1
|
Zbancioc G, Mangalagiu II, Moldoveanu C. The Effective Synthesis of New Benzoquinoline Derivatives as Small Molecules with Anticancer Activity. Pharmaceuticals (Basel) 2023; 17:52. [PMID: 38256886 PMCID: PMC10820420 DOI: 10.3390/ph17010052] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/12/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
In this study, some novel benzo[c]quinoline derivatives were synthesized, their structural characteristics were described, and their in vitro anticancer efficacy was investigated. The synthesis involves an initial quaternization of the nitrogen atom from benzo[c]quinoline and then a [3+2] dipolar cycloaddition reaction of the in situ formed ylide. The effectiveness of synthesis using traditional thermal heating (TH) compared to microwave (MW) and ultrasound (US) irradiation was investigated in detail. The setup of a reaction under MW or US irradiation offers a number of additional benefits: higher yields, a reduction in the amount of solvent used compared to TH, a reduction in the reaction time from hours to minutes, and a reduction in the amount of energy consumed. The structure of all the obtained compounds was proved by several spectral techniques (FTIR, HRMS, and NMR). All benzo[c]quinoline derivatives (quaternary salts and cycloadducts) along with ten other benzo[f]quinoline derivatives (quaternary salts and cycloadducts), previously obtained, were tested in an in vitro single-dose anticancer experiment. The results demonstrated that the cycloadducts 5a-c and 6a-c exhibit stronger anticancer activity than quaternary salts 3a-c. The most active compound is compound 5a, with anticancer activity on most of the cell lines studied, while the second most active compound is 6c, showing significant lethality for the SR leukemia cell line (17%). Structure-activity relationship (SAR) correlations are also included in the study.
Collapse
Affiliation(s)
- Gheorghita Zbancioc
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania
| | - Ionel I. Mangalagiu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania
- Institute of Interdisciplinary Research-CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, 11 Carol I, 700506 Iasi, Romania
| | - Costel Moldoveanu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania
| |
Collapse
|
2
|
Zbancioc G, Ciobanu CI, Mangalagiu II, Moldoveanu C. Ultrasound-Assisted Synthesis of Fluorescent Azatetracyclic Derivatives: An Energy-Efficient Approach. Molecules 2022; 27:molecules27103180. [PMID: 35630657 PMCID: PMC9147717 DOI: 10.3390/molecules27103180] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/12/2022] [Accepted: 05/14/2022] [Indexed: 11/24/2022]
Abstract
We report here an energy-efficient and straight synthesis of two new classes of derivatized fluorescent azatetracycles under ultrasound (US) irradiation. A first class of azatetracyclic compounds was synthesized by heterogeneous catalytic bromination of the α-keto substituent attached to the pyrrole moiety of the tetracyclic cycloadducts, while for the second, one class was synthesized by nucleophilic substitution of the bromide with the azide group. Comparative with conventional thermal heating (TH) under US irradiation, both types of reactions occur with substantially higher yields, shortened reaction time (from days to hours), lesser energy consumed, easier workup of the reaction, and smaller amounts of solvent required (at least three to five-fold less compared to TH), which make these reactions to be considered as energy efficient. The derivatized azatetracycle are blue emitters with λmax of fluorescence around 430–445 nm. A certain influence of the azatetracycle substituents concerning absorption and fluorescent properties was observed. Compounds anchored with a bulky azide group have shown decreased fluorescence intensity compared with corresponding bromides.
Collapse
Affiliation(s)
- Gheorghita Zbancioc
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Carol I Bvd., 700506 Iasi, Romania;
- Correspondence: (G.Z.); (C.M.); Tel.: +40-232-201278 (C.M.)
| | - Catalina-Ionica Ciobanu
- Institute of Interdisciplinary Research-CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, Carol I Bvd., 700506 Iasi, Romania;
| | - Ionel I. Mangalagiu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Carol I Bvd., 700506 Iasi, Romania;
- Institute of Interdisciplinary Research-CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, Carol I Bvd., 700506 Iasi, Romania;
| | - Costel Moldoveanu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Carol I Bvd., 700506 Iasi, Romania;
- Correspondence: (G.Z.); (C.M.); Tel.: +40-232-201278 (C.M.)
| |
Collapse
|
3
|
Mocanu CS, Niculaua M, Zbancioc G, Mangalagiu V, Drochioiu G. Novel Design of Neuropeptide-Based Drugs with β-Sheet Breaking Potential in Amyloid-Beta Cascade: Molecular and Structural Deciphers. Int J Mol Sci 2022; 23:ijms23052857. [PMID: 35269999 PMCID: PMC8911100 DOI: 10.3390/ijms23052857] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 02/07/2023] Open
Abstract
Our work discusses the investigation of 75 peptide-based drugs with the potential ability to break the β-sheet structures of amyloid-beta peptides from senile plaques. Hence, this study offers a unique insight into the design of neuropeptide-based drugs with β-sheet breaker potential in the amyloid-beta cascade for Alzheimer’s disease (AD). We started with five peptides (15QKLVFF20, 16KLVFF20, 17LVFF20, 16KLVF19 and 15QKLV18), to which 14 different organic acids were attached at the N-terminal. It was necessary to evaluate the physiochemical features of these sequences due to the biological correlation with our proposal. Hence, the preliminary analysis of different pharmacological features provided the necessary data to select the peptides with the best biocompatibility for administration purposes. Our approaches demonstrated that the peptides 17LVFF20, NA-17LVFF20, 16KLVF19 and NA-16KLVF19 (NA-nicotinic acid) have the ability to interfere with fibril formation and hence improve the neuro and cognitive functions. Moreover, the peptide conjugate NA-16KLVF19 possesses attractive pharmacological properties, demonstrated by in silico and in vitro studies. Tandem mass spectrometry showed no fragmentation for the spectra of 16KLVF19. Such important results suggest that under the action of protease, the peptide cleavage does not occur at all. Additionally, circular dichroism confirmed docking simulations and showed that NA-16KLVF19 may improve the β-sheet breaker mechanism, and thus the entanglement process of amyloid-beta peptides can be more effective.
Collapse
Affiliation(s)
- Cosmin Stefan Mocanu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania; (C.S.M.); (G.Z.)
| | - Marius Niculaua
- Research Centre for Oenology Iași, Romanian Academy Iași Branch, 8 Carol I, 700505 Iasi, Romania;
| | - Gheorghita Zbancioc
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania; (C.S.M.); (G.Z.)
| | - Violeta Mangalagiu
- Department of Exact and Natural Sciences–CERNESIM Center, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania;
- Faculty of Food Engineering, Stefan cel Mare University of Suceava, 13 Universitatii Str., 720229 Suceava, Romania
| | - Gabi Drochioiu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania; (C.S.M.); (G.Z.)
- Correspondence:
| |
Collapse
|
4
|
Diaconu D, Amăriucăi-Mantu D, Mangalagiu V, Antoci V, Zbancioc G, Mangalagiu II. Ultrasound assisted synthesis of hybrid quinoline-imidazole derivatives: a green synthetic approach. RSC Adv 2021; 11:38297-38301. [PMID: 35498117 PMCID: PMC9044051 DOI: 10.1039/d1ra07484a] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 11/14/2021] [Indexed: 11/21/2022] Open
Abstract
A green, straightforward and efficient study for obtaining hybrid quinoline-imidazole derivatives under ultrasound (US) irradiation as well as under conventional thermal heating (TH) has been presented. The reaction pathway involves only two steps: the N-alkylation of imidazole ring and a Huisgen [3 + 2] dipolar cycloaddition reaction of ylides to dimethyl acetylenedicarboxylate (DMAD). For both types of reactions, a green workup procedure under US irradiation has been presented. Under US irradiation, the N-alkylation of nitrogen atoms from the imidazole nucleus has outstanding benefits in terms of reaction time, energy consumption and yields, and can thereby be considered an environmentally friendly method. Forty new hybrid quinoline-imidazole compounds have been synthesized: 18 salts, 8 dihydro-benzopyrrolo imidazolo quinoline, 9 benzopyrrolo-imidazolo quinoline and 5 dihydro-pyrroloquinoxaline quinoline cycloadducts.
Collapse
Affiliation(s)
- Dumitrela Diaconu
- Alexandru Ioan Cuza University of Iasi, Institute of Interdisciplinary Research, Department of Exact and Natural Sciences - CERNESIM Center 11 Carol I Bd. 700506 Iasi Romania
| | - Dorina Amăriucăi-Mantu
- Alexandru Ioan Cuza University of Iasi, Faculty of Chemistry 11 Carol I Bd. 700506 Iasi Romania
| | - Violeta Mangalagiu
- Alexandru Ioan Cuza University of Iasi, Institute of Interdisciplinary Research, Department of Exact and Natural Sciences - CERNESIM Center 11 Carol I Bd. 700506 Iasi Romania.,Stefan cel Mare University of Suceava, Faculty of Food Engineering Str. Universitatii 13 Suceava Romania
| | - Vasilichia Antoci
- Alexandru Ioan Cuza University of Iasi, Faculty of Chemistry 11 Carol I Bd. 700506 Iasi Romania
| | - Gheorghita Zbancioc
- Alexandru Ioan Cuza University of Iasi, Faculty of Chemistry 11 Carol I Bd. 700506 Iasi Romania
| | - Ionel I Mangalagiu
- Alexandru Ioan Cuza University of Iasi, Faculty of Chemistry 11 Carol I Bd. 700506 Iasi Romania .,Alexandru Ioan Cuza University of Iasi, Institute of Interdisciplinary Research, Department of Exact and Natural Sciences - CERNESIM Center 11 Carol I Bd. 700506 Iasi Romania
| |
Collapse
|
5
|
Moldoveanu C, Mangalagiu I, Zbancioc G. Fluorescent Azasteroids through Ultrasound Assisted Cycloaddition Reactions. Molecules 2021; 26:molecules26165098. [PMID: 34443688 PMCID: PMC8400541 DOI: 10.3390/molecules26165098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/26/2021] [Revised: 08/10/2021] [Accepted: 08/21/2021] [Indexed: 11/16/2022] Open
Abstract
We report here the synthesis and optical spectral properties of several new azasteroid derivatives. The formation of these compounds was explained based on the most probable mechanism. The luminescent heterocycles were synthesized by 1,3-dipolar cycloaddition reactions between benzo[f]quinoline and methylpropiolate or dimethyl acetylenedicarboxylate (DMAD). A selective and efficient way for [3+2]-dipolar cycloaddition of benzo[f]quinolinium ylides under ultrasound (US) irradiation (20 kHz processing frequency) is presented. We report substantially higher yields under US irradiation, whereas the solvent amounts required are at least three-fold less compared to classical heating. The azasteroid derivatives are blue emitters with λmax of fluorescence around 430–450 nm. A certain influence of the azasteroid substituents concerning absorption and fluorescent properties was observed. Compounds anchored with a bulky pivaloyl group or without a C=O carbonyl group have shown increased fluorescence intensity.
Collapse
Affiliation(s)
- Costel Moldoveanu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania;
- Correspondence: (C.M.); (G.Z.); Tel.: +40-232-201278 (C.M. & G.Z.)
| | - Ionel Mangalagiu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania;
- Institute of Interdisciplinary Research-CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, 11 Carol I, 700506 Iasi, Romania
| | - Gheorghita Zbancioc
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania;
- Correspondence: (C.M.); (G.Z.); Tel.: +40-232-201278 (C.M. & G.Z.)
| |
Collapse
|
6
|
Antoci V, Oniciuc L, Amariucai-Mantu D, Moldoveanu C, Mangalagiu V, Amarandei AM, Lungu CN, Dunca S, Mangalagiu II, Zbancioc G. Benzoquinoline Derivatives: A Straightforward and Efficient Route to Antibacterial and Antifungal Agents. Pharmaceuticals (Basel) 2021; 14:ph14040335. [PMID: 33917439 PMCID: PMC8067460 DOI: 10.3390/ph14040335] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 03/11/2021] [Revised: 03/26/2021] [Accepted: 04/02/2021] [Indexed: 02/07/2023] Open
Abstract
We report here the design, synthesis, experimental and in silico evaluation of the antibacterial and antifungal activity of some new benzo[f]quinoline derivatives. Two classes of benzo[f]quinolinium derivatives—(benzo[f]quinolinium salts (BQS) and pyrrolobenzo[f]quinolinium cycloadducts (PBQC)—were designed and obtained in two steps via a direct and facile procedure: quaternization followed by a cycloaddition reaction. The synthesized compounds were characterized by elemental and spectral analysis (FT-IR, 1H-NMR, 13C-NMR). The antimicrobial assay reveals that the BQS salts have an excellent quasi-nonselective antifungal activity against the fungus Candida albicans (some of them higher that the control drug nystatin) and very good antibacterial activity against the Gram positive bacterium Staphylococcus aureus. The PBQC compounds are inactive. Analysis of the biological data reveals interesting SAR correlations in the benzo[f]quinolinium series of compounds. The in silico studies furnished important data concerning the pharmacodynamics, pharmacokinetics and ADMET parameters of the BQS salts. Studies of the interaction of each BQS salt 3a–o with ATP synthase in the formed complex, reveal that salts 3j, 3i, and 3n have the best fit in a complex with ATP synthase. Study of the interaction of each BQS salt 3a-o with TOPO II in the formed complex reveals that salts 3j and 3n have the best-fit in complex with TOPO II. The in silico ADMET studies reveal that the BQS salts have excellent drug-like properties, including a low toxicity profile. Overall, the experimental and in silico studies indicate that compounds 3e and 3f (from the aliphatic series), respectively, and 3i, 3j and 3n (from the aromatic series), are promising leading drug candidates.
Collapse
Affiliation(s)
- Vasilichia Antoci
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
| | - Liliana Oniciuc
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
| | - Dorina Amariucai-Mantu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
| | - Costel Moldoveanu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
| | - Violeta Mangalagiu
- Institute of Interdisciplinary Research—CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, 11 Carol I, 700506 Iasi, Romania;
| | | | - Claudiu N. Lungu
- Department of Surgery, Emergency Clinical Hospital, 810325 Braila, Romania
- Correspondence: (C.N.L.); (S.D.); (G.Z.)
| | - Simona Dunca
- Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania;
- Correspondence: (C.N.L.); (S.D.); (G.Z.)
| | - Ionel I. Mangalagiu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
- Institute of Interdisciplinary Research—CERNESIM Centre, Alexandru Ioan Cuza University of Iasi, 11 Carol I, 700506 Iasi, Romania;
| | - Gheorghita Zbancioc
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd, 700506 Iasi, Romania; (V.A.); (L.O.); (D.A.-M.); (C.M.); (I.I.M.)
- Correspondence: (C.N.L.); (S.D.); (G.Z.)
| |
Collapse
|
7
|
Zaharia M, Mihai M, Roman T, Zbancioc G, Pui A, Gradinaru RV, Logigan C, Drochioiu G. Unusual ferrite induced photohydrolysis of dinitrophenols to nonaromatic and nontoxic derivatives. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112497] [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] [Indexed: 11/25/2022]
|
8
|
Moldoveanu C, Mangalagiu I, Isac DL, Airinei A, Zbancioc G. A New Pathway for the Synthesis of a New Class of Blue Fluorescent Benzofuran Derivatives. Molecules 2018; 23:E1968. [PMID: 30082667 PMCID: PMC6222448 DOI: 10.3390/molecules23081968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 07/26/2018] [Accepted: 08/03/2018] [Indexed: 11/16/2022] Open
Abstract
In this study an efficient and straightforward method for obtaining a new class of blue fluorescent bezofuran derivatives, under microwave irradiation, as well as under conventional thermal heating, is presented. Under conventional TH the reactions occur selectively, and a single type of benzofuran ester derivative was obtained. The synthesis under MW irradiation also led to benzofuran derivatives, but in a time-dependent manner. Irradiation for a short period of time led to a mixture of two types of benzofuran derivatives (3a⁻c and 4a⁻c), while MW irradiation for a longer period of time led to a single type of benzofuran (3-methylbenzofuran), the reaction becoming highly selective. Taking into consideration the advantages offered by MW irradiation in terms of a substantial decrease of solvent consumed, a substantial reduction in reaction time (from days to hours), and a consequent diminution in energy consumption, these methods could be considered environmentally friendly. Here, feasible reaction mechanisms for the benzofuran derivatives formation are described. The absorption and fluorescence emission of the obtained benzofuran derivatives were studied, with part of these compounds being intense blue emitters. A certain influence of the benzofuran substituents concerning absorption and fluorescent properties was observed. Only compounds anchored with a carbomethoxy group of furan ring have shown good quantum yields.
Collapse
Affiliation(s)
- Costel Moldoveanu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Iasi 700506, Romania.
| | - Ionel Mangalagiu
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Iasi 700506, Romania.
| | | | - Anton Airinei
- Petru Poni Institute of Macromolecular Chemistry, Iasi 700487, Romania.
| | - Gheorghita Zbancioc
- Chemistry Department, Alexandru Ioan Cuza University of Iasi, Iasi 700506, Romania.
| |
Collapse
|
9
|
Lupaescu AV, Jureschi M, Ciobanu CI, Ion L, Zbancioc G, Petre BA, Drochioiu G. FTIR and MS Evidence for Heavy Metal Binding to Anti-amyloidal NAP-Like Peptides. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9672-2] [Citation(s) in RCA: 6] [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] [Indexed: 01/02/2023]
|
10
|
Aricu A, Ciocarlan A, Lungu L, Barba A, Shova S, Zbancioc G, Mangalagiu II, D’Ambrosio M, Vornicu N. Synthesis, antibacterial, and antifungal activities of new drimane sesquiterpenoids with azaheterocyclic units. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1665-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Mantu D, Antoci V, Moldoveanu C, Zbancioc G, Mangalagiu II. Hybrid imidazole (benzimidazole)/pyridine (quinoline) derivatives and evaluation of their anticancer and antimycobacterial activity. J Enzyme Inhib Med Chem 2016; 31:96-103. [PMID: 27250919 DOI: 10.1080/14756366.2016.1190711] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The design, synthesis, structure, and in vitro anticancer and antimycobacterial activity of new hybrid imidazole (benzimidazole)/pyridine (quinoline) derivatives are described. The strategy adopted for synthesis is straight and efficient, involving a three-step setup procedure: N-acylation, N-alkylation, and quaternization of nitrogen heterocycle. The solubility in microbiological medium and anticancer and antimycobacterial activity of a selection of new synthesized compounds were evaluated. The hybrid derivatives have an excellent solubility in microbiological medium, which make them promising from the pharmacological properties point of view. One of the hybrid compounds, 9 (with a benzimidazole and 8-aminoquinoline skeleton), exhibits a very good and selective antitumor activity against Renal Cancer A498 and Breast Cancer MDA-MB-468. Moreover, the anticancer assay suggests that the hybrid Imz (Bimz)/2-AP (8-AQ) compounds present a specific affinity to Renal Cancer A498. Concerning the antimycobacterial activity, only the hybrid compound, 9, has a significant activity. SAR correlations have been performed.
Collapse
Affiliation(s)
- Dorina Mantu
- a Faculty of Chemistry , "Alexandru Ioan Cuza" University of Iasi , Iasi , Romania
| | - Vasilichia Antoci
- a Faculty of Chemistry , "Alexandru Ioan Cuza" University of Iasi , Iasi , Romania
| | - Costel Moldoveanu
- a Faculty of Chemistry , "Alexandru Ioan Cuza" University of Iasi , Iasi , Romania
| | - Gheorghita Zbancioc
- a Faculty of Chemistry , "Alexandru Ioan Cuza" University of Iasi , Iasi , Romania
| | - Ionel I Mangalagiu
- a Faculty of Chemistry , "Alexandru Ioan Cuza" University of Iasi , Iasi , Romania
| |
Collapse
|
12
|
Moldoveanu C, Zbancioc G, Mantu D, Maftei D, Mangalagiu I. The Cycloaddition of the Benzimidazolium Ylides with Alkynes: New Mechanistic Insights. PLoS One 2016; 11:e0156129. [PMID: 27224656 PMCID: PMC4880325 DOI: 10.1371/journal.pone.0156129] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 05/10/2016] [Indexed: 11/24/2022] Open
Abstract
New insights concerning the reaction mechanism in the cycloaddition reaction of benzimidazolium ylides to activated alkynes are presented. The proposed pathway leading both to 2-(1H-pyrrol-1-yl)anilines and to pyrrolo[1,2-a]quinoxalin-4(5H)-ones involves an opening of the imidazole ring from the cycloaddition product, followed by a nucleophilic attack of the aminic nitrogen to a proximal carbonyl group and the elimination of a leaving group. The mechanistic considerations are fully supported by experimental data, including the XRD resolved structure of the key reaction intermediate.
Collapse
Affiliation(s)
- Costel Moldoveanu
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
| | - Gheorghita Zbancioc
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
- * E-mail:
| | - Dorina Mantu
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
| | - Dan Maftei
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
| | - Ionel Mangalagiu
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
| |
Collapse
|
13
|
Zbancioc G, Mangalagiu II, Moldoveanu C. Ultrasound assisted synthesis of imidazolium salts: an efficient way to ionic liquids. Ultrason Sonochem 2015; 23:376-384. [PMID: 25465880 DOI: 10.1016/j.ultsonch.2014.10.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 10/23/2014] [Accepted: 10/27/2014] [Indexed: 06/04/2023]
Abstract
In this study a straightforward and efficient approach concerning synthesis of 1,3-diazole derivatives under ultrasound (US) irradiation as well as under conventional thermal heating (TH) is presented. N-alkylation under US irradiation may be considered environmentally friendly in terms of higher yields, smaller amounts of solvent used and an overall energy efficiency due to a substantial reduction of reaction times. A comparative study of ultrasound vs. conventional conditions has been performed. Overall, the use of US proved to be more efficient than TH. A possible explanation concerning the different behavior of imidazole and benzimidazole in the N1-alkylation reactions under US irradiation was proposed.
Collapse
|
14
|
Zbancioc AM, Miron A, Tuchilus C, Rotinberg P, Mihai CT, Mangalagiu II, Zbancioc G. Synthesis and in vitro analysis of novel dihydroxyacetophenone derivatives with antimicrobial and antitumor activities. Med Chem 2015; 10:476-83. [PMID: 24188494 DOI: 10.2174/15734064113096660070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 10/03/2013] [Accepted: 10/26/2013] [Indexed: 11/22/2022]
Abstract
Herein we report a feasible study concerning the design, syntheses and in vitro antimicrobial and antitumoral activities of some novel compounds with dihydroxyacetophenone (DA) moiety. An efficient and general method for the preparation of diazine with dihydroxyacetophenone (DDA) skeleton under conventional thermal heating (TH), microwave (MW) and ultrasounds (US) irradiation is presented. Antimicrobial and antitumoral tests prove that some dihydroxyacetophenone compounds (the brominated derivatives BrDA 3) have a significant biological activity. It is also to be pointed out that, basically all the dihydroxyacetophenone derivatives proved to have a powerful antibacterial activity against drug resistant Gram-negative strain Pseudomonas aeruginosa ATCC 27853. Of particular interest could be the excellent antibacterial activity of our dihydroxyacetophenone compounds against drug resistant Gram-negative strain Pseudomonas aeruginosa.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Gheorghita Zbancioc
- "Al. I. Cuza" University of Iasi, Department of Organic and Biochemistry, 11 Carol I, Iasi-700506, Romania.
| |
Collapse
|
15
|
Zbancioc G, Zbancioc AM, Mangalagiu II. Ultrasound and microwave assisted synthesis of dihydroxyacetophenone derivatives with or without 1,2-diazine skeleton. Ultrason Sonochem 2014; 21:802-811. [PMID: 24139876 DOI: 10.1016/j.ultsonch.2013.09.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 09/20/2013] [Accepted: 09/24/2013] [Indexed: 06/02/2023]
Abstract
A thorough study concerning O-alkylation and α-bromination of dihydroxyacetophenone (DA) and N-alkylation of 1,2-diazine, under ultrasound (US) and microwave (MW) irradiation as well as under conventional thermal heating (TH) is presented. Under US and MW irradiation the yields are higher, the amount of used solvent decreases substantially, the reaction time decreases considerable (from hours or days to minutes) and the consumed energy decreases, consequently the O-alkylation, α-bromination and N-alkylation methods could be considered environmentally friendly. A selective and efficient way to either bis-O-alkylation or mono-O-alkylation of DA has been found, the relative position of the two hydroxyl groups on the phenyl moiety being compulsory. A selective and efficient way for α-bromination in heterogeneous catalysis of DA derivatives under US irradiation is presented. The N-alkylation reaction of DA under US and MW irradiation proved to be the most convenient setup procedure for these types of reactions. Overall, the use of US proved to be more efficient than MW or TH.
Collapse
Affiliation(s)
- Gheorghita Zbancioc
- "Al. I. Cuza" University of Iasi, Organic and Biochemistry Department, Bd. Carol 11, 700506 Iasi, Romania
| | | | | |
Collapse
|
16
|
Zbancioc G, Moldoveanu C, Zbancioc A, Mangalagiu I. Microwave Assisted Synthesis of New Pyrrolopyridazine Derivatives with Acetophenone Skeleton. Part V. CMIC 2014. [DOI: 10.2174/2213335601666140210211520] [Citation(s) in RCA: 5] [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: 11/22/2022]
|
17
|
Zaharia M, Borhan A, Gherca D, Pui A, Gradinaru R, Zbancioc G, Drochioiu G. Study on the mechanism of ferrite-induced dinitrophenol photodegradation. Eur J Mass Spectrom (Chichester) 2014; 20:193-197. [PMID: 24895780 DOI: 10.1255/ejms.1267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report here the effectiveness of gas chromatography mass spectrometry techniques in establishing the ferrite-associated photocatalytic degradation mechanism of pesticide 2,4-dinitrophenol (2,6-DNP). Unlike the previously discussed DNP-degradation mechanisms that involve either oxidation or reduction reactions, ferrite-based ultraviolet (UV) photodegradation of DNP affords the nontoxic 6-hydroxy-3,5-dinitrohexa-2,4-dienal by an unusual water addition to the benzene core. We searched for and demonstrated the presence of an epoxide of DNP within the photodegradation process, which may unambiguously explain the novel photochemical mechanism. During the 15 min UV photoinduced process, DNP degradation efficiency on the zinc ferrite catalyst was calculated to be 82%, whereas the first-order kinetic rate constant k was as high as 3.4 x 10(-2)min(-1).
Collapse
|
18
|
Maftei D, Zbancioc G, Humelnicu I, Mangalagiu I. Conformational effects on the lowest excited states of benzoyl-pyrrolopyridazine: insights from PCM time-dependent DFT. J Phys Chem A 2013; 117:3165-75. [PMID: 23527600 DOI: 10.1021/jp311396m] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Time-dependent density functional theory (TD-DFT) computations and steady-state electronic spectroscopy measurements are performed on two recently synthesized pyrrolopyridazines to account for the detrimental effect of benzoyl substitution on the blue fluorescence emission. In the case of the highly fluorescent ester derivative, planar in ground state, we show that TD-DFT using the PBE0 and B3LYP hybrid functionals in the state-specific solvation approach provides an accurate description of absorption and emission properties. In benzoyl-pyrrolopyridazine, the (pretwisted) orientations of the benzoyl group and the solvent polarity are both found to modulate the nature of the lowest excited states. The first excited state has nπ* character at ground-state geometry of the main conformer (carbonyl group facing the diazine ring) in nonpolar solvents and become nearly degenerate with a ππ* state in polar solvents. The latter, lower than the nπ* state at the ground state geometry of a minor conformer, relaxes into a twisted intramolecular charge transfer. Experimental absorption and excitation spectra are consistent with the conformational-dependent picture of the lowest excited state (as derived from TD-DFT). A rather qualitative agreement in predicting the fluorescence emission wavelength is achieved in computations employing the CAM-B3LYP and BH&HLYP functionals, whereas global hybrids with low or moderate amounts of exact exchange exhibit the expected TD-DFT failure with up to 1 eV underestimated transition energies.
Collapse
Affiliation(s)
- Dan Maftei
- Department of Physical and Theoretical Chemistry, Al. I. Cuza University, 11 Bd. Carol I, 700506 Iasi, Romania
| | | | | | | |
Collapse
|
19
|
Zbancioc G, Florea O, Jones PG, Mangalagiu II. An efficient and selective way to new highly functionalized coronands or spiro derivatives using ultrasonic irradiation. Ultrason Sonochem 2012; 19:399-403. [PMID: 21908224 DOI: 10.1016/j.ultsonch.2011.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 07/25/2011] [Accepted: 08/06/2011] [Indexed: 05/31/2023]
Abstract
A new, selective, straightforward and general method for preparation of highly functionalized coronands or spiro derivatives bearing 1,2-dihydroxyacetophenone unit, under conventional conditions and ultrasonic irradiation, is reported. The reaction setup involves only one step, acylation of an α-chloro-3,4-dihydroxyacetophenone with phthaloyl dichloride derivatives. 1,3- and 1,4-Phthaloyl dichloride derivatives leads to coronands only, while 1,2-phthaloyl dichlorides lead either to coronands or to spiro derivatives. A feasible explanation for the different behavior between conventional and ultrasound methods could be the different reaction mechanism involved in the two procedures: tetrahedral nucleophilic substitution under conventional conditions and radical substitution under ultrasound. Ultrasound induces a remarkable acceleration of the reactions (from days to minutes) and, most significantly, the yields are twice as high. A feasible explanation for the efficiency of the reactions under ultrasonic irradiation is presented.
Collapse
Affiliation(s)
- Gheorghita Zbancioc
- AlI Cuza University of Iasi, Organic Chemistry Department, Bd Carol 11, 700506 Iasi, Romania
| | | | | | | |
Collapse
|
20
|
Tucaliuc R, Cotea VV, Moldoveanu C, Zbancioc G, Deleanu C, Jones PG, Mangalagiu II. An efficient and selective route to hybrid trifluoromethyl-substituted γ-lactones or fused nitrogen derivatives via cascade reactions. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.093] [Citation(s) in RCA: 3] [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: 11/27/2022]
|
21
|
Gradinaru R, Ionas A, Pui A, Zbancioc G, Drochioiu G. Interaction of inorganic mercury with CoA-SH and acyl-CoAs. Biometals 2011; 24:1115-21. [PMID: 21698371 DOI: 10.1007/s10534-011-9472-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Accepted: 06/06/2011] [Indexed: 10/18/2022]
Abstract
Sulfur containing biomolecules are involved in complexes with mercury. CoA is an important cofactor for many enzymes involved in metabolic processes. Fatty acyl-CoA-thioesters, substrates of mitochondrial ß-oxidation, are sulfur containing compounds and potential mercury ligands. The CoA-Hg(2+) complex can be easily assessed by UV-Vis spectroscopy or indirectly by antibacterial tests that reconfirmed the protective role of CoA on E. coli. The characteristics of these complexes were determined by means of FTIR spectroscopy. The reverse phase liquid chromatography combined with electrospray ionization tandem mass spectrometry was used for detection of the side-product that resulted through the cleavage of thioesters in the presence of mercury. An unexpected result was the detection of octathioic acid as a product. Our study shows that mitochondrial β-oxidation can be affected by thioesters depletion assisted by Hg(2+). The GC-MS technique could be used to detect some possible mitochondrial injuries due to the heavy metal ions.
Collapse
Affiliation(s)
- Robert Gradinaru
- Department of Chemistry, Al. I. Cuza University, Ave. Carol I No. 11, Jassy, Romania.
| | | | | | | | | |
Collapse
|
22
|
Murariu M, Stela Dragan E, Adochitei A, Zbancioc G, Drochioiu G. Silver-induced conformational changes of polypeptides: a CD study. J Pept Sci 2011; 17:512-9. [PMID: 21538706 DOI: 10.1002/psc.1359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 12/29/2010] [Accepted: 01/12/2011] [Indexed: 01/26/2023]
Abstract
The role of silver ions in various pathologies, as well as their effect on peptide conformation and properties are less understood. Consequently, we synthesized several peptides with various residues in their sequence to investigate silver-induced conformational changes at various pH values by Circular Dichroism spectroscopy. Uniquely, the glycine-based, histidine-containing peptide showed a severe change from a random coil and β-turn conformation to large α-helices during silver binding. When comparing the effect of silver ions on the conformation of bradykinin a similar tendency was found. Besides, silver ions reduced the amyloid-β peptide tendency to aggregation. Our results suggest a specific and protective role for silver ions in brain pathologies, which is related to their high affinity toward physiologically and pharmacologically active peptides. Fourier transform infrared spectroscopy studies as well as the mass spectrometric ones support our conclusions.
Collapse
Affiliation(s)
- Manuela Murariu
- Petru Poni Institute of Macromolecular Chemistry, 41a Grigore Ghica Voda Alee, Iasi -700487, Romania
| | | | | | | | | |
Collapse
|
23
|
Mantu D, Luca MC, Moldoveanu C, Zbancioc G, Mangalagiu II. Synthesis and antituberculosis activity of some new pyridazine derivatives. Part II. Eur J Med Chem 2010; 45:5164-8. [PMID: 20813433 DOI: 10.1016/j.ejmech.2010.08.029] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 08/09/2010] [Accepted: 08/10/2010] [Indexed: 11/29/2022]
Abstract
A series of eighteen novel compounds with pyridazine moiety were synthesized and their in vitro antituberculosis activities have been evaluated. A fast, general, and facile method for preparation of pyridazine derivatives in moderate to excellent yields is presented. Three compounds were found to be moderate active against Mycobacterium tuberculosis. Correlation of structure-biological activity has been done.
Collapse
Affiliation(s)
- Dorina Mantu
- Al. I. Cuza University of Iasi, Organic and Biochemistry Department, Bd. Carol 11, 700506 Iasi, Romania
| | | | | | | | | |
Collapse
|
24
|
|
25
|
Matarneh CA, Ciobanu CI, Mangalagiu V, Zbancioc G, Danac R. Microwave Assisted Synthesis of Six Member Ring Azaheterocycles and Their Antimycobacterial and Anticancer Evaluation. Rev Chim 2001. [DOI: 10.37358/rc.20.3.7999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report herein a comparative study concerning the influence of microwave (MW) irradiation comparative with conventional thermal heating (TH) in the reaction of six member ring azaheterocycles (derived from phenanthroline, quinoline, isoquinoline and phthalazine) with ethyl cyanoformate, and their anticancer and antimycobacterial activity. Under MW irradiation the reactions have some undeniable advantages: the reaction times decrease dramatically (from hours to minutes), the yields are higher, the reactions became selective in some cases (4,7-phenanthrolinium and phthalazinium ylides). The decreasing of reaction time+ from hours to minutes corroborated with the fact that in majority of cases the yield are higher and the selectivity is better, allow us to say that these reactions could be considered as eco-friendly. As far for biological activity, three of the compounds exhibited a significant antitumor activity against some cancer cell lines including prostate cancer, leukemia, renal cancer, lung cancer and breast cancer. The best potency in terms of growth inhibition of tumor cells (~45%) was shown by compound 4a against renal cancer A498 and ovarian cancer SK-OV-3 cells. The tested compounds have not shown any antimycobacterial activity against Mycobacterium tuberculosis.
Collapse
|