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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] [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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Aljuhani A, Aouad MR, Rezki N, Aljaldy OA, Al-Sodies SA, Messali M, Ali I. Novel pyridinium based ionic liquids with amide tethers: Microwave assisted synthesis, molecular docking and anticancer studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.143] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Moloi S, Maddila S, Jonnalagadda SB. Microwave-irradiated one-pot synthesis of quinoline derivatives catalyzed by triethylamine. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2986-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aouad MR, Rezki N, Messali M, El Ashry ESH. Synthesis of bis-acyclonucleoside analogues bearing benzothienyl-1,2,4-Triazol-3-Yl-disulfide under conventional and microwave methods. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2013; 32:28-41. [PMID: 23360293 DOI: 10.1080/15257770.2012.751491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The oxidation of 5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole-3-thiol (1) with a solution of iodine and potassium iodide at room temperature afforded [5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole-3-yl]disulfide (2). In contrast, when the reaction mixture was heated or irradiated by MW, an unexpected additional product was obtained and identified as 3-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole (3); the ratio of products was 3:1. The preferred conformer of 2 was deduced from the theoretical calculation. The alkylation of compounds 2 and 3 with epichlorohydrin and hydroxyalkylating agents gave the corresponding N,N-bis- and N-acyclonucleosides analogues 8-15.
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Affiliation(s)
- Mohamed R Aouad
- Department of Chemistry, Taibah University, Madinah, Saudi Arabia.
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El-Sayed HA, Moustafa AH, Haikal AEFZ, Abu-El-Halawa R, El Ashry ESH. Synthesis, antitumor and antimicrobial activities of 4-(4-chlorophenyl)-3-cyano-2-(β-O-glycosyloxy)-6-(thien-2-yl)-nicotinonitrile. Eur J Med Chem 2011; 46:2948-54. [DOI: 10.1016/j.ejmech.2011.04.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 04/05/2011] [Accepted: 04/05/2011] [Indexed: 11/29/2022]
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Belen’kii L, Gramenitskaya V, Evdokimenkova Y. The Literature of Heterocyclic Chemistry, Part X, 2005–2007. ADVANCES IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385464-3.00001-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Beldi R, Atta KF, Aboul-Ela S, El Ashry ESH. Efficient diverse approach for quinoxaline-derived glycosylated and morphinylated analogs. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Moustafa AH, Morsy HA, Assy MG, Haikal AZ. Synthesis and antimicrobial activity of some S-beta-D-glucosides of 4-mercaptopyrimidine. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2010; 28:835-45. [PMID: 20183622 DOI: 10.1080/15257770903172639] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
5-Acetyl-2-aryl-6-methyl-4-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosylmercapto)pyramidines 3a-c were obtained by the reaction of 5-acetyl-2-aryl-6-methyl-pyrimidine thiol 1a-c with 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl bromide (2) in aq. KOH/acetone. The reaction of 1a-c with peracetylated galactose 5 and peracetylated ribose 8 under MW irradiation gave 5-acetyl-2-aryl-6-methyl-4-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosylmercapto)pyrimidine 6a-c and 5-acetyl-2-aryl-6-methyl-4-(2,3,5-tri-O-acetyl-beta-D-ribofuranosylmercapto)pyrimidines 9a-c. The deprotection of 3a-c, 6a-c, and 9a-c in the presence of methanol and TEA/H(2)O yielded the deprotected products 4a-c, 7a-c, and 10a-c. The structures of the compounds were confirmed by using IR, (1)H, (13)C spectra and microanalysis. Selected members of these compounds were screened for antimicrobial activity.
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Affiliation(s)
- A H Moustafa
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt. ah hu
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El-Sayed HA, Moustafa AH, Haikal AZ, El-Ashry ESH. Synthesis and antibacterial activity of some glucosyl- and ribosyl-pyridazin-3-ones. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2009; 28:184-92. [PMID: 19333857 DOI: 10.1080/15257770902831011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Reaction of 5,6-diphenylpyridazin-3(2H)-one 1a,b with 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl bromide 2 in K(2)CO(3)/acetone gave 5,6-diphenyl-N(2)-(2',3',4',6'-tetra-O-acetyl-beta-D-glucopyranosyl)pyridazin-3-one 5a,b. The same nucleosides 5a,b were obtained by reaction of 1a,b with peracetylated glucose 3 under MW irradiation. Mercuration of 1a,b followed by reaction with glucosyl bromide 2 gave the same nucleosides 5a,b. The riboside 4-cyano-5,6-diphenyl-N(2)-(2',3',5'-tri-O-acetyl-beta-D-ribofuranosyl)-pyridazin-3-one 8 was obtained by reaction of 4-cyanopyridazinone 1b with peracetylated ribose 7 under MW irradiation. The deprotected nucleosides 6a,b and 9 were obtained by stirring of 5a,b and 8 in methanol and TEA/H(2)O. The structure was confirmed using (1)H and (13)C-NMR spectra. Selected members of these compounds were screened for antibacterial activity.
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Affiliation(s)
- H A El-Sayed
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
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Dolzhenko AV, Pastorin G, Dolzhenko AV, Chui WK. An aqueous medium synthesis and tautomerism study of 3(5)-amino-1,2,4-triazoles. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.172] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Regioselectivity in the glycosylation of 5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole-3-thiol. Carbohydr Res 2009; 344:725-33. [DOI: 10.1016/j.carres.2009.01.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2008] [Revised: 01/22/2009] [Accepted: 01/29/2009] [Indexed: 11/21/2022]
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Salerno A, Perillo I, Verónica Corona M, Cristina Caterina M. An Efficient Synthesis of 1-Acyl-3-arylimidazolidines Catalyzed by Montmorillonite K-10 Clay under Microwave Irradiation. HETEROCYCLES 2009. [DOI: 10.3987/com-08-11565] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Aouad MR, Rezki NT, El Ahsry ESH. Regioselectivity of the reactions of 4,5-diphenylimidazole-2-thione with 1-chloro-2,3-epoxy-propane and 1-bromo-propene, efficient precursors for imidazo[2,1-b]thiazine and thiazole. Effect of microwave and solid support. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450511] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Solar thermochemical reactions II1: Synthesis of 2-aminothiophenes via Gewald reaction induced by solar thermal energy. CHINESE CHEM LETT 2008. [DOI: 10.1016/j.cclet.2008.04.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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El‐Ashry ESH, Rashed N, Awad LF, Ramadan ES, Abdel‐Maggeed SM, Rezki N. Synthesis of 5‐Aryl‐3‐Glycosylthio‐4‐Phenyl‐4H‐1,2,4‐Triazoles and Their Acyclic Analogs Under Conventional and Microwave Conditions. J Carbohydr Chem 2008. [DOI: 10.1080/07328300802030795] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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El-Gendy AA, Said MM, Ghareb N, Mostafa YM, El-Ashry ESH. Synthesis and Biological Activity of Functionalized Indole-2-carboxylates, Triazino- and Pyridazino-indoles. Arch Pharm (Weinheim) 2008; 341:294-300. [DOI: 10.1002/ardp.200700161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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El Ashry ESH, Awad LF, Abdel Hamid HM, Atta AI. Microwave-assisted organic synthesis of 3-(D-Gluco-pentitol-1-yl)-1H-1,2,4-triazole. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 25:325-35. [PMID: 16629125 DOI: 10.1080/15257770500544545] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The condensation of D-glucono- and D-galactono-1,5-lactone and thiocarbohydrazide to give 3-(D-alditol-1-yl)-4-amino-5-mercapto-1,2,4-triazoles 4 and 5 is accelerated by the use of microwave-assisted organic reaction (MAOS). The deamination and dethiolation of compound 4 to give 6 was also accelerated by the use of MAOS. Condensation of 4 and 5 with p-nitrobenzaldehyde afforded Schiff bases 8 and 9, respectively, within 4 min under microwave irradiation (MWI), whereas with ethyl chloroacetate the thioalkylated products 14 and 15 were obtained in 8 min. The structures of the synthesized compounds were confirmed by 1H NMR, 2D NMR, and mass spectra.
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Affiliation(s)
- E S H El Ashry
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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El Ashry ESH, Atta KF, Aboul‐Ela S, Beldi R. MAOS of Sugar Phenylosazones and their Derived Pyrazoles and Triazoles. J Carbohydr Chem 2007. [DOI: 10.1080/07328300701787164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ashry ESHE, Kassem AA, Abdel-Hamid H, Louis FF, Khattab SAN, Aouad MR. Novel regioselective formation of S- and N-hydroxyl-alkyls of 5-(3-chlorobenzo[b]thien-2-yl)-3-mercapto-4H-1,2,4-triazole and a facile synthesis of triazolo-thiazoles and thiazolo-triazoles. Role of catalyst and microwave. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2007; 26:437-51. [PMID: 17578742 DOI: 10.1080/15257770701426187] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Regioselective alkylation of 5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole (1) with hydroxy alkylating agents 2, 3, 13, and the 2,3-O-isopropylidene-1-O-(p-tolylsulfonyl)-glycerol (10) afforded the corresponding S-alkylated derivatives 6, 7, 11, and 14 under both conventional and microwave irradiation conditions; bentonite as a solid support gave better results, with no change in regioselectivity. A facile intramolecular dehydrative ring closure of 6, 7, 11, and 14 using K(2)CO(3) in DMF afforded the corresponding fused triazolo-thiazines and thiazolo-triazole 17-19. The isopropylidenes and acetyl derivatives of the products were prepared.
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Affiliation(s)
- E S H El Ashry
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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Ashry ESHE, Rashed N, Awad LF, Ramadan E, Abdel-Maggeed SM, Rezki N. Novel regioselective hydroxyl-alkylation of 4,5-diphenylimidazole-2-thione and a competitive intramolecular ring closure of the S-hydroxyalkyl-imidazoles to imidazo[2,1-b]thiazines and thiazoles. Role of catalyst, microwave irradiation, and solid support. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2007; 26:423-35. [PMID: 17578741 DOI: 10.1080/15257770701426179] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Under both conventional method (CM) and microwave (MW) irradiation (MWI) conditions, alkylation of 4,5-diphenylimidazole-2-thione (1) with halogeno-alkanols 2 or 5, chloroglycerol 11 and 2,3-O-isopropylidene-1-O-(p-tolylsulfonyl)-glycerol (8) in presence of sodium ethoxide or sodium acetate in alcohol afforded regioselectively the corresponding S-alkylated analogues 3, 6, 9, and 12; they also were obtained using MW in absence and presence of bentonite as solid support with no change in regioselectivity. In the presence of potassium carbonate in DMF, the bisalkylated analogues 4, 7, 10, and 13 were obtained except in case of compound 13 where it was accompanied with the imidazothiazine 14. A convenient approach for imidazo-[2,1-b]thiazines and thiazoles 14-16 could be achieved by intramolecular dehydrative ring closure of the S-hydroxyalkylated imidazoles 3, 6, and 12 using potassium carbonate in DMF under both conventional and microwave methods. Isopropylidenation of 12 and 13 and deprotection of 9 and 10 also were investigated.
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Affiliation(s)
- E S H El Ashry
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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Ashry ESHE, Awad LF, Abdel Hamid H, Atta AI. MAOS ofD‐Gluconic Acid,D‐Glucono‐1,4‐ and 1,5‐Lactones, Esters, Hydrazides, and Benzimidazoles Thereof. J Carbohydr Chem 2007. [DOI: 10.1080/07328300701540258] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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El Ashry ESH, Atta KF, Aboul‐Ela S, Beldi R. MAOS of Quinoxalines, Conjugated Pyrazolylquinoxalines and Fused Pyrazoloquinoxalines from l‐Ascorbic and d‐Isoascorbic Acid. J Carbohydr Chem 2007. [DOI: 10.1080/07328300701252359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- El Sayed H. El Ashry
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Kamal F. Atta
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Salah Aboul‐Ela
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Razika Beldi
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
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Ashry ESHE, Rashed N, Abdel-Rahman A, Awad LF, Rasheed HA. Synthesis of 2-bromomethyl-3-hydroxy-2-hydroxymethyl-propyl pyrimidine and theophylline nucleosides under microwave irradiation. Evaluation of their activity against hepatitis B virus. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2006; 25:925-39. [PMID: 16901823 DOI: 10.1080/15257770600793919] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Alkylation of 2-methylthiopyrimidin-4(1H)-one (1a) and its 5(6)-alkyl derivatives 1b-d as well as theophylline (7) with 2,2-bis(bromomethyl)-1,3-diacetoxypropane (2) under microwave irradiation gave the corresponding acyclonucleosides 1-[(3-acetoxy-2-acetoxymethyl-2-bromomethyl)prop-1-yl]-2-methyl-thio pyrmidin-4(1H)-ones 3a-d and 7-[(3-acetoxy-2-acetoxymethyl-2-bromomethyl)prop-1-yl]theophylline (8), which upon further irradiation gave the double-headed acyclonucleosides 1,1 '-[(2,2-diacetoxymethyl)-1,3-propylidene]-bis[(2-(methylthio)-pyrimidin-4(1H)-ones] 4a-c, and 7,7 '-[(2,2-diacetoxymethyl)-1,3-propylidene]-bis(theophylline) (9). The deacetylated derivatives were obtained by the action of sodium methoxide. The activity of deacetylated nucleosides against Hepatitis B virus was evaluated. Compound 5b showed moderate inhibition activity against HBV with mild cytotoxicity.
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Affiliation(s)
- E S H El Ashry
- Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt.
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El Ashry ESH, Awad LF, Hamid HMA, Atta AI. Synthesis of Interglycosidically S‐Linked 1‐Thio‐Oligosaccharides Under Microwave Irradiation. J Carbohydr Chem 2006. [DOI: 10.1080/07328300500282540] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- El Sayed H. El Ashry
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Laila F. Awad
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - H. M. Abdel Hamid
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Atta I. Atta
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
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Ashry EE, Kassem A, Ramadan E. Microwave Irradiation for Accelerating Organic Reactions – Part II: Six-, Seven-Membered, Spiro, and Fused Heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2006. [DOI: 10.1016/s0065-2725(05)90001-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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