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Abu-Zaied MA, Hebishy AMS, Salama HT, Elgemeie GH. Design and synthesis of novel 1,3,4-thiadiazole thioglycosides as promising antimicrobial potent structures. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2024:1-20. [PMID: 38741543 DOI: 10.1080/15257770.2024.2348749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 04/23/2024] [Indexed: 05/16/2024]
Abstract
Thiosemicarbazide was used as a key starting material for the building of a diversity of novel heterocyclic moieties. The heterocyclization reaction of thiosemicarbazide derivatives with carbon disulfide in basic conditions afforded novel heterocyclic 1,3,4-thiadiazolethiolate derivatives. 1,3,4-thiadiazole-2-thiol was successfully reacted with protected α-D-gluco- and galacto-pyranosyl bromides in dimethylformamide at room temperature to give the matching 1,3,4-thiadiazole S-glycosides in good yields. The latter compounds were reacted with ammonia-methanol at room temperature for 10 min, and the deprotected derivatives were obtained in good yields. The newly synthesized compounds were characterized by basic analyses and spectral information (IR,1H NMR, and 13C NMR, X-ray). All newly produced compounds were evaluated and screened for their antibacterial activities. Compound 6f proved to be the most active antimicrobial among the investigated heterocycles.
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Affiliation(s)
| | - Ali M S Hebishy
- Chemistry Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt
| | - Hagar T Salama
- Chemistry Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt
| | - Galal H Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt
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2
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Elgemeie GH, Fathy NM, Shaarawi SI. Naphthyl cyanoketene N, S-acetals in glycoside synthesis: a new preparative route to a new class of N-naphthylcyanoacrylamide thioglycosides and their conversions to naphthyl-pyrazole hybrids. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2024:1-11. [PMID: 38265284 DOI: 10.1080/15257770.2024.2305247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
The novel N-naphthylcyanoacrylamide thioglycosides 4 were readily prepared by the reaction of N-napthylcyanoacetamide 1 with aryl isothiocyanates in the presence of potassium hydroxide, followed by coupling of the produced salts 2 with 2,3,4,6-tetra-O-acetyl-α-d-gluco- and galacto-pyranosyl bromides 3. The N-naphthyl acrylamide thioglycoside 12 was prepared by the reaction of N-napthylcyanoacetamide 1 with glucose isothiocyante 10 in the presence of potassium hydroxide, followed by alkylation of the produced salt 11 with methyl iodide. The reaction of thioglycoside compounds 4 with hydrazines afforded the corresponding naphthyl-pyrazole hybrids.
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Affiliation(s)
- Galal H Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Nahed M Fathy
- Photochemistry Department, National Research Centre, Dokki, Giza, Egypt
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3
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Abu-Zaied MA, Hebishy AMS, Elgemeie GH, Salama HT, Jones PG. Crystal structure of 5-(β-d-gluco-pyran-osyl-thio)- N-(4-methyl-phen-yl)-1,3,4-thia-diazol-2-amine. Acta Crystallogr E Crystallogr Commun 2023; 79:652-656. [PMID: 37601574 PMCID: PMC10439424 DOI: 10.1107/s2056989023005248] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 06/12/2023] [Indexed: 08/22/2023]
Abstract
In the structure of the title compound, C15H19N3O5S2, the bond lengths at the linking sulfur atom are significantly different [1.7473 (17) and 1.811 (2) Å], and the angle at the exocyclic nitro-gen atom is wide at 128.45 (18)°. The inter-planar angle between the tolyl and thia-diazole rings is 9.2 (1)°. The complex hydrogen-bonding pattern, involving five donors and five acceptors, can be broken down into a one-dimensional ribbon parallel to the b axis, involving hydrogen bonds of the sugar residues only, and a two-dimensional layer structure parallel to the ab plane, based on the N-H⋯O and O-H⋯N hydrogen bonds.
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Affiliation(s)
| | - Ali M. S. Hebishy
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Galal H. Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Hagar T. Salama
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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4
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Azzam RA, Elgemeie GH, Gad NM, Jones PG. 4-Amino-5-(4-bromobenzoyl)-3-(benzo[ d]thiazol-2-yl)-2-[(2′,3′,4′,6′-tetra- O-acetyl-β- D-galactopyranosyl)sulfanyl]thiophene. IUCRDATA 2022; 7:x220412. [DOI: 10.1107/s2414314622004126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/19/2022] [Indexed: 11/10/2022] Open
Abstract
In the title compound, C32H29BrN2O10S3, the benzothiazole and thiophene ring systems subtend an interplanar angle of 7.43 (12)°. The NH2 group forms intramolecular hydrogen bonds to Nthiazole and Ocarbonyl. The Sgalactose—Cthiophene bond is short [1.759 (2) Å]. The molecules are connected to form ribbons parallel to the b axis by two `weak' hydrogen bonds and a short Namino...Sgalactose contact.
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Abu-Zaied M, Elgemeie GH, Mahmoud NM. Anti-Covid-19 Drug Analogues: Synthesis of Novel Pyrimidine Thioglycosides as Antiviral Agents Against SARS-COV-2 and Avian Influenza H5N1 Viruses. ACS OMEGA 2021; 6:16890-16904. [PMID: 34250348 PMCID: PMC8247785 DOI: 10.1021/acsomega.1c01501] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/08/2021] [Indexed: 05/31/2023]
Abstract
A class of pyrimidine thioglycoside analogs (6a-h) were synthesized from a reaction of 2-cyano-3,3-dimercapto-N-arylacrylamide (2a-d) and thiourea to produce the corresponding 4-amino-2-mercapto-N-arylpyrimidine-5-carboxamide derivatives (3a-d), and stirring of compounds (3a-d) with peracylated α-d-gluco- and galacto-pyranosyl bromides (4a,b) in DMF-sodium hydride gave the corresponding pyrimidine thioglycosides (5a-h). Deacetylation of the pyrimidine thioglycosides via a reaction with dry NH3/MeOH gave the corresponding free pyrimidine thioglycosides (6a-h). The compounds have been characterized by 13C NMR, 1H NMR, and IR. Pharmacological evaluation of compounds 3a-d, 5a-h, and 6a-h in vitro against SARS-COV-2 and Avian Influenza H5N1 virus strains revealed that some compounds possess interesting activity.
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Affiliation(s)
- Mamdouh
A. Abu-Zaied
- Green
Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza 12622, Egypt
| | - Galal H. Elgemeie
- Chemistry
Department, Faculty of Science, Helwan University, Helwan, Cairo 11795, Egypt
| | - Nashwa M. Mahmoud
- Chemistry
Department, Faculty of Science, Suez University, Suez 43533, Egypt
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Abu-Zaied M, Mahmoud NM, Elgemeie GH. Toward Developing Therapies against Corona Virus: Synthesis and Anti-Avian Influenza Virus Activity of Novel Cytosine Thioglycoside Analogues. ACS OMEGA 2020; 5:20042-20050. [PMID: 32832758 PMCID: PMC7439276 DOI: 10.1021/acsomega.0c01537] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 07/22/2020] [Indexed: 05/03/2023]
Abstract
A series of pyrimidine and pyrimidine thioglycoside derivatives were newly synthesized using sodium 2-cyano-3-(arylamino)prop-1-ene-1,1-bis(thiolates) and urea to give the corresponding sodium 6-amino-5-aryl-2-oxo-1,2-dihydropyrimidine-4-thiolates. Stirring of the latter with peracetylated α-d-gluco- and galacto-pyranosyl bromides in DMF afforded the corresponding pyrimidine thioglycosides. On the other hand, treatment of 6-amino-5-aryl-2-oxo-1,2-dihydropyrimidine-4-thiolate salts with hydrochloric acid produced the corresponding pyrimidine-4-thioles, which on stirring with α-d-gluco- and galacto-pyranosyl bromides in sodium hydride and DMF gave the corresponding pyrimidine thioglycosides. Deacetylation of the protected pyrimidine thioglycosides gave the corresponding free pyrimidine thioglycosides. The synthesized compounds have been characterized by 13C NMR, 1H NMR, and IR spectroscopy. The pyrimidine thioglycosides and free pyrimidine thioglycosides were tested against avian influenza H5N1 virus strain and exhibited highest to moderate activity.
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Affiliation(s)
- Mamdouh
A. Abu-Zaied
- Green
Chemistry Department, National Research
Centre, 33 El Bohouth
Street, Dokki, Giza 12622, Egypt
| | - Nashwa M. Mahmoud
- Chemistry
Department, Faculty of Science, Suez University, Suez 43511, Egypt
| | - Galal H. Elgemeie
- Chemistry Department, Faculty of
Science, Helwan University, Helwan, Cairo 11731, Egypt
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Elgemeie GH, Fathy NM, Farag AB, Yahab AMB. Design and synthesis of a new class of indeno[1,2-b]pyridine thioglycosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2020; 39:1134-1149. [PMID: 32600173 DOI: 10.1080/15257770.2020.1780436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This research reports a novel method for synthesizing a new class of indeno[1,2-b]pyridine thioglycosides. This series of indenopyridine thioglycosides was designed by the reaction of (E)-2-cyano-3-(furan/or thiophene-2-yl)prop-2-enethioamide 1a or 1b with 1-indanone 2 to give the corresponding 2-thiooxo-1H-indeno[1,2-b]pyridine-3-carbonitriles 3a,b. The latter compounds were treated with peracetylated sugar bromides 5 in KOH-acetone to give the corresponding indenopyridine thioglycosides 6a-h. Ammonolysis of the protected indenopyridine thioglycosides 6a-h gave the corresponding free indenopyridine thioglycosides 7a-h. The compounds have been characterized by 13C NMR, 1H NMR and IR spectra.
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Affiliation(s)
- Galal H Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Nahed M Fathy
- Photochemistry Department, National Research Centre, Cairo, Egypt
| | - Ayman B Farag
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Aisha M Bin Yahab
- Science Department, Girls College of Education, Jeddah, Kingdom of Saudi Arabia
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