1
|
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.
Collapse
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
| |
Collapse
|
2
|
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.
Collapse
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
| | | |
Collapse
|
3
|
Abu-Zaied MA, Elgemeie GH, Halaweish FT, Hammad SF. Synthesis of novel pyridine and pyrimidine thioglycoside phosphoramidates for the treatment of COVID-19 and influenza A viruses. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 41:851-877. [PMID: 35737369 DOI: 10.1080/15257770.2022.2085293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A novel series of pyridine, cytosine, and uracil thioglycoside analogs (4a-i, 9a,b, and 13a,b, respectively) and their corresponding phosphoramidates (6a-I, 10a,b, and 14a,b, respectively) were synthesized and assessed for their antiviral inhibitory activities in a dual-pathogen screening protocol against SARS-CoV-2 and influenza A virus (IAV). MTT cytotoxicity (TC50) and plaque reduction assays were used to explore inhibition and cytotoxicity percentage values for H5N1 influenza virus strain and the half-maximal cytotoxic concentration (CC50) and inhibitory concentration (IC50) for SARS-CoV-2 virus. Most of the tested compounds demonstrated dose-dependent inhibition behavior. Both cytosine thioglycoside phosphoramidates 10a and 10b exhibited the most potent profiles with 83% and 86% inhibition at 0.25 µM concentration against H5N1 and IC50 values of 12.16 µM, 14.9 µM against SARS-CoV-2, respectively. Moreover, compounds 10a and 10b have been shown to have the highest selectivity index (SI) among all the tested compounds against SARS-CoV-2 with 28.2 and 26.9 values, respectively.
Collapse
Affiliation(s)
| | - Galal H Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Fathi T Halaweish
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota, USA
| | - Sherif F Hammad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Helwan, Egypt.,Basic and Applied Sciences Institute, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Egypt
| |
Collapse
|
4
|
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.
Collapse
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
| |
Collapse
|
5
|
Abu-Zaied MA, Elgemeie GH, Mahmoud NM. Synthesis of novel pyrimidine thioglycosides as structural analogs of favipiravir (avigan) and their antibird flu virus activity. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2021; 40:336-356. [PMID: 33478340 DOI: 10.1080/15257770.2021.1872794] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Novel class of amino pyrimidine thioglycoside derivatives were designed from sodium 2-cyano-3-(arylamino)prop-1-ene-1,1-bis(thiolate) 1a-d and guanidine hydrochloride 2 to afford the corresponding sodium 2,6-diamino-5-aryl-1,2-dihydropyrimidine-4-thiolate 3a-d, which in coupling with peracylated α-D-gluco- and galactopyranosyl bromides 5a,b in DMF gave the corresponding pyrimidine thioglycosides 6a-h. Acidification of 2,6-diamino-5-aryl-1,2-dihydropyrimidine-4-thiolate salts 3a-d with hydrochloric acid formed the corresponding pyrimidine-4-thioles 4a-d. The latter were stirred with peracetylated halo sugars α-D-gluco- and galacto-pyranosyl bromides in sodium hydride and DMF to yield the pyrimidine thioglycosides 6a-h. Deacetylation of the pyrimidine thioglycosides gave the corresponding free pyrimidine thioglycosides 7a-h. The compounds were characterized by 13C NMR, 1H NMR, and IR. The pyrimidine thioglycosides 6a-h and free pyrimidine thioglycosides 7a-h were tested against H5N1 virus strain and exhibited high to moderate activity.
Collapse
Affiliation(s)
| | - Galal H Elgemeie
- Faculty of Science, Chemistry Department, Helwan University, Helwan, Cairo, Egypt
| | - Nashwa M Mahmoud
- Faculty of Science, Chemistry Department, Suez University, Suez, Egypt
| |
Collapse
|
6
|
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.
Collapse
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
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
Abstract
The title compound, C10H11N3O, crystallizes in the triclinic space group P\overline{1} with Z′ = 2. The two independent molecules (A and B) differ in the orientation of the phenyl rings with respect to the plane of the triazine ring, with an interplanar angle of 11.45 (6)° in molecule A and 19.71 (5)° in molecule B, in the opposite sense. In the crystal, classical N—H...N hydrogen bonds cross-link the molecules to form chains parallel to the b axis. Two additional `weak' C—H...O hydrogen bonds link the chains to form layers parallel to (101).
Collapse
|