1
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Yu F, Li SY, Yang HR, Shen J, Yin MX, Tian YR, Zhang YT, Kong XW, Lei XW. Crystal-Rigidifying Strategy in Hybrid Manganese Halide to Achieve Narrow Green Emission and High Structural Stability. Inorg Chem 2024; 63:14116-14125. [PMID: 39007761 DOI: 10.1021/acs.inorgchem.4c01953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Although organic-inorganic hybrid Mn2+ halides have advanced significantly, achieving high stability and narrow-band emission remains enormously challenging owing to the weak ionic nature and soft crystal lattice of the halide structure. To address these issues, we proposed a cationic engineering strategy of long-range cation π···π stacking and C-H···π interactions to simultaneously improve the crystal structural stability and rigidity. Herein, two organic zero-dimensional (0D) manganese halide hybrids of (BACQ)2MnX4 [BACQ = 4-(butylamino)-7-chloroquinolin-1-ium; X = Cl and Br] were synthesized. (BACQ)2MnX4 display strong green-light emissions with the narrowest full width at half-maximum (fwhm) of 39 nm, which is significantly smaller than those of commercial green phosphor β-SiAlON:Eu2+ and most of reported manganese halides. Detailed Hirshfeld surface analyses demonstrate the rigid environment around the [MnX4]2- units originating from the interactions between [BACQ]+. The rigid crystal structure weakens the electron-phonon coupling and renders narrow fwhm of these manganese halides, which is further confirmed by temperature-dependent emission spectra. Remarkably, (BACQ)2MnX4 realizes outstanding structural and luminescence stabilities in various extreme environments. Benefiting from the excellent performance, these Mn2+ halides are used to assemble light-emitting diodes with a wide color gamut of 105% of the National Television System Committee 1931 standard, showcasing the advanced applications in liquid-crystal-display backlighting.
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Affiliation(s)
- Fang Yu
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Shu-Yao Li
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Hai-Rong Yang
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Jie Shen
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Ming-Xia Yin
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Yan-Rui Tian
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Ya-Tong Zhang
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiang-Wen Kong
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiao-Wu Lei
- School of Chemistry, Chemical Engineer and Materials, Institute of Optoelectronic Functional Materials, Jining University, Qufu, Shandong 273155, P. R. China
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2
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Nevrlka F, Bědroň A, Valenta M, Tranová L, Stýskala J. Study of Direct N7 Regioselective tert-Alkylation of 6-Substituted Purines and Their Modification at Position C6 through O, S, N, and C Substituents. ACS OMEGA 2024; 9:17368-17378. [PMID: 38645315 PMCID: PMC11024948 DOI: 10.1021/acsomega.4c00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/26/2024] [Accepted: 03/27/2024] [Indexed: 04/23/2024]
Abstract
A new N7 direct regioselective method allowing the introduction of tert-alkyl groups into appropriate 6-substituted purine derivatives is developed. This method is based on a reaction of N-trimethylsilylated purines with a tert-alkyl halide using SnCl4 as a catalyst. In this work, we study the structure and optimal reaction conditions leading to the N7 isomer and in some cases also to the N9 isomer. The main goal is devoted to preparing 7-(tert-butyl)-6-chloropurine as a suitable compound for other purine transformations. The stability of the tert-butyl group at the N7 position is tested for classic model reactions, leading to the preparation of new 6,7-disubstituted purine derivatives, which is also interesting from the point of view of possible biological activity.
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Affiliation(s)
- Filip Nevrlka
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Adam Bědroň
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Michal Valenta
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Lenka Tranová
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Jakub Stýskala
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
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3
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Yasuda S, Svergja H, Olsen CE, Hoff BH. Promotion of Water as Solvent in Amination of 4-Chloropyrrolopyrimidines and Related Heterocycles under Acidic Conditions. ACS OMEGA 2024; 9:14142-14152. [PMID: 38559978 PMCID: PMC10976386 DOI: 10.1021/acsomega.3c09673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/22/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
A switch of reaction medium from organic solvents to water can improve the safety and lower the cost of production processes. Hydrochloric acid-promoted amination of fused pyrimidines has been studied using 4-chloro-7H-pyrrolo[2,3-d]pyrimidine and aniline as model compounds. Higher rate was observed in water than in four alcoholic solvents and DMF. An important aspect is that the amount of acid should be kept low to minimize the competing solvolysis. The substrate scope for the amination in water was evaluated by reacting 4-chloro-7H-pyrrolo[2,3-d]pyrimidine with 20 aniline derivatives with variance in steric and electronic properties. Preparative useful reactions were seen for 14 of the 20 derivatives. Unsuited nucleophiles are ortho-substituted anilines with a pKa below 1. Amination of the corresponding quinazoline, thienopyrimidine, and purine also proceeded well in water. Highly lipophilic and crystalline compounds are more efficiently aminated in 2-propanol. Aliphatic and benzylic amines react poorly under acidic conditions, but these aminations can be done in water without acid.
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Affiliation(s)
- Shuhei Yasuda
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Ho̷gskoleringen 5, NO-7491 Trondheim, Norway
| | | | - Cecilie Elisabeth Olsen
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Ho̷gskoleringen 5, NO-7491 Trondheim, Norway
| | - Bård Helge Hoff
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Ho̷gskoleringen 5, NO-7491 Trondheim, Norway
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4
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He R, Liu Y, Feng Y, Chen L, Huang Y, Xie F, Li Y. Access to Thienopyridine and Thienoquinoline Derivatives via Site-Selective C-H Bond Functionalization and Annulation. Org Lett 2022; 24:3167-3172. [PMID: 35467892 DOI: 10.1021/acs.orglett.2c00903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To develop of an effective synthetic methodology for biologically relevant thienopyridines, a concise and efficient protocol is described for the synthesis of a series of substituted thienopyridine and thienoquinoline derivatives with high selectivity using EtOCS2K as the sulfur source. The reaction proceeds via metal-free, site-selective C-H bond thiolation and cyclization of the alkynylpyridine and alkynylquinoline substrates.
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Affiliation(s)
- Runfa He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yang Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yingqi Feng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Feng Xie
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529090, China
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5
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Kolli AR, Semren TZ, Bovard D, Majeed S, van der Toorn M, Scheuner S, Guy PA, Kuczaj A, Mazurov A, Frentzel S, Calvino-Martin F, Ivanov NV, O'Mullane J, Peitsch MC, Hoeng J. Pulmonary Delivery of Aerosolized Chloroquine and Hydroxychloroquine to Treat COVID-19: In Vitro Experimentation to Human Dosing Predictions. AAPS J 2022; 24:33. [PMID: 35132508 PMCID: PMC8821864 DOI: 10.1208/s12248-021-00666-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/23/2021] [Indexed: 01/06/2023] Open
Abstract
In vitro screening for pharmacological activity of existing drugs showed chloroquine and hydroxychloroquine to be effective against severe acute respiratory syndrome coronavirus 2. Oral administration of these compounds to obtain desired pulmonary exposures resulted in dose-limiting systemic toxicity in humans. However, pulmonary drug delivery enables direct and rapid administration to obtain higher local tissue concentrations in target tissue. In this work, inhalable formulations for thermal aerosolization of chloroquine and hydroxychloroquine were developed, and their physicochemical properties were characterized. Thermal aerosolization of 40 mg/mL chloroquine and 100 mg/mL hydroxychloroquine formulations delivered respirable aerosol particle sizes with 0.15 and 0.33 mg per 55 mL puff, respectively. In vitro toxicity was evaluated by exposing primary human bronchial epithelial cells to aerosol generated from Vitrocell. An in vitro exposure to 7.24 μg of chloroquine or 7.99 μg hydroxychloroquine showed no significant changes in cilia beating, transepithelial electrical resistance, and cell viability. The pharmacokinetics of inhaled aerosols was predicted by developing a physiologically based pharmacokinetic model that included a detailed species-specific respiratory tract physiology and lysosomal trapping. Based on the model predictions, inhaling emitted doses comprising 1.5 mg of chloroquine or 3.3 mg hydroxychloroquine three times a day may yield therapeutically effective concentrations in the lung. Inhalation of higher doses further increased effective concentrations in the lung while maintaining lower systemic concentrations. Given the theoretically favorable risk/benefit ratio, the clinical significance for pulmonary delivery of aerosolized chloroquine and hydroxychloroquine to treat COVID-19 needs to be established in rigorous safety and efficacy studies. Graphical abstract.
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Affiliation(s)
- Aditya R Kolli
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Tanja Zivkovic Semren
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - David Bovard
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Shoaib Majeed
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Marco van der Toorn
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Sophie Scheuner
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Philippe A Guy
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Arkadiusz Kuczaj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Anatoly Mazurov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Stefan Frentzel
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Florian Calvino-Martin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - John O'Mullane
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
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6
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Nagar H, Ingle D, Munagala CK, Kesari AK, Aniya V. Thermodynamic properties of active pharmaceutical ingredients that are of interest in COVID-19. CHEMICAL DATA COLLECTIONS 2022. [PMCID: PMC8697427 DOI: 10.1016/j.cdc.2021.100820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The pure component properties are estimated for active pharmaceutical ingredients that are related or proposed for the treatment of severe acute respiratory syndrome-CoronaVirus-2. These include Baricitinib, Camostat, Chloroquine, Dexamethasone, Hydroxychloroquine, Fingolimod, Favipiravir, Thalidomide, and Umifenovir. The estimations are based on group contribution+ (GC) models that contain combined group contribution and atom connectivity index with uncertainties in the estimated property values. The thermodynamic properties that are reported include boiling point, critical temperature, critical pressure, critical volume, melting point, standard Gibb's energy of formation, standard enthalpy of formation, enthalpy of fusion, enthalpy of vaporization at 298 K, enthalpy of vaporization at boiling point, entropy of vaporization at boiling point, flash point, Hildebrand solubility parameter, octanol/water partition coefficient, acentric factor, and liquid molar volume at 298 K. The reported properties are not available in the literature and thereby is an incremental development for reliable process engineering.
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7
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TDP-43 Modulation by Tau-Tubulin Kinase 1 Inhibitors: A New Avenue for Future Amyotrophic Lateral Sclerosis Therapy. J Med Chem 2022; 65:1585-1607. [PMID: 34978799 DOI: 10.1021/acs.jmedchem.1c01942] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease without any effective treatment. Protein TDP-43 is a pathological hallmark of ALS in both sporadic and familiar patients. Post-translational modifications of TDP-43 promote its aggregation in the cytoplasm. Tau-Tubulin kinase (TTBK1) phosphorylates TDP-43 in cellular and animal models; thus, TTBK1 inhibitors emerge as a promising therapeutic strategy for ALS. The design, synthesis, biological evaluation, kinase-ligand complex structure determination, and molecular modeling studies confirmed novel pyrrolopyrimidine derivatives as valuable inhibitors for further development. Moreover, compound 29 revealed good brain penetration in vivo and was able to reduce TDP-43 phosphorylation not only in cell cultures but also in the spinal cord of transgenic TDP-43 mice. A shift to M2 anti-inflammatory microglia was also demonstrated in vivo. Both these activities led to motor neuron preservation in mice, proposing pyrrolopyrimidine 29 as a valuable lead compound for future ALS therapy.
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8
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Uçar S, Daştan A. Recent Advances in the Transition-Metal-Free Arylation of Heteroarenes. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1543-3743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractTransition-metal-free arylation reactions have attracted considerable attention for economic and environmental reasons over the past 40 years. In recent years, much effort has been made to develop efficient transition-metal-free approaches for the arylation of heteroarenes. Covering the literature from 2015 to early 2021, this review aims to provide a thorough overview of the synthetic and mechanistic aspects of these atom-economical and environmentally benign reactions.1 Introduction2 Arylation of Pre-functionalized Heteroarenes2.1 Arylation of Heteroaryl Halides2.2 Decarboxylative Arylation of Heteroarenes3 Direct C–H Arylation of Heteroarenes3.1 C(sp2)–H Arylation3.2 C(sp3)–H Arylation4 N-Arylation of Heteroarenes5 Summary and Outlook
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9
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Rhodium(III)-catalyzed [4 + 2] annulation of N-arylbenzamidines with 1,4,2-dioxazol-5-ones: Easy access to 4-aminoquinazolines via highly selective C H bond activation. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.02.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Neporozhneva OV, Studentzsov EP, Ramsh SM. Reactions of Adenine and Its N-Exo Substituted Analogues with Phenyl Glycidyl Ether. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363220120051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Uçar S, Daştan A. Transition Metal-Free Heteroarylation of Quinoxaline: Construction of Heteroaryl-Fused Phenazines by Oxidative Coupling. J Org Chem 2020; 85:15502-15513. [PMID: 33185428 DOI: 10.1021/acs.joc.0c02252] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A concise method for the construction of heteroaryl-fused phenazines was developed via PIFA-BF3·Et2O-mediated oxidative coupling of di-heteroarylated quinoxalines for the first time. Synthesis of mono- and di-heteroarylation of quinoxaline was performed effectively using only LiTMP reagent under transition metal-free conditions and without the use of halogen-containing starting compounds. In addition, nonsymmetrical di-heteroarylated quinoxalines were synthesized through reheteroarylation of mono-heteroarylated quinoxalines in the same way. Oxidation of the saturated compounds formed after heteroarylation was easily accomplished with iodine. The UV-vis absorption and fluorescence features of some compounds were examined.
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Affiliation(s)
- Sefa Uçar
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum 25240, Turkey
| | - Arif Daştan
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum 25240, Turkey
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12
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Xu HB, Zhu YY, Yang JH, Chai XY, Dong L. RhIII-Catalyzed one-pot cascade synthesis of quinazolines with N-alkoxyamide as an amidating reagent. Org Chem Front 2020. [DOI: 10.1039/d0qo00084a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Novel and efficient rhodium(iii)-catalyzed C–H bond activation and tandem annulation for the synthesis of structurally complex quinazolines have been successfully developed.
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Affiliation(s)
- Hui-Bei Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Yan-Ying Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Jia-Hui Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xin-Yue Chai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
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13
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Staderini M, Piquero M, Abengózar MÁ, Nachér-Vázquez M, Romanelli G, López-Alvarado P, Rivas L, Bolognesi ML, Menéndez JC. Structure-activity relationships and mechanistic studies of novel mitochondria-targeted, leishmanicidal derivatives of the 4-aminostyrylquinoline scaffold. Eur J Med Chem 2019; 171:38-53. [DOI: 10.1016/j.ejmech.2019.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/08/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
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14
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Yang Q, Yin Z, Zheng L, Yuan J, Wei S, Ding Q, Peng Y. Copper-catalyzed cross-dehydrogenative coupling between quinazoline-3-oxides and indoles. RSC Adv 2019; 9:5870-5877. [PMID: 35517267 PMCID: PMC9060877 DOI: 10.1039/c8ra09864f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/11/2019] [Indexed: 01/16/2023] Open
Abstract
A novel and simple protocol for the synthesis of 4-(indole-3-yl)quinazolines via cross-dehydrogenative coupling of quinazoline-3-oxides and indoles under an air atmosphere has been developed.
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Affiliation(s)
- Qin Yang
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Zhijian Yin
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Lifang Zheng
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Jianjun Yuan
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Song Wei
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Qiuping Ding
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
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15
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Sharhan O, Heidelberg T, Hashim NM, Salman AA, Ali HM, Jayash SN. Synthesis and biological study of acridine-based imidazolium salts. RSC Adv 2018; 8:38995-39004. [PMID: 35558311 PMCID: PMC9090615 DOI: 10.1039/c8ra08138g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 11/14/2018] [Indexed: 12/03/2022] Open
Abstract
A new series of acridine based imidazolium salts was synthesized and evaluated for in vitro cytotoxicity against human cancer cell lines by an MTT assay. The synthesis applied a coupling of imidazoles with 9-chloroacridines, which originated from an Ullmann condensation of a 2-chloro-benzoic acid with an aniline. The target compounds were obtained in high yields. The DPPH assay indicated considerable antioxidant activity for target compounds with simple and short alkyl chains on the imidazole, while increasing chain length and the introduction of an additional π-electron system in most cases reduced the activity. All compounds exhibited low biotoxicity against non-cancerous cell lines, whereas a few compounds showed promising anticancer activity. Unlike for the reference drugs Tamoxifen and Paclitaxel, the anticancer activity of acridine imidazolium ions is specific for only selected cancer types. Reasonable fluorescent behaviour of the products provide potential for visualization of the distribution of active drugs in tissue.
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Affiliation(s)
- Olla Sharhan
- Chemistry Department, Faculty of Science, University of Malaya (UM) 50603 Kuala Lumpur Malaysia
- Chemistry Department, Faculty of Education, Thamar University Yemen
| | - Thorsten Heidelberg
- Chemistry Department, Faculty of Science, University of Malaya (UM) 50603 Kuala Lumpur Malaysia
| | - Najiahah Mohd Hashim
- Department of Pharmacy, Faculty of Medicine, University of Malaya Malaysia
- Centre for Natural Products and Drug Discovery (CENAR), Faculty of Science, University of Malaya Malaysia
| | - Abbas Abdulameer Salman
- Chemistry Department, Faculty of Science, University of Malaya (UM) 50603 Kuala Lumpur Malaysia
- College of Pathological Analysis Technologies, Al-Bayan University Baghdad Iraq
| | - Hapipah Mohd Ali
- Chemistry Department, Faculty of Science, University of Malaya (UM) 50603 Kuala Lumpur Malaysia
| | - Soher Nagi Jayash
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya Malaysia
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Ibb University Yemen
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16
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Shiva Kumar K, Siddi Ramulu M, Rajesham B, Kumar NP, Voora V, Kancha RK. FeCl3 catalysed 7-membered ring formation in a single pot: a new route to indole-fused oxepines/azepines and their cytotoxic activity. Org Biomol Chem 2017; 15:4468-4476. [DOI: 10.1039/c7ob00715a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
FeCl3 catalysed construction of 7 membered ring, oxepine and azepine derivatives by the reaction of 2,3-dichloro N-heterocycles with 2-(1H-indol-2-yl)phenol/aniline. Several of these compounds were found anti-proliferative properties against cancer cell lines.
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Affiliation(s)
- K. Shiva Kumar
- Department of Chemistry
- Osmania University
- Hyderabad-500 007
- India
| | | | | | | | - Vani Voora
- Molecular Medicine and Therapeutics Laboratory
- CPMB
- Osmania University
- Hyderabad-500007
- India
| | - Rama Krishna Kancha
- Molecular Medicine and Therapeutics Laboratory
- CPMB
- Osmania University
- Hyderabad-500007
- India
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17
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Qian P, Deng Y, Mei H, Han J, Pan Y. Metal-free nitroxyl radical-mediated β-C(sp3)–H amination of saturated ketones with heteroaryl halides: multiple roles of TEMPO. Chem Commun (Camb) 2017; 53:2958-2961. [DOI: 10.1039/c7cc00145b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first metal-free nitroxyl-radical-mediated β-amination of saturated ketones by using heteroaryl halides as amide precursors has been developed.
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Affiliation(s)
- Ping Qian
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Yu Deng
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Yi Pan
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210093
- P. R. China
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18
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Sunke R, Nallapati SB, Kumar JS, Shiva Kumar K, Pal M. Use of AlCl3 in Friedel Crafts arylation type reactions and beyond: an overview on the development of unique methodologies leading to N-heteroarenes. Org Biomol Chem 2017; 15:4042-4057. [DOI: 10.1039/c7ob00468k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An overview on the development of unique methodologies that highlight the use of AlCl3 in reactions leading to new N-heteroarenes of biological significance is presented.
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Affiliation(s)
- Rajnikanth Sunke
- Dr Reddy's Institute of Life Sciences
- Hyderabad Central University
- Hyderabad-500 046
- India
| | - Suresh Babu Nallapati
- Dr Reddy's Institute of Life Sciences
- Hyderabad Central University
- Hyderabad-500 046
- India
| | - Jetta Sandeep Kumar
- Dr Reddy's Institute of Life Sciences
- Hyderabad Central University
- Hyderabad-500 046
- India
| | - K. Shiva Kumar
- Department of Chemistry
- Osmania University
- Hyderabad-500 007
- India
| | - Manojit Pal
- Dr Reddy's Institute of Life Sciences
- Hyderabad Central University
- Hyderabad-500 046
- India
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19
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Wang X, Jiao N. Rh- and Cu-Cocatalyzed Aerobic Oxidative Approach to Quinazolines via [4 + 2] C–H Annulation with Alkyl Azides. Org Lett 2016; 18:2150-3. [DOI: 10.1021/acs.orglett.6b00774] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University, Xue
Yuan Road 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University, Xue
Yuan Road 38, Beijing 100191, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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