1
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Wu ZH, Qu HT, Han BJ, Yang JX, Chang XW, Feng CT. Synthesis of pyrazino[1,2- b]indazoles via cascade cyclization of indazole aldehydes with propargylic amines. Org Biomol Chem 2024; 22:2226-2230. [PMID: 38363281 DOI: 10.1039/d4ob00051j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
An efficient intermolecular annulation of indazole aldehydes with propargylic amines has been developed for the synthesis of pyrazinoindazoles under catalyst- and additive-free conditions. This straightforward methodology was found to feature a wide substrate scope, high atom economy and environmental advantages. The bioactivity results of these new pyrazino[1,2-b]indazoles showed that some of them exhibited significant antifungal activity.
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Affiliation(s)
- Zeng-Hui Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
| | - Heng-Tong Qu
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
| | - Ben-Jun Han
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
| | - Jia-Xin Yang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
| | - Xiang-Wei Chang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
- MOE-Anhui Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, Hefei, 230012, China
| | - Cheng-Tao Feng
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui academy of Chinese medicine, Hefei, 230012, China.
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2
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Marupalli SS, Arockiaraj M, Singh G, Rajeshkumar V. Iodine-Catalyzed Synthesis of Benzo-β-carbolines through Desulfurative Cyclization of 2-(1 H-Indol-3-ylsulfanyl)-phenylamines with Aryl Methyl Ketones. J Org Chem 2023; 88:12783-12791. [PMID: 37584251 DOI: 10.1021/acs.joc.3c00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
A novel transition metal-free strategy for the synthesis of benzene-fused β-carboline scaffolds has been developed. This protocol offers a rapid and direct pathway to access the benzene fused β-carboline from 2-(1H-indol-3-ylsulfanyl)-phenylamines and aryl methyl ketones using an efficient catalytic system of I2/DMSO. The present mild protocol proceeds through the sequential reactions of Kornblum oxidation, Pictet-Spengler cyclization, and desulfurization to afford the desired products in excellent yields up to 99%. Moreover, this method has a wide range of substrate tolerance and is operationally simple and applicable in gram-scale synthesis.
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Affiliation(s)
- Sasi Sree Marupalli
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Gargi Singh
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
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3
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Arcadi A, Morlacci V, Palombi L. Synthesis of Nitrogen-Containing Heterocyclic Scaffolds through Sequential Reactions of Aminoalkynes with Carbonyls. Molecules 2023; 28:4725. [PMID: 37375280 DOI: 10.3390/molecules28124725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Sequential reactions of aminoalkynes represent a powerful tool to easily assembly biologically important polyfunctionalized nitrogen heterocyclic scaffolds. Metal catalysis often plays a key role in terms of selectivity, efficiency, atom economy, and green chemistry of these sequential approaches. This review examines the existing literature on the applications of reactions of aminoalkynes with carbonyls, which are emerging for their synthetic potential. Aspects concerning the features of the starting reagents, the catalytic systems, alternative reaction conditions, pathways and possible intermediates are provided.
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Affiliation(s)
- Antonio Arcadi
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67100 Coppito, L'Aquila, Italy
| | - Valerio Morlacci
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67100 Coppito, L'Aquila, Italy
| | - Laura Palombi
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio, 67100 Coppito, L'Aquila, Italy
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4
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Ballesteros-Garrido R. Recent developments in the synthesis of 4-, 5-, 6- and 7-azaindoles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2023. [DOI: 10.1016/bs.aihch.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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5
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Wang S, Li R, Chen S, Mao G, Shao W, Deng GJ. Chemoselective synthesis of α-carboline derivatives via hypervalent iodine-catalyzed [3+3] annulation under metal-free conditions. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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6
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Pandey AR, Tiwari DK, Prakhar A, Mishra DP, Sharma SK. A review towards synthesis of heterocycles using propargyl alcohols and propargyl amines. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02927-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Burra AG, Uredi D, Motati DR, Fronczek FR, Watkins EB. Remote Functionalization of 8‐Substituted Quinolines with para‐Quinone Methides: Access to Unsymmetrical Tri(hetero)arylmethanes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | | | - E. Blake Watkins
- Union University Pharmaceutical Sciences 1050 Union University Drive 38305 Jackson UNITED STATES
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8
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Uredi D, Burra AG, Watkins EB. Rapid Access to 3-Substituted Pyridines and Carbolines via a Domino, Copper-free, Palladium-Catalyzed Sonogashira Cross-Coupling/6π-Aza Cyclization Sequence. J Org Chem 2021; 86:17748-17761. [PMID: 34846892 DOI: 10.1021/acs.joc.1c02034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a one-pot, three-component method for the preparation of 3-substituted pyridines and carbolines via copper-free, palladium-catalyzed Sonogashira cross-coupling with aryl iodides, followed by 6π-aza cyclization. This arylation cross-coupling/annulation cascade provides easy access to substituted, fused pyridines from readily available substrates in good yields (67-92%) with complete selectivity.
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Affiliation(s)
- Dilipkumar Uredi
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
| | - Amarender Goud Burra
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
| | - E Blake Watkins
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
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9
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Yang H, Poznik M, Tang S, Xue P, Du L, Liu C, Chen X, Chruma JJ. Synthesis of Conformationally Liberated Yohimbine Analogues and Evaluation of Cytotoxic Activity. ACS OMEGA 2021; 6:19291-19303. [PMID: 34337266 PMCID: PMC8320076 DOI: 10.1021/acsomega.1c02784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/07/2021] [Indexed: 05/09/2023]
Abstract
A modular synthetic approach to strategically unique structural analogues of the alkaloid yohimbine is reported. The overall synthetic strategy couples the transition-metal-catalyzed decarboxylative allylation of 2,2-diphenylglycinate imino esters with a scandium triflate-mediated highly endo-selective intramolecular Diels-Alder (IMDA) cycloaddition to generate a small collection of de-rigidified yohimbine analogues lacking the ethylene linkage between the indole and decahydroisoquinoline units. One compound generated in this study contains an unprecedented pentacyclic urea core and appears to demonstrate increased cytotoxicity against the gastric cancer cell line SGC-7901 in comparison to a pancreatic cancer cell line (PATU-8988) and a normal human gastric mucosal cell line (GES-1).
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Affiliation(s)
- Han Yang
- Key
Laboratory of Green Chemistry & Technology (MOE), College of Chemistry
and Sino-British Materials Research Institute, College of Physical
Sciences & Technology, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Michal Poznik
- Key
Laboratory of Green Chemistry & Technology (MOE), College of Chemistry
and Sino-British Materials Research Institute, College of Physical
Sciences & Technology, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Shaojian Tang
- School
of Pharmacy, Weifang Medical University, No. 7166, Baotong West Road, Weifang, Shandong 261053, P. R. China
| | - Peng Xue
- School
of Public Health, Weifang Medical University, No. 7166, Baotong West Road, Weifang, Shandong 261053, P. R. China
| | - Lidong Du
- School
of Clinical Medicine, Weifang Medical University, No. 7166, Baotong West Road, Weifang, Shandong 261053, P. R. China
| | - Chenlu Liu
- Key
Laboratory of Green Chemistry & Technology (MOE), College of Chemistry
and Sino-British Materials Research Institute, College of Physical
Sciences & Technology, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xiaochuan Chen
- Key
Laboratory of Green Chemistry & Technology (MOE), College of Chemistry
and Sino-British Materials Research Institute, College of Physical
Sciences & Technology, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Jason J. Chruma
- Key
Laboratory of Green Chemistry & Technology (MOE), College of Chemistry
and Sino-British Materials Research Institute, College of Physical
Sciences & Technology, Sichuan University, Chengdu, Sichuan 610064, P. R. China
- Department
of Chemistry, University of Virginia, McCormick Road, PO Box 400319, Charlottesville, Virginia 22903-4319, United States
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10
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Zhang H, Zhang R, Wang L, Li Y, Liao S, Zhou M. Synthesis Strategies for α‐, β‐, γ‐ and δ‐Carbolines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000690] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Rong‐Hong Zhang
- National Joint Local Engineering Laboratory for Cell Engineering and Biomedicine Technique Guizhou Province Key Laboratory of Regenerative Medicine Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences) Center for Tissue Engineering and Stem Cell Research Guizhou Medical University Guiyang 550004 PR China
| | - Li‐Xia Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Yong‐Jun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Shang‐Gao Liao
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Meng Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
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11
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Motati DR, Amaradhi R, Ganesh T. Recent developments in the synthesis of azaindoles from pyridine and pyrrole building blocks. Org Chem Front 2021. [DOI: 10.1039/d0qo01079k] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The azaindole framework is ubiquitous in bioactive natural products and pharmaceuticals. This review highlights the synthetic approaches to azaindoles with advantages and limitations, mechanistic pathways and biological importance.
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Affiliation(s)
- Damoder Reddy Motati
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Radhika Amaradhi
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
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12
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Banerjee A, Kundu S, Bhattacharyya A, Sahu S, Maji MS. Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines. Org Chem Front 2021. [DOI: 10.1039/d1qo00092f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review presents a critical and authoritative analysis of several exciting benzannulation approaches developed in the past decade for the construction of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines.
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Affiliation(s)
- Ankush Banerjee
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Kundu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Arya Bhattacharyya
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Sahu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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13
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Affiliation(s)
- José M. Alonso
- Departamento de Química Orgánica Universidad Complutense de Madrid Avda. Complutense s/n 28040 Madrid Spain
| | - María Paz Muñoz
- School of Chemistry University of East Anglia Earlham Road 4 7TJ Norwich, NR UK
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14
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Jiang B, Jia J, Sun Y, Wang Y, Zeng J, Bu X, Shi L, Sun X, Yang X. γ-Carboline synthesis enabled by Rh(iii)-catalysed regioselective C-H annulation. Chem Commun (Camb) 2020; 56:13389-13392. [PMID: 33034593 DOI: 10.1039/d0cc04740f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A redox-neutral Rh(iii)-catalyzed C-H annulation of indolyl oximes was developed. Relying on the use of various alkynyl silanes as the terminal alkyne surrogates, the reaction exhibited a reverse regioselectivity, thus giving an exclusive and easy way for the synthesis of a wide range of substituent free γ-carbolines at C3 position with high efficiency. Deuterium-labelling experiments and kinetic analysis have preliminarily shed light on the working mode of this catalytic system.
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Affiliation(s)
- Bo Jiang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, P. R. China.
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15
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Bakholdina A, Lukin A, Bakulina O, Guranova N, Krasavin M. Dual use of propargylamine building blocks in the construction of polyheterocyclic scaffolds. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Canela-Xandri A, Balcells M, Villorbina G, Christou P, Canela-Garayoa R. Preparation and Uses of Chlorinated Glycerol Derivatives. Molecules 2020; 25:E2511. [PMID: 32481583 PMCID: PMC7321119 DOI: 10.3390/molecules25112511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/19/2020] [Accepted: 05/25/2020] [Indexed: 11/16/2022] Open
Abstract
Crude glycerol (C3H8O3) is a major by-product of biodiesel production from vegetable oils and animal fats. The increased biodiesel production in the last two decades has forced glycerol production up and prices down. However, crude glycerol from biodiesel production is not of adequate purity for industrial uses, including food, cosmetics and pharmaceuticals. The purification process of crude glycerol to reach the quality standards required by industry is expensive and dificult. Novel uses for crude glycerol can reduce the price of biodiesel and make it an economical alternative to diesel. Moreover, novel uses may improve environmental impact, since crude glycerol disposal is expensive and dificult. Glycerol is a versatile molecule with many potential applications in fermentation processes and synthetic chemistry. It serves as a glucose substitute in microbial growth media and as a precursor in the synthesis of a number of commercial intermediates or fine chemicals. Chlorinated derivatives of glycerol are an important class of such chemicals. The main focus of this review is the conversion of glycerol to chlorinated derivatives, such as epichlorohydrin and chlorohydrins, and their further use in the synthesis of additional downstream products. Downstream products include non-cyclic compounds with allyl, nitrile, azide and other functional groups, as well as oxazolidinones and triazoles, which are cyclic compounds derived from ephichlorohydrin and chlorohydrins. The polymers and ionic liquids, which use glycerol as an initial building block, are highlighted, as well.
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Affiliation(s)
- Anna Canela-Xandri
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Mercè Balcells
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Gemma Villorbina
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Paul Christou
- Department of Crop and Forest Sciences, University of Lleida-Agrotecnio Center, Av. Rovira Roure 191, 25198 Lleida, Spain;
- ICREA, Catalan Institute for Research and Advanced Studies, Passeig Lluıís Companys 23, 08010 Barcelona, Spain
| | - Ramon Canela-Garayoa
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
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17
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Kamlah A, Bracher F. A Novel Approach to Highly Substituted β‐Carbolines via Reductive Ring Transformation of 2‐Acyl‐3‐isoxazolylindoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Alexandra Kamlah
- Department of Pharmacy Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Franz Bracher
- Department of Pharmacy Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
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18
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Kawahara KP, Matsuoka W, Ito H, Itami K. Synthesis of Nitrogen-Containing Polyaromatics by Aza-Annulative π-Extension of Unfunctionalized Aromatics. Angew Chem Int Ed Engl 2020; 59:6383-6388. [PMID: 32011794 DOI: 10.1002/anie.201913394] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/13/2020] [Indexed: 11/11/2022]
Abstract
Nitrogen-containing polycyclic aromatic compounds (N-PACs) are an important class of compounds in materials science. Reported here is a new aza-annulative π-extension (aza-APEX) reaction that allows rapid access to a range of N-PACs in 11-84 % yields from readily available unfunctionalized aromatics and imidoyl chlorides. In the presence of silver hexafluorophosphate, arenes and imidoyl chlorides couple in a regioselective fashion. The follow-up oxidative treatment with p-chloranil affords structurally diverse N-PACs, which are very difficult to synthesize. DFT calculations reveal that the aza-APEX reaction proceeds through the formal [4+2] cycloaddition of an arene and an in situ generated diarylnitrilium salt, with sequential aromatizations having relatively low activation energies. Transformation of N-PACs into nitrogen-doped nanographenes and their photophysical properties are also described.
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Affiliation(s)
- Kou P Kawahara
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Wataru Matsuoka
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Hideto Ito
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.,JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.,JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8601, Japan
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19
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Kawahara KP, Matsuoka W, Ito H, Itami K. Synthesis of Nitrogen‐Containing Polyaromatics by Aza‐Annulative π‐Extension of Unfunctionalized Aromatics. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913394] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kou P. Kawahara
- Graduate School of ScienceNagoya University Chikusa Nagoya 464-8602 Japan
| | - Wataru Matsuoka
- Graduate School of ScienceNagoya University Chikusa Nagoya 464-8602 Japan
| | - Hideto Ito
- Graduate School of ScienceNagoya University Chikusa Nagoya 464-8602 Japan
- JST-ERATOItami Molecular Nanocarbon ProjectNagoya University Chikusa Nagoya 464-8602 Japan
| | - Kenichiro Itami
- Graduate School of ScienceNagoya University Chikusa Nagoya 464-8602 Japan
- JST-ERATOItami Molecular Nanocarbon ProjectNagoya University Chikusa Nagoya 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM)Nagoya University Chikusa Nagoya 464-8601 Japan
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20
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Motati DR, Uredi D, Burra AG, Bowen JP, Fronczek FR, Smith CR, Watkins EB. Differential formation of nitrogen-centered radicals leading to unprecedented, regioselective bromination of N,N′-(1,2-phenylene)bisamides and 2-amidophenols. Org Chem Front 2020. [DOI: 10.1039/c9qo01508f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly efficient, site-selective, visible light-accelerated, remote C–H halogenation of unsymmetrical aromatic bisamides/amidoesters has been developed.
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Affiliation(s)
- Damoder Reddy Motati
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Dilipkumar Uredi
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Amarender Goud Burra
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - J. Phillip Bowen
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Mercer University
- Atlanta
- USA
| | | | - Clint R. Smith
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - E. Blake Watkins
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
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Velezheva VS, Babii OL, Khodak AA, Alekseeva EA, Nelyubina YV, Godovikov IA, Peregudov AS, Majorov KB, Nikonenko BV. Novel base-initiated cascade reactions of hemiindigos to produce dipolar γ-carbolines and indole-fused pentacycles. RSC Adv 2019; 9:41402-41408. [PMID: 35541627 PMCID: PMC9076487 DOI: 10.1039/c9ra07807j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/04/2019] [Indexed: 12/03/2022] Open
Abstract
Novel continuous-flow cascade reactions are developed for producing 1,4-diaryl-disubstituted dipolar γ-carbolines 2 that contain a carboxylate group and their two pentacyclic precursors 6, 7 from hemiindigos 1. The nucleophilic and pro-electrophilic chemistry described is new to the hemiindigos 1, and it led to the discovery of antimycobacterial scaffold characteristic of rimino-type pentacycles 6, 7 and potent drug clofazimine. The new scaffold like clofazimine appears to be useful in developing lead agents active against drug-resistant/dormant TB. Based on hemiindigos we developed novel reactions for producing γ-carbolines and their precursors that appeared to be active against MTB.![]()
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Affiliation(s)
- V S Velezheva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - O L Babii
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A A Khodak
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - E A Alekseeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - Yu V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - I A Godovikov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A S Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - K B Majorov
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
| | - B V Nikonenko
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
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22
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Reddy CR, Aila M, Sathish P, Mrinalini M, Giribabu L, Prasanthkumar S, Grée R. Metal-free propargylation/aza-annulation approach to substituted β-carbolines and evaluation of their photophysical properties. Org Biomol Chem 2019; 17:9291-9304. [PMID: 31626261 DOI: 10.1039/c9ob01959f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient acid-catalyzed propargylation/aza-annulation sequence was developed under metal-free reaction conditions, thus leading to a one-pot synthesis of a variety of substituted β-carbolines starting from propargylic alcohols and indole 2-carbonyls. This versatile strategy was further extended to the synthesis of 5-azaindoles and 5-azabenzothiazoles. Optical properties suggested that manipulation of electron donor and acceptor moieties on β-carbolines has an impact on their ground and excited state electronic behavior. This leads to blue or green emission and should facilitate the development of organic light emitting diodes (OLEDs). Electrochemical and stability studies revealed that 4a-6 shows ease of redox activity and photostability during illumination.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
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23
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Almandil NB, Taha M, Gollapalli M, Rahim F, Ibrahim M, Mosaddik A, Anouar EH. Indole bearing thiadiazole analogs: synthesis, β-glucuronidase inhibition and molecular docking study. BMC Chem 2019; 13:14. [PMID: 31384763 PMCID: PMC6661955 DOI: 10.1186/s13065-019-0522-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/16/2019] [Indexed: 12/05/2022] Open
Abstract
Indole based thiadiazole derivatives (1-22) have synthesized, characterized by NMR and HREI-MS and evaluated for β-Glucuronidase inhibition. All compounds showed outstanding β-glucuronidase activity with IC50 values ranging between 0.5 ± 0.08 to 38.9 ± 0.8 µM when compared with standard d-saccharic acid 1,4 lactone (IC50 value of 48.1 ± 1.2 µM). The compound 6, a 2,3-dihydroxy analog was found the most potent among the series with IC50 value 0.5 ± 0.08 µM. Structure activity relationship has been established for all compounds. To confirm the binding interactions of these newly synthesized compounds, molecular docking study have been carried out which reveal that these compounds established stronger hydrogen bonding networks with active site residues.
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Affiliation(s)
- Noor Barak Almandil
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Muhammad Taha
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Mohammed Gollapalli
- Department of Computer Information Systems, College of Computer Science & Information Technology, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Fazal Rahim
- Department of Chemistry, Hazara University, Mansehra, 21300 Khyber Pakhtunkhwa Pakistan
| | - Mohamed Ibrahim
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - Ashik Mosaddik
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, 31441 Saudi Arabia
| | - El Hassane Anouar
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 83, Al-Kharj, 11942 Saudi Arabia
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24
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Development of a Telescoped Flow Process for the Safe and Effective Generation of Propargylic Amines. MOLECULES (BASEL, SWITZERLAND) 2019; 24:molecules24203658. [PMID: 31658759 PMCID: PMC6833020 DOI: 10.3390/molecules24203658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 12/28/2022]
Abstract
Propargylic amines are important multifunctional building blocks that are frequently exploited in the synthesis of privileged heterocyclic entities. Herein we report on a novel flow process that achieves the safe and effective on-demand synthesis of propargylic amines in a telescoped manner. This process minimizes exposure to hazardous azide intermediates and renders a streamlined route into these building blocks. The value of this approach is demonstrated by the rapid generation of a small selection of drug-like thiazolines that result from a high-yielding reaction cascade between propargylic amines with different aryl isothiocyanates.
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25
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Hung TQ, Hieu DT, Van Tinh D, Do HN, Nguyen Tien TA, Van Do D, Son LT, Tran NH, Van Tuyen N, Tan VM, Ehlers P, Dang TT, Langer P. Efficient access to β- and γ-carbolines from a common starting material by sequential site-selective Pd-catalyzed C–C, C–N coupling reactions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130569] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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New 3-tetrazolyl-β-carbolines and β-carboline-3-carboxylates with anti-cancer activity. Eur J Med Chem 2019; 179:123-132. [DOI: 10.1016/j.ejmech.2019.05.085] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 12/28/2022]
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28
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Rizk SA, Abdelwahab SS, El‐Badawy AA. Design, Regiospecific Green Synthesis, Chemical Computational Analysis, and Antimicrobial Evaluation of Novel Phthalazine Heterocycles. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Sameh A. Rizk
- Chemistry Department, Faculty of ScienceAin Shams University Cairo Egypt 11566
| | - Salwa S. Abdelwahab
- Faculty of Pharmaceutical Sciences and Pharmaceutical IndustriesFuture University in Egypt Cairo Egypt 11835
| | - Azza A. El‐Badawy
- Chemistry Department, Faculty of ScienceAin Shams University Cairo Egypt 11566
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29
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Kaur N, Bhardwaj P, Devi M, Verma Y, Grewal P. Gold-catalyzed C–O bond forming reactions for the synthesis of six-membered O-heterocycles. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0920-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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30
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Kaur N, Grewal P, Bhardwaj P, Devi M, Verma Y. Nickel-catalyzed synthesis of five-membered heterocycles. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1594306] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Jaipur, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Jaipur, India
| | | | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Jaipur, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Jaipur, India
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31
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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32
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Gonela UM, Ablordeppey SY. Copper-Catalyzed, Ceric Ammonium Nitrate Mediated N-Arylation of Amines. NEW J CHEM 2019; 43:2861-2864. [PMID: 30886516 DOI: 10.1039/c8nj06145a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-Catalyzed, ligand and base free cross-coupling of aryl boronic acids with primary and secondary amines has been reported. This 'Chan-Evans-Lam' reaction has revealed that at room temperature, catalytic copper(II) acetate and ceric ammonium nitrate (CAN) as an oxidant, N-arylation can result in an effective C-N bond formation. This air stable, practical, robust protocol enables a variety of functional group tolerance on both boronic acid and amine partners.
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Affiliation(s)
- Uma Maheshwar Gonela
- Dr. Uma Maheshwar Gonela, and Dr. Seth Y Ablordeppey, Division of Basic Pharmaceutical Sciences, Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, United States
| | - Seth Y Ablordeppey
- Dr. Uma Maheshwar Gonela, and Dr. Seth Y Ablordeppey, Division of Basic Pharmaceutical Sciences, Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, United States
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33
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Uredi D, Motati DR, Watkins EB. A simple, tandem approach to the construction of pyridine derivatives under metal-free conditions: a one-step synthesis of the monoterpene natural product, (−)-actinidine. Chem Commun (Camb) 2019; 55:3270-3273. [DOI: 10.1039/c9cc01097a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
(−)-Actinidine, along with various diversely substituted pyridines were synthesized from simple starting materials, including natural products, using a mild and metal-free method.
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Affiliation(s)
- Dilipkumar Uredi
- Department of Pharmaceutical Sciences, College of Pharmacy, Union University
- Jackson
- USA
| | - Damoder Reddy Motati
- Department of Pharmaceutical Sciences, College of Pharmacy, Union University
- Jackson
- USA
| | - E. Blake Watkins
- Department of Pharmaceutical Sciences, College of Pharmacy, Union University
- Jackson
- USA
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