1
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A P, Makam P. 1,4-Dihydropyridine: synthetic advances, medicinal and insecticidal properties. RSC Adv 2022; 12:29253-29290. [PMID: 36320730 PMCID: PMC9555063 DOI: 10.1039/d2ra04589c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/21/2022] [Indexed: 11/07/2022] Open
Abstract
1,4-Dihydropyridine (1,4-DHP) is one of the foremost notable organic scaffolds with diverse pharmaceutical applications. This study will highlight recent accomplishments in the construction of 1,4-DHP with structural and functional modifications using multi-component one-pot and green synthetic methodologies. The various intrinsic therapeutic applications, ranging from calcium channel blocker, anti-oxidative, anticancer, anti-inflammatory, anti-microbial, anti-hypertensive, anti-diabetic, anticoagulants, anti-cholinesterase, neuro-protective, and other miscellaneous activities, have been summarized with a focus on their structure-activity relationship (SAR) investigations. In addition, the insecticidal properties have been collated and discussed. Researchers in the fields of medicinal chemistry and drug development will find the summarized conclusions of this study incredibly informative, instructional, and valuable.
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Affiliation(s)
- Parthiban A
- Centre for Excellence on GMP Extraction Facility, National Institute of Pharmaceutical Education and Research, (NIPER) Guwahati Assam India 781101
| | - Parameshwar Makam
- Department of Chemistry, School of Applied and Life Sciences, Uttaranchal University Arcadia Grant, P. O. Chandanwari, Premnagar Dehradun Uttarakhand India 248007
- Dr Param Laboratories Phase-1, IDA, B. N. Reddy Nagar, Cherlapally Hyderabad Telangana 500051 India
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2
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Vinodhini C, Kiruthika SE, Perumal PT, Chitra K. Neat Multicomponent Assembly of Highly Functionalized Acenaphtho[1,2‐b]pyrroles, In Vitro Evaluation for Antioxidant and Cytotoxic Activities. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- C. Vinodhini
- Department of Pharmaceutical Chemistry, Sri Ramachandra Faculty of Pharmacy Sri Ramachandra Institute of Higher Education and Research, Porur Chennai Tamil Nadu India
| | - Selvarangam E. Kiruthika
- Department of Organic Chemistry Central Leather Research Institute, Adyar Chennai Tamil Nadu India
| | | | - K. Chitra
- Department of Pharmaceutical Chemistry, Sri Ramachandra Faculty of Pharmacy Sri Ramachandra Institute of Higher Education and Research, Porur Chennai Tamil Nadu India
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3
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Preeti, Singh KN. Metal-free multicomponent reactions: a benign access to monocyclic six-membered N-heterocycles. Org Biomol Chem 2021; 19:2622-2657. [PMID: 33683272 DOI: 10.1039/d1ob00145k] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The advent of multicomponent reactions in the synthesis of heterocycles and their ever burgeoning applications in drug development, materials chemistry, and catalysis, have attracted a great deal of current scientific interest. In particular, the metal-free multicomponent synthesis of six membered N-heterocycles has undergone intensive research over the last two decades offering an environmentally benevolent means contrary to traditional metal catalysed reactions. To the best of our knowledge, there exists no exclusive review on the metal-free multicomponent synthesis of six membered N-heterocyles, and hence the present report highlights the progress on metal-free multicomponent reactions with their advantages and mechanistic insights to access monocyclic six-membered N-heterocycles including pyridine, pyrimidine, pyrazine, triazine and their hydrogenated derivatives. The literature is covered since 2000, and the contents offer not only striking methods for divergent synthesis of six-membered N-heterocycles but also put forward some new insights into the exploration of metal-free multicomponent chemistry.
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Affiliation(s)
- Preeti
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
| | - Krishna Nand Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
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4
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Auria-Luna F, Marqués-López E, Romanos E, Fernández-Moreira V, Gimeno MC, Marzo I, Herrera RP. Novel ureido-dihydropyridine scaffolds as theranostic agents. Bioorg Chem 2020; 105:104364. [PMID: 33113409 DOI: 10.1016/j.bioorg.2020.104364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/25/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022]
Abstract
In this work, the synthesis of interesting urea derivatives 5 based on 1,4-dihydropyridines 3 is described for the first time. Considering that both families exhibit potential as drugs to treat various diseases, their activity as anticancer agents has been evaluated in HeLa (cervix), Jurkat (leukaemia) and A549 (lung) cancer cell lines as well as on healthy mice in vivo. In general, whereas 1,4-dihydropyridines show a moderate cytotoxic activity, their urea analogues cause an extraordinary increase in their antiproliferative activity, specially towards HeLa cells. Because of the chiral nature of these compounds, enantiomerically enriched samples were also tested, showing different cytotoxic activity than the racemic mixture. Although the reason is not clear, it could be caused by a complex amalgam of physical and chemical contributions. The studied compounds also exhibit luminescent properties, which allow performing a biodistribution study in cancer cells. They have emission maxima between 420 and 471 nm, being the urea derivatives in general red shifted. Emission quenching was observed for those compounds containing a nitro group (3e,f and 5e,f). Fluorescence microscopy showed that 1,4-dihydropyridines 3a and 3g localised in the lysosomes, in contrast to the urea derivatives 5h that accumulated in the cell membrane. This different distribution could be key to explain the differences found in the cytotoxic activity and in the mechanism of action. Interestingly, a preliminary in vivo study regarding the acute toxicity of some of these compounds on healthy mice has been conducted, using a concentration up to 7200 times higher than the corresponding IC50 value. No downgrade in the welfare of the tested mice was observed, which could support their use in preclinical tumour models.
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Affiliation(s)
- Fernando Auria-Luna
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Eugenia Marqués-López
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Eduardo Romanos
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain; Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain; Departamento de Imagen y Fenotipado, Instituto Aragonés de Ciencias de la Salud, Centro de Investigación Biomédica de Aragón (CIBA), Avda. San Juan Bosco, 13, planta D, E-50009 Zaragoza, Spain
| | - Vanesa Fernández-Moreira
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Isabel Marzo
- Departamento de Bioquímica y Biología Celular, Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
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5
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Mirakmahaleh MS, Rad-Moghadam K, Kefayati H, Falakro S. Expedient synthesis of novel antibacterial hydrazono-4-thiazolidinones under catalysis of a natural-based binary ionic liquid. Mol Divers 2020; 25:109-119. [PMID: 31939064 DOI: 10.1007/s11030-019-10028-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/23/2019] [Indexed: 11/29/2022]
Abstract
A library of pyran-2H-one-3-ylmethylidene and chromene-2H-one-3-ylmethylidene derivatives of the titled heterocyclic framework was synthesized from 3-acyl-4-hydroxypyran/chromene-2H-one via sequential reaction with thiosemicarbazide and dialkyl acetylenedicarboxylates. The syntheses were carried out under efficient catalysis of a new binary ionic liquid mixture [L-prolinium chloride][1-methylimidazolium-3-sulfonate] in one pot and solvent-free conditions. Calculations based on density functional theory displayed that the barrier energy for interconversion of the two possible diastereomeric isomers of each product is less than the thermal energy of molecules at room temperature, as only one product can be resolved from a given reaction mixture. This seems to be the case for the previously reported hydrazonothiazolidines. The binary ionic liquid mixture melts at near room temperature and can be considered as a solution of HCl in 1:1 mixture of two zwitterionic species. It proved to be more efficient than its constituents in catalyzing the above synthesis in one-pot operation. Some of the synthesized products have shown pronounced antibacterial activities. The ionic liquid is virtually stable in air and moisture, as can be retrieved several times without appreciable decrease in its catalytic activity.
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Affiliation(s)
| | | | - Hassan Kefayati
- Chemistry Department, Islamic Azad University, Rasht Branch, Rasht, Iran
| | - Soroush Falakro
- Chemistry Department, Islamic Azad University, Rasht Branch, Rasht, Iran
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6
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Festa AA, Storozhenko OA, Golantsov NE, Subramani K, Novikov RA, Zaitseva SO, Baranov MS, Varlamov AV, Voskressensky LG. Homophtalonitrile for Multicomponent Reactions: Syntheses and Optical Properties of o-Cyanophenyl- or Indol-3-yl-Substituted Chromeno[2,3- c]isoquinolin-5-Amines. ChemistryOpen 2019; 8:23-30. [PMID: 30652060 PMCID: PMC6331947 DOI: 10.1002/open.201800207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Indexed: 11/17/2022] Open
Abstract
Malononitrile is a useful reagent for multicomponent reactions with hundreds of methods developed. In this paper, we suggest α‐(cyano)‐o‐tolunitrile (homophtalonitrile) to work as a vinylogous malononitrile. Thus, a organocatalytic pseudo‐three‐component reaction of homopthalonitrile (2 equiv) and o‐hydroxybenzaldehyde, leading to the diastereoselective formation of 5‐amino‐12H‐chromeno[2,3‐c]isoquinolin‐12‐yl)(cyano)methyl)benzonitriles, was discovered. The possibility to employ other nucleophiles was demonstrated for indoles, and a sequential three‐component reaction of homophtalonitrile, o‐hydroxybenzaldehyde, and (aza)indole, giving 12‐(1H‐Indol‐3‐yl)‐12H‐chromeno[2,3‐c]isoquinolin‐5‐amines, was developed. The photophysical properties of the synthesized compounds have been studied, revealing high fluorescence quantum yields (42–70 %) for indol‐3‐yl substituted 12H‐chromeno[2,3‐c]isoquinolin‐5‐amines and reversible fluorescence quenching under acidic conditions.
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Affiliation(s)
- Alexey A Festa
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
| | - Olga A Storozhenko
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
| | - Nikita E Golantsov
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
| | - Karthikeyan Subramani
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
| | - Roman A Novikov
- Engelhardt Institute of Molecular Biology Russian Academy of Sciences Vavilova st., 32 119991 Moscow Russian Federation
| | - Snezhana O Zaitseva
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russian Federation
| | - Mikhail S Baranov
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russian Federation.,Pirogov Russian National Research Medical University Ostrovitianov 1 117997 Moscow Russian Federation
| | - Alexey V Varlamov
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty RUDN University Miklukho-Maklaya st. 6 117198 Moscow Russian Federation
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7
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Khan MM, Saigal, Khan S, Shareef S, Danish M. Organocatalyzed Synthesis and Antifungal Activity of Fully Substituted 1,4-Dihydropyridines. ChemistrySelect 2018. [DOI: 10.1002/slct.201800709] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Musawwer Khan
- Department of Chemistry; Aligarh Muslim University; Aligarh - 202002 India
| | - Saigal
- Department of Chemistry; Aligarh Muslim University; Aligarh - 202002 India
| | - Sarfaraz Khan
- Department of Chemistry; Aligarh Muslim University; Aligarh - 202002 India
| | | | - Mohammad Danish
- Department of Botany; Aligarh Muslim University; Aligarh - 202002 India
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8
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Auria-Luna F, Marqués-López E, Herrera RP. Organocatalytic Enantioselective Synthesis of 1,4-Dihydropyridines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700300] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Fernando Auria-Luna
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Eugenia Marqués-López
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Raquel P. Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; C/ Pedro Cerbuna 12 50009 Zaragoza Spain
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9
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Auria-Luna F, Marqués-López E, Gimeno MC, Heiran R, Mohammadi S, Herrera RP. Asymmetric Organocatalytic Synthesis of Substituted Chiral 1,4-Dihydropyridine Derivatives. J Org Chem 2017; 82:5516-5523. [DOI: 10.1021/acs.joc.7b00176] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Fernando Auria-Luna
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
| | - Eugenia Marqués-López
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
| | - M. Concepción Gimeno
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
| | - Roghayeh Heiran
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
| | - Somayeh Mohammadi
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
| | - Raquel P. Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento
de Química Orgánica, ‡Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna, 12, E-50009, Zaragoza, Spain
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10
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Voskoboynik OY, Кovalenko SI, Okovytyy SI, Shishkina SV. Dimethyl Acetylenedicarboxylate in Reactions with Substituted 3‐(2‐aminophenyl)‐6‐R
1
‐1,2,4‐triazin‐5‐(2
H
)‐ones: Structure and Properties of the Products. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Olexii Yu. Voskoboynik
- Department of Organic and Bioorganic ChemistryZaporizhia State Medical University Mayakovsky Avenue, 26 Zaporizhia 69035 Ukraine
| | - Sergiy I. Кovalenko
- Department of Organic and Bioorganic ChemistryZaporizhia State Medical University Mayakovsky Avenue, 26 Zaporizhia 69035 Ukraine
| | - Sergiy I. Okovytyy
- Department of Organic ChemistryDnepropetrovsk National University 72 Gagarina Avenue Dnepropetrovsk 49050 Ukraine
| | - Svitlana V. Shishkina
- SSI «Institute for Single Crystals», National Academy of Sciences of Ukraine 60 Nauki Avenue Kharkiv b61001 Ukraine
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11
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Baghery S, Zolfigol MA. 3,6-Dioxaoctamethylenediamminium trifluoromethanesulfonate [3,6-DOMDA]OTf as a novel ionic liquid catalyst for the synthesis of functionalized 1,4-dihydropyridines. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.02.073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Ramesh R, Madhesh R, Malecki JG, Lalitha A. Piperidine Catalyzed Four-component Strategy for the Facile Access of Polyfunctionalized 1,4-Dihydropyridines at Ambient Conditions. ChemistrySelect 2016. [DOI: 10.1002/slct.201601358] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rathinam Ramesh
- Department of Chemistry; Periyar University; Salem- 636011, Tamil Nadu India
| | - Raji Madhesh
- Department of Chemistry; Periyar University; Salem- 636011, Tamil Nadu India
| | - Jan Grzegorz Malecki
- Department of Crystallography; University of Silesia; Szkolna 9 40-006 Katowice Poland
| | - Appaswami Lalitha
- Department of Chemistry; Periyar University; Salem- 636011, Tamil Nadu India
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13
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Li S, Yang Q, Wang J. Copper(II) triflate-catalyzed highly efficient synthesis of N-substituted 1,4-dihydropyridine derivatives via three-component cyclizations of alkynes, amines, and α,β-unsaturated aldehydes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.085] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Tabassum S, Govindaraju S, Khan RUR, Pasha MA. Ultrasound mediated, green innovation for the synthesis of polysubstituted 1,4-dihydropyridines. RSC Adv 2016. [DOI: 10.1039/c6ra05441b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An atom efficient protocol via a one-pot four-component cyclocondensation reaction catalyzed by copper(i) iodide in aqueous medium under ultrasonic irradiation has been developed for the synthesis of novel polysubstituted 1,4-dihydropyridines.
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Affiliation(s)
- Sumaiya Tabassum
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bangalore-560 001
- India
| | - Santhosh Govindaraju
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bangalore-560 001
- India
| | - Riyaz-ur-Rahaman Khan
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bangalore-560 001
- India
| | - M. A. Pasha
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bangalore-560 001
- India
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15
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One-pot access to a privileged library of six membered nitrogenous heterocycles through multi-component cascade approach. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2354-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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16
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Sudhapriya N, Nandakumar A, Perumal PT. Facile synthesis of 2-substituted quinolines and 3-alkynyl-2-aryl-2H-Indazole via SnCl2-mediated reductive cyclization. RSC Adv 2014. [DOI: 10.1039/c4ra09153a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Li XT, Zhao AD, Mo LP, Zhang ZH. Meglumine catalyzed expeditious four-component domino protocol for synthesis of pyrazolopyranopyrimidines in aqueous medium. RSC Adv 2014. [DOI: 10.1039/c4ra08689a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Meglumine has been found to be an efficient catalyst for the synthesis of structurally diverse tricyclic fused pyrazolopyranopyrimidines by one-pot, four-component reaction of ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes and barbituric acid in water.
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Affiliation(s)
- Xiao-Tang Li
- College of Chemistry & Material Science
- Hebei Normal University
- Shijiazhuang 050024, P. R. China
| | - Ai-Dong Zhao
- Testing and Analysis Center
- Hebei Normal University
- Shijiazhuang 050024, P. R. China
| | - Li-Ping Mo
- College of Chemistry & Material Science
- Hebei Normal University
- Shijiazhuang 050024, P. R. China
| | - Zhan-Hui Zhang
- College of Chemistry & Material Science
- Hebei Normal University
- Shijiazhuang 050024, P. R. China
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