France
| | - Jean Le Bras
- Institut de Chimie Moléculaire de Reims – UMR 7312 CNRS-Université de Reims Champagne-Ardenne UFR des Sciences Exactes et Naturelles
- 51687 REIMS Cedex 2
- France
| | - Frank Fronczek
- Department of Chemistry
- Louisiana State University
- Baton Rouge 70803
- USA
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Wagh SB, Maslivetc V, La Clair JJ, Kornienko A. A fluorescent target-guided Paal-Knorr reaction. RSC Adv 2020; 10:37035-37039. [PMID: 34262697 PMCID: PMC8276889 DOI: 10.1039/d0ra06962k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
It has become increasingly apparent that high-diversity chemical reactions play a significant role in the discovery of bioactive small molecules. Here, we describe an expanse of this paradigm, combining a 'target-guided synthesis' concept with Paal-Knorr chemistry applied to the preparation of fluorescent ligands for human prostaglandin-endoperoxide synthase (COX-2).
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Affiliation(s)
- Sachin B Wagh
- The Department of Chemistry and Biochemistry, Texas State University, San Marcos 78666, USA
| | - Vladimir Maslivetc
- The Department of Chemistry and Biochemistry, Texas State University, San Marcos 78666, USA
| | | | - Alexander Kornienko
- The Department of Chemistry and Biochemistry, Texas State University, San Marcos 78666, USA
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