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Alzahrani AY, Gomha SM, Zaki ME, Farag B, Abdelgawad FE, Mohamed MA. Chitosan-sulfonic acid-catalyzed green synthesis of naphthalene-based azines as potential anticancer agents. Future Med Chem 2024; 16:647-663. [PMID: 38385167 DOI: 10.4155/fmc-2023-0351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/05/2024] [Indexed: 02/23/2024] Open
Abstract
Aim: This study focuses on advancing green chemistry in anticancer drug discovery, particularly through the synthesis of azine derivatives with a naphthalene core using CS-SO3H as a catalyst. Methods: Novel benzaldazine and ketazine derivatives were synthesized using (E)-(naphthalen-1-ylmethylene)hydrazine and various carbonyl compounds. The methods employed included thermal and grinding techniques, utilizing CS-SO3H as an eco-friendly and cost-effective catalyst. Results: The approach resulted in high yields, short reaction times and demonstrated catalyst reusability. Cytotoxicity tests highlighted compounds 3b, 11 and 13 as potent against the HEPG2-1. Conclusion: This study successfully aligns with the objectives of eco-conscious drug development in organic chemistry. Molecular docking and in silico studies further indicate the potential of these ligands as antitumor medicines, with favorable oral bioavailability properties.
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Affiliation(s)
- Abdullah Ya Alzahrani
- Department of Chemistry, Faculty of Science & Arts, King Khalid University, Mohail Assir, Saudi Arabia
| | - Sobhi M Gomha
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah, 42351, Saudi Arabia
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Magdi Ea Zaki
- Department of Chemistry, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Saudi Arabia
| | - Basant Farag
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Fathy E Abdelgawad
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah, 42351, Saudi Arabia
| | - Mahmoud A Mohamed
- Technology of Textile Department, Faculty of Technology & Education, Beni-Suef University, Beni-Suef, 62521, Egypt
- Chemistry Department, Faculty of Science & Humanity study-Afif, Shaqra University, 11911, Saudi Arabia
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Mendogralo EY, Nesterova LY, Nasibullina ER, Shcherbakov RO, Tkachenko AG, Sidorov RY, Sukonnikov MA, Skvortsov DA, Uchuskin MG. The Synthesis and Biological Evaluation of 2-(1 H-Indol-3-yl)quinazolin-4(3 H)-One Derivatives. Molecules 2023; 28:5348. [PMID: 37513221 PMCID: PMC10384628 DOI: 10.3390/molecules28145348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/03/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
The treatment of many bacterial diseases remains a significant problem due to the increasing antibiotic resistance of their infectious agents. Among others, this is related to Staphylococcus aureus, especially methicillin-resistant S. aureus (MRSA) and Mycobacterium tuberculosis. In the present article, we report on antibacterial compounds with activity against both S. aureus and MRSA. A straightforward approach to 2-(1H-indol-3-yl)quinazolin-4(3H)-one and their analogues was developed. Their structural and functional relationships were also considered. The antimicrobial activity of the synthesized compounds against Mycobacterium tuberculosis H37Rv, S. aureus ATCC 25923, MRSA ATCC 43300, Candida albicans ATCC 10231, and their role in the inhibition of the biofilm formation of S. aureus were reported. 2-(5-Iodo-1H-indol-3-yl)quinazolin-4(3H)-one (3k) showed a low minimum inhibitory concentration (MIC) of 0.98 μg/mL against MRSA. The synthesized compounds were assessed via molecular docking for their ability to bind long RSH (RelA/SpoT homolog) proteins using mycobacterial and streptococcal (p)ppGpp synthetase structures as models. The cytotoxic activity of some synthesized compounds was studied. Compounds 3c, f, g, k, r, and 3z displayed significant antiproliferative activities against all the cancer cell lines tested. Indolylquinazolinones 3b, 3e, and 3g showed a preferential suppression of the growth of rapidly dividing A549 cells compared to slower growing fibroblasts of non-tumor etiology.
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Affiliation(s)
- Elena Y Mendogralo
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
| | - Larisa Y Nesterova
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | | | - Roman O Shcherbakov
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
| | - Alexander G Tkachenko
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | - Roman Y Sidorov
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | - Maxim A Sukonnikov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Dmitry A Skvortsov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
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Ibrahim MS, Farag B, Y. Al-Humaidi J, Zaki MEA, Fathalla M, Gomha SM. Mechanochemical Synthesis and Molecular Docking Studies of New Azines Bearing Indole as Anticancer Agents. Molecules 2023; 28:3869. [PMID: 37175279 PMCID: PMC10180502 DOI: 10.3390/molecules28093869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 05/15/2023] Open
Abstract
The development of new approaches for the synthesis of new bioactive heterocyclic derivatives is of the utmost importance for pharmaceutical industry. In this regard, the present study reports the green synthesis of new benzaldazine and ketazine derivatives via the condensation of various carbonyl compounds (aldehydes and ketones with the 3-(1-hydrazineylideneethyl)-1H-indole using the grinding method with one drop of acetic acid). Various spectroscopic techniques were used to identify the structures of the synthesized derivatives. Furthermore, the anticancer activities of the reported azine derivatives were evaluated against colon, hepatocellular, and breast carcinoma cell lines using the MTT technique with doxorubicin as a reference medication. The findings suggested that the synthesized derivatives exhibited potential anti-tumor activities toward different cell lines. For example, 3c, 3d, 3h, 9, and 13 exhibited interesting activity with an IC50 value of 4.27-8.15 µM towards the HCT-116 cell line as compared to doxorubicin (IC50 = 5.23 ± 0.29 µM). In addition, 3c, 3d, 3h, 9, 11, and 13 showed excellent cytotoxic activities (IC50 = 4.09-9.05 µM) towards the HePG-2 cell line compared to doxorubicin (IC50 = 4.50 ± 0.20 µM), and 3d, 3h, 9, and 13 demonstrated high potency (IC50 = 6.19-8.39 µM) towards the breast cell line (MCF-7) as compared to the reference drug (IC50 = 4.17 ± 0.20 µM). The molecular interactions between derivatives 3a-h, 7, 9, 11, 13, and the CDK-5 enzyme (PDB ID: 3IG7) were studied further using molecular docking indicating a high level of support for the experimental results. Furthermore, the drug-likeness analysis of the reported derivatives indicated that derivative 9 (binding affinity = -8.34 kcal/mol) would have a better pharmacokinetics, drug-likeness, and oral bioavailability as compared to doxorubicin (-7.04 kcal/mol). These results along with the structure-activity relationship (SAR) of the reported derivatives will pave the way for the design of additional azines bearing indole with potential anticancer activities.
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Affiliation(s)
- Mohamed S. Ibrahim
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia; (M.S.I.); (M.F.)
| | - Basant Farag
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt;
| | - Jehan Y. Al-Humaidi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Magdi E. A. Zaki
- Department of Chemistry, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia;
| | - Maher Fathalla
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia; (M.S.I.); (M.F.)
| | - Sobhi M. Gomha
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia; (M.S.I.); (M.F.)
- Department of Chemistry, Faculty of Science, Cairo University, Cairo 12613, Egypt
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Borah B, Swain S, Patat M, Chowhan LR. Recent advances and prospects in the organocatalytic synthesis of quinazolinones. Front Chem 2022; 10:991026. [PMID: 36186594 PMCID: PMC9515322 DOI: 10.3389/fchem.2022.991026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 07/26/2022] [Indexed: 11/20/2022] Open
Abstract
Quinazolinone, a bicyclic compound, comprises a pyrimidine ring fused at 4´ and 8´ positions with a benzene ring and constitutes a substantial class of nitrogen-containing heterocyclic compounds on account of their frequent existence in the key fragments of many natural alkaloids and pharmaceutically active components. Consequently, tremendous efforts have been subjected to the elegant construction of these compounds and have recently received immense interest in synthetic and medicinal chemistry. The domain of synthetic organic chemistry has grown significantly over the past few decades for the construction of highly functionalized therapeutically potential complex molecular structures with the aid of small organic molecules by replacing transition-metal catalysis. The rapid access to this heterocycle by means of organocatalytic strategy has provided new alternatives from the viewpoint of synthetic and green chemistry. In this review article, we have demonstrated a clear presentation of the recent organocatalytic synthesis of quinazolinones of potential therapeutic interests and covered the literature from 2015 to date. In addition to these, a clear presentation and understanding of the mechanistic aspects, features, and limitations of the developed reaction methodologies have been highlighted.
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Al-Humaidi JY, Badrey MG, Aly AA, Nayl AA, Zayed MEM, Jefri OA, Gomha SM. Evaluation of the Binding Relationship of the RdRp Enzyme to Novel Thiazole/Acid Hydrazone Hybrids Obtainable through Green Synthetic Procedure. Polymers (Basel) 2022; 14:polym14153160. [PMID: 35956675 PMCID: PMC9371204 DOI: 10.3390/polym14153160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/17/2022] [Accepted: 07/21/2022] [Indexed: 02/01/2023] Open
Abstract
The viral RNA-dependent RNA polymerase (RdRp) complex is used by SARS-CoV-2 for genome replication and transcription, making RdRp an interesting target for developing the antiviral treatment. Hence the current work is concerned with the green synthesis, characterization and docking study with the RdRp enzyme of the series of novel and diverse hydrazones and pyrazoles. 4-Methyl-2-(2-(1-phenylethylidene)hydrazineyl)thiazole-5-carbohydrazide was prepared and then condensed with different carbonyl compounds (aldehydes and ketones either carbocyclic aromatic or heterocyclic) afforded the corresponding hydrazide-hydrazones. The combination of the acid hydrazide with bifunctional reagents such as acetylacetone, β-ketoesters (ethyl acetoacetate and ethyl benzoylacetate) resulted in the formation of pyrazole derivatives. The synthesized compounds were all obtained through grinding method using drops of AcOH. Various analytical and spectral analyses were used to determine the structures of the prepared compounds. Molecular Operating Environment (MOE®) version 2014.09 was used to estimate interactions between the prepared thiazole/hydrazone hybrids and RdRp obtained from the protein data bank (PDB: 7bv2) using enzyme-ligand docking for all synthesized derivatives and Remdesivir as a reference. Docking results with the RdRp enzyme revealed that the majority of the investigated drugs bind well to the enzyme via various types of interactions in comparison with the reference drug.
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Affiliation(s)
- Jehan Y. Al-Humaidi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh 11671, Saudi Arabia;
| | - Mohamed G. Badrey
- Chemistry Department, Faculty of Science, Fayoum University, El-Fayoum 63514, Egypt;
- Chemistry Department, Faculty of Science and Arts-Almandaq, Al-Baha University, Al-Baha 65515, Saudia Arabia
| | - Ashraf A. Aly
- Chemistry Department, Faculty of Science, Organic Division, Minia University, El-Minia 61519, Egypt;
| | - AbdElAziz A. Nayl
- Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Saudi Arabia
- Correspondence: or (A.A.N.); or (S.M.G.)
| | - Mohie E. M. Zayed
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.E.M.Z.); (O.A.J.)
| | - Ohoud A. Jefri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.E.M.Z.); (O.A.J.)
| | - Sobhi M. Gomha
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
- Correspondence: or (A.A.N.); or (S.M.G.)
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Chehab S, Merroun Y, Ghailane T, Ghailane R, Boukhris S, Souizi A. Mono-Ammonium Phosphate Fertilizer Modified by Cadmium: An Efficient and Recyclable Catalyst for 2,3-Dihydroquinazolin-4(1H)-One Derivatives Synthesis. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1977348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Soukaina Chehab
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Youssef Merroun
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Tourya Ghailane
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Rachida Ghailane
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Said Boukhris
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Abdelaziz Souizi
- Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
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Demirbas N, Demirbas A. Organocatalyzed Heterocyclic Transformations In Green Media: A Review. CURRENT ORGANOCATALYSIS 2021. [DOI: 10.2174/2213337207999200805115813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Background:
Since the discovery of metal-free catalysts or organocatalysts about twenty
years ago, a number of small molecules with different structures have been used to accelerate organic
transformations. With the development of environmental awareness, to obtain highly efficient
scaffolds, scientists have directed their studies towards synthetic methodologies that minimize
or preferably eliminate the formation of waste, avoid toxic solvents and reagents and use renewable
starting materials as far as possible.
Methods:
In this connection, the organocatalytic reactions providing efficiency and selectivity for
most of the transformations have become an endless topic in organic chemistry since several advantages
from both practical and environmental standpoints. Organocatalysts contributing to the transformation
of reactants into products with the least possible waste production, have been serving the
concept of green chemistry.
Results and Conclusion:
Organocatalysts have been classified based on their binding capacity to
the substrate with covalent or noncovalent interactions involving hydrogen bonding and electrostatic
interaction. Diverse types of small organic compounds including proline and its derivatives,
phase-transfer catalysts, (thio)urease, phosphoric acids, sulfones, N-oxides, guanidines, cinchona
derivatives, aminoindanol, and amino acids have been utilized as hydrogen bonding organocatalysts
in different chemical transformations.
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Affiliation(s)
- Neslihan Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon, Turkey
| | - Ahmet Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon, Turkey
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Mitra B, Chandra Pariyar G, Ghosh P. β-Cyclodextrin: a supramolecular catalyst for metal-free approach towards the synthesis of 2-amino-4,6-diphenylnicotinonitriles and 2,3-dihydroquinazolin-4(1 H)-one. RSC Adv 2021; 11:1271-1281. [PMID: 35424112 PMCID: PMC8693512 DOI: 10.1039/d0ra09562a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/08/2020] [Indexed: 11/21/2022] Open
Abstract
β-Cyclodextrin, a green and widespread supramolecular catalyst, has been explored as a highly proficient promoter for the metal-free one-pot multi-component synthesis of a vast range of highly functionalized bioactive heterocyclic moiety, 2-amino-4,6-diphenylnicotinonitriles and 2,3-dihydroquinazolin-4(1H)-one, from easily available precursor aldehydes. The main endeavor of these protocols is to explore this organic supramolecule in one-pot multi-component synthesis. Absence of metal catalyst or toxic acid and harsh reaction conditions, excellent functional group tolerance, inexpensive, greener and environmentally safe protocol are the key advantages of this work.
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Affiliation(s)
- Bijeta Mitra
- Department of Chemistry, University of North Bengal Dist. Darjeeling West Bengal India +91 353 2699001 +91 353 2776381
| | - Gyan Chandra Pariyar
- Department of Food Technology, University of North Bengal Dist. Darjeeling West Bengal India
| | - Pranab Ghosh
- Department of Chemistry, University of North Bengal Dist. Darjeeling West Bengal India +91 353 2699001 +91 353 2776381
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Naturally occurring organic acids for organocatalytic synthesis of pyrroles via Paal–Knorr reaction. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04260-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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5-Sulphosalicylic acid: An expeditious organocatalyst for one-pot synthesis of 2H-indazolo[2,1-b]phthalazine-triones. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-3056-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Synthesis, characterization and catalytic application of tributyl(carboxymethyl)phosphonium bromotrichloroferrate as a new magnetic ionic liquid for the preparation of 2,3-dihydroquinazolin-4(1H)-ones and 4H-pyrimidobenzothiazoles. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04183-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Ansari MI, Hussain MK, Hajela K. Silica-Impregnated Polyphosphoric Acid Catalyzed an Eco-Friendly Rapid Synthesis of Functionalized Tetrahydroquinolines and Quinazolin-4-ones in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201703192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mohd. Imran Ansari
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension; Sitapur Road Uttar Pradesh Lucknow-226031 India
- Department of Pharmaceutical Sciences; University of Maryland School of Pharmacy, PHN706; 20 N. Pine Street Baltimore MD-21201 USA
| | - Mohd. Kamil Hussain
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension; Sitapur Road Uttar Pradesh Lucknow-226031 India
- Department of Chemistry; Government Raza Post graduate College; Rampur 244901 India
| | - K. Hajela
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension; Sitapur Road Uttar Pradesh Lucknow-226031 India
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SOUIZI A, MERROUN Y, CHEHAB S, GHAILANE T, BOUKHRIS S, GHAILANE R, HABBADI N, HASSIKOU A, LAKHRISSI B. An Effective Method to Synthesize 2,3-Dihydroquinazolin-4(1H)-One Using Phosphate Fertilizers (MAP, DAP and TSP) as Green Heterogeneous Catalysts. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2018. [DOI: 10.18596/jotcsa.363818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Trifluoroethanol and liquid-assisted grinding method: a green catalytic access for multicomponent synthesis. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3206-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Green and cost effective protocol for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines by using sawdust sulphonic acid. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3059-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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