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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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2
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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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3
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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, 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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Abu-Zaied M, Hammad SF, Halaweish FT, Elgemeie GH. Sofosbuvir Thio-analogues: Synthesis and Antiviral Evaluation of the First Novel Pyridine- and Pyrimidine-Based Thioglycoside Phosphoramidates. ACS OMEGA 2020; 5:14645-14655. [PMID: 32596602 PMCID: PMC7315579 DOI: 10.1021/acsomega.0c01364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/25/2020] [Indexed: 05/31/2023]
Abstract
The synthesis and antiviral screening of the first reported series of pyridine- and pyrimidine-based thioglycoside phosphoramidates are herein reported. They were prepared through two synthetic steps: The first step is via coupling of mercapto-derivatized heterocyclic bases with the appropriate α-bromo per-acetylated sugars. The second one is the hydrolysis of the acetate esters under basic conditions that were consequently conjugated with the phosphoramidating reagent to afford the desired thioglycoside protides. Eight compounds were evaluated for their antiviral activities against different viral cell lines, namely, adenovirus 7, HAV (hepatitis A) HM175, Coxsackievirus B4, and HSV-1 (herpes simplex virus type 1), in addition to the antiviral bioassay against ED-43/SG-Feo (VYG) replicon of HCV (hepatitis C virus) genotype 4a. Both compounds 5b and 11 showed notable antiviral activity against Coxsackie virus B4, reflected from the CC50 values of 17 and 20 μg/100 μL and IC50 values of 4.5 and 6.0 μg/100 μL, respectively. Same two compounds elicited remarkable activities toward herpes simplex virus type 1, represented by CC50 values of 17 and 16 μg/100 μL and IC50 values of 6.3 and 6.6 μg/100 μL, respectively. Combination of 11 with acyclovir elicited a notable synergistic activity in comparison with acyclovir alone, as inferred from herpes simplex polymerase enzyme inhibitory assay values of 2.64 and 4.78 μg/100 mL, respectively. Only compound 11 elicited a remarkable activity against HCV. Potential promising activities of compound 11 have been shown with respect to CC50, IC50, and enzyme assay inhibitory activities.
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Affiliation(s)
| | - Sherif F. Hammad
- Pharmaceutical
Chemistry Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo 11795, Egypt
- Basic
and Applied Sciences Institute, Egypt-Japan
University of Science and Technology (E-JUST), P.O Box 179, New Borg El-Arab City, Alexandria 21934, Egypt
| | - Fathi T. Halaweish
- Department
of Chemistry & Biochemistry, South Dakota
State University, Brookings, South Dakota 57007, United States
| | - Galal Hamza Elgemeie
- Chemistry
Department, Faculty of Science, Helwan University, Helwan, Cairo 11795, Egypt
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7
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Abu-Zaied MA, Elgemeie GH, Jones PG. Crystal structure of 4,6-dimethyl-2-[(2,3,4,6-tetra- O-acetyl-β-d-galacto-pyranos-yl)sulfan-yl]pyrimidine. Acta Crystallogr E Crystallogr Commun 2019; 75:1820-1823. [PMID: 31871737 PMCID: PMC6895939 DOI: 10.1107/s205698901901449x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 10/24/2019] [Indexed: 01/21/2023]
Abstract
In the title com-pound, C20H26N2O9S, the S atom is attached equatorially to the sugar ring. The C-S bond lengths are unequal, with S-Cs = 1.8018 (13) Å and S-Cp = 1.7662 (13) Å (s = sugar and p = pyrimid-yl). In the crystal, a system of three weak hydrogen bonds, sharing an oxygen acceptor, links the mol-ecules to form chains propagating parallel to the b-axis direction.
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Affiliation(s)
- Mamdouh A. Abu-Zaied
- Green Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, Egypt
| | - Galal H. Elgemeie
- 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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Gökce H, Sert Y, Alpaslan G, El‐Azab AS, Alanazi MM, Al‐Agamy MH, Abdel‐Aziz AA. Hirshfeld Surface, Molecular Docking Study, Spectroscopic Characterization and NLO Profile of 2‐Methoxy‐4,6‐Diphenylnicotinonitrile. ChemistrySelect 2019. [DOI: 10.1002/slct.201902391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Halil Gökce
- Vocational School of Health ServicesGiresun University 28200 Giresun Giresun Turkey
| | - Yusuf Sert
- Sorgun Vocational SchoolBozok University 66100 Yozgat Turkey
| | - Gökhan Alpaslan
- Vocational School of Health ServicesGiresun University 28200 Giresun Giresun Turkey
| | - Adel S. El‐Azab
- Department of Pharmaceutical ChemistryCollege of PharmacyKing Saud University PO Box 2457 11451 Riyadh Saudi Arabia
| | - Mohammed M. Alanazi
- Department of Pharmaceutical ChemistryCollege of PharmacyKing Saud University PO Box 2457 11451 Riyadh Saudi Arabia
| | - Mohamed H.M. Al‐Agamy
- Department of Pharmaceutics and MicrobiologyCollege of PharmacyKing Saud University PO Box 2457 11451 Riyadh Saudi Arabia
| | - Alaa A.‐M. Abdel‐Aziz
- Department of Pharmaceutical ChemistryCollege of PharmacyKing Saud University PO Box 2457 11451 Riyadh Saudi Arabia
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Abu-Zaied MA, Loutfy SA, Hassan AE, Elgemeie GH. Novel purine thioglycoside analogs: synthesis, nanoformulation and biological evaluation in in vitro human liver and breast cancer models. Drug Des Devel Ther 2019; 13:2437-2457. [PMID: 31440030 PMCID: PMC6667681 DOI: 10.2147/dddt.s201249] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 06/05/2019] [Indexed: 12/17/2022] Open
Abstract
Background: A series of novel pyrazolopyrimidine and pyrazololpyridine thioglycosides were synthesized and confirmed via their spectral analyses. Purpose: To evaluate the effect of these anti-metabolic compounds against proliferation of Huh-7 and Mcf-7 as in vitro models of human liver and breast cancers, respectively. Vero cells were used as an example of normal green monkey kidney cells. Methods: The most promising compound was subjected to a nanoformulation by its encapsulation into chitosan nanoparticles to increase its anti-cancerous activity. Nanoformulation was confirmed by TEM and FT-IR to ensure encapsulation and screened for their cytotoxicity against Huh-7 and Mcf-7 cells using MTT colorimetric assay and morphological examination. Genotoxic effect was performed by cellular DNA fragmentation assay. Simulated CompuSyn software (linear interaction effect) was conducted to predict the possible synergistic effect of nanocomposite as anticancerous activity. Apoptotic effect was further analyzed by detection of apoptotic proteins using ELISA assay. Results: The nano preparation was successfully prepared by encapsulation of compound 14 into chitosan nanoparticles, controlled to a size at 105 nm and zeta charges at 40.2 mV. Treatment of Huh-7 and Mcf-7 showed that compound 14 was the most cytotoxic compound on both cancer cell lines where IC50 was 24.59 (9.836 μg/mL) and 12.203 (4.8812 μg/mL) on Huh-7 and Mcf-7 respectively. But IC50 of the nano preparation was 37.19 and 30.68 μg/mL on Huh-7 and Mcf-7, respectively, indicating its aggressiveness on human breast cancer cells as confirmed by DNA fragmentation assay and theoretically by CompuSyn tool. Conclusion: A novel series of pyrazolopyrimidine thioglycosides and pyrazolopyridine thioglycosides were synthesized. Nanoformulation of compound 14 into chitosan nanoparticles demonstrated anticancer activity and can be used as a drug delivery system, but further studies are still required.
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Affiliation(s)
| | - Samah A Loutfy
- Virology & Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
- Nanotechnology Research Center, British University, Cairo, Egypt
| | - Ashraf E Hassan
- Virology & Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
- 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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Abu-Zaied MA, Elgemeie GH. Novel synthesis of new pyrazole thioglycosides as pyrazomycin analogues. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 38:374-389. [PMID: 30689496 DOI: 10.1080/15257770.2018.1554220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This study reports a novel method for the synthesis of a new class of pyrazole thioglycosides 7a-h as pyrazomycin analogues. These series of compounds were designed through the reaction of sodium 2-cyano-3-oxo-3-(4-substitutedphenylamino)prop-1-ene-1,1-bis(thiolate) salts 2 with phenyl hydrazine in ethanol at room temperature to give the corresponding sodium 5-amino-4-(substitutedphenylcarbamoyl)-1-phenyl-1H-pyrazole-3-thiolates 3a-d. The latter compounds were treated with tetra-acetylated glycosyl bromides 4a,b in DMF at ambient temperature to give the corresponding pyrazole thioglycosides 6a-h. Treatment of pyrazole salts 3a-d with hydrochloric acid at room temperature afforded the corresponding 3-mercaptopyrazole derivatives 5. The latter compounds were treated with tetra-acetylated glycosyl bromides 4 in sodium hydride-DMF to tolerate the S-glycosyl 6a-h compounds. Ammonolysis of the latters afforded the corresponding free thioglycosides 7a-h. The structures of the reaction products were elucidated based on spectral data and elemental analysis.
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Affiliation(s)
| | - Galal H Elgemeie
- b Chemistry Department, Faculty of Science , Helwan University , Helwan , Egypt
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