1
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Rai Deka JK, Sahariah B, Sarma BK. Understanding the Cis-Trans Amide Bond Isomerization of N, N'-Diacylhydrazines to Develop Guidelines for A Priori Prediction of Their Most Stable Solution Conformers. J Org Chem 2024; 89:10419-10433. [PMID: 36700530 DOI: 10.1021/acs.joc.2c01891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
N,N'-diacylhydrazines (R1CO-NR3-NR4-COR2) are a class of small molecules with a wide range of applications in chemistry and biology. They are structurally unique in the sense that their two amide groups are connected via a N-N single bond, and as a result, these molecules can exist in eight different isomeric forms. Four of these are amide isomers [trans-trans (t-t), trans-cis (t-c), cis-trans (c-t), and cis-cis (c-c)] arising from C-N bond restricted rotation. In addition, each of these amide isomers can exist in two different isomeric forms due to N-N bond restricted rotation, especially when R3 and R4 groups are relatively bigger. Herein, we have systematically investigated the conformations of 55 N,N'-diacylhydrazines using a combination of solution NMR spectroscopy, X-ray crystallography, and density functional theory calculations. Our data suggest that when the substituents R3 and R4 on the nitrogen atoms are both hydrogens. These molecules prefer twisted trans-trans (t-t) (>90%) geometries (H-N-C═O ∼ 180°), whereas the N-alkylated and N,N'-dialkylated molecules prefer twisted trans-cis (t-c) geometries. Herein, we have analyzed the stabilization of the various isomers of these molecules in light of steric and stereoelectronic effects. We provide a guideline to a priori predict the most stable conformers of the N,N'-diacylhydrazines just by examining their substituents (R1-R4).
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Affiliation(s)
- Jugal Kishore Rai Deka
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore 560064, India
| | - Biswajit Sahariah
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore 560064, India
| | - Bani Kanta Sarma
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore 560064, India
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2
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Sharma D, Chatterjee R, Dhayalan V, Dandela R. Metal-free oxidative coupling of aryl acetylene with elemental sulphur and amines: facile access to α-ketothioamides. Org Biomol Chem 2024; 22:5913-5917. [PMID: 38993016 DOI: 10.1039/d4ob00830h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
A simple and efficient oxidative coupling of aromatic alkynes with elemental sulphur and secondary amines has been reported. The iodine/DMSO system easily promoted the transformations, affording thioglyoxamides via C-S, C-O, and C-N bond formations. In this context, acetylenic C-H bond oxidation has occurred through iodination, leading to the desired products. Moreover, this metal-free, one-pot protocol is accomplished by using readily available starting materials, without external oxidants, and under aerobic conditions, providing a variety of α-ketothioamide compounds in moderate to good yields.
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Affiliation(s)
- Deepika Sharma
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantapuri, Bhubaneswar-751013, Odisha, India
| | - Rana Chatterjee
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantapuri, Bhubaneswar-751013, Odisha, India
| | - Vasudevan Dhayalan
- Department of Chemistry, National Institute of Technology Puducherry, Karaikal-609609, Puducherry, India.
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantapuri, Bhubaneswar-751013, Odisha, India
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3
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Hansen TN, Olsen CA. Contemporary Applications of Thioamides and Methods for Their Synthesis. Chemistry 2024; 30:e202303770. [PMID: 38088462 DOI: 10.1002/chem.202303770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Indexed: 12/23/2023]
Abstract
Thioamides are naturally occurring isosteres of amide bonds in which the chalcogen atom of the carbonyl is changed from oxygen to sulfur. This substitution gives rise to altered nucleophilicity and hydrogen bonding properties with importance for both chemical reactivity and non-covalent interactions. As such, thioamides have been introduced into biologically active compounds to achieve improved target affinity and/or stability towards hydrolytic enzymes but have also been applied as probes of protein and peptide folding and dynamics. Recently, a series of new methods have been developed for the synthesis of thioamides as well as their utilization in peptide chemistry. Further, novel strategies for the incorporation of thioamides into proteins have been developed, enabling both structural and functional studies to be performed. In this Review, we highlight the recent developments in the preparation of thioamides and their applications for peptide modification and study of protein function.
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Affiliation(s)
- Tobias N Hansen
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 160, 2100, Copenhagen, Denmark
| | - Christian A Olsen
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 160, 2100, Copenhagen, Denmark
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4
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Bak A, Kozik V, Swietlicka A, Baran W, Smolinski A, Zięba A. Towards Symmetric Thioamides: Microwave-Aided Synthesis of Terephthalic Acid Derivatives. Pharmaceuticals (Basel) 2023; 16:984. [PMID: 37513896 PMCID: PMC10385826 DOI: 10.3390/ph16070984] [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: 06/24/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
The multistep synthesis of novel bis-terephthalthioamides based on methyl esters of amino acids (AAs) was proposed using conventional heating and microwave-assisted approaches. In fact, the comparative case study on the thionation of new symmetrical diamides with Lawesson's reagent (LR) was performed. The microwave-accelerated small-scale methodology was successfully employed on the whole pathway from substrates (Gly, Ala, Val, Tyr, Ser) to products (symmetrical dithioamides of terephthalic acid), resulting in significantly reduced reaction time, energy requirements, and slightly increased reaction yields when compared to conventional heating. Moreover, the intermolecular similarity of novel terephthalic acid derivatives was estimated in the multidimensional space (mDS) of the structure/property-related in silico descriptors using principal component analysis (PCA) and hierarchical clustering analysis (HCA). The distance-oriented structure/property distribution was also correlated with the experimental lipophilic data.
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Affiliation(s)
- Andrzej Bak
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Violetta Kozik
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | | | - Wojciech Baran
- Department of General and Analytical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland
| | - Adam Smolinski
- Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland
| | - Andrzej Zięba
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland
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5
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Urbelienė N, Tiškus M, Tamulaitienė G, Gasparavičiūtė R, Lapinskaitė R, Jauniškis V, Sūdžius J, Meškienė R, Tauraitė D, Skrodenytė E, Urbelis G, Vaitekūnas J, Meškys R. Cytidine deaminases catalyze the conversion of N( S, O) 4-substituted pyrimidine nucleosides. SCIENCE ADVANCES 2023; 9:eade4361. [PMID: 36735785 PMCID: PMC9897663 DOI: 10.1126/sciadv.ade4361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 01/03/2023] [Indexed: 06/18/2023]
Abstract
Cytidine deaminases (CDAs) catalyze the hydrolytic deamination of cytidine and 2'-deoxycytidine to uridine and 2'-deoxyuridine. Here, we report that prokaryotic homo-tetrameric CDAs catalyze the nucleophilic substitution at the fourth position of N4-acyl-cytidines, N4-alkyl-cytidines, and N4-alkyloxycarbonyl-cytidines, and S4-alkylthio-uridines and O4-alkyl-uridines, converting them to uridine and corresponding amide, amine, carbamate, thiol, or alcohol as leaving groups. The x-ray structure of a metagenomic CDA_F14 and the molecular modeling of the CDAs used in this study show a relationship between the bulkiness of a leaving group and the volume of the binding pocket, which is partly determined by the flexible β3α3 loop of CDAs. We propose that CDAs that are active toward a wide range of substrates participate in salvage and/or catabolism of variously modified pyrimidine nucleosides. This identified promiscuity of CDAs expands the knowledge about the cellular turnover of cytidine derivatives, including the pharmacokinetics of pyrimidine-based prodrugs.
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Affiliation(s)
- Nina Urbelienė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Matas Tiškus
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Giedrė Tamulaitienė
- Department of Protein–DNA Interactions, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio av. 7, 10257 Vilnius, Lithuania
| | - Renata Gasparavičiūtė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Ringailė Lapinskaitė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
- Department of Organic Chemistry, Center for Physical Sciences and Technology, Akademijos 7, LT-08412 Vilnius, Lithuania
| | - Vykintas Jauniškis
- UAB Biomatter Designs (Biomatter), Žirmūnų st. 139A, 09120 Vilnius, Lithuania
| | - Jurgis Sūdžius
- Department of Organic Chemistry, Center for Physical Sciences and Technology, Akademijos 7, LT-08412 Vilnius, Lithuania
| | - Rita Meškienė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Daiva Tauraitė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Emilija Skrodenytė
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Gintaras Urbelis
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
- Department of Organic Chemistry, Center for Physical Sciences and Technology, Akademijos 7, LT-08412 Vilnius, Lithuania
| | - Justas Vaitekūnas
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
| | - Rolandas Meškys
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av., 10257 Vilnius, Lithuania
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6
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Yaragorla S, Latha DS. Chemo- and Stereoselective Synthesis of Substituted Thiazoles from tert-Alcohols Bearing Alkene and Alkyne Groups with Alkaline Earth Catalysts. ACS OMEGA 2022; 7:34693-34706. [PMID: 36188313 PMCID: PMC9520744 DOI: 10.1021/acsomega.2c05085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
We report here that thioamides can distinguish C-C double bonds and C-C triple bonds chemoselectively when subjected to a reaction with pent-1-en-4-yn-3-ol derivatives in the presence of Ca(OTf)2. This protocol offers a fast, efficient, and high-yielding synthesis of functionalized thiazoles. Interestingly, this reaction offers a time-dependent formation of kinetic and thermodynamic products. The products showed stereoselectivity concerning the alkene geometry. Further, we extended this protocol to synthesize oxazoles from propargyl alcohols and ibuprofen (NSAID) was converted into amide and then subjected to oxazole formation with tert-propargyl alcohols.
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7
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One‐pot synthesis of 2‐imino‐1,3,4‐thiadiazolines from acylhydrazides and isothiocyanates. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12585] [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]
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8
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Synthesis and Structure Determination of 2-Cyano-3-(1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-4-yl)acrylamide. MOLBANK 2022. [DOI: 10.3390/m1372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
2-Cyano-3-(1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-4-yl)acrylamide (3) was synthesized in 90% yield from condensation of equimolar equivalents of 1-phenyl-3-(thiophen-2-yl)-1H-pyrazole-4-carbaldehyde (1) and 2-cyanoacetamide (2) in boiling ethanol under basic condition for 45 min. The structure of 3 was determined using NMR spectroscopy and single crystal X-ray diffraction.
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9
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Nguyen TTT, Duong VD, Pham TNN, Duong QT, Nguyen TB. Sulfur–DMSO promoted oxidative coupling of active methylhetarenes with amines: access to amides. Org Biomol Chem 2022; 20:8054-8058. [DOI: 10.1039/d2ob01709a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The sulfur–DMSO couple was found to promote the coupling of active methylhetarenes with amines to yield amides under heating conditions. When 2-methylquinoline was used as the methylhetarene component, the reaction could be catalyzed by Fe, Co and Ni salts.
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Affiliation(s)
- Thi Thu Tram Nguyen
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Viet Dung Duong
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Thi Ngoc Nga Pham
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Quoc Thanh Duong
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France
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10
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Paixão DB, Soares EGO, Salles HD, Silva CDG, Rampon DS, Schneider PH. Rongalite in PEG-400 as a general and reusable system for the synthesis of 2,5-disubstituted chalcogenophenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01069k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein we report the use of rongalite in PEG-400 as a general, efficient, and environmentally benign reductive system for the synthesis of a wide range of 2,5-disubstituted chalcogenophenes from elemental sulfur, selenium and tellurium.
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Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Caren D. G. Silva
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, PR, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
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11
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Farajpour B, Alizadeh A. Recent advances in the synthesis of cyclic compounds using α,α-dicyanoolefins as versatile vinylogous nucleophiles. Org Biomol Chem 2022; 20:8366-8394. [DOI: 10.1039/d2ob01551j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This article provides a review of the applications of α,α-dicyanoolefins as versatile vinylogous nucleophiles in the synthesis of various cyclic compounds, covering the literature from the past 13 years.
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Affiliation(s)
- Behnaz Farajpour
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
| | - Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
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12
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Liu Y, Mo X, Majeed I, Zhang M, Wang H, Zeng Z. An Efficient and Straightforward Approach for Accessing Thioesters via Palladium-Catalyzed C-N Cleavage of Thioamides. Org Biomol Chem 2022; 20:1532-1537. [DOI: 10.1039/d1ob02349g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We first report the coupling of activated thioamides with alcohols to efficiently form thioesters via palladium-catalyzed C-N cleavage strategy. The new approach employs the thioamides as thioacylating reagent to give...
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13
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Goodwin MD, Costa MQ, Robinson JR, Kotyk CM. Mechanochemical synthesis of thiolactams and other thioamides using Lawesson’s reagent. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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14
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Avadhani A, Iniyavan P, Kumar Y, Ila H. Single-Pot Preparation of 4-Amino-2-(het)aryl-5-Substituted Thiazoles Employing Functionalized Dithioesters as Thiocarbonyl Precursors. J Org Chem 2021; 86:8508-8515. [PMID: 34107686 DOI: 10.1021/acs.joc.1c00616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An effective, diversity oriented, one-pot reaction of 4-amino-2-(het)aryl/alkyl-5-functionalized thiazoles has been disclosed, utilizing aryl/heteroaryl/alkyl dithioesters as thiocarbonyl coupling partners in a modified Thorpe-Ziegler type cyclization. The reaction proceeds at room temperature, under mild conditions, in excellent yields, displaying broad functional group compatibility at 2 and 5 positions of thiazoles. This synthetic strategy has been further expanded for the one-pot construction of two highly potent tubulin polymerization inhibitors, i.e., 2-(het)aryl-4-amino-5-(3,4,5-trimethoxyaroyl) thiazoles, in high yields.
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Affiliation(s)
- Anusha Avadhani
- Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Pethaperumal Iniyavan
- Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Yogendra Kumar
- Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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15
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Wu K, Ling Y, Ding A, Jin L, Sun N, Hu B, Shen Z, Hu X. A chromatography-free and aqueous waste-free process for thioamide preparation with Lawesson's reagent. Beilstein J Org Chem 2021; 17:805-812. [PMID: 33889221 PMCID: PMC8042485 DOI: 10.3762/bjoc.17.69] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/26/2021] [Indexed: 02/05/2023] Open
Abstract
After completing the thio-substitution with Lawesson’s reagent, ethanol was found to be effective in the decomposition of the inherent stoichiometric six-membered-ring byproduct from the Lawesson’s reagent to a highly polarized diethyl thiophosphonate. The treatment significantly simplified the following chromatography purification of the desired thioamide in a small scale preparation. As scaling up the preparation of two pincer-type thioamides, we have successfully developed a convenient process with ethylene glycol to replace ethanol during the workup, including a traditional phase separation, extraction, and recrystallization. The newly developed chromatography-free procedure did not generate P-containing aqueous waste, and only organic effluents were discharged. It is believed that the optimized procedure offers the great opportunity of applying the Lawesson’s reagent for various thio-substitution reactions on a large scale.
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Affiliation(s)
- Ke Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Yichen Ling
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - An Ding
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Nan Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Baoxiang Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Zhenlu Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
| | - Xinquan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P.R. China
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16
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Vankar JK, Gupta A, Jadav JP, Nanjegowda SH, Gururaja GN. The thioamidation of gem-dibromoalkenes in an aqueous medium. Org Biomol Chem 2021; 19:2473-2480. [PMID: 33651057 DOI: 10.1039/d0ob02319a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct integration of sulphur and amine groups with 1,1-dibromoalkenes for thioamide synthesis has been achieved in an aqueous medium. The presented green protocol emphasizes the suitability of aqueous media for the thioamidation reaction and enables greater selectivity with synthetic utility. A wide range of thioamides in moderate to excellent yields has been achieved using readily available starting materials, with the use of no organic solvents, catalysts, or additives.
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Affiliation(s)
- Jigarkumar K Vankar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
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17
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Li J, Li J, Ji X, Liu Q, Chen L, Huang Y, Li Y. Transition Metal‐Free Synthesis of Substituted Isothiazoles
via
Three‐Component Annulation of Alkynones, Xanthate and NH
4
I. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jian Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
| | - Jiaming Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
| | - Xiaoliang Ji
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
| | - Qiang Liu
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
- Center of Basic Molecular Science Department of Chemistry Tsinghua University Beijing 100084 People's Republic of China
| | - Lu Chen
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
| | - Yubing Huang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
| | - Yibiao Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong Province 529090 People's Republic of China
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18
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Zaid MEA, Belboukhari N, Sekkoum K, Ibtissam B, Enein HYA. Synthesis and Chiral Separation of Some 4-thioflavones. J Chromatogr Sci 2021; 59:856-862. [PMID: 33558896 DOI: 10.1093/chromsci/bmab007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 01/11/2021] [Indexed: 11/14/2022]
Abstract
A thionation reaction was performed on some chiral flavanones using Lawesson's reagent (LR) and leads to the formation of new chiral thiocarbonyl flavanes. LR in this thionation reaction with Hesperetin and Naringenin gives new flavan-4-thiones with yields ranged between 41 and 52%. Based on the Wittig reaction principle, LR is currently the most widely used reagent for this type of reaction. Enantiomeric separation by high-performance liquid chromatography methods was then set-up using three different polysaccharide-based chiral stationary phases (CSPs). Chiral separations were successfully accomplished with high resolution (1.22 ≤ Rs ≤ 5.23). The chiral discrimination mechanism(s) between the analytes under study, mobile phase, and the CSPs were discussed.
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Affiliation(s)
- Mohammed El Amin Zaid
- Bioactive Molecules and Chiral Separation Laboratory, Faculty of Exacts Sciences, University T.M. Béchar, Rue de l'indépendance; Boîte Postale 417 Béchar, 08000 Bechar, Algeria
| | - Nasser Belboukhari
- Bioactive Molecules and Chiral Separation Laboratory, Faculty of Exacts Sciences, University T.M. Béchar, Rue de l'indépendance; Boîte Postale 417 Béchar, 08000 Bechar, Algeria
| | - Khaled Sekkoum
- Bioactive Molecules and Chiral Separation Laboratory, Faculty of Exacts Sciences, University T.M. Béchar, Rue de l'indépendance; Boîte Postale 417 Béchar, 08000 Bechar, Algeria
| | - Bousmaha Ibtissam
- Bioactive Molecules and Chiral Separation Laboratory, Faculty of Exacts Sciences, University T.M. Béchar, Rue de l'indépendance; Boîte Postale 417 Béchar, 08000 Bechar, Algeria
| | - Hassan Y Aboul Enein
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Center, 33 El Buhouth St, Ad Doqi, Dokki, Cairo Governorate, Giza 12622, Egypt
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19
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A straightforward route to alkyl
5‐arylthiophene
‐2‐thiocarboxylates from alkyl
2‐aroyl
‐1‐chlorocyclopropanecarboxylates. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Zhou T, Gao D, Li JX, Xu MJ, Xu J. Identification of an α-Oxoamine Synthase and a One-Pot Two-Step Enzymatic Synthesis of α-Amino Ketones. Org Lett 2020; 23:37-41. [PMID: 33284636 DOI: 10.1021/acs.orglett.0c03600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alb29, an α-oxoamine synthase involved in albogrisin biosynthesis in Streptomyces albogriseolus MGR072, was characterized and responsible for the incorporation of l-glutamate to acyl-coenzyme A substrates. Combined with Alb29 and Mgr36 (an acyl-coenzyme A ligase), a one-pot enzymatic system was established to synthesize seven α-amino ketones. When these α-amino ketones were fed into the alb29 knockout strain Δalb29, respectively, the albogrisin analogs with different side chains were observed.
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Affiliation(s)
- Ting Zhou
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.,Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Du Gao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.,Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jia-Xin Li
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Min-Juan Xu
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jun Xu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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21
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Paixão DB, Rampon DS, Salles HD, Soares EGO, Bilheri FN, Schneider PH. Trithiocarbonate Anion as a Sulfur Source for the Synthesis of 2,5-Disubstituted Thiophenes and 2-Substituted Benzo[b]thiophenes. J Org Chem 2020; 85:12922-12934. [DOI: 10.1021/acs.joc.0c01516] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, Rio Grande do Sul, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Filipe N. Bilheri
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
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22
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Zhang Q, Huang Y, Zhan LW, Tang WY, Hou J, Li BD. Photoredox-Catalyzed α-C(sp3)–H Activation of Unprotected Secondary Amines: Facile Access to 1,4-Dicarbonyl Compounds. Org Lett 2020; 22:7460-7464. [DOI: 10.1021/acs.orglett.0c02571] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qian Zhang
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Huang
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Le-Wu Zhan
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wan-Ying Tang
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jing Hou
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Bin-Dong Li
- College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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23
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Mohajer F, Ziarani GM, Moradi R. The Study of Several Synthesis Methods of Indolizidine (±)-209I and (±)-209B as Natural Alkaloids. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200226113022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Natural products have received much attention due to their importance and
application. Indolizidine, categorized as an alkaloid, has several biological activities. The
synthesis of natural compounds such as indolizidines has attracted much attention from
many chemists’ and researchers’ perspectives. There are many areas to be explored in
this subject; that is why synthesizing indolizidine 209I and (±)-indolizidine 209B as
natural compounds have received much consideration. This review discloses the procedures
and methodology to provide (±)-indolizidine 209I and 209B due to the importance
of indolizidines.
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Affiliation(s)
| | | | - Razieh Moradi
- Department of Chemistry, Alzahra University, Tehran, Iran
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24
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Prasad MG, Lakshmi CV, Katari NK, Pal M. Lemon Juice as a Biocatalyst Under Ultrasound Irradiation: Synthesis and Pharmacological Evaluation of 2-amino 1,3,4-thiadiazoles. Anticancer Agents Med Chem 2020; 20:1379-1386. [PMID: 32271700 DOI: 10.2174/1871520620666200409143513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/19/2020] [Accepted: 02/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The 2-amino 1,3,4-thiadiazole framework has attracted considerable interest because of its prevalence in compounds possessing a wide range of pharmacological properties including anticancer/antitumor activities. Though a number of methods have been reported for the synthesis of this class of compounds, some of them are not straightforward, inexpensive and environmentally friendly. OBJECTIVE To synthesize 2-amino-1,3,4-thiadiazole derivatives that could act as potential anticancer agents. METHODS The use of lemon juice as an inexpensive and readily available biocatalyst was explored in the synthesis of 2-amino 1,3,4-thiadiazole derivatives. Accordingly, a convenient method has been developed for the rapid synthesis of this class of compounds under a mild and non-hazardous reaction condition in good yields. The methodology involved the reaction of various acid hydrazides with TMSNCS in the presence of lemon juice in PEG-400 at room temperature (25-30ºC) under ultrasound irradiation. These compounds were assessed for their cytotoxic properties against two different metastatic breast cancer cell lines e.g., MDAMB-231 and MCF-7 and subsequently against SIRT1. RESULTS The 2-amino 1,3,4-thiadiazole derivatives 3a, 3i, 3j and 3l showed promising growth inhibition of MDAMB- 231 and MCF-7 cell lines and SIRT1 inhibition in vitro. Indeed, 3i was found to be a potent inhibitor of SIRT1. CONCLUSION An ultrasound-assisted method facilitated by lemon juice has been developed to synthesize 2-amino- 1,3,4-thiadiazole derivatives that could act as potential anticancer agents.
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Affiliation(s)
- Malavattu G Prasad
- Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, India
| | - Chapala V Lakshmi
- Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, India
| | - Naresh K Katari
- Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, India
| | - Manojit Pal
- Dr Reddy's Institute of Life Sciences, University of Hyderabad Campus, Hyderabad-500046, India
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25
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26
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Nickel-Catalyzed Removal of Alkene Protecting Group of Phenols, Alcohols via Chain Walking Process. Molecules 2020; 25:molecules25030602. [PMID: 32019185 PMCID: PMC7037277 DOI: 10.3390/molecules25030602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/25/2020] [Accepted: 01/28/2020] [Indexed: 11/23/2022] Open
Abstract
An efficient nickel-catalyzed removal of alkene protection group under mild condition with high functional group tolerance through chain walking process has been established. Not only phenolic ethers, but also alcoholic ethers can be tolerated with the retention of stereocenter adjacent to hydroxyl group. The new reaction brings the homoallyl group into a start of new type of protecting group.
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27
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A. Ismail M, M. El-Sayed W, Shaaban S, A. Abdelwahab G, S. Hamama W. A Review of Cationic Arylfurans and Their Isosteres: Synthesis and Biological Importance. CURR ORG CHEM 2020. [DOI: 10.2174/1385272823666191029114830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present study provides an overview of the chemistry and biological importance
of the cationic chalcophene derivatives (furans, thiophenes and selenophenes). The
summarized literature survey includes synthetic methods, reactivity and biological activities
of aryl/hetarylchalcophenes that have been reported mainly from 2001 to 2019 focusing
on monochalcophenes. A discussion demonstrating the proposed mechanisms of some
interesting synthetic routes and linking structure features to biological activities is presented.
These classes of compounds including cationic chalcophenes possess antiproliferative,
antimicrobial and antiprotozoal activities. This review highlights recent advances
for arylchalcophene derivatives and may contribute to the design and structure optimization
of new chalcophene derivatives in the future.
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Affiliation(s)
- Mohamed A. Ismail
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wael M. El-Sayed
- Department of Zoology, Faculty of Science, University of Ain Shams, Abbassia 11566, Cairo, Egypt
| | - Saad Shaaban
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Ghada A. Abdelwahab
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wafaa S. Hamama
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
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28
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Mthembu SN, Sharma A, Albericio F, de la Torre BG. 2-(Dibenzylamino)butane-1,4-dithiol (DABDT), a Friendly Disulfide-Reducing Reagent Compatible with a Broad Range of Solvents. Org Lett 2019; 21:10111-10114. [PMID: 31774687 DOI: 10.1021/acs.orglett.9b04106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disulfide-reducing agents play a crucial role in bioconjugate chemistry. Herein, we describe the synthesis of a new disulfide-reducing agent [2-(dibenzylamino)butane-1,4-dithiol (DABDT)] that is conveniently prepared from inexpensive aspartic acid. Being nonmalodorous and highly soluble in a broad range of solvents, DABDT is user-friendly. We have demonstrated its performance both in solution and in the solid phase.
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Affiliation(s)
- Sinenhlanhla N Mthembu
- Peptide Science Laboratory, School of Chemistry and Physics , University of KwaZulu-Natal , Durban 4001 , South Africa.,KRISP, College of Health Sciences , University of KwaZulu-Natal , Westville, Durban 4001 , South Africa
| | - Anamika Sharma
- Peptide Science Laboratory, School of Chemistry and Physics , University of KwaZulu-Natal , Durban 4001 , South Africa.,KRISP, College of Health Sciences , University of KwaZulu-Natal , Westville, Durban 4001 , South Africa
| | - Fernando Albericio
- Peptide Science Laboratory, School of Chemistry and Physics , University of KwaZulu-Natal , Durban 4001 , South Africa.,Department of Organic Chemistry , University of Barcelona , Martí i Franqués 1-11 , Barcelona 08028 , Spain.,CIBER-BBN, Networking Centre on Bioengineering , Biomaterials and Nanomedicine, and IQAC, CSIC , Jordi Girona , Barcelona 08028 , Spain
| | - Beatriz G de la Torre
- KRISP, College of Health Sciences , University of KwaZulu-Natal , Westville, Durban 4001 , South Africa
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29
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Sun Y, Jin W, Liu C. Trash to Treasure: Eco-Friendly and Practical Synthesis of Amides by Nitriles Hydrolysis in WEPPA. Molecules 2019; 24:molecules24213838. [PMID: 31653123 PMCID: PMC6864965 DOI: 10.3390/molecules24213838] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 11/21/2022] Open
Abstract
The hydration of nitriles to amides in a water extract of pomelo peel ash (WEPPA) was realized with moderate to excellent yields without using external transition metals, bases or organic solvents. This reaction features a broad substrate scope, wide functional group tolerance, prominent chemoselectivity, and good reusability. Notably, a magnification experiment in this bio-based solvent at 100 mmol further demonstrated its practicability.
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Affiliation(s)
- Yajun Sun
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Weiwei Jin
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
| | - Chenjiang Liu
- The Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
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30
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Egorov DM, Chernov IS, Popchuk MV, Polukeev VA, Dogadina AV. Some Features of Phosphorylation of 4-Substituted Thiosemicarbazides with Chloroethynylphosphonates. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219100086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Chen J, Mei L, Liu J, Zhong C, Yuan B, Li Q. Microwave-assisted iodine-catalyzed oxidative coupling of dibenzyl(difurfuryl)disulfides with amines: a rapid and efficient protocol for thioamides. RSC Adv 2019; 9:28576-28580. [PMID: 35529638 PMCID: PMC9070997 DOI: 10.1039/c9ra05939c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/03/2019] [Indexed: 12/12/2022] Open
Abstract
An efficient protocol for synthesis of thioamides was developed via the microwave-assisted iodine-catalyzed oxidative coupling of dibenzyl(difurfuryl)disulfides with amines. This process is scalable and tolerates a wide spectrum of amines to deliver the corresponding products in moderate to excellent yields in 10 minutes, providing a cheap and rapid approach to thioamides.
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Affiliation(s)
- Jinyang Chen
- College of Chemistry and Chemical Engineering, Yangtze Normal University Fuling Chongqing 408000 P. R. China
| | - Lan Mei
- College of Chemistry and Chemical Engineering, Yangtze Normal University Fuling Chongqing 408000 P. R. China
| | - Jialing Liu
- College of Chemistry and Chemical Engineering, Yangtze Normal University Fuling Chongqing 408000 P. R. China
| | - Chuntao Zhong
- College of Chemistry and Chemical Engineering, Yangtze Normal University Fuling Chongqing 408000 P. R. China
| | - Binfang Yuan
- College of Chemistry and Chemical Engineering, Yangtze Normal University Fuling Chongqing 408000 P. R. China
| | - Qiang Li
- Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University No. 1, Hunan Street Liaocheng Shandong 252059 P. R. China
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32
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Zhu K, Ohtani T, Tripathi CB, Uraguchi D, Ooi T. Formal Hydroformylation of α,β-Unsaturated Carboxylic Acids under Photoexcited Ketone Catalysis. CHEM LETT 2019. [DOI: 10.1246/cl.190197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kailong Zhu
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Tsuyoshi Ohtani
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Chandra Bhushan Tripathi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Daisuke Uraguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8601, Japan
- CREST, Japan Science and Technology Agency (JST), Nagoya University, Nagoya, Aichi 464-8601, Japan
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33
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Bouchet LM, Peñéñory AB, Pierini AB, Argüello JE. Combined Experimental and Theoretical Studies on the Radical Nucleophile Addition Reaction for Sulfide- and Selenide-Centered Anions. J Phys Chem A 2019; 123:5035-5042. [DOI: 10.1021/acs.jpca.9b02485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lydia M. Bouchet
- INFIQC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Alicia B. Peñéñory
- INFIQC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Adriana B. Pierini
- INFIQC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Juan E. Argüello
- INFIQC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
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34
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Qiao M, Zhang J, Chen L, Zhou F, Zhang Y, Zhou L, Wu Y. Transition metal-free α-C sp3-H oxidative sulfuration of benzyl thiosulfates with anilines to form N-aryl thioamides. Org Biomol Chem 2019; 17:3790-3796. [PMID: 30916696 DOI: 10.1039/c9ob00336c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free approach to N-aryl thioamides from Bunte salts and anilines in DMSO has been developed. This method tolerated a wide range of functional groups on the aromatic ring, providing an ideal way to N-aryl thioamides in good to excellent yields from cheap and easily available starting materials. A plausible mechanism was also proposed based on the X-ray single crystal diffraction, NMR and MS analyses of DMSO-concerning intermediates.
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Affiliation(s)
- Mengjun Qiao
- Henan Key Laboratory of Chemical Biology and Organic Chemistry Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China.
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35
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Lai M, Wu Z, Wang Y, Zheng Y, Zhao M. Selective synthesis of aryl thioamides and aryl-α-ketoamides from α-oxocarboxylic acids and tetraalkylthiuram disulfides: an unexpected chemoselectivity from aryl sulfonyl chlorides. Org Chem Front 2019. [DOI: 10.1039/c8qo01127c] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tosyl chloride-controlled generation of thioamides and α-ketoamides via base-promoted decarboxylative reaction of α-oxocarboxylic acids with tetraalkylthiuram disulfides has been established.
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Affiliation(s)
- Miao Lai
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province
- College of Tobacco Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Zhiyong Wu
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province
- College of Tobacco Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Yizhi Wang
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province
- College of Tobacco Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Ying Zheng
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province
- College of Tobacco Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Mingqin Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province
- College of Tobacco Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
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36
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Gan L, Gao Y, Wei L, Wan JP. Synthesis of α-Keto Thioamides by Metal-Free C═C Bond Cleavage in Enaminones Using Elemental Sulfur. J Org Chem 2018; 84:1064-1069. [PMID: 30563332 DOI: 10.1021/acs.joc.8b02670] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An unprecedented method for cleaving the C═C bond in N, N-disubstituted enaminones in the presence of elemental sulfur and N, N-dimethyl-4-aminopyridine is disclosed. Without using any metal catalyst or additive, the cascade functionalization of both C═C and C-H bonds takes place to enable the formation of new C═S and C-N bonds, thus providing a facile and practical method for the synthesis of N, N-disubstituted α-keto thioamides.
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Affiliation(s)
- Lu Gan
- College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
| | - Yong Gao
- College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
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37
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Daryaei I, Sandoval K, Witt K, Kontoyianni M, Michael Crider A. Discovery of a 3,4,5-trisubstituted-1,2,4-triazole agonist with high affinity and selectivity at the somatostatin subtype-4 (sst 4) receptor. MEDCHEMCOMM 2018; 9:2083-2090. [PMID: 30746066 PMCID: PMC6336083 DOI: 10.1039/c8md00388b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/06/2018] [Indexed: 12/20/2022]
Abstract
A series of compounds containing a 1,2,4-triazole moiety were synthesized, targeting the somatostatin receptor subtype-4 (sst4). Compounds were developed in which the Phe6/Phe7/Phe11, Trp8, and Lys9 mimetic groups were interchanged at positions 3, 4, and 5 of the 1,2,4-triazole ring. The 1,2,4-triazoles containing an 2-(imidazol-4-yl)ethyl substituent at position-3 demonstrated moderate binding affinity at sst4. 1,2,4-Triazoles containing an (indol-3-yl)methyl substituent at position-5 lacked affinity at sst4. The 1,2,4-triazoles containing an aminopropyl group at position-4 showed enhanced binding affinity compared to the 3-position. One compound with an 3-(imidazol-4-yl)propyl group at position-4 (compound 44) imparted high affinity and selectivity at sst4 (sst2A = >10 000 nM; sst4 = 19 nM), acting as an agonist (EC50 = 6.8 nM). Docking 44 into a model-built structure of sst4 pointed to differences in its binding versus the other low-affinity compounds and was also in line with one of the two previously reported binding modes. A virtual screening (VS) experiment, employing two separate docking algorithms, was able to score 44 among the top-ranked poses. In summary, compound 44 represents a novel and promising lead structure towards the development of a clinically viable sst4 agonist for the treatment of conditions ranging from Alzheimer's disease to chronic pain.
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Affiliation(s)
- Iman Daryaei
- Department of Pharmaceutical Sciences , School of Pharmacy , Southern Illinois University Edwardsville , Edwardsville , IL , 62026-2000 USA .
- NuvOx Pharma , 1635 18th St , Tucson , AZ , 85719 USA
| | - Karin Sandoval
- Department of Pharmaceutical Sciences , School of Pharmacy , Southern Illinois University Edwardsville , Edwardsville , IL , 62026-2000 USA .
| | - Ken Witt
- Department of Pharmaceutical Sciences , School of Pharmacy , Southern Illinois University Edwardsville , Edwardsville , IL , 62026-2000 USA .
| | - Maria Kontoyianni
- Department of Pharmaceutical Sciences , School of Pharmacy , Southern Illinois University Edwardsville , Edwardsville , IL , 62026-2000 USA .
| | - A Michael Crider
- Department of Pharmaceutical Sciences , School of Pharmacy , Southern Illinois University Edwardsville , Edwardsville , IL , 62026-2000 USA .
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38
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Ma X, Dewez DF, Du L, Luo X, Markó IE, Lam K. Synthesis of Diketones, Ketoesters, and Tetraketones by Electrochemical Oxidative Decarboxylation of Malonic Acid Derivatives: Application to the Synthesis of cis-Jasmone. J Org Chem 2018; 83:12044-12055. [DOI: 10.1021/acs.joc.8b01994] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaofeng Ma
- Laboratoire de Chimie Organique et Médicinale, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Damien F. Dewez
- Laboratoire de Chimie Organique, Service de Chimie et Physicochimie Organiques, Université libre de Bruxelles, Avenue F.D. Roosevelt 50, CP160/60, 1050 Brussels, Belgium
| | - Le Du
- Laboratoire de Chimie Organique et Médicinale, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Xiya Luo
- Laboratoire de Chimie Organique et Médicinale, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - István E. Markó
- Laboratoire de Chimie Organique et Médicinale, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Kevin Lam
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham Maritime ME4 4TB, United Kingdom
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39
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Tayade YA, Jangale AD, Dalal DS. Simple and Highly Efficient Synthesis of Thioamide Derivatives Using β-Cyclodextrin as Supramolecular Catalyst in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201801553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yogesh A. Tayade
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
| | - Asha D. Jangale
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
| | - Dipak S. Dalal
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
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40
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Adib M, Rajai-Daryasarei S, Pashazadeh R, Jahani M, Yazzaf R, Amanlou M. A Consecutive Four-Component Synthesis of Polysubstituted Thiophenes in Aqueous Medium. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800361] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mehdi Adib
- School of Chemistry; College of Science; University of Tehran; PO Box 14155-6455 Tehran Iran
| | - Saideh Rajai-Daryasarei
- School of Chemistry; College of Science; University of Tehran; PO Box 14155-6455 Tehran Iran
| | - Rahim Pashazadeh
- School of Chemistry; College of Science; University of Tehran; PO Box 14155-6455 Tehran Iran
| | - Mehdi Jahani
- School of Chemistry; College of Science; University of Tehran; PO Box 14155-6455 Tehran Iran
| | - Rozita Yazzaf
- School of Chemistry; College of Science; University of Tehran; PO Box 14155-6455 Tehran Iran
| | - Massoud Amanlou
- Pharmaceutical Sciences Research Center and Department of Medicinal Chemistry; Tehran University of Medical Sciences; Tehran Iran
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41
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Stereoselective synthesis of 3,4-di-substituted mercaptolactones via photoredox-catalyzed radical addition of thiophenols. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Ismail MF, Elsayed GA. Dodecanoyl isothiocyanate and N′-(2-cyanoacetyl) dodecanehydrazide as precursors for the synthesis of different heterocyclic compounds with interesting antioxidant and antitumor activity. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1428345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Mahmoud F. Ismail
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt
| | - Galal A. Elsayed
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt
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43
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Xia X, Chen B, Zeng X, Xu B. Synthesis of α-amino ketones through aminations of umpoled enolates. Org Biomol Chem 2018; 16:6918-6922. [DOI: 10.1039/c8ob02004c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An efficient synthesis of α-amino ketones is developed using the umpolung strategy.
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Affiliation(s)
- Xiaowen Xia
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Bocheng Chen
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles
- Ministry of Education
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
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44
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Inhibition of UDP-glucose dehydrogenase by 6-thiopurine and its oxidative metabolites: Possible mechanism for its interaction within the bilirubin excretion pathway and 6TP associated liver toxicity. J Pharm Biomed Anal 2017; 151:106-115. [PMID: 29324279 DOI: 10.1016/j.jpba.2017.12.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/24/2017] [Accepted: 12/29/2017] [Indexed: 02/07/2023]
Abstract
6-Thiopurine (6TP) is an actively prescribed drug in the treatment of various diseases ranging from Crohn's disease and other inflammatory diseases to acute lymphocytic leukemia and non-Hodgkin's leukemia. While 6TP has beneficial therapeutic uses, severe toxicities are also reported with its use, such as jaundice and liver toxicity. While numerous investigations into the mode in which toxicity originates has been undertaken. None have investigated the effects of inhibition towards UDP-Glucose Dehydrogenase (UDPGDH), an oxidative enzyme responsible for UDP-glucuronic acid (UDPGA) formation or UDP-Glucuronosyl transferase (UGT1A1), which is responsible for the conjugation of bilirubin with UDPGA for excretion. Failure to excrete bilirubin leads to jaundice and liver toxicity. We proposed that either 6TP or its primary oxidative excretion metabolites inhibit one or both of these enzymes, resulting in the observed toxicity from 6TP administration. Inhibition analysis of these purines revealed that 6-thiopurine has weak to no inhibition towards UDPGDH with a Ki of 288 μM with regard to varying UDP-glucose, but 6-thiouric (primary end metabolite, fully oxidized at carbon 2 and 8, and highly retained by the body) has a near six-fold increased inhibition towards UDPGDH with a Ki of 7 μM. Inhibition was also observed by 6-thioxanthine (oxidized at carbon 2) and 8-OH-6TP with Ki values of 54 and 14 μM, respectively. Neither 6-thiopurine or its excretion metabolites were shown to inhibit UGT1A1. Our results show that the C2 and C8 positions of 6TP are pivotal in said inhibition towards UDPGDH and have no effect upon UGT1A1, and that blocking C8 could lead to new analogs with reduced, if not eliminated jaundice and liver toxicities.
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45
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Maity P, Ranu BC. Iodine-Catalyzed Synthesis of Chalcogenophenes by the Reaction of 1,3-Dienyl Bromides and Potassium Selenocyanate/Potassium Sulfide (KSeCN/K2
S). Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701232] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Pintu Maity
- Department of Organic Chemistry, Indian Association for the Cultivation of Science; Jadavpur, Kolkata 700032 India
| | - Brindaban C. Ranu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science; Jadavpur, Kolkata 700032 India
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46
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Shokri S, Li J, Manna MK, Wiederrecht GP, Gosztola DJ, Ugrinov A, Jockusch S, Rogachev AY, Ayitou AJL. A Naphtho-p-quinodimethane Exhibiting Baird’s (Anti)Aromaticity, Broken Symmetry, and Attractive Photoluminescence. J Org Chem 2017; 82:10167-10173. [DOI: 10.1021/acs.joc.7b01647] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siamak Shokri
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Jingbai Li
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Manoj K. Manna
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Gary P. Wiederrecht
- Center
for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - David J. Gosztola
- Center
for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Angel Ugrinov
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58106, United States
| | - Steffen Jockusch
- Department
of Chemistry, Columbia University, New York, New York 10025, United States
| | - Andrey Yu Rogachev
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - A. Jean-Luc Ayitou
- Department
of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
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47
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Kutsumura N, Ohshita R, Horiuchi J, Tateno K, Yamamoto N, Saitoh T, Nagumo Y, Kawai H, Nagase H. Synthesis of heterocyclic compounds with adamantane-like cage structures consisting of phosphorus, sulfur, and carbon. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.07.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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48
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Zhou Z, Yu JT, Zhou Y, Jiang Y, Cheng J. Aqueous MCRs of quaternary ammoniums, N-substituted formamides and sodium disulfide towards aryl thioamides. Org Chem Front 2017. [DOI: 10.1039/c6qo00670a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component reaction of quaternary ammonium salts, N-substituted formamides and aqueous sodium disulfide was developed, leading to aryl/heteroaryl thioamides in moderate to good yields with good functional group compatibility.
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Affiliation(s)
- Zhou Zhou
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Jin-Tao Yu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Yongnan Zhou
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Yan Jiang
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
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49
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Esumi N, Suzuki K, Nishimoto Y, Yasuda M. Synthesis of 1,4-Dicarbonyl Compounds from Silyl Enol Ethers and Bromocarbonyls, Catalyzed by an Organic Dye under Visible-Light Irradiation with Perfect Selectivity for the Halide Moiety over the Carbonyl Group. Org Lett 2016; 18:5704-5707. [PMID: 27779410 DOI: 10.1021/acs.orglett.6b02869] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the visible-light-induced radical coupling reaction of silyl enol ethers with α-bromocarbonyl compounds to give 1,4-dicarbonyls. The reaction was effectively accelerated using an inexpensive organic dye (eosin Y) as a photoredox catalyst. 1,4-Dicarbonyl compounds alone were afforded, without the generation of carbonyl adducts of the α-halocarbonyls, which are usually generated in the presence of fluoride anions or Lewis acids. A variety of silyl enol ethers, α-bromoketones, α-bromoesters, and α-bromoamides were applied to this system to produce the coupling compounds.
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Affiliation(s)
- Naoto Esumi
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kensuke Suzuki
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Makoto Yasuda
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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50
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Cheng FC, Yin L, Liu XJ, Liu WW, Cao ZL, Shi DH, Wang L. Synthesis of Novel Glycosyl 1,3,4-Thiadiazole Derivatives. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14738636315471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A convenient and mild protocol for the synthesis of glycosyl 1,3,4-thiadiazole derivatives was developed, which involved the reaction of glycosyl isothiocyanate, hydrazine hydrate, and various aldehydes followed by oxidative cyclisation with ferric ammonium sulfate in methanol. 13 examples of different glycosyl 1,3,4-thiadiazole derivatives were prepared. Good yields (70–87%) have been achieved. The glycosyl 1,3,4-thiadiazole derivatives may find applications in medicinal chemistry and pharmaceutical industry.
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Affiliation(s)
- Feng-Chang Cheng
- China University of Mining and Technology, Xuzhou 221116, P.R. China
| | - Long Yin
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
| | - Xiu-Jian Liu
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
| | - Wei-Wei Liu
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
- Jiangsu Institute of Marine Resources, Lianyungang 222005, P.R. China
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
| | - Zhi-Ling Cao
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
- Jiangsu Institute of Marine Resources, Lianyungang 222005, P.R. China
| | - Da-Hua Shi
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
- Jiangsu Institute of Marine Resources, Lianyungang 222005, P.R. China
| | - Lei Wang
- College of Pharmaceutical Sciences, Huaihai Institute of Technology, Lianyungang 222005, P.R. China
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