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Design, Synthesis, Antitumor Activity and Molecular Docking Study of Novel 5-Deazaalloxazine Analogs. Molecules 2020; 25:molecules25112518. [PMID: 32481639 PMCID: PMC7321323 DOI: 10.3390/molecules25112518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/12/2022] Open
Abstract
Protein tyrosine kinases (PTKs) are the most potential therapeutic targets for cancer. Herein, we present a sound rationale for synthesis of a series of novel 2-(methylthio), 2-(substituted alkylamino), 2-(heterocyclic substituted), 2-amino, 2,4-dioxo and 2-deoxo-5-deazaalloxazine derivatives by applying structure-based drug design (SBDD) using AutoDock 4.2. Their antitumor activities against human CCRF-HSB-2, KB, MCF-7 and HeLa have been investigated in vitro. Many 5-deazaalloxazine analogs revealed high selective activities against MCF-7 tumor cell lines (IC50: 0.17-2.17 µM) over HeLa tumor cell lines (IC50 > 100 µM). Protein kinase profiling revealed that compound 3h induced multi- targets kinase inhibition including -43% against (FAK), -40% against (CDKI) and -36% against (SCR). Moreover, the Annexin-V/PI apoptotic assay elucidate that compound 3h showed 33% and potentially 140% increase in early and late apoptosis to MCF-7 cells respectively, compared to the control. The structure-activity relationship (SAR) and molecular docking study using PTK as a target enzyme for the synthesized 7-deazaalloaxazine derivatives were investigated as potential antitumor agents. The AutoDock binding affinities of the 5-deazaalloxazine analogs into c-kit PTK (PDB code: 1t46) revealed reasonable correlations between their AutoDock binding free energy and IC50.
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Analysis of photoreactivity and phototoxicity of riboflavin's analogue 3MeTARF. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111820. [DOI: 10.1016/j.jphotobiol.2020.111820] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 01/24/2020] [Accepted: 02/08/2020] [Indexed: 01/26/2023]
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3
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Carmona-Martínez V, Ruiz-Alcaraz AJ, Vera M, Guirado A, Martínez-Esparza M, García-Peñarrubia P. Therapeutic potential of pteridine derivatives: A comprehensive review. Med Res Rev 2018; 39:461-516. [PMID: 30341778 DOI: 10.1002/med.21529] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 07/07/2018] [Accepted: 07/10/2018] [Indexed: 12/19/2022]
Abstract
Pteridines are aromatic compounds formed by fused pyrazine and pyrimidine rings. Many living organisms synthesize pteridines, where they act as pigments, enzymatic cofactors, or immune system activation molecules. This variety of biological functions has motivated the synthesis of a huge number of pteridine derivatives with the aim of studying their therapeutic potential. This review gathers the state-of-the-art of pteridine derivatives, describing their biological activities and molecular targets. The antitumor activity of pteridine-based compounds is one of the most studied and advanced therapeutic potentials, for which several molecular targets have been identified. Nevertheless, pteridines are also considered as very promising therapeutics for the treatment of chronic inflammation-related diseases. On the other hand, many pteridine derivatives have been tested for antimicrobial activities but, although some of them resulted to be active in preliminary assays, a deeper research is needed in this area. Moreover, pteridines may be of use in the treatment of many other diseases, such as diabetes, osteoporosis, ischemia, or neurodegeneration, among others. Thus, the diversity of the biological activities shown by these compounds highlights the promising therapeutic use of pteridine derivatives. Indeed, methotrexate, pralatrexate, and triamterene are Food and Drug Administration approved pteridines, while many others are currently under study in clinical trials.
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Affiliation(s)
- Violeta Carmona-Martínez
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - Antonio J Ruiz-Alcaraz
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - María Vera
- Departamento de Química Orgánica, Universidad de Murcia, Campus de Espinardo, Murcia, Spain
| | - Antonio Guirado
- Departamento de Química Orgánica, Universidad de Murcia, Campus de Espinardo, Murcia, Spain
| | - María Martínez-Esparza
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - Pilar García-Peñarrubia
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
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Xu J, Zhang LH, Liu XB, Ma W, Ma L, Ma Y, Yang JN, Wang DL. Catalyst-Free, One-Pot, Three-Component Synthesis of Pyrimido[4,5-b] Quinoline-4-Amines under Microwave Irradiation. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15366615479040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An efficient and facile one-pot, three-component protocol for the synthesis of pyrimido[4,5-b]quinoline-4-amines from the condensation of 2-aminoquinoline-3-carbonitrile, N,N-dimethylformamide dimethyl acetal and primary amines under microwave irradiation is reported. This efficient, straightforward procedure led to the desired products in high yields without the need for a catalyst or for a tandem addition–elimination–cyclisation reaction.
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Affiliation(s)
- Jiao Xu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, P.R. China
- Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Li Hong Zhang
- Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Xiu Bo Liu
- Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Wei Ma
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, P.R. China
- Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China
| | - Ling Ma
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, P.R. China
| | - Yan Ma
- Harbin University of Commerce, Harbin 150040, P.R. China
| | - Jian Nan Yang
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121003, P.R. China
| | - Dao Lin Wang
- College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121003, P.R. China
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Reddy SS, Reddy MVK, Peddiahgari Vasu Govardhana Reddy. β-Cyclodextrin in Water: As an Efficient Green Protocol for the Synthesis of Pyrimido[4, 5- b]quinoline-diones. ChemistrySelect 2018. [DOI: 10.1002/slct.201800208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Malki WH, Gouda AM, Ali HEA, Al-Rousan R, Samaha D, Abdalla AN, Bustamante J, Abd Elmageed ZY, Ali HI. Structural-based design, synthesis, and antitumor activity of novel alloxazine analogues with potential selective kinase inhibition. Eur J Med Chem 2018; 152:31-52. [PMID: 29684708 DOI: 10.1016/j.ejmech.2018.04.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/12/2018] [Accepted: 04/14/2018] [Indexed: 01/09/2023]
Abstract
Protein kinases are promising therapeutic targets for cancer therapy. Here, we applied multiple approaches to optimize the potency and selectivity of our reported alloxazine scaffold. Flexible moieties at position 2 of the hetero-tricyclic system were incorporated to fit into the ATP binding site and extend to the adjacent allosteric site and selectively inhibit protein kinases. This design led to potential selective inhibition of ABL1, CDK1/Cyclin A1, FAK, and SRC kinase by 30-59%. Cytotoxicity was improved by ∼50 times for the optimized lead (10b; IC50 = 40 nM) against breast cancer (MCF-7) cells. Many compounds revealed potential cytotoxicity against ovarian (A2780) and colon carcinoma (HCT116) cells of ∼10-30 time improvement (IC50 5-17 nM). The results of the Annexin-V/PI apoptotic assay demonstrated that many compounds induced significantly early (89-146%) and a dramatically late (556-1180%) cell death in comparison to the vehicle control of MCF-7 cells. SAR indicated that 5-deazaalloxazines have a higher selectivity for Abl-1 and FAK kinases than alloxazines. The correlations between GoldScore fitness into FAK and SRC kinases and IC50 against MCF-7 and A2780 cells were considerable (R2: 0.86-0.98).
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Affiliation(s)
- Waleed H Malki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, KSA
| | - Ahmed M Gouda
- Department of Pharmaceutical Chemistry, College of Pharmacy, Umm Al-Qura University, KSA; Department of Medicinal Chemistry, College of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Hamdy E A Ali
- Rangel College of Pharmacy, Health Science Center, Texas A&M University, Kingsville, TX 78363, United States
| | - Rabaa Al-Rousan
- The Ben and Maytee Fisch College of Pharmacy, The University of Texas at Tyler, Tyler, TX 75799, United States
| | - Doaa Samaha
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, Berlin 12489, Germany; Department of Pharmaceutical Chemistry, College of Pharmacy, Helwan University, Cairo 11795, Egypt
| | - Ashraf N Abdalla
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, KSA
| | - Juan Bustamante
- Rangel College of Pharmacy, Health Science Center, Texas A&M University, Kingsville, TX 78363, United States
| | - Zakaria Y Abd Elmageed
- Rangel College of Pharmacy, Health Science Center, Texas A&M University, Kingsville, TX 78363, United States
| | - Hamed I Ali
- Rangel College of Pharmacy, Health Science Center, Texas A&M University, Kingsville, TX 78363, United States; Department of Pharmaceutical Chemistry, College of Pharmacy, Helwan University, Cairo 11795, Egypt.
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Wang J, Yan YT, Fu SZ, Peng B, Bao LL, Zhang YL, Hu JH, Zeng ZP, Geng DH, Gao ZP. Anti-Influenza Virus (H5N1) Activity Screening on the Phloroglucinols from Rhizomes of Dryopteris crassirhizoma. Molecules 2017; 22:E431. [PMID: 28282885 PMCID: PMC6155227 DOI: 10.3390/molecules22030431] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 11/17/2022] Open
Abstract
For screening the active phloroglucinols on influenza virus (H5N1) from Dryopteris crassirhizoma NaKai, a database was established including twenty-three phloroglucinols that had been isolated from Dryopteris crassirhizoma. Their inhibitory effect on the neuraminidase (NA) of influenza virus H5N1 was screened by molecular docking. As a result, three candidates were selected. The rhizomes of D. crassirhizoma were subjected to isolation and purification processes to obtain the inhibitor candidates. Thirteen phloroglucinols were obtained, including three selected candidates and two new phloroglucinols. The five phloroglucinols were investigated for their inhibitory activity on NA in vitro. The results showed that dryocrassin ABBA and filixic acid ABA exhibited inhibitory effects on NA with IC50 as 18.59 ± 4.53 and 29.57 ± 2.48 μM, respectively, and the other three phloroglucinols showed moderate inhibitory activity. Moreover, the anti-influenza virus (H5N1) activity and cytotoxicity of dryocrassin ABBA and filixic acid ABA were tested on Madin-Darby canine kidney (MDCK) cells with the cell counting kit-8 (CCK8) method. The results confirmed that dryocrassin ABBA exhibited an inhibitory activity with low cytotoxicity (TC50 > 400 μM) against influenza virus (H5N1) which will have to be investigated in further detail. In conclusion, phloroglucinols from D. crassirhizoma were shown to have anti-influenza virus activity, and especially dryocrassin ABBA, one of the phloroglucinols, may have the potential to control influenza virus (H5N1) infection.
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Affiliation(s)
- Juan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Yan-Tao Yan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Shen-Zhen Fu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Bing Peng
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100000, China.
| | - Lin-Lin Bao
- Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS&PUMC), Beijing 100730, China.
| | - Yan-Ling Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Jing-Hong Hu
- School of Basic Medical Science, Beijing University of Chinese Medicine, Beijing 100029, China.
| | - Zu-Ping Zeng
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100000, China.
| | - Dong-Hao Geng
- College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Zeng-Ping Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
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8
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C(2)-Functionalization of pyrimidin-4(3H)-one derivatives in the synthesis of its biologically active derivatives. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1190-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Cai D, Zhang ZH, Chen Y, Yan XJ, Zou LJ, Wang YX, Liu XQ. Synthesis, Antibacterial and Antitubercular Activities of Some 5H-Thiazolo[3,2-a]pyrimidin-5-ones and Sulfonic Acid Derivatives. Molecules 2015; 20:16419-34. [PMID: 26378507 PMCID: PMC6332143 DOI: 10.3390/molecules200916419] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/01/2015] [Accepted: 09/03/2015] [Indexed: 11/16/2022] Open
Abstract
A series of 5H-thiazolo[3,2-a]pyrimidin-5-ones were synthesized by the cyclization reactions of S-alkylated derivatives in concentrated H2SO4. Upon treatment of S-alkylated derivatives at different temperatures, intramolecular cyclization to 7-(substituted phenylamino)-5H-thiazolo[3,2-a]pyrimidin-5-ones or sulfonation of cyclized products to sulfonic acid derivatives occurred. The structures of the target compounds were confirmed by IR, 1H-NMR, 13C-NMR and HRMS studies. The compounds were evaluated for their preliminary in vitro antibacterial activity against some Gram-positive and Gram-negative bacteria and screened for antitubercular activity against Mycobacterium tuberculosis by the broth dilution assay method. Some compounds showed good antibacterial and antitubercular activities.
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Affiliation(s)
- Dong Cai
- College of Basic Science, Liaoning Medical University, Jinzhou 121001, China.
| | - Zhi-Hua Zhang
- School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China.
| | - Yu Chen
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xin-Jia Yan
- College of Pharmacy, Harbin University of Commerce Harbin, Harbin 150076, China.
| | - Liang-Jing Zou
- College of Basic Science, Liaoning Medical University, Jinzhou 121001, China.
| | - Ya-Xin Wang
- College of Basic Science, Liaoning Medical University, Jinzhou 121001, China.
| | - Xue-Qi Liu
- College of Basic Science, Liaoning Medical University, Jinzhou 121001, China.
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Prukała D, Gierszewski M, Karolczak J, Sikorski M. Study of photophysical properties of 5-deazaalloxazine and 1,3-dimethyl-5-deazaalloxazine in dependence of pH using different spectral techniques. Phys Chem Chem Phys 2015; 17:18729-41. [PMID: 26120609 DOI: 10.1039/c5cp01566a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The photophysical properties of 5-deazaalloxazine and 1,3-dimethyl-5-deazalloxazine at different pH values were characterized using absorption spectra, fluorescence emission spectra, fluorescence excitation spectra, synchronous fluorescence spectra and total fluorescence spectra. Their ionised and/or neutral forms were discussed in comparison with those obtained for other derivatives of 5-deazaalloxazine and/or 5-deazaisoalloxazine. Steady-state and time-resolved techniques were used to study the protonation/deprotonation equilibria between cationic and neutral forms of both compounds and between neutral and monoanionic forms of 5-deazalloxazine, as well as between monoanionic forms of this compound and its dianion. We estimated pKa values for these equilibria both in the ground and excited states. Our steady-state and time-resolved measurements indicate that the cation of 5-deazaalloxazine in its isoalloxazinic form exhibits fluorescence that is quenched by protons in a dynamic process. Contrary to that, the cation of 1,3-dimethyl-5-deazaalloxazine has almost no fluorescence. Additionally, we found that the neutral forms of 5-deazalloxazine and 1,3-methyl-5-deazalloxazine are also quenched in acidic conditions by protons. In basic conditions, 5-deazaalloxazine forms two structurally different anions, namely the alloxazinic monoanion and the isoalloxazinic monoanion; both simultaneously dissociate into the isoalloxazinic dianion at even higher pH values. The synchronous fluorescence spectra and total fluorescence spectra demonstrated their suitability to characterize and differentiate different fluorescent forms of 5-deazalloxazine, namely: the cation, the neutral form, two monoanions, and the dianion, in a wide pH range.
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Affiliation(s)
- Dorota Prukała
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland.
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11
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Prukała D, Gierszewski M, Kubicki M, Pędziński T, Sikorska E, Sikorski M. Spectroscopy and photophysics of trimethyl-substituted derivatives of 5-deazaalloxazine. Experimental and theoretical approaches. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.09.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Insińska-Rak M, Sikorski M. Riboflavin interactions with oxygen-a survey from the photochemical perspective. Chemistry 2014; 20:15280-91. [PMID: 25302465 DOI: 10.1002/chem.201403895] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this short review we provide some insights to the main processes that riboflavin is involved in upon absorption of a photon. We describe riboflavin properties in its interactions with oxygen, comparing them to the properties of some other singlet oxygen sensitizers. Data are provided on riboflavin photosensitizing properties in vivo and in vitro, and its properties as an endogenous singlet oxygen sensitizer are discussed. We additionally report flavin catalytic role in organic synthesis and photochemical reactivity in solutions of riboflavin and some of its derivatives.
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Affiliation(s)
- Małgorzata Insińska-Rak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań (Poland), Fax: (+48) 61 829 1555.
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Kozielewicz P, Paradowska K, Erić S, Wawer I, Zloh M. Insights into mechanism of anticancer activity of pentacyclic oxindole alkaloids of Uncaria tomentosa by means of a computational reverse virtual screening and molecular docking approach. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1212-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Waly M, Elgogary S, Lashien A, Farag A. Synthesis andIn VitroAntitumor Evaluation of Some New Pyrimido[4,5-b]quinoxaline 5,10-Dioxide Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1999] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mohamed Waly
- Department of Chemistry, Faculty of Science; Damietta University; Egypt
| | - Sameh Elgogary
- Department of Chemistry, Faculty of Science; Damietta University; Egypt
- Department of Chemistry, Faculty of Science (Jazan); Jazan University; Saudi Arabia
| | - Ahmed Lashien
- Department of Chemistry, Faculty of Science; Damietta University; Egypt
| | - Ahmad Farag
- Department of Chemistry, Faculty of Science; Cairo University; Egypt
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Prukala D, Khmelinskii I, Koput J, Gierszewski M, Pędziński T, Sikorski M. Photophysics, excited-state double-proton transfer and hydrogen-bonding properties of 5-deazaalloxazines. Photochem Photobiol 2014; 90:972-88. [PMID: 24816028 DOI: 10.1111/php.12289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 05/06/2014] [Indexed: 11/30/2022]
Abstract
The photophysical properties of 5-deazaalloxazine and 1,3-dimethyl-5-deazaalloxazine were studied in different solvents. These compounds have higher values of fluorescence quantum yields and longer fluorescence lifetimes, compared to those obtained for their alloxazine analogs. Electronic structure and S0 -Si transitions were investigated using the ab initio methods [MP2, CIS(D), EOM-CCSD] with the correlation-consistent basis sets. Also the time-dependent density functional theory (TD-DFT) has been employed. The lowest singlet excited states of 5-deazaalloxazine and 1,3-dimethyl-5-deazaalloxazine are predicted to have the π, π* character, whereas similar alloxazines have two close-lying π, π* and n, π* transitions. Experimental steady-state and time-resolved spectral studies indicate formation of an isoalloxazinic excited state via excited-state double-proton transfer (ESDPT) catalyzed by an acetic acid molecule that forms a hydrogen bond complex with the 5-deazaalloxazine molecule. Solvatochromism of both 5-deazaalloxazine and its 1,3-dimethyl substituted derivative was analyzed using the Kamlet-Taft scale and four-parameter Catalán solvent scale. The most significant result of our studies is that the both scales show a strong influence of solvent acidity (hydrogen bond donating ability) on the emission properties of these compounds, indicating the importance of intermolecular solute-solvent hydrogen-bonding interactions in their excited state.
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Affiliation(s)
- Dorota Prukala
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Poznań, Poland
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Spectroscopy and Photophysics of Monomethyl-Substituted Derivatives of 5-Deazaalloxazine and 10-Ethyl-5-Deaza-Isoalloxazine. J Fluoresc 2013; 24:505-21. [PMID: 24272639 DOI: 10.1007/s10895-013-1320-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 11/07/2013] [Indexed: 11/27/2022]
Abstract
Steady-state and time-resolved spectra were used to describe the singlet and triplet states of 8-methyl-5-deazaalloxazine (8-Me-5-DAll), 9-methyl-5-deazaalloxazine (9-Me-5-DAll) and 10-ethyl-5-deaza-isoalloxazine (10-Et-5-DIAll). Solvatochromic properties were described using different polarity scales, including Δf and the four-parameter scale proposed by Catalán. The results indicate that the Catalán scale shows a strong influence of solvent acidity (hydrogen-bond donating ability) on the emission properties of 8-Me-5-DAll and 9-Me-5-DAll. These results indicate the importance of intermolecular solute-solvent hydrogen-bonding interactions in the excited state of these compounds. Contrary to deazaalloxazines, solvent acidity affects the absorption spectra of 10-Et-5-DIAll. Fluorescence lifetimes and quantum yields and also transient absorption spectra were determined for all of the compounds studied. Electronic structure and S(0)-S(i), S(0)-T(i ), T(1)-T(i) transitions energies and oscillator strengths were calculated using the TD-DFT methods. Theoretical calculations were compared to experimental data.
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Design, synthesis and structure–activity relationship of novel quinoxaline derivatives as cancer chemopreventive agent by inhibition of tyrosine kinase receptor. Eur J Med Chem 2013; 69:115-24. [DOI: 10.1016/j.ejmech.2013.07.049] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/28/2013] [Accepted: 07/30/2013] [Indexed: 11/21/2022]
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18
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Masek A, Chrzescijanska E, Zaborski M, Maciejewska M. Characterisation of the antioxidant acitivity of riboflavin in an elastomeric composite. CR CHIM 2012. [DOI: 10.1016/j.crci.2012.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Abu-Hashem AA, Aly AS. Synthesis of new pyrazole, triazole, and thiazolidine-pyrimido [4, 5-b] quinoline derivatives with potential antitumor activity. Arch Pharm Res 2012; 35:437-45. [PMID: 22477190 DOI: 10.1007/s12272-012-0306-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 08/08/2011] [Accepted: 08/16/2011] [Indexed: 10/28/2022]
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Ismail MA, Al-Shihry S, Arafa RK, El-Ayaan U. Synthesis, antimicrobial activity and molecular modeling study of substituted 5-aryl-pyrimido[5,4-c]quinoline-2,4-diones. J Enzyme Inhib Med Chem 2012; 28:530-8. [DOI: 10.3109/14756366.2011.654113] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Mohamed A. Ismail
- Department of Chemistry, College of Science, King Faisal University,
Hofuf, Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University,
Mansoura, Egypt
| | - Shar Al-Shihry
- Department of Chemistry, College of Science, King Faisal University,
Hofuf, Saudi Arabia
| | - Reem K. Arafa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University,
Cairo, Egypt
| | - Usama El-Ayaan
- Department of Chemistry, College of Science, King Faisal University,
Hofuf, Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University,
Mansoura, Egypt
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Sayin S, Uysal Akkuş G, Cibulka R, Stibor I, Yilmaz M. Synthesis of Flavin-Calix[4]arene Conjugate Derivatives. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000260] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ali HI, Nagamatsu T, Akaho E. Structure-based drug design and AutoDock study of potential protein tyrosine kinase inhibitors. Bioinformation 2011; 5:368-74. [PMID: 21383902 PMCID: PMC3044423 DOI: 10.6026/97320630005368] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 01/06/2011] [Indexed: 12/22/2022] Open
Abstract
Different classes of compounds were investigated for their binding affinities into different protein tyrosine kinases (PTKs) employing a novel flexible ligand docking approach by using AutoDock 3.05 and 4. These compounds include many flavin analogs, which were developed in our group with varying degrees of cytotoxic activity (comparable or moderately superior to cisplatin and ara-c), and database selected analogs. They were docked onto twelve different families of PTKs retrieved from the Protein Data Bank. These proteins are representatives of plausible models of interactions with chemotherapeutic agents. A comparative study of the intact co-crystallized ligands of various types of PTKs was carried out. Results revealed that the new class of 5-deazapteridine and steroid hybrid compounds VIa,b, and d, and the vertical-type bispyridodipyrimidine with n-hexyl chain junction between its N-10 and N-10 atoms Xa, exhibited non-selective PTK binding capacities, with the lowest (Gb). On the other hand, 2-amino benzoic acid analog IIa, phenoxypyrido [3, 4-d]pyrimidine derivative IVc, tyrosine containing tripeptide Vd, and the one from Sumisho data base 831 are proposed to have selective PTK binding affinities to certain classes of tyrosine kinases, namely, HGFR (c-met), ZAP-70, insulin receptor kinase, EGFR, respectively. All These compounds of highest affinities were docked within the binding sites of PTKs with reasonable RMSD and 1-5 hydrogen bonds.
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Affiliation(s)
- Hamed Ismail Ali
- Department of Pharmaceutical Chemistry, Helwan university, Helwan, Egypt
| | - Tomofumi Nagamatsu
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-Naka, Okayama 700-8530, Japan
| | - Eiichi Akaho
- Faculty of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3, Minatojima, Chuo-ku, Kobe 650-8586, Japan
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Efficient microwave-assisted synthesis of 5-deazaflavine derivatives. Molecules 2010; 15:7227-34. [PMID: 20966872 PMCID: PMC6259259 DOI: 10.3390/molecules15107227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 09/30/2010] [Accepted: 10/03/2010] [Indexed: 11/17/2022] Open
Abstract
A series of pyrimido[4,5-b]quinolines (5-deazaflavines), were synthesized by microwave assisted intramolecular cyclization. The N4-substituted-2,4-diamino-6-chloro-pyrimidine-5-carbaldehydes, were prepared by selective monoamination of 2-amino-4,6-dichloropyrimidine-5-carbaldehyde with aliphatic and aromatic amines.
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Nagamatsu T, Khan Kandahary R, M. L. Hossion A, Ashida N. Novel and Facil Synthesis and Evaluation of Antitumor Activities of 6,7-Bisaryl-1-(β-D-ribofuranosyl)pteridine-2,4(1H,3H)-diones. HETEROCYCLES 2010. [DOI: 10.3987/com-09-s(s)77] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Prukała D, Sikorski M. Electron ionization mass spectrometric study of substituted alloxazine-5-oxides and iso-alloxazine-5-oxide. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2009; 23:619-628. [PMID: 19165754 DOI: 10.1002/rcm.3909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The fragmentation pathways in electron ionization (EI) mass spectra of a series of new N(5)-oxides of alloxazines and iso-alloxazine are presented, and compared with those of substituted alloxazines and iso-alloxazine. The EI mass spectra of these compounds showed characteristic fragmentation pathways A, B and C, started by the ejection of atomic oxygen, a HNCO molecule and an OH(*) radical, respectively. On the basis of B/E and B(2)/E spectra, the mechanism of elimination of the OH(*) radical is discussed. The influence of the methyl substituent in the benzene ring of alloxazine on the mass fragmentation pathways is described.
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Affiliation(s)
- Dorota Prukała
- Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland.
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Shrestha AR, Ali HI, Ashida N, Nagamatsu T. Antitumor studies. Part 5: Synthesis, antitumor activity, and molecular docking study of 5-(monosubstituted amino)-2-deoxo-2-phenyl-5-deazaflavins. Bioorg Med Chem 2008; 16:9161-70. [DOI: 10.1016/j.bmc.2008.09.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 09/06/2008] [Accepted: 09/09/2008] [Indexed: 11/27/2022]
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Islam R, Ashida N, Nagamatsu T. Synthesis and regioselective N- and O-alkylation of 3-alkyl-5-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7(6H)-ones and 2-phenyl-9-propyl-9H-purin-6(1H)-one with evaluation of antiviral and antitumor activities. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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