1
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Salem ME, Abdullah AH, Zaki MEA, Abdelhamid IA, Elwahy AHM. Utility of 2-Chloro- N-arylacetamide and 1,1'-(Piperazine-1,4-diyl)bis(2-chloroethanone) as Versatile Precursors for Novel Mono- and Bis[thienopyridines]. ACS OMEGA 2024; 9:10146-10159. [PMID: 38463260 PMCID: PMC10918660 DOI: 10.1021/acsomega.3c06653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 01/24/2024] [Accepted: 02/05/2024] [Indexed: 03/12/2024]
Abstract
A series of novel thieno[2,3-b]pyridines linked to N-aryl carboxamides or (carbonylphenoxy)-N-(aryl)acetamides, as well as bis(thieno[2,3-b]pyridines) linked to piperazine core via methanone or carbonylphenoxyethanone units, were synthesized by treating the appropriate chloroacetyl- or bis-bromoacetyl derivatives with 2-mercaptonicotinonitrile derivatives in ethanolic sodium ethoxide at reflux. The spectral data were used to determine the compositions of novel compounds.
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Affiliation(s)
- Mostafa E Salem
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Abbas H Abdullah
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Magdi E A Zaki
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Ismail A Abdelhamid
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ahmed H M Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
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2
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Kaukulis M, Rucins M, Lacis D, Plotniece A, Sobolev A. Development of Self-Assembling bis-1,4-Dihydropyridines: Detailed Studies of Bromination of Four Methyl Groups and Bromine Nucleophilic Substitution. Molecules 2023; 29:161. [PMID: 38202746 PMCID: PMC10779897 DOI: 10.3390/molecules29010161] [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: 12/02/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
One of the most important steps in the synthesis of 1,4-dihydropyridine (1,4-DHP) amphiphiles is the bromination of methyl groups in positions 2 and 6 of the entire ring. However, up to now, only N-bromosuccinimide was mainly used for bromination 1,4-DHPs. In this work, the synthesis of bis-1,4-DHP derivatives with ethyl and dodecyl ester groups attached to 1,4-DHP ring at positions 3 and 5 was performed by Hantzsch synthesis. The experimental studies were carried out to find out the best conditions and the agent for the tetra bromination of bis-1,4-DHP methyl groups at positions 2 and 6. Four different brominating agents were screened. The use of pyridinium bromide-perbromide in ethyl acetate was found to be optimal for the bromination of methyl groups. The bromination reaction was followed by the synthesis of cationic pyridine moiety containing amphiphilic bis-1,4-DHP derivatives. By nucleophilic substitution of bromine with various substituted pyridines, 12 new amphiphilic bis-1,4-DHP derivatives were obtained. Evaluation of self-assembling properties of tetracationic bis-1,4-dihydropyridine derivatives by dynamic light scattering (DLS) measurements was also performed.
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Affiliation(s)
- Martins Kaukulis
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Martins Rucins
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
| | - Davis Lacis
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Aiva Plotniece
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Riga Stradiņš University, Konsula 21, LV-1007 Riga, Latvia
| | - Arkadij Sobolev
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
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3
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Hamed A, Orabi A, Salem H, Ismaiel D, Saad G, Abdelhamid I, Elwahy A, Elsabee M. An effective uranium removal using diversified synthesized cross-linked chitosan bis-aldehyde Schiff base derivatives from aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:106790-106811. [PMID: 36334198 PMCID: PMC10611627 DOI: 10.1007/s11356-022-23856-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Three new cross-linked chitosan derivatives were yielded through intensification of chitosan with diverse types of bis-aldehydes. The prepared cross-linked chitosan was characterized by FTIR, 1H NMR, XRD, and TGA techniques. TGA indicated an improvement in thermal stability of the cross-linked chitosan compared with pure chitosan. Batch adsorption experiments showed that the three novel cross-linked chitosan bis-aldehyde derivatives possessed good adsorption capacity against U(VI) in the order of BFPA > BFB > BODB (adsorption capacity of the three adsorbents for U(VI) reaches 142, 124, and 114 mg/g respectively) and the adsorption isotherm and kinetic were well described by the Langmuir and the pseudo-second-order kinetic model, respectively. In addition, the prepared cross-linked chitosan bis-aldehyde derivatives were examined as U(VI) catcher from waste solutions.
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Affiliation(s)
- Amira Hamed
- Chemistry Department, Faculty of Science, Cairo University, Cairo, 12613, Egypt
| | - Ahmed Orabi
- Nuclear Materials Authority, El-Maadi, P.O. Box 530, Cairo, Egypt.
| | - Hend Salem
- Nuclear Materials Authority, El-Maadi, P.O. Box 530, Cairo, Egypt
| | - Doaa Ismaiel
- Nuclear Materials Authority, El-Maadi, P.O. Box 530, Cairo, Egypt
| | - Gamal Saad
- Chemistry Department, Faculty of Science, Cairo University, Cairo, 12613, Egypt
| | - Ismail Abdelhamid
- Chemistry Department, Faculty of Science, Cairo University, Cairo, 12613, Egypt
| | - Ahmed Elwahy
- Chemistry Department, Faculty of Science, Cairo University, Cairo, 12613, Egypt
| | - Maher Elsabee
- Chemistry Department, Faculty of Science, Cairo University, Cairo, 12613, Egypt
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4
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Elwahy AHM, Ginidi ARS, Shaaban MR, Farag AM, Salem ME. Synthesis of novel bis-thiazoles, bis-thienopyridines, and bis-triazolothiadiazines linked to diphenyl ether core as novel hybrid molecules. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2179405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed R. S. Ginidi
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohamed R. Shaaban
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed M. Farag
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Mostafa E. Salem
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
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5
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Salem ME, Qenawy MS, Farag AM, Elwahy AHM. Synthesis of novel scaffolds based on bis-thiazole or bis-triazolothiadiazine linked to quinoxaline as new hybrid molecules. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2153338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mostafa E. Salem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohmmad S. Qenawy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed M. Farag
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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6
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Chitosan Schiff bases-based polyelectrolyte complexes with graphene quantum dots and their prospective biomedical applications. Int J Biol Macromol 2022; 208:1029-1045. [PMID: 35378157 DOI: 10.1016/j.ijbiomac.2022.03.199] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/26/2022] [Accepted: 03/29/2022] [Indexed: 02/08/2023]
Abstract
Chitosan (Cs) bis-aldehyde Schiff base derivatives were synthesized by condensation of Cs with three bis-aldehydes namely; butane-1,4-diyl bis(4-formylbenzoate), N,N'-(butane-1,4-diyl)bis(2-(4-formylphenoxy)acetamide) and 4,4'-(butane-1,4-diylbis(oxy))dibenzaldehyde. The prepared Cs derivatives were blended with carboxymethyl chitosan(CMC) and graphene quantum dots (GQDs) to produce semi-IPNs polyelectrolyte complexes (PECs). and characterized with respect to their molecular structure and physio-chemical properties. The antibacterial activity against H. pylori (and in vitro Inosine 5'-monophosphate dehydrogenase IMPDH inhibitory assay) was evaluated. Additionally, a preliminary in vitro assessment for wound healing was performed against PECs in which wound closure percentages, and rates were investigated indicating an accelerated wound healing compared with untreated cells. The PEC based on Schiff base PEC containing amide linkage showed the highest wound healing ability. A minimal inhibitory concentration (MIC) was obtained for the PEC sample containing Cs Schiff base derived from 4,4'-(butane-1, 4-diylbis(oxy))dibenzaldehyde at a dose of 0.98 μg/ml inhibiting H. pylori growth by 100%. Additionally, the selected above-mentioned compound was selected to test its inhibitory activity against the HpIMPDH enzyme in addition to its selectivity towards the hIMPDH2 enzyme and was found to have promising activity against the HpIMPDH enzyme with IC50 value of 0.65 μM, and to be safer and less active against the hIMPDH2 enzyme with IC50 > 10 μM, reflecting its selectivity.
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7
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Abdelhamid IA, Shaaban MR, Elwahy AH. Bis-aldehydes: Versatile precursors for bis-heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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8
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Filatova ES, Fedorova OV, Rusinov GL, Charushin VN. Synthesis and properties of heterocycle-containing podands. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-03009-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Abdelmoniem AM, Hammad HF, Darweesh AF, Abdelaziz MA, Abdelhamid IA, Elwahy AHM. Hantzsch one-pot multicomponent synthesis of a novel series of bis(9,10-diarylhexahydroacridine-1,8-diones). SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1956541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Hadeel F. Hammad
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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10
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Hawass MAE, Sanad SMH, Elwahy AHM, Abdelhamid IA. Hantzsch synthesis of bis(pyrido[2,3-d:6,5-d']dipyrimidines), bis(pyrimido[4,5-b]quinolines), and bis(benzo[4,5]imidazo[2,1-b]quinazolines) linked to pyrazole units as novel hybrid molecules. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1913604] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Darweesh AF, Salama SK, Abdelhamid IA, Elwahy AHM. Bis(aldehydes): Versatile precursors for novel
bis
(
14
H
‐dibenzo[
a
,
j
]xanthenes),
bis
(pyrano[3,2‐
c
:5,6‐
c
']dichromenedione), and
bis
(dihydrobenzo[
a
]xanthenones)
via
multicomponent reactions. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ahmed F. Darweesh
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
| | - Soad K. Salama
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
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12
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Darweesh AF, Salama SK, Abdelhamid IA, Elwahy AHM. Green synthesis of novel bis(hexahydro-1H-xanthene-1,8(2H)-diones) employing p-toluenesulfonic acid (p-TSA) as a solid acid catalyst. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1837170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Soad K. Salama
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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13
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Darweesh AF, Abd El-Fatah NA, Abdelhamid IA, Elwahy AHM, Salem ME. Investigation of the reactivity of (1 H-benzo[ d]imidazol-2-yl)acetonitrile and (benzo[ d]thiazol-2-yl)acetonitrile as precursors for novel bis(benzo[4,5]imidazo[1,2- a]pyridines) and bis(benzo[4,5]thiazolo[3,2- a]pyridines). SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1784436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ahmed F. Darweesh
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | | | | | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Mostafa E. Salem
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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14
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Sanad SMH, Hawass MAE, Elwahy AHM, Abdelhamid IA. Hantzsch synthesis of bis(1,4-dihydropyridines) and bis(tetrahydrodipyrazolo[3,4-b:4′,3′-e]pyridines) linked to pyrazole units as novel hybrid molecules. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1761395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Eid EM, Hassaneen HME, Elwahy AHM, Abdelhamid IA. Hantzsch-like synthesis of novel bis(hexahydroacridine-1,8-diones), bis(tetrahydrodipyrazolo[3,4- b:4′,3′- e]pyridines), and bis(pyrimido[4,5- b]quinolines) incorporating thieno[2,3- b]thiophenes. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820917886] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel series of bis(hexahydroacridine-1,8-diones), bis(tetrahydrodipyrazolo[3,4- b:4′,3′- e]pyridines), and bis(pyrimido[4,5- b]quinolines) incorporating a thieno[2,3- b]thiophene core via ether or ester linkages is prepared via a Hantzsch-like reaction.
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Affiliation(s)
- Elshimaa M Eid
- Faculty of Science, Department of Chemistry, Cairo University, Giza, Egypt
| | | | - Ahmed H M Elwahy
- Faculty of Science, Department of Chemistry, Cairo University, Giza, Egypt
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16
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Hebishy AMS, Abdelfattah MS, Elmorsy A, Elwahy AHM. ZnO nanoparticles catalyzed synthesis of bis- and poly(imidazoles) as potential anticancer agents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1726396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | | | - Abdullah Elmorsy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Ahmed H. M. Elwahy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
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17
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Abdella AM, Abdelmoniem AM, Abdelhamid IA, Elwahy AHM. Synthesis of heterocyclic compounds via Michael and Hantzsch reactions. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3883] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Amna M. Abdella
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
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18
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Salem ME, Darweesh AF, Elwahy AHM. Synthesis of novel scaffolds based on thiazole or triazolothiadiazine linked to benzofuran or benzo[d]thiazole moieties as new hybrid molecules. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1694689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mostafa E. Salem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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19
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Abdella AM, Abdelmoniem AM, Ibrahim NS, El-Hallouty SM, Abdelhamid IA, Elwahy AHM. Synthesis, Cytotoxicity and Molecular Docking Simulation of Novel bis-1,4-Dihydropyridines Linked to Aliphatic or Arene Core via Amide or Ester-Amide Linkages. Mini Rev Med Chem 2019; 20:801-816. [PMID: 31538896 DOI: 10.2174/1389557519666190919160019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 06/03/2019] [Accepted: 09/03/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Novel bis(1,4-dihydropyridine-3,5-dicarbonitrile) derivatives linked to aliphatic or aromatic cores via amide or ester-amide linkages were prepared and their structures were confirmed by several spectral tools. METHODS The synthesis of novel N,N'-(alkanediyl)bis(2-(2-(3,5-dicyano-2,6-dimethyl-1,4-dihydropyridin- 4-yl)phenoxy)acetamide) by acid-catalyzed condensation of the bis-aldehydes with four equivalents of 3-aminocrotononitrile was reported. RESULTS The structures of the synthesized compounds were confirmed by different spectral tools. The molecular docking stimulation studies indicated that the prepared compounds bind to the active site of cellular inhibitor apoptotic protein (cIAP1-BIR3). MTT assay for the novel bis(1,4-dihydropyridines) was performed on two different human cell lines (A549 and HCT116). CONCLUSION Compound 5a showed higher cytotoxic activity against A549. Compound 5d showed moderate activity against HCT116. The rest of compounds indicated lower or no activity against both cell lines.
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Affiliation(s)
- Amna M Abdella
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Amr M Abdelmoniem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Nada S Ibrahim
- Chemistry Department (biochemistry branch), Faculty of Science, Cairo University, Giza, Egypt
| | - Salwa M El-Hallouty
- Drug Bioassay-Cell Culture Laboratory, Pharmacognosy Department, National Research Center, Dokki, Giza, 12622, Egypt
| | | | - Ahmed H M Elwahy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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20
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Fares IMZ, Mekky AEM, Abdelhamid IA, Elwahy AHM. Bis(enaminones) as Versatile Precursors for Novel Bis([1,2,4]triazolo[1,5‐ a]pyrimidines) and Bis(2‐thioxo‐2,3‐dihydropyrido[2,3‐ d]pyrimidin‐4(1 H)‐ones). J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Saleh FM, Hassaneen HM, Abdelmoniem AM, Elwahy AHM, Abdelhamid IA. Synthesis of Novel Bis(pyrido[2,1‐
a
]isoquinolines) Linked to Aliphatic or Aromatic Core
via
Ether Linkage. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Fatma M. Saleh
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | - Hamdi M. Hassaneen
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | - Amr M. Abdelmoniem
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | - Ahmed H. M. Elwahy
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
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22
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Hebishy AMS, Elgemeie GH, Elwahy AHM. Novel Bis(2‐cyanoketene‐
S
,
S
‐/
S
,
N
‐acetals): Versatile Precursors for Novel Bis(aminopyrazole) Derivatives. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
| | - Galal H. Elgemeie
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
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23
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Mekky AEM, Sanad SMH. Synthesis of novel bis(chromenes) and bis(chromeno[3,4-C]pyridine) incorporating piperazine moiety. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1595658] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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24
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Sanad SMH, Abdel‐Fattah AM, Attaby FA, Elneairy MAA. Utility of Pyridine‐2(1
H
)‐thiones in the Synthesis of Novel Bis‐Thieno[2,3‐
b
]pyridines and Their Fused Azines. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3537] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sherif M. H. Sanad
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | | | - Fawzy A. Attaby
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
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25
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Mekky AEM, Sanad SMH. Microwave‐Assisted Synthesis of Novel Bis(thiazoles) Incorporating Piperazine Moiety. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3531] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | - Sherif M. H. Sanad
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
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26
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Sanad SMH, Abdel‐Fattah AM, Attaby FA, Elneairy MAA. Pyridine‐2(1
H
)‐thiones: Versatile Precursors for Novel Pyrazolo[3,4‐
b
]pyridine, Thieno[2,3‐
b
]pyridines, and Their Fused Azines. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3444] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sherif M. H. Sanad
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | | | - Fawzy A. Attaby
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
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Sanad SMH, Hawass MAE, Ahmed AAM, Elneairy MAA. Efficient Synthesis and Characterization of Novel Pyrido[3′,2′:4,5]thieno[3,2‐
d
]pyrimidines and Their Fused [1,2,4]triazole Derivatives. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3352] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Ahmed A. M. Ahmed
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
- Preparatory Year DeanshipJouf University Sakaka Saudi Arabia
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28
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Regioselective synthesis and theoretical studies of novel bis(tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-ones) catalyzed by ZnO nanoparticles. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-2040-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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