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Patel PJ, Vala RM, Patel SG, Upadhyay DB, Rajani DP, Damiri F, Berrada M, Patel HM. Catalyst-free synthesis of imidazo[5,1-b]quinazolines and their antimicrobial activity. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Parmar M, Vala RM, Patel HM. Importance of Hybrid Catalysts toward the Synthesis of 5 H-Pyrano[2,3- d]pyrimidine-2-ones/2,4-diones (Thiones). ACS Omega 2023; 8:1759-1816. [PMID: 36687108 PMCID: PMC9850783 DOI: 10.1021/acsomega.2c05349] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
The pyranopyrimidine core is a key precursor for medicinal and pharmaceutical industries due to its broader synthetic applications as well as its bioavailability. Among its four possible isomers, we found that 5H-pyrano[2,3-d]pyrimidine scaffolds have a wide range of applicability, and in recent years, they have been intensively investigated, but the development of the main core is found to be more challenging due to its structural existence. In this review article, we cover all of the synthetic pathways that are employed for the development of substituted 4-aryl-octahydropyrano/hexahydrofuro[2,3-d]pyrimidin-2-one (thiones) and 5-aryl-substituted pyrano[2,3-d]pyrimidindione (2-thiones) derivatives through a one-pot multicomponent reaction using diversified hybrid catalysts such as organocatalysts, metal catalysts, ionic liquid catalysts, nanocatalysts, green solvents, catalyst-/solvent-free conditions, and miscellaneous catalysts as well as the mechanism and recyclability of the catalysts. This review mainly focuses on the application of hybrid catalysts (from 1992 to 2022) for the synthesis of 5H-pyrano[2,3-d]pyrimidine scaffolds. This review will definitely attract the world's leading researchers to utilize broader catalytic applications for the development of lead molecules.
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Patel P, Patel DM, Vala RM, Patel SG, Upadhyay DB, Pannerselvam Y, Patel HM. Catalyst-Free, Room-Temperature Accessible Regioselective Synthesis of Spiroquinolines and Their Antioxidant Study. ACS Omega 2023; 8:444-456. [PMID: 36643529 PMCID: PMC9835643 DOI: 10.1021/acsomega.2c05020] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
An efficient, regioselective, and environmentally benign approach was established using the multicomponent reaction-based synthesis of novel antioxidant spiroquinoline derivatives such as spiro[dioxolo[4,5-g]quinoline], spiro[dioxino[2,3-g]quinoline], and spiro[pyrazolo[4,3-f]quinoline] by reaction of aryl aldehyde, Meldrum's acid, and amine derivatives under an additive-free reaction in aqueous ethanol. Here, two asymmetric carbon centers, three new C-C bonds, and one C-N bond are developed in the final motif. This synthetic methodology offers excellent yields with an easy workup procedure, high diastereoselectivity [d.r. >50:1 (cis/trans)], admirable atom economy, and low E-factor values. Synthesized spiro compounds were investigated for their in vitro antioxidant activity by 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging assays. In the ABTS radical scavenging assay, compounds 4d, 4f, and 4l exhibit excellent potency, and in the DPPH radical scavenging assay, compounds 4a, 4d, 4f, and 4g, exhibit excellent potency.
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Affiliation(s)
- Paras
J. Patel
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar388120, Gujarat, India
| | - Divyang M. Patel
- Department
of Chemistry, AEPS Institute of Science, Ankleshwar393002, Gujarat, India
- Veer
Narmad South Gujarat University, Surat395007, Gujarat, India
| | - Ruturajsinh M. Vala
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar388120, Gujarat, India
| | - Subham G. Patel
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar388120, Gujarat, India
| | - Dipti B. Upadhyay
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar388120, Gujarat, India
| | - Yuvaraj Pannerselvam
- Branch
laboratory, CSIR-North East Institute of
Science & Technology (NEIST), Imphal795004, Manipur, India
| | - Hitendra M. Patel
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar388120, Gujarat, India
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Vala RM, Tandon V, Nicely LG, Guo L, Gu Y, Banerjee S, Patel HM. Synthesis of N-(4-chlorophenyl) substituted pyrano[2,3-c]pyrazoles enabling PKBβ/AKT2 inhibitory and in vitro anti-glioma activity. Ann Med 2022; 54:2549-2561. [PMID: 36120909 PMCID: PMC9683054 DOI: 10.1080/07853890.2022.2123559] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A series of N-(4-chlorophenyl) substituted pyrano[2,3-c]pyrazoles was synthesised and screened for their potential to inhibit kinases and exhibit anticancer activity against primary patient-derived glioblastoma 2D cells and 3D neurospheres. A collection of 10 compounds was evaluated against glioma cell lines, with compound 4j exhibiting promising glioma growth inhibitory properties. Compound 4j was screened against 139 purified kinases and exhibited low micromolar activity against kinase AKT2/PKBβ. AKT signalling is one of the main oncogenic pathways in glioma and is often targeted for novel therapeutics. Indeed, AKT2 levels correlated with glioma malignancy and poorer patient survival. Compound 4j inhibited the 3D neurosphere formation in primary patient-derived glioma stem cells and exhibited potent EC50 against glioblastoma cell lines. Although exhibiting potency against glioma cells, 4j exhibited significantly less cytotoxicity against non-cancerous cells even at fourfold-fivefold the concentration. Herein we establish a novel biochemical kinase inhibitory function for N-(4-chlorophenyl) substituted pyrano[2,3-c]pyrazoles and further report their anti-glioma activity in vitro for the first time.KEY MESSAGEAnti-glioma pyrano[2,3-c]pyrazole 4j inhibited the 3D neurosphere formation in primary patient-derived glioma stem cells. 4j also displayed PKBβ/AKT2 inhibitory activity. 4j is nontoxic towards non-cancerous cells.
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Affiliation(s)
- Ruturajsinh M Vala
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, India
| | - Vasudha Tandon
- Department of Cellular & Systems Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Lynden G Nicely
- Department of Cellular & Systems Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Luxia Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei, Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei, Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Sourav Banerjee
- Department of Cellular & Systems Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Hitendra M Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, India
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Vala D, Vala RM, Patel HM. Versatile Synthetic Platform for 1,2,3-Triazole Chemistry. ACS Omega 2022; 7:36945-36987. [PMID: 36312377 PMCID: PMC9608397 DOI: 10.1021/acsomega.2c04883] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 09/30/2022] [Indexed: 05/31/2023]
Abstract
1,2,3-Triazole scaffolds are not obtained in nature, but they are still intensely investigated by synthetic chemists in various fields due to their excellent properties and green synthetic routes. This review will provide a library of all synthetic routes used in the past 21 years to synthesize 1,2,3-triazoles and their derivatives using various metal catalysts (such as Cu, Ni, Ru, Ir, Rh, Pd, Au, Ag, Zn, and Sm), organocatalysts, metal-free as well as solvent- and catalyst-free neat syntheses, along with their mechanistic cycles, recyclability studies, solvent systems, and reaction condition effects on regioselectivity. Constant developments indicate that 1,2,3-triazoles will help lead to future organic synthesis and are useful for creating molecular libraries of various functionalized 1,2,3-triazoles.
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Sharma MG, Vala RM, Rajani DP, Ramkumar V, Gardas RL, Banerjee S, Patel HM. Crystal structure, antibacterial and antifungal evaluation of 5-bromothiophene based 3,4-dihydropyrimidin-2-(1 H)-(thi)ones. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2121397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Mayank G. Sharma
- Department of Chemistry, Sardar Patel University, Gujarat, India
| | | | | | - Venkatachalam Ramkumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Ramesh L. Gardas
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Sourav Banerjee
- Department of Cellular Medicine, School of Medicine, University of Dundee, Dundee, UK
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Patel SG, Vala RM, Patel PJ, Upadhyay DB, Ramkumar V, Gardas RL, Patel HM. Synthesis, crystal structure and in silico studies of novel 2,4-dimethoxy-tetrahydropyrimido[4,5- b]quinolin-6(7 H)-ones. RSC Adv 2022; 12:18806-18820. [PMID: 35873341 PMCID: PMC9240959 DOI: 10.1039/d2ra02694e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/21/2022] [Indexed: 01/18/2023] Open
Abstract
Herein, acetic acid mediated multicomponent synthesis of novel 2,4-dimethoxy-tetrahydropyrimido[4,5-b]quinolin-6(7H)-one (2,4-dimethoxy-THPQs) was reported. Single-crystal XRD analysis of four newly developed crystals of 2,4-dimethoxy-THPQs and their DFT study were also reported. The structure of all molecules was optimized using DFT B3LYP/6-31G(d) level and compared with the corresponding single-crystal XRD data. As a result, the theoretical and experimental geometrical parameters (bond lengths and bond angles) were found to be in good agreement. Frontier molecular orbital (FMO) and molecule electrostatic potential (MEP) analyses were used to investigate the physicochemical properties and relative reactivity of 2,4-dimethoxy-THPQs. The formation of strong C–H⋯O and N–H⋯O interaction was investigated by Hirshfeld analysis. Furthermore, electronic charge density concentration in 2,4-dimethoxy-THPQs was analysed by the Mulliken atomic charges which helps to predict the ability of 2,4-dimethoxy-THPQs to bind in the receptor. The molecular docking of the crystal structure of 2,4-dimethoxy-THPQs in the main protease (Mpro) of SARS-CoV-2 suggested that all four 2,4-dimethoxy-THPQs efficiently docked in Mpro. Furthermore, 2,4-dimethoxy-THPQs with a 3-chloro substitution in the phenyl ring have the highest binding affinity because of the additional formation of halogen bonds and highest dipole moment. Single-crystal XRD analysis of 2,4-dimethoxy THPQs and their relative reactivity with properties were investigated using DFT calculation. Molecular docking studies show they effectively docked with main protease of SARS-CoV-2.![]()
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Affiliation(s)
- Subham G Patel
- Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388120 Gujarat India
| | - Ruturajsinh M Vala
- Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388120 Gujarat India
| | - Paras J Patel
- Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388120 Gujarat India
| | - Dipti B Upadhyay
- Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388120 Gujarat India
| | - V Ramkumar
- Department of Chemistry, Indian Institute of Technology, Madras India
| | - Ramesh L Gardas
- Department of Chemistry, Indian Institute of Technology, Madras India
| | - Hitendra M Patel
- Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388120 Gujarat India
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Patel SG, González-Bakker A, Vala RM, Patel PJ, Puerta A, Malik A, Sharma RK, Padrón JM, Patel HM. Microwave-assisted multicomponent synthesis of antiproliferative 2,4-dimethoxy-tetrahydropyrimido[4,5- b]quinolin-6(7 H)-ones †. RSC Adv 2022; 12:30404-30415. [PMID: 36337956 PMCID: PMC9593171 DOI: 10.1039/d2ra04669e] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, we demonstrate a simple, highly efficient, rapid and convenient series of 2,4-dimethoxy-tetrahydropyrimido[4,5-b]quinolin-6(7H)-ones 4a–v. Microwave irradiation facilitates the one-pot multicomponent reaction of different aromatic aldehydes, 6-amino-2,4-dimethoxypyrimidine and dimedone using glacial acetic acid. Metal-free multicomponent synthesis, shorter reaction time, higher product yield, easy product purification without column chromatography and outstanding green credential parameters are the key features of this protocol. We analysed 4a–v against six human tumour cell lines for antiproliferative activity. 4h, 4o, 4q and 4v show good antiproliferative activity with a good in silico ADMET profile. Furthermore, 4h, 4o, 4q and 4v also show drug-likeness properties by obeying drug-like filters. Herein, we demonstrate a simple, rapid and green synthesis of 2,4-dimethoxy-THPQs under microwave irradiation and their antiproliferative activity, in silico ADMET and drug-likeness studies were carried out.![]()
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Affiliation(s)
- Subham G. Patel
- Department of Chemistry, Sardar Patel UniversityVallabh Vidyanagar388120GujaratIndia
| | - Aday González-Bakker
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La LagunaLa Laguna E-38206Spain
| | - Ruturajsinh M. Vala
- Department of Chemistry, Sardar Patel UniversityVallabh Vidyanagar388120GujaratIndia
| | - Paras J. Patel
- Department of Chemistry, Sardar Patel UniversityVallabh Vidyanagar388120GujaratIndia
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La LagunaLa Laguna E-38206Spain
| | - Apoorva Malik
- Sustainable Materials and Catalysts Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of TechnologyJodhpurIndia
| | - Rakesh K. Sharma
- Sustainable Materials and Catalysts Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of TechnologyJodhpurIndia
| | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La LagunaLa Laguna E-38206Spain
| | - Hitendra M. Patel
- Department of Chemistry, Sardar Patel UniversityVallabh Vidyanagar388120GujaratIndia
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Nicely LG, Vala RM, Upadhyay DB, Nogales J, Chi C, Banerjee S, Patel HM. One-pot two-step catalytic synthesis of 6-amino-2-pyridone-3,5-dicarbonitriles enabling anti-cancer bioactivity. RSC Adv 2022; 12:23889-23897. [PMID: 36093229 PMCID: PMC9400646 DOI: 10.1039/d2ra03579k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/15/2022] [Indexed: 11/21/2022] Open
Abstract
We report a one-pot two-step synthesis of a bioactive 6-amino-2-pyridone-3,5-dicarbonitrile derivative using natural product catalysts betaine and guanidine carbonate. Anti-cancer bioactivity was observed in specific molecules within the library of 16 derivatives. Out of the compounds, 5o had the most potent anti-cancer activity against glioblastoma cells and was selected for further study. Compound 5o showed anti-cancer properties against liver, breast, lung cancers as well as primary patient-derived glioblastoma cell lines. Furthermore, 5o in combination with specific clinically relevant small molecule inhibitors induced enhanced cytotoxicity in glioblastoma cells. Through our current work, we establish a promising 6-amino-2-pyridone-3,5-dicarbonitrile based lead compound with anti-cancer activity either on its own or in combination with specific clinically relevant small molecule kinase and proteasome inhibitors. The one-pot synthetic strategy of amino-pyridones with potent anti-cancer activity against breast, brain, liver, and lung cancer cells either alone or in combination with clinically relevant receptor tyrosine kinase and proteasome inhibitors.![]()
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Affiliation(s)
- Lynden G. Nicely
- Department of Cellular and Systems Medicine, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Ruturajsinh M. Vala
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
| | - Dipti B. Upadhyay
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
| | - Joaquina Nogales
- Department of Cellular and Systems Medicine, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Celestine Chi
- Department of Medical Biochemistry and Microbiology, Uppsala University, SE-75123 Uppsala, Sweden
| | - Sourav Banerjee
- Department of Cellular and Systems Medicine, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Hitendra M. Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
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Vala RM, Sharma MG, Patel DM, Puerta A, Padrón JM, Ramkumar V, Gardas RL, Patel HM. Synthesis and in vitro study of antiproliferative benzyloxy dihydropyrimidinones. Arch Pharm (Weinheim) 2021; 354:e2000466. [PMID: 33586256 DOI: 10.1002/ardp.202000466] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/15/2021] [Accepted: 01/21/2021] [Indexed: 11/10/2022]
Abstract
In this study, we report on antiproliferative benzyloxy dihydropyrimidinones (DHPMs) produced by the Biginelli reaction of benzyloxy benzaldehyde, urea, and diverse 1,3-diones. The reaction was catalyzed by lanthanum triflate and completed within 1-1.5 h, with 74-97% yield. The antiproliferative assay was carried out for all synthesized dihydropyrimidinones against six human solid tumor cell lines. Six compounds showed good antiproliferative activity with GI50 values below 5 μM. Among all the synthesized compounds, the most potent derivative showed good antiproliferative activity against all cell lines with GI50 values in the range of 1.1-3.1 μM. These DHPMs comply with druglikeness. Furthermore, ADMET prediction and the effect of P-glycoprotein on the antiproliferative activity were also studied. Overall, our method allows eco-friendly access to benzyloxy DHPMs as potential anticancer drugs.
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Affiliation(s)
- Ruturajsinh M Vala
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Mayank G Sharma
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Divyang M Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Venkatachalam Ramkumar
- Department of Chemistry, Indian Institute of Technology-Madras, Chennai, Tamil Nadu, India
| | - Ramesh L Gardas
- Department of Chemistry, Indian Institute of Technology-Madras, Chennai, Tamil Nadu, India
| | - Hitendra M Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
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Sharma MG, Vala RM, Patel HM. Pyridine-2-carboxylic acid as an effectual catalyst for rapid multi-component synthesis of pyrazolo[3,4-b]quinolinones. RSC Adv 2020; 10:35499-35504. [PMID: 35515671 PMCID: PMC9056938 DOI: 10.1039/d0ra06738e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/19/2020] [Indexed: 01/31/2023] Open
Abstract
Green synthesis of pyrazolo[3,4-b]quinolinones was designed using bioproduct pyridine-2-carboxylic acid (P2CA) as a green and efficient catalyst. The multi-component reaction of aldehydes, 1,3-cyclodiones and 5-amino-1-phenyl-pyrazoles regioselectively produced pyrazolo[3,4-b]quinolinones in excellent yield (84–98%). Recyclization of the catalyst was also investigated. The electronic effect of the various substituents in aromatic rings indicated that the reaction proceeded through the carbocation intermediate. This newly designed protocol very quickly constructed products conventionally under milder conditions. Green synthesis of pyrazolo[3,4-b]quinolinones was designed using bioproduct pyridine-2-carboxylic acid (P2CA) as a green and efficient catalyst.![]()
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Sharma MG, Pandya J, Patel DM, Vala RM, Ramkumar V, Subramanian R, Gupta VK, Gardas RL, Dhanasekaran A, Patel HM. One-Pot Assembly for Synthesis of 1,4-Dihydropyridine Scaffold and Their Biological Applications. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1686401] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mayank G. Sharma
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Juhee Pandya
- Department of Bioscience, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Divyang M. Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Ruturajsinh M. Vala
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - V. Ramkumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | | | - Vivek K. Gupta
- Department of Physics and Electronics, University of Jammu, Jammu, Jammu and Kashmir, India
| | - Ramesh L. Gardas
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | | | - Hitendra M. Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
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Patel DM, Vala RM, Sharma MG, Rajani DP, Patel HM. A Practical Green Visit to the Functionalized [1,2,4]Triazolo[5,1-b
]quinazolin-8(4H
)one Scaffolds Using the Group-Assisted Purification (GAP) Chemistry and Their Pharmacological Testing. ChemistrySelect 2019. [DOI: 10.1002/slct.201803605] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Divyang M. Patel
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Ruturajsinh M. Vala
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Mayank G. Sharma
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
| | - Dhanji P. Rajani
- Microcare Laboratory and Tuberculosis Diagnosis & Research Center; Surat India
| | - Hitendra M. Patel
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar 388120, Gujarat India
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Vala RM, Patel DM, Sharma MG, Patel HM. Impact of an aryl bulky group on a one-pot reaction of aldehyde with malononitrile and N-substituted 2-cyanoacetamide. RSC Adv 2019; 9:28886-28893. [PMID: 35529659 PMCID: PMC9071202 DOI: 10.1039/c9ra05975j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 08/29/2019] [Indexed: 11/21/2022] Open
Abstract
In this study, we successfully explored the effect of steric hindrance on the one-pot reaction of different aryl aldehydes with malononitrile and N-substituted 2-cyanoacetamide in the presence of piperidinium acetate as the catalyst. It involved the Knoevenagel condensation of the aldehyde and malononitrile to produce arylidene malononitrile as an intermediate, which was further treated with N-substituted 2-cyanoacetamide to give 6-amino-2-pyridone-3,5-dicarbonitrile derivatives when the less steric bulky group was involved. High steric hindrance changed the earlier reaction route and gave N-substituted 2-cyanoacrylamides via a slower route. Impact of aryl bulky group on the one-pot reaction of aldehyde with malononitrile and N-substituted 2-cyanoacetamide is examined in the presence of piperidinium acetate as reusable catalyst.![]()
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Sharma MG, Vala RM, Patel DM, Lagunes I, Fernandes MX, Padrón JM, Ramkumar V, Gardas RL, Patel HM. Anti‐Proliferative 1,4‐Dihydropyridine and Pyridine Derivatives Synthesized through a Catalyst‐Free, One‐Pot Multi‐Component Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201802537] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mayank G. Sharma
- Sardar Patel UniversityDepartment of ChemistryUniversity Campus Vallabh Vidyanagr- 388 120 Gujarat India
| | - Ruturajsinh M. Vala
- Sardar Patel UniversityDepartment of ChemistryUniversity Campus Vallabh Vidyanagr- 388 120 Gujarat India
| | - Divyang M. Patel
- Sardar Patel UniversityDepartment of ChemistryUniversity Campus Vallabh Vidyanagr- 388 120 Gujarat India
| | - Irene Lagunes
- BioLabInstituto Universitario de Bio-Orgánica Antonio GonzálezCIBICANUniversidad de La Laguna Avda. Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | - Miguel X. Fernandes
- BioLabInstituto Universitario de Bio-Orgánica Antonio GonzálezCIBICANUniversidad de La Laguna Avda. Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | - José M. Padrón
- Sardar Patel UniversityDepartment of ChemistryUniversity Campus Vallabh Vidyanagr- 388 120 Gujarat India
- BioLabInstituto Universitario de Bio-Orgánica Antonio GonzálezCIBICANUniversidad de La Laguna Avda. Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
- Present address: BioLabInstituto Universitario de Bio-Orgánica Antonio González, CIBICAN, Universidad de La Laguna Avda. Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | | | - Ramesh L. Gardas
- Department of ChemistryIndian Institute of Technology Madras India
| | - Hitendra M. Patel
- Sardar Patel UniversityDepartment of ChemistryUniversity Campus Vallabh Vidyanagr- 388 120 Gujarat India
- Present address: Department of ChemistrySardar Patel University, University Campus, Vallabh Vidyanagar 388 120 Gujarat India
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