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Waly OM, El-Sayed SM, Ghaly MA, El-Subbagh HI. Multi-targeted anti-Alzheimer's agents: Synthesis, biological evaluation, and molecular modeling study of some pyrazolopyridine hybrids. Eur J Med Chem 2023; 262:115880. [PMID: 37871406 DOI: 10.1016/j.ejmech.2023.115880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/25/2023]
Abstract
A new series of compounds bearing a pyrazolopyridine scaffold was synthesized as integrated anti-Alzheimer's disease (AD) multi-targeted ligands. Compounds 49 and 51 showed remarkable activity as hAChE inhibitors with IC50 values of 0.17 and 0.16 μM, respectively; and proved to be active hBuChE inhibitors with IC50 values 0.17 and 0.69 μM, eight and two-fold more active than the reference compound rivastigmine, respectively. Compounds 49 and 51 showed potent GSK3β inhibition with IC50 values of 0.21 and 0.26 μM, respectively compared to L807mts. Also, 49 and 51 showed 66.0 and 60.0% as tau protein aggregation inhibitors; and Aβ1-42 self-aggregation inhibitors with 79.0 and 75.0% respectively. Furthermore, 49 and 51 could bind virtually with the PAS affecting Aβ aggregation, thus preventing Aβ-dependent neurotoxicity. They proved to have the ability to chelate bio-metals such as Fe2+, Cu2+, and Zn2+ preventing their oxidative damage in the brain of AD patients, in addition to their safety upon WI-38 cell line. Both compounds could virtually penetrate BBB and obeyed Lipinski's rule of five. Compounds 49 and 51 could be considered as MTDLs for AD patients and the obtained model and pattern of substitution could be used for further development of new multi-targeted anti-Alzheimer's agents.
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Affiliation(s)
- Omnia M Waly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt; Pharmacy Center of Scientific Excellence, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Selwan M El-Sayed
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt; Pharmacy Center of Scientific Excellence, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Mariam A Ghaly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt; Pharmacy Center of Scientific Excellence, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
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Al-Karmalawy AA, El-Subbagh HI, Logoyda L, Lesyk RB, El-Gamal MI. Editorial: Recent advances in the research and development of kinase-inhibitory anticancer molecules. Front Chem 2023; 11:1328424. [PMID: 38025062 PMCID: PMC10666179 DOI: 10.3389/fchem.2023.1328424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 11/03/2023] [Indexed: 12/01/2023] Open
Affiliation(s)
- Ahmed A. Al-Karmalawy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University-Egypt, New Damietta, Egypt
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Hussein I. El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Pharmacy Center of Scientific Excellence, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Liliya Logoyda
- Department of Pharmaceutical Chemistry, I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Roman B. Lesyk
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry, Danylo Halytsky Lviv National University, Lviv, Ukraine
| | - Mohammed I. El-Gamal
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
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Elsayed RW, Bayoumi SM, El-Subbagh HI, El-Sayed SM. Hydrazinecarbonyl-thiazol-2-acetamides with pronounced apoptotic behavior: synthesis, in vitro/in vivo anti-proliferative activity and molecular modeling simulations. Bioorg Med Chem Lett 2023; 87:129285. [PMID: 37054758 DOI: 10.1016/j.bmcl.2023.129285] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/01/2023] [Accepted: 04/09/2023] [Indexed: 04/15/2023]
Abstract
A new series of N-[4-(2-substituted hydrazine-1-carbonyl)thiazole-2-yl]acetamides was synthesized and evaluated in vitro against six human cell lines as antitumor agents. Compounds 20, 21 and 22 showed remarkable inhibition to HeLa (IC50 values of 1.67, 3.81, 7.92 µM) and MCF-7 (IC50 values of 4.87, 5.81, 8.36 µM, respectively) cell growth with high selectivity indices and safety profiles. Compound 20 showed significant decreases in both tumor volume and body weight gain compared to vehicle control, in the solid tumor animal model of Ehrlich ascites carcinoma (EAC) with recovered caspase-3 immuno-expression. Flow cytometry cell analysis showed that 20 exerts anti-proliferative activity in mutant Hela and MCF-7 cell lines through arresting the cell growth at the G1/S phase producing cell death via apoptosis rather than necrosis. To explain the antitumor mode of action of the most active compounds, EGFR-TK and DHFR inhibition assays were carried out. Compound 21 conveyed dual EGFR/DHFR inhibition with IC50 0.143 (EGFR) and 0.159 (DHFR) µM. Compound 20 showed DHFR inhibition with IC50 0.262 µM. Compound 22 exhibited the best EGFR inhibitory efficacy with IC50 0.131 µM. Molecular modelling study revealed that 21 and 22 have binding interactions with EGFR amino acid residues Lys745 and Asp855. Compounds 20 and 21 showed affinity toward DHFR amino acid residues Asn64, Ser59 and Phe31. The ADMET profile and Lipinski's rule of five calculated for these compounds were acceptable. Compounds 20, 21 and 22 could be regarded as promising prototype antitumor agents for further optimization.
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Affiliation(s)
- Reham W Elsayed
- Department of Medicinal Chemistry Pharmacy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Said M Bayoumi
- Department of Medicinal Chemistry Pharmacy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry Pharmacy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Selwan M El-Sayed
- Department of Medicinal Chemistry Pharmacy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
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El-Gazzar YI, Ghaiad HR, El Kerdawy AM, George RF, Georgey HH, Youssef KM, El-Subbagh HI. New quinazolinone-based derivatives as DHFR/EGFR-TK inhibitors: Synthesis, molecular modeling simulations, and anticancer activity. Arch Pharm (Weinheim) 2023; 356:e2200417. [PMID: 36257809 DOI: 10.1002/ardp.202200417] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/18/2022] [Accepted: 09/20/2022] [Indexed: 01/04/2023]
Abstract
New 2-mercapto-quinazolin-4-one analogs were synthesized and tested for their in vitro anticancer activity, dihydrofolate reductase (DHFR) inhibition, and epidermal growth factor tyrosine kinase (EGFR-TK) inhibition activities. Compound 24, which is characterized by a 2-benzyl-thio function, showed broad-spectrum anticancer activity with high safety profile and selectivity index. The concentrations of 24 causing 50% growth inhibition (GI50 ) and total cell growth inhibition (TGI) and its lethal concentration 50 (LC50 ) were 15.1, 52.5, and 91.2 µM, respectively, using 5-fluorouracil as a positive control. Also, it showed EGFR-TK inhibitory activity with IC50 = 13.40 nM compared to gefitinib (IC50 = 18.14 nM) and DHFR inhibitory potency with 0.30 μM compared to methotrexate (MTX; IC50 = 0.08 μM). In addition, compound 24 caused cell cycle arrest and apoptosis on COLO-205 colon cancer cells. Compounds 37, 21, and 54 showed remarkable DHFR inhibitory activity with IC50 values of 0.03, 0.08, and 0.08 μM, respectively. The inhibitory properties of these compounds are due to an electron-withdrawing group on the quinazolinone ring, except for compound 54. In a molecular modeling study, compound 24 showed the same binding mode as gefitinib as it interacted with the amino acid Lys745 via π-π interaction. Compound 37 showed a similar binding mode as MTX through the binding interaction with Lys68, Asn64 via hydrogen bond acceptor, and Phe31 via arene-arene interaction. The obtained model and substitution pattern could be used for further development.
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Affiliation(s)
- Yomna I El-Gazzar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Heba R Ghaiad
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Ahmed M El Kerdawy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Pharmaceutical Chemistry, School of Pharmacy, Newgiza University (NGU), Cairo, Egypt
| | - Riham F George
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Hanan H Georgey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Drug Technology, Egyptian Chinese University, Cairo, Egypt
| | - Khairia M Youssef
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Sabry MA, Ghaly MA, Maarouf AR, El-Subbagh HI. New thiazole-based derivatives as EGFR/HER2 and DHFR inhibitors: Synthesis, molecular modeling simulations and anticancer activity. Eur J Med Chem 2022; 241:114661. [PMID: 35964425 DOI: 10.1016/j.ejmech.2022.114661] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022]
Abstract
New series of thiazole and imidazo[2,1-b]thiazole derivatives were synthesized and tested for their in vitro anticancer activity. Compounds 27, 34, 39 and 42-44 showed the best anticancer activity against the tested cancer cell lines with high safety profile and selectivity indices, especially MCF-7 breast cancer, compared to sorafenib. As an attempt to reveal their mode of cytotoxicity, EGFR, HER2 kinase and DHFR inhibition assays were performed. Compounds 39 and 43 were the most potent dual EGFR/HER2 kinase inhibitors, with IC50 values of 0.153 (EGFR), 0.108 (HER2) and 0.122 (EGFR), 0.078 (HER2) μM, respectively. 39 and 42 were the best DHFR inhibitors showing IC50 0.291 and 0.123 μM, respectively. 39 and 43 induced their cytotoxicity via cell cycle arrest at G1/S and G1 phases, respectively, and apoptosis rather than necrosis in the MCF-7 breast cancer cell line. In vivo anti-breast cancer assay of 39 and 43 showed significant tumor volume reduction with recovered caspase-3 immunoexpression. Modeling study results proved the importance of the 5-(4-substituted phenyl)-imidazo[2,1-b]thiazole moiety and the hydrazide side chain for the anticancer activity. The most potent compounds showed good drug-likeness features and could be used as prototypes for further optimization. 39 could be an example of a multi-targeting anticancer agent that acts by inhibiting EGFR/HER2 kinase, DHFR enzymes and cellular apoptosis.
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Affiliation(s)
- Mohamed A Sabry
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.
| | - Mariam A Ghaly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.
| | - Azza R Maarouf
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.
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Mansour NM, El-Sherbiny DT, Ibrahim FA, El-Subbagh HI. Taguchi Approach for Optimization of a Green Quantitative 1H-NMR Practice for Characterization of Levetiracetam and Brivaracetam in Pharmaceuticals. J AOAC Int 2022; 105:1516-1527. [DOI: 10.1093/jaoacint/qsac077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 05/25/2022] [Accepted: 06/08/2022] [Indexed: 11/13/2022]
Abstract
Abstract
Background
Recently, quantitative nuclear magnetic resonance (qNMR) competes with separation techniques such as high performance liquid chromatography (HPLC) and capillary electrophoresis for quantification purposes when dealing with molecules that lack a chromophore.
Objective
The advantages of the proton nuclear magnetic resonance spectroscopy as a revolutionary quantitative analysis method were exploited aimed at simple and green assessment of two racetams, namely levetiracetam (LEV) and brivaracetam (BRV), as a new family of antiepileptic medications with a unique mechanism of action. The developed technique was effectively used to determine LEV in Keppra tablets and BRV in laboratory-prepared tablets without interfering with the ordinarily suspected excipients.
Method
A Taguchi approach was applied as a powerful and user-friendly statistical technique for optimization of the qH1NMR experimental design for both drugs. The optimum acquisition conditions were number of scans 32, pulse angle 20°, and relaxation delay of 40 s for LEV and number of scans 128, pulse angle 90°, and relaxation delay of 1 s for BRV. NMR spectra were obtained by means of phloroglucinol as an internal standard and dimethyl sulfoxide-d6 as a solvent.
Results
The diagnostic doublet of doublet quantitative signals at 4.3 and at 4.2 ppm were chosen to estimate LEV and BRV, respectively. The recovery of both drugs was quantified through the range of 0.1–12 mg/mL. The limits of detection were 0.013, 0.0013 and the limits of quantitation were 0.04, 0.0039 mg/mL for LEV and BRV correspondingly.
Conclusions
The suggested technique was fully validated according to ICH guidelines and proved to be an eco-friendly practice by means of three different assessment tools, including the green analytical procedures index, national environmental methods index, and analytical eco-scale. qH1NMR should be considered a green alternative for quantification and quality control assessment of pharmaceuticals.
Highlights
This research represents the first simple, quick, and green alternative method for determination of both racetams in their pharmaceuticals.
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Affiliation(s)
- Noura M Mansour
- University of Mansoura, Faculty of Pharmacy, Department of Medicinal Chemistry , Mansoura 35516, Egypt
- Delta University for Science and Technology, Faculty of Pharmacy, Department of Pharmaceutical Chemistry , Gamasa 35712, Egypt
| | - Dina T El-Sherbiny
- University of Mansoura, Faculty of Pharmacy, Department of Medicinal Chemistry , Mansoura 35516, Egypt
- Delta University for Science and Technology, Faculty of Pharmacy, Department of Pharmaceutical Chemistry , Gamasa 35712, Egypt
| | - Fawzia A Ibrahim
- Mansoura University, Faculty of Pharmacy, Department of Analytical Chemistry , Mansoura 35516, Egypt
| | - Hussein I El-Subbagh
- University of Mansoura, Faculty of Pharmacy, Department of Medicinal Chemistry , Mansoura 35516, Egypt
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Mansour NM, El-Sherbiny DT, Ibrahim FA, El-Subbagh HI. Analysis of Two Mixtures Containing Racetams in Their Pharmaceuticals Using Simple Spectrophotometric Methodologies. Ann Pharm Fr 2022; 80:885-896. [PMID: 35718111 DOI: 10.1016/j.pharma.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/17/2022] [Accepted: 06/13/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Green spectrophotometric methods were developed and validated for determination of some CNS active drugs as antiepileptics and brain stimulants. OBJECTIVE Piracetam (PIR), Levetiracetam (LEV) and Brivaracetam (BRV) were assayed as a ternary mixture using double divisor-ratio spectra derivative (DDRSD) (method I). One more binary co-formulated mixture of Piracetam (PIR) and Vincamine (VIN) was assayed using difference spectrophotometric procedures (method II). METHOD Method I was applied to determine PIR at 302 nm in the first derivative of the ratio spectra in the selected spectral region. The content of LEV was determined by measuring the spectra at 215 nm in the first derivative of the ratio spectra in the selected spectral region. The concentration of BRV was estimated by measuring the first derivative of the ratio spectra in the chosen spectral region and detecting the signals at 229.7 nm. The application of method (II) procedures resulted in measuring the absorbance of PIR at 220 nm which is the zero crossing point on the difference spectra of VIN in 0.1 M NaOH vs. 0.1 M HCl. Similarly, the absorbance of VIN was measured at 245.0 nm, which is the zero crossing point on the difference spectra of PIR. RESULTS The suggested methods were fully validated adopting ICH guidelines. The linearity ranged from 10-100 µg/mL for the three racetams and from 2-20 for VIN. The recovery percentages were ranged from 98.72 % to 101.8 % for method I and from 98.13 % to 101.06 % for method II. Moreover, the proposed methods were proved environmentally benign using the most recent assessment tool named AGREE. CONCLUSION Both procedures were successfully applied for the determination of each drug in bulk powder, checked using laboratory prepared mixtures, and directly applied on commercially available pharmaceutical products without interference. The obtained results revealed a good agreement with those obtained by the reported methods.
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Affiliation(s)
- Noura M Mansour
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt.
| | - Dina T El-Sherbiny
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt
| | - Fawzia A Ibrahim
- Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
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Mansour NI, El-Sayed SM, El-Gohary NS, Abdel-Aziz NI, El-Subbagh HI, Ghaly MA. New phthalimide-based derivatives as EGFR-TK inhibitors: Synthesis, biological evaluation, and molecular modeling study. Bioorg Chem 2022; 127:105966. [PMID: 35728294 DOI: 10.1016/j.bioorg.2022.105966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/30/2022] [Accepted: 06/10/2022] [Indexed: 11/02/2022]
Abstract
A novel series of phthalimide derivatives was synthesized and evaluated for in vitro antitumor activity against six human cancer cell lines; HepG-2, HCT-116, MCF-7, Hep2, PC3 and Hela.The obtained results revealed that compound 32 was the most potent antitumor, while compounds 33, 22 and 24 showed strong activity against all tested cell lines. Further biological evaluation of the most active compounds was done and their in vitro EGFR-TK inhibition was tested, and the results came in accordance with the results of antitumor testing, where 32 displayed promising inhibitory activity (IC50 = 0.065 µM) compared to the standard drug erlotinib (IC50 = 0.067 µM). In addition, compounds 48, 22, 28 and 19 showed strong inhibitory activity (IC50 = 0.089, 0.093, 0.147 and 0.152 µM respectively). Cell cycle analysis was conducted and the results revealed that 32 induced cell cycle arrest on Hela and MCF-7 at G0-G1 phase and Pre-G1 phase causing cell death mainly via apoptosis. Additionally, in vivo antitumor screening revealed that 32 reduced both body weight and tumor volume in solid tumor utilizing Ehrlich ascites carcinoma (EAC) animal model. Molecular modeling study showed that 32 and 48 have the highest affinity for binding with the active site of EGFR-TK with docking score comparable to erlotinib. Compounds 32 and 48 could be used as template models for further optimization.
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Affiliation(s)
- Nayera I Mansour
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Selwan M El-Sayed
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Nadia S El-Gohary
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Naglaa I Abdel-Aziz
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 11152, Gamasa, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Mariam A Ghaly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
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Elsayed RW, Sabry MA, El-Subbagh HI, Bayoumi SM, El-Sayed SM. Thiazole-based SARS-CoV-2 protease (COV M pro ) inhibitors: Design, synthesis, enzyme inhibition, and molecular modeling simulations. Arch Pharm (Weinheim) 2022; 355:e2200121. [PMID: 35607750 PMCID: PMC9348455 DOI: 10.1002/ardp.202200121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/16/2022] [Accepted: 04/21/2022] [Indexed: 01/08/2023]
Abstract
As an attempt to contribute to the efforts of combating the pandemic virus severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) responsible for COVID‐19, new analogs of the repurposed drug nitazoxanide which showed promising inhibitory efficacy on a viral protease enzyme were designed, synthesized and evaluated for their inhibitory activity on the main protease of the SARS‐CoV‐2 virus, using the COV2‐3CL protease inhibition assay. The obtained results showed that the N‐(substituted‐thiazol‐2‐yl)cinnamamide analogs 19, 20, and 21 were the most active compounds with IC50 values of 22.61, 14.7, 21.99 µM, respectively, against the viral protease compared to the reference drugs, nitazoxanide, and lopinavir. Molecular modeling studies showed binding interactions of 19, 20, and 21 with hydrogen bonds to Gln189 and Glu166, arene–arene interaction between the thiazole moiety and His41, and other hydrophobic interactions between the ethene spacer moiety and Asn142. Moreover, an extra arene–arene interaction between substituted benzo[d]thiazole and His41 was observed regarding compounds 19 and 21. Surface mapping and flexible alignment proved the structural similarity between the new drug candidates and nitazoxanide. Compliance of the new compounds to Lipinski's rule of five was investigated and absorption, distribution, metabolism, excretion, and toxicology data were predicted. The newly synthesized compounds are promising template ligands for further development and optimization.
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Affiliation(s)
- Reham W Elsayed
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mohamed A Sabry
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Said M Bayoumi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Selwan M El-Sayed
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Waly OM, Saad KM, El-Subbagh HI, Bayomi SM, Ghaly MA. Synthesis, biological evaluation, and molecular modeling simulations of new heterocyclic hybrids as multi-targeted anti-Alzheimer's agents. Eur J Med Chem 2022; 231:114152. [DOI: 10.1016/j.ejmech.2022.114152] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 01/07/2023]
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Abou-Taleb NH, El-Sherbiny DT, El-Enany NM, El-Subbagh HI. A new grey relational analysis application in analytical chemistry: Natural deep eutectic solvent as a green extractant for HPLC determination of lamotrigine in plasma. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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El-Subbagh HI. Novel GABA A Agonist Entities: Pharmacological Investigation and Molecular Modeling Study of Thiazolo- and Thiadiazolo-[3,2-a][1,3]diazepine Analogs. Mini Rev Med Chem 2021; 21:1048-1057. [PMID: 33390131 DOI: 10.2174/1389557521999201230195733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 10/07/2020] [Accepted: 10/16/2020] [Indexed: 11/22/2022]
Abstract
Thiazolo- and thiadiazolo-[3,2-a][1,3]diazepines and their patented derivatives, tested with diverse CNS pharmacological activities, constitute an important class of compounds for new drug development. Therefore, research efforts were continued to design, synthesize, and evaluate compounds for their ultra-short, short-acting hypnotic, anticonvulsant, and neuromuscular blocking activities. The present review provides a summary of the work accomplished by these heterocycles and their biological evaluation.
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Affiliation(s)
- Hussein I El-Subbagh
- Department of Medicinal Chemistry, College of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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Ewida MA, Ewida HA, Ahmed MS, Allam HA, ElBagary RI, George RF, Georgey HH, El-Subbagh HI. Nanomolar potency of imidazo[2,1-b]thiazole analogs as indoleamine 2,3-dioxygenase inhibitors. Arch Pharm (Weinheim) 2021; 354:e2100202. [PMID: 34313342 DOI: 10.1002/ardp.202100202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/25/2021] [Accepted: 07/01/2021] [Indexed: 12/21/2022]
Abstract
Novel series of imidazo[2,1-b]thiazole analogs were designed, synthesized, and biologically evaluated as indoleamine 2,3-dioxygenase (IDO1) inhibitors. Imidazo[2,1-b]thiazoles 6, 7, and 8 showed inhibitory profiles against IDO1 at IC50 values of 68.48, 82.39, and 48.48 nM, respectively, compared with IDO5L at IC50 67.40 nM. Benzo[d]imidazo[2,1-b]thiazoles 17, 20, and 22 showed promising IDO1 inhibition at IC50 values of 53.58, 53.16, and 57.95 nM, respectively. Compound 7 showed a growth-inhibitory profile at GI of 39.33% against the MCF7 breast cancer cell line, while 8 proved lethal to ACHN renal cancer cells. Cells treated with compounds 17 and 22 showed a typical apoptosis pattern of DNA fragments that reflected the G0/G1, S, and G2/M phases of the cell cycle, together with a pre-G1 phase corresponding to apoptotic cells, which indicates that cell growth arrest occurred at the S phase. Molecular modeling simulations validated the potential of benzo[d]imidazo[2,1-b]thiazole analogs to chelate iron(III) within the IDO1 binding pocket and, hence, to have a better binding affinity via hydrophobic-hydrophobic interactions.
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Affiliation(s)
- Menna A Ewida
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt
| | - Heba A Ewida
- Department of Pharmacology and Biochemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt
| | - Mahmoud S Ahmed
- Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | - Ramzia I ElBagary
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt
| | - Riham F George
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Hanan H Georgey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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14
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El-Subbagh HI, Sabry MA. 2-Substituted-mercapto-quinazolin-4(3H)-ones as DHFR inhibitors. Mini Rev Med Chem 2021; 21:2249-2260. [PMID: 33663366 DOI: 10.2174/1389557521666210304105736] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/30/2020] [Accepted: 02/07/2021] [Indexed: 11/22/2022]
Abstract
Antifolates are a class of drugs used as antibacterial, antiparasitic, and anticancer agents. This review focuses on 2-substituted-mercapto-quinazolin-4(3H)-one analogues as dihydrofolate reductase (DHFR) inhibitors. Several research efforts have concluded a structural model for this class of 2-thio-quinazoline derivatives to get compounds with remarkable biological activity. The pattern and orientation of the -system substitutions with regard to the quinazoline nucleus manipulate the activity. The application of the obtained model criteria produced compounds 18, 20, and 21, which proved to be 4-8 times more active than the reference drug methotrexate (MTX, 1).
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Affiliation(s)
- Hussein I El-Subbagh
- Department of Medicinal Chemistry, College of Pharmacy, Mansoura University, Mansoura 35516. Egypt
| | - Mohamed A Sabry
- Department of Medicinal Chemistry, College of Pharmacy, Mansoura University, Mansoura 35516. Egypt
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15
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Abou-Taleb NH, El-Sherbiny DT, El-Enany NM, El-Subbagh HI. Multiobjective optimization of microemulsion- thin layer chromatography with image processing as analytical platform for determination of drugs in plasma using desirability functions. J Chromatogr A 2020; 1619:460945. [DOI: 10.1016/j.chroma.2020.460945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/28/2020] [Accepted: 02/02/2020] [Indexed: 11/29/2022]
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16
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Sabry MA, Ewida HA, Hassan GS, Ghaly MA, El-Subbagh HI. Synthesis, antitumor testing and molecular modeling study of some new 6-substituted amido, azo or thioureido-quinazolin-4(3H)-ones. Bioorg Chem 2019; 88:102923. [PMID: 30991189 DOI: 10.1016/j.bioorg.2019.102923] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/01/2019] [Accepted: 04/10/2019] [Indexed: 01/27/2023]
Abstract
A new series of 6-substituted amido, azo or thioureido-quinazolin-4(3H)-one was synthesized and tested for their in-vitro antitumor activity. Compounds 21, 53 and 60 showed broad spectrum antitumor activity with average IC50 values of 6.7, 7.6 and 9.1 μM, respectively compared with methotrexate (1, IC50 19.26 μM). As an attempt to reveal the mechanism of the antitumor potency, cell cycle analysis and DHFR inhibition were performed. Compounds 59 and 61 induced their cytotoxicity in Hela (IC50 10.6 μM) and HCT-116 (IC50 15.5 μM) cell lines, respectively through Pre-G1 apoptosis, inhibiting cell growth at G2-M phase. Compounds 29, 33, 59 and 61 showed DHFR inhibitory potency at IC50 0.2, 0.2, 0.3 and 0.3 μM, respectively. The active DHFR inhibitors showed high affinity binding toward the amino acid residues Thr56, Ser59 and Ser118. The active compounds obeyed Lipinski's rule of five and could be used as template model for further optimization.
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Affiliation(s)
- Mohamed A Sabry
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.
| | - Heba A Ewida
- Department of Pharmacology and Biochemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Ghada S Hassan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt
| | - Mariam A Ghaly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.
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17
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Youssef KM, Fawzy IM, El-Subbagh HI. N -substituted-piperidines as Novel Anti-alzheimer Agents: Synthesis, antioxidant activity, and molecular docking study. Future Journal of Pharmaceutical Sciences 2018. [DOI: 10.1016/j.fjps.2017.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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18
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Ewida MA, Abou El Ella DA, Lasheen DS, Ewida HA, El-Gazzar YI, El-Subbagh HI. Imidazo[2',1':2,3]thiazolo[4,5-d]pyridazinone as a new scaffold of DHFR inhibitors: Synthesis, biological evaluation and molecular modeling study. Bioorg Chem 2018; 80:11-23. [PMID: 29864684 DOI: 10.1016/j.bioorg.2018.05.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 01/31/2023]
Abstract
New series of thiazolo[4,5-d]pyridazin and imidazo[2',1':2,3]thiazolo[4,5-d]pyridazin analogues were designed, synthesized and evaluated for their invitro DHFR inhibition and antitumor activity. Compounds 13 and 43 proved to be DHFR inhibitors with IC50 0.05 and 0.06 μM, respectively. 43 proved lethal to OVCAR-3 Ovarian cancer and MDA-MB-435 Melanoma at IC50 0.32 and 0.46 μM, respectively. The active compounds formed hydrogen bond at DHFR binding site between N1-nitrogen of the pyridazine ring with Glu30; the carbonyl group with Trp24, Arg70 or Lys64; π-cation interaction with Arg22 and π-π interaction with Phe31 residues. Ring annexation of the active 1,3-thiazole ring analogue 13 into the bicyclic thiazolo[4,5-d]pyridazine (18,19) or imidazo[2,1-b]thiazoles (23-25) decreased the DHFR inhibition activity; while the formation of the tricyclic imidazo[2',1':2,3]-thiazolo[4,5-d]pyridazine (43-54) increased potency. The obtained model could be useful for the development of new class of DHFR inhibitors.
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Affiliation(s)
- Menna A Ewida
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Dalal A Abou El Ella
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, 62511 Benisuef, Egypt
| | - Deena S Lasheen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Heba A Ewida
- Department of Pharmacology and Biochemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Yomna I El-Gazzar
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt.
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19
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Ewida MA, Abou El Ella DA, Lasheen DS, Ewida HA, El-Gazzar YI, El-Subbagh HI. Thiazolo[4,5-d]pyridazine analogues as a new class of dihydrofolate reductase (DHFR) inhibitors: Synthesis, biological evaluation and molecular modeling study. Bioorg Chem 2017; 74:228-237. [PMID: 28865294 DOI: 10.1016/j.bioorg.2017.08.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/12/2017] [Accepted: 08/22/2017] [Indexed: 01/08/2023]
Abstract
A new series of 1,3-thiazoles and thiazolo[4,5-d]pyridazine both bearing the 2-thioureido function were designed, synthesized and evaluated for their invitro DHFR inhibition and antitumor activities. Compound 26 proved to be the most active DHFR inhibitor (IC50 of 0.06μM). Compound 4, 20 and 21 showed in vitro antitumor activity against a collection of cancer cell lines. Compound 26 proved lethal to HS 578T breast cancer cell line with IC50 value of 0.8μM, inducing cell cycle arrest and apoptosis. Molecular modeling studies concluded that recognition with key amino acids Phe 31 and Arg 22 is essential for DHFR binding. The obtained model could be useful for the development of new class of DHFR inhibitors.
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Affiliation(s)
- Menna A Ewida
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Dalal A Abou El Ella
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Deena S Lasheen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Heba A Ewida
- Department of Pharmacology and Biochemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Yomna I El-Gazzar
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University in Egypt, 12311 Cairo, Egypt
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt.
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20
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El-Gazzar YI, Georgey HH, El-Messery SM, Ewida HA, Hassan GS, Raafat MM, Ewida MA, El-Subbagh HI. Synthesis, biological evaluation and molecular modeling study of new (1,2,4-triazole or 1,3,4-thiadiazole)-methylthio-derivatives of quinazolin-4(3 H )-one as DHFR inhibitors. Bioorg Chem 2017; 72:282-292. [DOI: 10.1016/j.bioorg.2017.04.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 10/19/2022]
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21
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Ghabbour HA, Kadi AA, El-Subbagh HI. Crystal structure of 2-(4-(4-bromophenyl)thiazol-2-yl)isoindoline-1,3-dione, C 17H 9BrN 2O 2S. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2015-0291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C17H9BrN2O2S, monoclinic, P21/c (no. 14), a = 11.2908(2) Å, b = 8.3281(2) Å, c = 16.1037(3) Å, β = 94.453(1)°, V = 1509.67(5) Å3, Z = 4, R
gt
(F) = 0.0348, wR
ref
(F
2
) = 0.1204, T = 296 K.
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Affiliation(s)
| | - Adnan A. Kadi
- Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , P. O. Box 2457, Riaydh 11451, Saudi Arabia
| | - Hussein I. El-Subbagh
- Department of Medicinal Chemistry , Faculty of Pharmacy, Mansoura University , Mansoura 35516, Egypt
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22
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El-Messery SM, Hassan GS, Nagi MN, Habib ESE, Al-Rashood ST, El-Subbagh HI. Synthesis, biological evaluation and molecular modeling study of some new methoxylated 2-benzylthio-quinazoline-4(3H)-ones as nonclassical antifolates. Bioorg Med Chem Lett 2016; 26:4815-4823. [PMID: 27554444 DOI: 10.1016/j.bmcl.2016.08.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/01/2016] [Accepted: 08/09/2016] [Indexed: 11/26/2022]
Abstract
A new series of 2,3,6-substituted-quinazolin-4-ones was designed, synthesized, and evaluated for their in vitro DHFR inhibition, antimicrobial, and antitumor activities. Compounds 28 and 61 proved to be active DHFR inhibitors with IC50 0.02 and 0.01μM, respectively. Molecular modeling studies concluded that recognition with the key amino acid Phe34 is essential for binding and hence DHFR inhibition. Compounds 34, 56 and 66 showed broad spectrum antimicrobial activity comparable to Gentamicin and Ciprofloxacin. Compounds 40 and 64 showed broad spectrum antitumor activity toward several tumor cell lines and proved to be 10 fold more active than 5-FU, with GI50 MG-MID values of 2.2 and 2.4μM, respectively.
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Affiliation(s)
- Shahenda M El-Messery
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt.
| | - Ghada S Hassan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Mahmoud N Nagi
- Department of Pharmacology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - El-Sayed E Habib
- Department of Pharmaceutics and Pharmaceutical Technology (Microbiology), College of Pharmacy, Taibah University, Almadinah Almunawwarah 344, Saudi Arabia; Department of Microbiology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Sarah T Al-Rashood
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Hussein I El-Subbagh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences & Pharmaceutical Industries, Future University, 12311 Cairo, Egypt.
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23
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Al-Rashood ST, Hassan GS, El-Messery SM, El-Taher KE, Hefnawy MM, Al-Omar MA, El-Subbagh HI. Synthesis, biological evaluation and molecular modeling study of some new thiazolodiazepine analogs as CNS active agents. Bioorg Med Chem Lett 2016; 26:445-453. [DOI: 10.1016/j.bmcl.2015.11.097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 11/23/2015] [Accepted: 11/26/2015] [Indexed: 11/17/2022]
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24
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El-Subbagh HI, Abdel-Aziz AAM, Al-Omar MA, Al-Omary FA. Interaction of some new 2-(substituted-thio)-quinazolin-4-ones with molybdenum hydroxylases: A pharmacophore prediction. Future Journal of Pharmaceutical Sciences 2015. [DOI: 10.1016/j.fjps.2015.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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25
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Abouzeid LA, El-Subbagh HI. DNA binding of ethyl 2-substituted aminothiazole-4-carboxylate analogues: A molecular modeling approach to predict their antitumor activity. Future Journal of Pharmaceutical Sciences 2015. [DOI: 10.1016/j.fjps.2015.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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26
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Al-Salem HS, Hegazy GH, El-Taher KE, El-Messery SM, Al-Obaid AM, El-Subbagh HI. Synthesis, anticonvulsant activity and molecular modeling study of some new hydrazinecarbothioamide, benzenesulfonohydrazide, and phenacylacetohydrazide analogues of 4(3H)-quinazolinone. Bioorg Med Chem Lett 2015; 25:1490-9. [DOI: 10.1016/j.bmcl.2015.02.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 02/06/2015] [Accepted: 02/11/2015] [Indexed: 11/29/2022]
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27
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Al-Rashood ST, Hassan GS, El-Messery SM, Nagi MN, Habib ESE, Al-Omary FA, El-Subbagh HI. Synthesis, biological evaluation and molecular modeling study of 2-(1,3,4-thiadiazolyl-thio and 4-methyl-thiazolyl-thio)-quinazolin-4-ones as a new class of DHFR inhibitors. Bioorg Med Chem Lett 2014; 24:4557-4567. [DOI: 10.1016/j.bmcl.2014.07.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 07/28/2014] [Indexed: 11/16/2022]
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28
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Hassan GS, El-Messery SM, Al-Omary FAM, Al-Rashood ST, Shabayek MI, Abulfadl YS, Habib ESE, El-Hallouty SM, Fayad W, Mohamed KM, El-Menshawi BS, El-Subbagh HI. Nonclassical antifolates, part 4. 5-(2-aminothiazol-4-yl)-4-phenyl-4H-1,2,4-triazole-3-thiols as a new class of DHFR inhibitors: synthesis, biological evaluation and molecular modeling study. Eur J Med Chem 2013; 66:135-45. [PMID: 23792351 DOI: 10.1016/j.ejmech.2013.05.039] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/19/2013] [Accepted: 05/25/2013] [Indexed: 11/18/2022]
Abstract
A new series of compounds possessing 5-(2-aminothiazol-4-yl)-4-phenyl-4H-1,2,4-triazole-3-thiol skeleton was designed, synthesized, and evaluated for their in vitro DHFR inhibition, antimicrobial, antitumor and schistosomicidal activities. Four active compounds were allocated, the antibacterial 22 (comparable to gentamicin and ciprofloxacin), the schistosomicidal 29 (comparable to praziquantel), the DHFR inhibitor 34 (IC₅₀ 0.03 μM, 2.7 fold more active than MTX), and the antitumor 36 (comparable to doxorubicin). Molecular modeling studies concluded that recognition with key amino acid Leu4 and Val1 is essential for DHFR binding. Flexible alignment and surface mapping revealed that the obtained model could be useful for the development of new class of DHFR inhibitors.
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Affiliation(s)
- Ghada S Hassan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
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29
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Al-Omary FA, Hassan GS, El-Messery SM, Nagi MN, Habib ESE, El-Subbagh HI. Nonclassical antifolates, part 3: Synthesis, biological evaluation and molecular modeling study of some new 2-heteroarylthio-quinazolin-4-ones. Eur J Med Chem 2013; 63:33-45. [DOI: 10.1016/j.ejmech.2012.12.061] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 12/24/2012] [Accepted: 12/26/2012] [Indexed: 11/27/2022]
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30
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El-Azab AS, Abdel-Hamide SG, Sayed-Ahmed MM, Hassan GS, El-Hadiyah TM, Al-Shabanah OA, Al-Deeb OA, El-Subbagh HI. Novel 4(3H)-quinazolinone analogs: synthesis and anticonvulsant activity. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0280-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Hassan GS, El-Messery SM, Al-Omary FAM, El-Subbagh HI. Substituted thiazoles VII. Synthesis and antitumor activity of certain 2-(substituted amino)-4-phenyl-1,3-thiazole analogs. Bioorg Med Chem Lett 2012; 22:6318-23. [PMID: 22995621 DOI: 10.1016/j.bmcl.2012.08.095] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 08/20/2012] [Accepted: 08/24/2012] [Indexed: 11/16/2022]
Abstract
A novel series of 2-acetamido- or 2-propanamido-4-(4-substituted phenyl)-1,3-thiazoles (11-34) was designed and synthesized. Compounds were subjected to National Cancer Institute (NCI) in vitro assessment for their antitumor activity, at a single dose of 10 μM. Most of the investigated compounds exhibited broad-spectrum antitumor activity. Compounds 19 and 28 believed to be the most active members in this study, with MG-MID GI(50), TGI, and LC(50) values of 2.8, 11.4, 44.7; and 3.3, 13.1, 46.8, respectively. Compounds 19 and 28 proved to be nine and sevenfold more active than the standard antitumor drug 5-FU, respectively.
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Affiliation(s)
- Ghada S Hassan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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32
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El-Messery SM, Hassan GS, Al-Omary FA, El-Subbagh HI. Substituted thiazoles VI. Synthesis and antitumor activity of new 2-acetamido- and 2 or 3-propanamido-thiazole analogs. Eur J Med Chem 2012; 54:615-25. [DOI: 10.1016/j.ejmech.2012.06.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 05/28/2012] [Accepted: 06/07/2012] [Indexed: 11/28/2022]
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33
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Ghabbour HA, Kadi AA, El-Subbagh HI, Chia TS, Fun HK. N-[4-(4-Bromophenyl)thiazol-2-yl]-4-(piperidin-1-yl)butanamide. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1665. [PMID: 22719460 PMCID: PMC3379262 DOI: 10.1107/s1600536812019204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Accepted: 04/29/2012] [Indexed: 11/25/2022]
Abstract
In the title compound, C18H22BrN3OS, the piperidine ring adopts a chair conformation. The mean plane of the thiazole ring forms dihedral angles of 23.97 (10) and 75.82 (10)° with the mean planes of its adjacent benzene and piperidine rings, respectively. An intramolecular N—H⋯N hydrogen bond generates an S(7) ring motif in the molecule. In the crystal, no significant intermoelcular hydrogen bonds are observed, but a weak π–π interaction with a centroid–centroid distance of 3.8855 (13) Å occurs.
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34
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Ghabbour HA, Kadi AA, El-Subbagh HI, Chia TS, Fun HK. 1-(5-Bromo-4-phenyl-1,3-thia-zol-2-yl)pyrrolidin-2-one. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1738-9. [PMID: 22719524 PMCID: PMC3379326 DOI: 10.1107/s160053681201954x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Accepted: 05/01/2012] [Indexed: 11/26/2022]
Abstract
The asymmetric unit of the title compound, C13H11BrN2OS, consists of two crystallographically independent molecules (A and B). In each molecule, the pyrrolidine ring adopts an envelope conformation with a methylene C atom as the flap atom. In molecule A, the central thiazole ring makes a dihedral angle of 36.69 (11)° with the adjacent phenyl ring, whereas the corresponding angle is 36.85 (12)° in molecule B. The pyrrolidine ring is slightly twisted from the thiazole ring, with C—N—C—N torsion angles of 4.8 (3) and 3.0 (4)° in molecules A and B, respectively. In the crystal, C—H⋯π and π–π [centroid-to-centroid distance = 3.7539 (14) Å] interactions are observed. The crystal studied was a pseudo-merohedral twin with twin law (-100 0-10 101) and a refined component ratio of 0.7188 (5):0.2812 (5).
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El-Azab AS, Abdel-Aziz AAM, El-Subbagh HI, Chantrapromma S, Fun HK. S-Phenyl 4-meth-oxy-benzothio-ate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1074-5. [PMID: 22589939 PMCID: PMC3344030 DOI: 10.1107/s1600536812005454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 02/07/2012] [Indexed: 11/10/2022]
Abstract
In the mol-ecule of the title thio-ester, C(14)H(12)O(2)S, the dihedral angle between the phenyl and benzene rings is 71.8 (3)°. The meth-oxy group is essentially coplanar with the benezene ring to which it is bonded, with an r.m.s. deviation of 0.0065 (5) Å for the non-H atoms involved. In the crystal, weak C-H⋯π inter-actions are present.
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Affiliation(s)
- Adel S. El-Azab
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia,Department of Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Cairo 11884, Egypt
| | - Alaa A.-M. Abdel-Aziz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia,Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
| | - Hussein I. El-Subbagh
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University, Cairo 12311, Egypt
| | - Suchada Chantrapromma
- Crystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
| | - Hoong-Kun Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia,Correspondence e-mail:
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Abdel-Aziz AAM, El-Azab AS, El-Subbagh HI, Al-Obaid AM, Alanazi AM, Al-Omar MA. Design, synthesis, single-crystal and preliminary antitumor activity of novel arenesulfonylimidazolidin-2-ones. Bioorg Med Chem Lett 2012; 22:2008-14. [PMID: 22318157 DOI: 10.1016/j.bmcl.2012.01.036] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 12/24/2011] [Accepted: 01/11/2012] [Indexed: 11/30/2022]
Abstract
Novel series of 1-(arenesulfonyl)imidazolidin-2-one (3a-i) and 1,3-bis(arenesulfonyl)imidazolidin-2-one (5a-i) have been synthesized and tested for their antitumor activity against 60 tumor cell lines taken from nine different organs. A significant inhibition for cancer cells was observed with series 5a-i compounds compared with the series 3a-i which showed a weak inhibition. Compounds 5a-i showed good inhibitory effect at the lung cancer HOP-92 and renal cancer CAKI-1 and UO-31 cell lines. Compound 5e showed remarkable broad-spectrum antitumor activity.
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Affiliation(s)
- Alaa A-M Abdel-Aziz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
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37
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Al-Omary FA, Hassan GS, El-Messery SM, El-Subbagh HI. Substituted thiazoles V. Synthesis and antitumor activity of novel thiazolo[2,3-b]quinazoline and pyrido[4,3-d]thiazolo[3,2-a]pyrimidine analogues. Eur J Med Chem 2012; 47:65-72. [DOI: 10.1016/j.ejmech.2011.10.023] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/09/2011] [Accepted: 10/11/2011] [Indexed: 11/25/2022]
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38
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Taher AT, Georgey HH, El-Subbagh HI. Novel 1,3,4-heterodiazole analogues: synthesis and in-vitro antitumor activity. Eur J Med Chem 2011; 47:445-51. [PMID: 22119151 DOI: 10.1016/j.ejmech.2011.11.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 11/03/2011] [Accepted: 11/05/2011] [Indexed: 10/15/2022]
Abstract
The synthesis of some new heterodiazole and their annulated imidazo[2,1-b]1,3,4-oxa/thiadiazolone 6a-d, 7a-d; 1,3,4-oxa or thiadiazole[3,2-a]pyrimidine diamine 8a-d and 1,3,4-oxa or thiadiazole-3-piperidino-1-propamide 11a,b derivatives have been described. The obtained compounds were evaluated for their in-vitro antitumor activity. A single dose (10 μM) of the test compounds were used in the full National Cancer Institute (NCI) 60 cell lines panel assay. Compounds 6c and 6d displayed appreciable anticancer activity against leukemia, non-small cell lung, CNS and showed moderate activity against colon, melanoma, and breast cancer cells lines. Compound 6c possessed remarkable broad-spectrum antitumor activity which almost 4 fold more active than the known drug 5-FU with GI(50), TGI, and LC(50) values of 6.0, 17.4, and 55.1 μM, respectively.
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Affiliation(s)
- Azza T Taher
- Departments of Organic Chemistry, Faculty of Pharmacy, Cairo University, P.O.Box 11562 Cairo, Egypt
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El-Subbagh HI, Hassan GS, El-Azab AS, Abdel-Aziz AAM, Kadi AA, Al-Obaid AM, Al-Shabanah OA, Sayed-Ahmed MM. Synthesis and anticonvulsant activity of some new thiazolo[3,2-a][1,3]diazepine, benzo[d]thiazolo[5,2-a][12,6]diazepine and benzo[d]oxazolo[5,2-a][12,6]diazepine analogues. Eur J Med Chem 2011; 46:5567-72. [DOI: 10.1016/j.ejmech.2011.09.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 09/13/2011] [Accepted: 09/15/2011] [Indexed: 10/17/2022]
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40
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Robaa D, Enzensperger C, ElDin AbulAzm S, Hefnawy MM, El-Subbagh HI, Wani TA, Lehmann J. Chiral Indolo[3,2-f][3]benzazecine-Type Dopamine Receptor Antagonists: Synthesis and Activity of Racemic and Enantiopure Derivatives. J Med Chem 2011; 54:7422-6. [DOI: 10.1021/jm200676f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dina Robaa
- Institut für Pharmazie, Abteilung Medizinische Chemie, Martin Luther Universität Halle-Wittenberg, Germany
| | - Christoph Enzensperger
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich Schiller Universität Jena, Jena, Germany
| | - Shams ElDin AbulAzm
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
| | - Mohamed M. Hefnawy
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Hussein I. El-Subbagh
- Department of Pharmaceutical Chemistry, College of Pharmaceutical Sciences & Pharmaceutical Industries, Future University, Cairo, Egypt
| | - Tanveer A. Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Jochen Lehmann
- Institut für Pharmazie, Lehrstuhl für Pharmazeutische/Medizinische Chemie, Friedrich Schiller Universität Jena, Jena, Germany
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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41
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Abdel-Aziz AAM, El-Azab AS, Attia SM, Al-Obaid AM, Al-Omar MA, El-Subbagh HI. Synthesis and biological evaluation of some novel cyclic-imides as hypoglycaemic, anti-hyperlipidemic agents. Eur J Med Chem 2011; 46:4324-9. [PMID: 21783284 DOI: 10.1016/j.ejmech.2011.07.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/13/2011] [Accepted: 07/02/2011] [Indexed: 11/19/2022]
Abstract
Certain new halogenated cyclic-imides related to N-substituted phthalimide moiety were synthesized. Spacers of one or two carbon atom distances were inserted to connect the N-terminus of the cyclic-imide nuclei to the used heteroaryl groups to evaluate the effect of such alteration on biological activity. The synthesized compounds were subjected to hypoglycaemic and anti-hyperlipidemic evaluation. Some of the tested compounds proved to be more potent than the reference drugs glibenclamide and clofibrate. Compound 5e remarkably reduced serum glucose level by 55%; while 5c, 5e, 7d and 8e reduced total serum cholesterol by 58, 56, 54 and 53%, respectively. Those new cyclic-imides could be considered as useful template for future development to obtain more potent hypoglycaemic and anti-hyperlipidemic agents.
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Affiliation(s)
- Alaa A-M Abdel-Aziz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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42
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Youssef KM, Al-Omar MA, El-Subbagh HI, Abou-zeid LA, Abdel-Gader AGM, Haress NG, Al-Tuwaijri AS. Synthesis, antiplatelet aggregation activity, and molecular modeling study of novel substituted-piperazine analogues. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9411-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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44
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45
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Rostom SAF, Hassan GS, El-Subbagh HI. Synthesis and Biological Evaluation of Some Polymethoxylated Fused Pyridine Ring Systems as Antitumor Agents. Arch Pharm (Weinheim) 2009; 342:584-90. [DOI: 10.1002/ardp.200900062] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Al-Obaid AM, Abdel-Hamide SG, El-Kashef HA, Abdel-Aziz AAM, El-Azab AS, Al-Khamees HA, El-Subbagh HI. Substituted quinazolines, part 3. Synthesis, in vitro antitumor activity and molecular modeling study of certain 2-thieno-4(3H)-quinazolinone analogs. Eur J Med Chem 2008; 44:2379-91. [PMID: 18950904 DOI: 10.1016/j.ejmech.2008.09.015] [Citation(s) in RCA: 151] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Revised: 07/18/2008] [Accepted: 09/01/2008] [Indexed: 10/21/2022]
Abstract
The synthesis of some new 2-thieno-4(3H)-quinazolinone derivatives and their biological evaluation as antitumor agents using the National Cancer Institute (NCI) disease oriented antitumor screen protocol are investigated. Compounds 2-(2-thienylcarbonylamino)-5-iodo-N-(4-hydroxyphenyl)-benzamide (16), 2-(2-thieno)-6-iodo-3-phenylamino-3,4-dihydro-quina-zolin-4-one (26), and 2-(2-thieno)-4-[4-sulfonamidobenzylamino]-6-iodo-quinazoline (42), with GI(50) values of 12.7, 10.3, 16.9 microM, respectively, proved to be the most active members in this study, as compared to the known drug 5-FU. Conformational analysis of the most active molecules using molecular modeling and QSAR techniques enabled the understanding of the pharmacophoric requirements for 2-thieno-quinzolinone derivatives as antitumor agents. These three quinazolinone analogs (16, 26, 42) could be considered as useful templates for future development to obtain more potent antitumor agents.
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Affiliation(s)
- Abdulrahman M Al-Obaid
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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47
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Kadi AA, El-Kashef HA, Abdel-Aziz AAM, Hassan GS, Tettey J, Grant MH, Lehmann J, El-Subbagh HI. Synthesis, Ultra-Short Acting Hypnotic Activity, and Metabolic Profile of Ethyl 8-Oxo-5,6,7,8-tetrahydro-thiazolo[3,2-a] [1,3]diazepin-3-carboxylate (HIE-124). Arch Pharm (Weinheim) 2008; 341:81-9. [DOI: 10.1002/ardp.200700132] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Al-Rashood ST, Aboldahab IA, Nagi MN, Abouzeid LA, Abdel-Aziz AAM, Abdel-Hamide SG, Youssef KM, Al-Obaid AM, El-Subbagh HI. Synthesis, dihydrofolate reductase inhibition, antitumor testing, and molecular modeling study of some new 4(3H)-quinazolinone analogs. Bioorg Med Chem 2006; 14:8608-21. [PMID: 16971132 DOI: 10.1016/j.bmc.2006.08.030] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2006] [Revised: 08/17/2006] [Accepted: 08/21/2006] [Indexed: 11/24/2022]
Abstract
In order to produce potent new leads for anticancer drugs, a new series of quinazoline analogs was designed to resemble methotrexate (MTX, 1) structure features and fitted with functional groups believed to enhance inhibition of mammalian DHFR activity. Molecular modeling studies were used to assess the fit of these compounds within the active site of human DHFR. The synthesized compounds were evaluated for their ability to inhibit mammalian DHFR in vitro and for their antitumor activity in a standard in vitro tissue culture assay panel. Compounds 28, 30, and 31 were the most active DHFR inhibitors with IC(50) values of 0.5, 0.4, and 0.4microM, respectively. The most active antitumor agents in this study were compounds 19, 31, 41, and 47 with median growth inhibitory concentrations (GI(50)) of 20.1, 23.5, 26.7, and 9.1microM, respectively. Of this series of compounds, only compound 31 combined antitumor potency with potent DHFR inhibition; the other active antitumor compounds (19, 41, and 47) all had DHFR IC(50) values above 15microM, suggesting that they might exert their antitumor potency through some other mode of action. Alternatively, the compounds could differ significantly in uptake or concentration within mammalian cells.
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Affiliation(s)
- Sarah T Al-Rashood
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
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Abdel-Aziz AAM, El-Subbagh HI, Kunieda T. Lewis acid-promoted transformation of 2-alkoxypyridines into 2-aminopyridines and their antibacterial activity. Part 2: Remarkably facile C–N bond formation. Bioorg Med Chem 2005; 13:4929-35. [PMID: 15993091 DOI: 10.1016/j.bmc.2005.05.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2005] [Revised: 05/15/2005] [Accepted: 05/18/2005] [Indexed: 11/25/2022]
Abstract
2-Alkoxy-3-cyano-4,6-diarylpyridines 1a,b which were synthesized by condensation of alpha,beta-unsaturated ketones with malononitrils were subjected to Lewis acid-catalyzed nucleophilic displacement reaction with various amines to afford the corresponding 2-aminopyridines 3-21. The potency of the results as antibacterial agents has been evaluated. The structure of the newly prepared compounds was assessed by microanalysis, IR, and NMR spectra. Molecular modeling and QSAR methods are used to study the antibacterial activity of the active compounds by means of the molecular mechanic method.
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Affiliation(s)
- Alaa A-M Abdel-Aziz
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt.
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Al-Omar MA, Youssef KM, El-Sherbeny MA, Awadalla SAA, El-Subbagh HI. Synthesis and in vitro antioxidant activity of some new fused pyridine analogs. Arch Pharm (Weinheim) 2005; 338:175-80. [PMID: 15864787 DOI: 10.1002/ardp.200400953] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A new series of pyrano[3,2-c]pyridines, pyrazolo[4,3-c]pyridines, and pyrido[4,3-d]pyrimidines were synthesized and screened for their in vitro antioxidant activity. Compounds 13, 14, 15, 23, 29, 30, and 31 exhibited the most active oxygen free-radical scavenger activity with percentage inhibitions of 99.4, 99.6, 99.8, 97.3, 99.0, 99.3, and 99.5%; respectively, which is comparable to the curcumin potency. Most of the tested compounds proved to be safe towards peripheral multinuclear neutrophils (PMNs). The detailed synthesis and antioxidant activity data are reported.
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Affiliation(s)
- Mohamed A Al-Omar
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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