1
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Håheim KS, Sydnes MO. Regiodivergent Synthesis and Biological Activities of Indoloquinoline Based Compounds. CHEM REC 2024; 24:e202300362. [PMID: 38319822 DOI: 10.1002/tcr.202300362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/15/2024] [Indexed: 02/08/2024]
Abstract
Cryptolepine, neocryptolepine, and isocryptolepine have remained popular synthetic targets ever since their isolation from the aqueous extracts of the West African climbing shrub Cryptolepis sanguinolenta. These natural alkaloids were found to contain significant antimalarial, antiproliferative and antimicrobial activities, making them ideal starting points for the development of novel drug candidates. As natural product synthesis is often plagued with step-heavy procedures and poor atom economy, the discovery of synthetic protocols addressing these concerns are sorely needed. In our laboratories, we have devoted our efforts into the development of regiodivergent synthesis whereby two of the indoloquinoline natural products, namely neocryptolepine and 11H-indolo[3,2-c]quinolines, could be assembled in only a few steps from a common and readily available starting material. Our synthetic endeavors to meet these goals include a cascade palladium-catalyzed Suzuki-Miyuara cross-coupling and intramolecular C-N bond formation and a photochemical nitrene insertion strategy. Furthermore, our methods also allowed for the construction of several diversely functionalized natural product derivatives which were subjected to biological evaluations.
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Affiliation(s)
- Katja S Håheim
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, NO.4036, Stavanger, Norway
| | - Magne O Sydnes
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, NO.4036, Stavanger, Norway
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2
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Zhou P, Wu S, Niu K, Song H, Liu Y, Zhang J, Wang Q. Intramolecular trapping of an iminium salt: rapid construction of quindoline derivatives. Chem Commun (Camb) 2024; 60:292-295. [PMID: 38059581 DOI: 10.1039/d3cc05143a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Construction of the pyridine ring is a practical and streamline way to construct a variety of quindoline derivatives. We have developed a novel method for synthesis of quindoline derivatives by means of intramolecular ring-closure reactions of 3-N-methylphenylindoles via an iminium salt intermediate. This practical method has the advantages of a short reaction time, operational simplicity, and nearly quantitative yields; and it can be used for the rapid synthesis of a variety of valuable quindoline derivatives.
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Affiliation(s)
- Pan Zhou
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Senhui Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Kaikai Niu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Jingjing Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
- College of Basic Science, Tianjin Agricultural University, Tianjin 300384, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
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3
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Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2196-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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4
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Sulaiman M, Jannat K, Nissapatorn V, Rahmatullah M, Paul AK, de Lourdes Pereira M, Rajagopal M, Suleiman M, Butler MS, Break MKB, Weber JF, Wilairatana P, Wiart C. Antibacterial and Antifungal Alkaloids from Asian Angiosperms: Distribution, Mechanisms of Action, Structure-Activity, and Clinical Potentials. Antibiotics (Basel) 2022; 11:antibiotics11091146. [PMID: 36139926 PMCID: PMC9495154 DOI: 10.3390/antibiotics11091146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/06/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of multidrug-resistant bacteria and fungi requires the development of antibiotics and antifungal agents. This review identified natural products isolated from Asian angiosperms with antibacterial and/or antifungal activities and analyzed their distribution, molecular weights, solubility, and modes of action. All data in this review were compiled from Google Scholar, PubMed, Science Direct, Web of Science, ChemSpider, PubChem, and a library search from 1979 to 2022. One hundred and forty-one antibacterial and/or antifungal alkaloids were identified during this period, mainly from basal angiosperms. The most active alkaloids are mainly planar, amphiphilic, with a molecular mass between 200 and 400 g/mol, and a polar surface area of about 50 Å2, and target DNA and/or topoisomerase as well as the cytoplasmic membrane. 8-Acetylnorchelerythrine, cryptolepine, 8-hydroxydihydrochelerythrine, 6-methoxydihydrosanguinarine, 2′-nortiliacorinine, pendulamine A and B, rhetsisine, sampangine, tiliacorine, tryptanthrin, tylophorinine, vallesamine, and viroallosecurinine yielded MIC ≤ 1 µg/mL and are candidates for the development of lead molecules.
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Affiliation(s)
- Mazdida Sulaiman
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Khoshnur Jannat
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Veeranoot Nissapatorn
- School of Allied Health Sciences and World Union for Herbal Drug Discovery (WUHeDD), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Mohammed Rahmatullah
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Alok K. Paul
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7001, Australia
| | - Maria de Lourdes Pereira
- CICECO-Aveiro Institute of Materials & Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mogana Rajagopal
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur 56000, Malaysia
| | - Monica Suleiman
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | | | - Mohammed Khaled Bin Break
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail 81411, Saudi Arabia
| | - Jean-Frédéric Weber
- UFR Sciences Pharmaceutiques, INRAE, Bordeaux INP, UR ŒNOLOGIE, EA 4577, USC 1366, ISVV, Université de Bordeaux, 210 Chemin de Leysotte, 33882 Villenave d’Ornon, France
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Christophe Wiart
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
- Correspondence:
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5
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Zhang Z, Liu Y, Wang S, Zhang C, Lin J. Efficient Synthesis of 7
H
‐Chromeno[3,2‐c]quinolin‐5‐ium Salts and Quinolin‐4‐ones through Acid‐Promoted Cascade Reaction of 3‐Formylchromones and Anilines. ChemistrySelect 2022. [DOI: 10.1002/slct.202104611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhong‐Wei Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
| | - Yue‐Ying Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
| | - Si‐Yu Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
| | - Cong‐Hai Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of Education Yunnan Provincial Center for Research & Development of Natural Products School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
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Amissah JN, Alorvor FE, Okorley BA, Asare CM, Osei-Safo D, Appiah-Opong R, Addae-Mensah I. Mineral Fertilization Influences the Growth, Cryptolepine Yield, and Bioefficacy of Cryptolepis sanguinolenta (Lindl.) Schlt. PLANTS (BASEL, SWITZERLAND) 2022; 11:122. [PMID: 35009125 PMCID: PMC8747327 DOI: 10.3390/plants11010122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/23/2022]
Abstract
Cryptolepis sanguinolenta (Lindl.) Schlt., the main source of cryptolepine alkaloid, is intensively exploited in the wild to treat malaria and Lyme disease. In this study, the influence of four inorganic fertilizers (supplying N, P, K, or NPK) and four growth periods (3, 6, 9, and 12 months after transplanting) on the herb's root biomass, cryptolepine content and yield, and biological activities were investigated in a pot and field trial. The results showed the application of N (in the form of Urea or NPK) increased root biomass yield, cryptolepine content, and cryptolepine yield compared to unfertilized plants. The 9-month-old plants recorded the maximum cryptolepine content (2.26 mg/100 mg dry root) and cryptolepine yield (304.08 mg/plant), indicating the perfect time to harvest the herb. Plant age at harvest had a more significant influence (50.6-55.7%) on cryptolepine production than fertilizer application (29.2-33.3%). Cryptolepine extracts from 9- to 12-month-old plants had the highest antiplasmodial activity (IC50 = 2.56-4.65 µg/mL) and drug selectivity index (2.15-3.91) against Plasmodium falciparum Dd2. These extracts were also cytotoxic to Jurkat leukaemia cell lines (CC50 < 62.56 µg/mL), indicating the possible use of cryptolepine for cancer management. Growing the herb in the field increased cryptolepine yield 2.5 times compared to growth in a pot, but this did not influence the antiplasmodial activity of the extract. Commercial cultivation of C. sanguinolenta for 9 months combined with N application could be a promising solution to the sustainable use of this threatened medicinal species.
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Affiliation(s)
| | - Forgive Enyonam Alorvor
- Crop Science Department, University of Ghana, Legon, Accra P.O. Box LG 44, GM, Ghana; (F.E.A.); (B.A.O.)
| | - Benjamin Azu Okorley
- Crop Science Department, University of Ghana, Legon, Accra P.O. Box LG 44, GM, Ghana; (F.E.A.); (B.A.O.)
| | - Chris Mpere Asare
- Council for Scientific and Industrial Research (CSIR), Plant Genetic Resources Research Institute (PGRRI), Bunso P.O. Box 7, EE, Ghana;
| | - Dorcas Osei-Safo
- Chemistry Department, University of Ghana, Legon, Accra P.O. Box LG 56, GM, Ghana; (D.O.-S.); (I.A.-M.)
| | - Regina Appiah-Opong
- Department of Clinical Pathology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Accra P.O. Box LG 581, GM, Ghana;
| | - Ivan Addae-Mensah
- Chemistry Department, University of Ghana, Legon, Accra P.O. Box LG 56, GM, Ghana; (D.O.-S.); (I.A.-M.)
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7
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Synthesis and Evaluation of the Tetracyclic Ring-System of Isocryptolepine and Regioiso-Mers for Antimalarial, Antiproliferative and Antimicrobial Activities. Molecules 2021; 26:molecules26113268. [PMID: 34070798 PMCID: PMC8198049 DOI: 10.3390/molecules26113268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 12/04/2022] Open
Abstract
A series of novel quinoline-based tetracyclic ring-systems were synthesized and evaluated in vitro for their antiplasmodial, antiproliferative and antimicrobial activities. The novel hydroiodide salts 10 and 21 showed the most promising antiplasmodial inhibition, with compound 10 displaying higher selectivity than the employed standards. The antiproliferative assay revealed novel pyridophenanthridine 4b to be significantly more active against human prostate cancer (IC50 = 24 nM) than Puromycin (IC50 = 270 nM) and Doxorubicin (IC50 = 830 nM), which are used for clinical treatment. Pyridocarbazoles 9 was also moderately effective against all the employed cancer cell lines and moreover showed excellent biofilm inhibition (9a: MBIC = 100 µM; 9b: MBIC = 100 µM).
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Chen YJ, Liu H, Zhang SY, Li H, Ma KY, Liu YQ, Yin XD, Zhou R, Yan YF, Wang RX, He YH, Chu QR, Tang C. Design, Synthesis, and Antifungal Evaluation of Cryptolepine Derivatives against Phytopathogenic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1259-1271. [PMID: 33496176 DOI: 10.1021/acs.jafc.0c06480] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Inspired by the widely antiphytopathogenic application of diversified derivatives from natural sources, cryptolepine and its derivatives were subsequently designed, synthesized, and evaluated for their antifungal activities against four agriculturally important fungi Rhizoctonia solani, Botrytis cinerea, Fusarium graminearum, and Sclerotinia sclerotiorum. The results obtained from in vitro assay indicated that compounds a1-a24 showed great fungicidal property against B. cinerea (EC50 < 4 μg/mL); especially, a3 presented significantly prominent inhibitory activity with an EC50 of 0.027 μg/mL. In the pursuit of further expanding the antifungal spectrum of cryptolepine, ring-opened compound f1 produced better activity with an EC50 of 3.632 μg/mL against R. solani and an EC50 of 5.599 μg/mL against F. graminearum. Furthermore, a3 was selected to be a candidate to investigate its preliminary antifungal mechanism to B. cinerea, revealing that not only spore germination was effectively inhibited and the normal physiological structure of mycelium was severely undermined but also detrimental reactive oxygen was obviously accumulated and the normal function of the nucleus was fairly disordered. Besides, in vivo curative experiment against B. cinerea found that the therapeutic action of a3 was comparable to that of the positive control azoxystrobin. These results suggested that compound a3 could be regarded as a novel and promising agent against B. cinerea for its valuable potency.
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Affiliation(s)
- Yong-Jia Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hua Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Hu Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Kun-Yuan Ma
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiao-Dan Yin
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Rui Zhou
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yin-Fang Yan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ren-Xuan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Hui He
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qing-Ru Chu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Chen Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
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Akkachairin B, Rodphon W, Reamtong O, Mungthin M, Tummatorn J, Thongsornkleeb C, Ruchirawat S. Synthesis of neocryptolepines and carbocycle-fused quinolines and evaluation of their anticancer and antiplasmodial activities. Bioorg Chem 2020; 98:103732. [DOI: 10.1016/j.bioorg.2020.103732] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/20/2020] [Accepted: 03/06/2020] [Indexed: 01/07/2023]
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10
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Nadein ON, Aksenov DА, Abakarov GM, Aksenov NА, Voskressensky LG, Aksenov AV. Methods of synthesis of natural indoloquinolines isolated from Cryptolepis sanguinolenta. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02557-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Synthesis and biological evaluation of indoloquinoline alkaloid cryptolepine and its bromo-derivative as dual cholinesterase inhibitors. Bioorg Chem 2019; 90:103062. [DOI: 10.1016/j.bioorg.2019.103062] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 06/04/2019] [Accepted: 06/09/2019] [Indexed: 12/20/2022]
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Khalid M, Ullah MA, Adeel M, Usman Khan M, Tahir MN, Braga AAC. Synthesis, crystal structure analysis, spectral IR, UV–Vis, NMR assessments, electronic and nonlinear optical properties of potent quinoline based derivatives: Interplay of experimental and DFT study. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.09.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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13
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Mudududdla R, Mohanakrishnan D, Bharate SS, Vishwakarma RA, Sahal D, Bharate SB. Orally Effective Aminoalkyl 10H-Indolo[3,2-b]quinoline-11-carboxamide Kills the Malaria Parasite by Inhibiting Host Hemoglobin Uptake. ChemMedChem 2018; 13:2581-2598. [PMID: 30358112 DOI: 10.1002/cmdc.201800579] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/10/2018] [Indexed: 12/26/2022]
Abstract
A series of indolo[3,2-b]quinoline-C11-carboxamides were synthesized by incorporation of aminoalkyl side chains into the core of indolo[3,2-b]quinoline-C11-carboxylic acid. Their in vitro antiplasmodial evaluation against Plasmodium falciparum led to the identification of a 2-(piperidin-1-yl)ethanamine-linked analogue {2-bromo-N-[2-(piperidin-1-yl)ethyl]-10H-indolo[3,2-b]quinoline-11-carboxamide (3 g)} (IC50 =1.3 μm) as the most promising compound exhibiting good selectivity indices against mammalian cell lines. The kill kinetics on erythrocytic-stage parasites revealed that 3 g caused complete killing of only the trophozoite-stage parasites. Mechanistic studies showed that 3 g targets the food vacuole of the parasite and inhibits hemoglobin uptake, β-hematin formation, and the basic endocytic processes of the parasite. Analogue 3 g was found to be orally bioavailable, and its curative antimalarial studies at 50 mg per kg p.o. against a Plasmodium berghei (ANKA)-infected mouse model revealed that mice treated with 3 g showed 27-35 % suppression of parasitemia with an increase in life span relative to untreated, control mice. Thus, the present work demonstrated a proof of concept for the oral efficacy of indolo[3,2-b]quinoline-C11-carboxamides.
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Affiliation(s)
- Ramesh Mudududdla
- CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
| | - Dinesh Mohanakrishnan
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Sonali S Bharate
- CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
| | - Ram A Vishwakarma
- CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
| | - Dinkar Sahal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Sandip B Bharate
- CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
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14
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Luque-Agudo V, Padrón JM, Román E, Serrano JA, Gil MV. Antiproliferative activity of new 2-glyco-3-nitro-1,2-dihydroquinolines and quinolines synthesized under solventless conditions promoted by neutral alumina. NEW J CHEM 2018. [DOI: 10.1039/c8nj03372b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes the syntheses of new 2-glyco-3-nitro-1,2-dihydroquinolines and 2-glyco-3-nitroquinolines by one-pot aza-Michael–Henry-dehydration reactions using green procedures, as well as the evaluation of their antiproliferative activity.
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Affiliation(s)
- V. Luque-Agudo
- IACYS-Unidad de Química Verde y Desarrollo Sostenible
- Departamento de Química Orgánica e Inorgánica
- Facultad de Ciencias
- Universidad de Extremadura
- 06006 Badajoz
| | - José M. Padrón
- BioLab Instituto Universitario de Bio-Orgánica Antonio González (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - E. Román
- IACYS-Unidad de Química Verde y Desarrollo Sostenible
- Departamento de Química Orgánica e Inorgánica
- Facultad de Ciencias
- Universidad de Extremadura
- 06006 Badajoz
| | - J. A. Serrano
- IACYS-Unidad de Química Verde y Desarrollo Sostenible
- Departamento de Química Orgánica e Inorgánica
- Facultad de Ciencias
- Universidad de Extremadura
- 06006 Badajoz
| | - M. V. Gil
- IACYS-Unidad de Química Verde y Desarrollo Sostenible
- Departamento de Química Orgánica e Inorgánica
- Facultad de Ciencias
- Universidad de Extremadura
- 06006 Badajoz
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15
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Phytochemical and Pharmacological Review of Cryptolepis sanguinolenta (Lindl.) Schlechter. Adv Pharmacol Sci 2017; 2017:3026370. [PMID: 29750083 PMCID: PMC5661077 DOI: 10.1155/2017/3026370] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/14/2017] [Accepted: 09/12/2017] [Indexed: 11/18/2022] Open
Abstract
Ethnopharmacological Relevance Cryptolepis sanguinolenta is a scrambling thin-stemmed shrub found in Africa. Traditionally in West Africa, it is employed in the treatment of malaria, diarrhea, and respiratory conditions. This review discusses the traditional importance as well as the phytochemical, ethnomedical, pharmacological, and toxicological importance of this plant. Materials and Methods Excerpta Medica Database, Google Scholar, Springer, and PubMed Central were the electronic databases used to search for and filter primary studies on Cryptolepis sanguinolenta. Results The detailed review of various studies conducted on C. sanguinolenta and some of its constituents gives an important body of proof of its potential therapeutic benefits and also of its use as a source of lead compounds with therapeutic potentials. Conclusion The review on C. sanguinolenta is important in identifying grey areas in the research on this medicinal plant and also provides comprehensive data thus far to continue research on this plant.
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Kukowska M. Amino acid or peptide conjugates of acridine/acridone and quinoline/quinolone-containing drugs. A critical examination of their clinical effectiveness within a twenty-year timeframe in antitumor chemotherapy and treatment of infectious diseases. Eur J Pharm Sci 2017; 109:587-615. [PMID: 28842352 DOI: 10.1016/j.ejps.2017.08.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 01/10/2023]
Abstract
Acridines/acridones, quinolines/quinolones (chromophores) and their derivatives constitute extremely important family of compounds in current medicine. Great significance of the compounds is connected with antimicrobial and antitumor activities. Combining these features together in one drug seems to be long-term benefit, especially in oncology therapy. The attractiveness of the chromophore drugs is still enhanced by elimination their toxicity and improvement not only selectivity, specificity but also bioavailability. The best results are reached by conjugation to natural peptides. This paper highlights significant advance in the study of amino acid or peptide chromophore conjugates that provide highly encouraging data for novel drug development. The structures and clinical significance of amino acid or peptide chromophore conjugates are widely discussed.
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Affiliation(s)
- Monika Kukowska
- Chair & Department of Chemical Technology of Drugs, Faculty of Pharmacy with Subfaculty of Laboratory Medicine, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland.
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17
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Kumru M, Altun A, Kocademir M, Küçük V, Bardakçı T, Şaşmaz İ. Combined experimental and quantum chemical studies on spectroscopic (FT-IR, FT-Raman, UV–Vis, and NMR) and structural characteristics of quinoline-5-carboxaldehyde. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.06.066] [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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18
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Zheng D, Liu T, Liu X, Fan X, Wu J. Route for the Generation of Trifluoromethyl-Substituted Pyrrplo[3,2-c]quinolines. J Org Chem 2016; 81:9428-9432. [DOI: 10.1021/acs.joc.6b01669] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danqing Zheng
- Gannan Medical University Collaborative Innovation
Center for Gannan Oil-tea Camellia Industrial Development, 1 Yixueyuan Road, Ganzhou, Jiangxi 341000, China
- Department
of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Tong Liu
- Department
of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xia Liu
- Gannan Medical University Collaborative Innovation
Center for Gannan Oil-tea Camellia Industrial Development, 1 Yixueyuan Road, Ganzhou, Jiangxi 341000, China
| | - Xiaona Fan
- Gannan Medical University Collaborative Innovation
Center for Gannan Oil-tea Camellia Industrial Development, 1 Yixueyuan Road, Ganzhou, Jiangxi 341000, China
| | - Jie Wu
- Department
of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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19
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Solubility of 3-{3,5-Bis(trifluoromethyl)phenyl}quinoline Using Micellar Solutions of Surfactants. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0347-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Kuş N, Sagdinc S, Fausto R. Infrared Spectrum and UV-Induced Photochemistry of Matrix-Isolated 5-Hydroxyquinoline. J Phys Chem A 2015; 119:6296-308. [PMID: 26024730 DOI: 10.1021/acs.jpca.5b03942] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structure, infrared spectrum, and photochemistry of 5-hydroxyquinoline (5HQ) were studied by matrix isolation infrared spectroscopy, complemented by theoretical calculations performed at the DFT(B3LYP)/6-311++G(d,p) level of approximation. According to the calculations, the trans conformer of 5HQ (with the OH group pointing to the opposite direction of the pyridine ring of the molecule) is more stable than the cis form (by ∼8.8 kJ mol(-1)). The main factors determining the relative stability of the two conformers were rationalized through natural bond orbital (NBO) and charge density analyses. The compound was trapped in solid nitrogen at 10 K, and its infrared spectra registered and interpreted, showing the sole presence in the matrix of the more stable trans conformer. Broadband in situ UV irradiations (λ ≥ 288 nm and λ ≥ 235 nm) allowed for the observation of different chemical transformations, which started by excitation to the S1 state of 5HQ, followed by homolytic cleavage of the O-H bond, and subsequent reattachment of the H atom to the 5HQ radical to form quinolin-5(6H)-one and quinolin-5(8H)-one. The first of these two quinolinones was found to convert to open-ring isomeric ketenes, especially when irradiation was performed at higher energy, whereas the second is rather stable under the used experimental conditions. As a whole, the observed photochemistry of matrix-isolated 5HQ closely matches those previously reported for phenol and thiophenol. A detailed mechanistic interpretation for the observed photochemical processes is here proposed, which received support from time-dependent DFT calculations.
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Affiliation(s)
- Nihal Kuş
- †CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.,‡Department of Physics, Anadolu University, 26470 Eskişehir, Turkey
| | - Seda Sagdinc
- †CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.,§Department of Physics, Kocaeli University, Kocaeli, Turkey
| | - Rui Fausto
- †CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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21
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Aroonkit P, Thongsornkleeb C, Tummatorn J, Krajangsri S, Mungthin M, Ruchirawat S. Synthesis of isocryptolepine analogues and their structure-activity relationship studies as antiplasmodial and antiproliferative agents. Eur J Med Chem 2015; 94:56-62. [PMID: 25747499 DOI: 10.1016/j.ejmech.2015.02.047] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 02/23/2015] [Accepted: 02/24/2015] [Indexed: 11/29/2022]
Abstract
Novel isocryptolepine analogues have been conveniently synthesized and evaluated for antimalarial and antiproliferative activities. We have found 3-fluoro-8-bromo-isocryptolepine (1n) to have the highest activities against chloroquine-resistant K1, chloroquine-sensitive 3D7, and chloroquine- and mefloquine-resistant SKF58 and SRIV35 strains. Several fluorine-substituted analogues (1b, 1n, and 1q) also showed excellent selectivities while maintaining good to excellent activities against all four Plasmodium falciparum strains. Additionally, antiproliferative properties of isocryptolepine derivatives against HepG2, HuCCA-1, MOLT-3 and A549 cancer cell lines are reported for the first time in this study. 2-Chloroisocryptolepine (1c) and benzo-fused-2-chloroisocryptolepine (1i) showed significant bioactivities whereas several novel fluorinated compounds and 2-chloro-8-bromoisocryptolepine (1f) displayed excellent selectivities.
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Affiliation(s)
- Pasuk Aroonkit
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand; Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
| | - Jumreang Tummatorn
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand; Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand.
| | - Suppachai Krajangsri
- Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchawithi Road, Bangkok 10400, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand; Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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22
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Liu G, Yi M, Liu L, Wang J, Wang J. An atom economical method for the direct synthesis of quinoline derivatives from substituted o-nitrotoluenes. Chem Commun (Camb) 2015; 51:2911-4. [DOI: 10.1039/c4cc09358e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-pot procedure for the preparation of substituted quinolines from substituted o-nitrotoluenes with electron-withdrawing groups and olefins (acrylic esters and acrylonitriles) using a cesium catalyst under mild reaction conditions is reported. The process involves a [2+4] cycloaddition mechanism.
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Affiliation(s)
- Guiyan Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin
- P. R. China
| | - Maocong Yi
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Lu Liu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Jingjing Wang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Jianhui Wang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- P. R. China
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23
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Medina Marrero R, Marrero-Ponce Y, Barigye SJ, Echeverría Díaz Y, Acevedo-Barrios R, Casañola-Martín GM, García Bernal M, Torrens F, Pérez-Giménez F. QuBiLs-MAS method in early drug discovery and rational drug identification of antifungal agents. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2015; 26:943-58. [PMID: 26567876 DOI: 10.1080/1062936x.2015.1104517] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The QuBiLs-MAS approach is used for the in silico modelling of the antifungal activity of organic molecules. To this effect, non-stochastic (NS) and simple-stochastic (SS) atom-based quadratic indices are used to codify chemical information for a comprehensive dataset of 2478 compounds having a great structural variability, with 1087 of them being antifungal agents, covering the broadest antifungal mechanisms of action known so far. The NS and SS index-based antifungal activity classification models obtained using linear discriminant analysis (LDA) yield correct classification percentages of 90.73% and 92.47%, respectively, for the training set. Additionally, these models are able to correctly classify 92.16% and 87.56% of 706 compounds in an external test set. A comparison of the statistical parameters of the QuBiLs-MAS LDA-based models with those for models reported in the literature reveals comparable to superior performance, although the latter were built over much smaller and less diverse datasets, representing fewer mechanisms of action. It may therefore be inferred that the QuBiLs-MAS method constitutes a valuable tool useful in the design and/or selection of new and broad spectrum agents against life-threatening fungal infections.
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Affiliation(s)
- R Medina Marrero
- a Computer-Aided Molecular 'Biosilico' Discovery and Bioinformatic Research International Network (CAMD-BIR-IN) , Cartagena de Indias , Bolivar , Colombia
- b Department of Microbiology , Chemical Bioactive Center, Central University of Las Villas , Villa Clara , Cuba
| | - Y Marrero-Ponce
- a Computer-Aided Molecular 'Biosilico' Discovery and Bioinformatic Research International Network (CAMD-BIR-IN) , Cartagena de Indias , Bolivar , Colombia
- c Grupo de Investigación en Estudios Químicos y Biológicos, Facultad de Ciencias Básicas , Universidad Tecnológica de Bolívar , Cartagena de Indias , Bolívar , Colombia
- d Unidad de Investigación de Diseño de Fármacos y Conectividad Molecular, Departamento de Química Física, Facultad de Farmacia , Universitat de València , Valencia , Spain
- h Grupo de Investigación Microbiología y Ambiente (GIMA) . Programa de Bacteriología, Facultad Ciencias de la Salud, Universidad de San Buenaventura , Calle Real de Ternera, 130010, Cartagena (Bolivar) , Colombia
| | - S J Barigye
- a Computer-Aided Molecular 'Biosilico' Discovery and Bioinformatic Research International Network (CAMD-BIR-IN) , Cartagena de Indias , Bolivar , Colombia
- e Departamento de Química , Universidade Federal de Lavras , Lavras , MG , Brazil
| | - Y Echeverría Díaz
- a Computer-Aided Molecular 'Biosilico' Discovery and Bioinformatic Research International Network (CAMD-BIR-IN) , Cartagena de Indias , Bolivar , Colombia
| | - R Acevedo-Barrios
- c Grupo de Investigación en Estudios Químicos y Biológicos, Facultad de Ciencias Básicas , Universidad Tecnológica de Bolívar , Cartagena de Indias , Bolívar , Colombia
| | - G M Casañola-Martín
- a Computer-Aided Molecular 'Biosilico' Discovery and Bioinformatic Research International Network (CAMD-BIR-IN) , Cartagena de Indias , Bolivar , Colombia
- d Unidad de Investigación de Diseño de Fármacos y Conectividad Molecular, Departamento de Química Física, Facultad de Farmacia , Universitat de València , Valencia , Spain
- f Facultad de Ingeniería Ambiental , Universidad Estatal Amazónica , Puyo , Ecuador
| | - M García Bernal
- b Department of Microbiology , Chemical Bioactive Center, Central University of Las Villas , Villa Clara , Cuba
| | - F Torrens
- g Institut Universitari de Ciència Molecular, Universitat de València , Valencia , Spain
| | - F Pérez-Giménez
- d Unidad de Investigación de Diseño de Fármacos y Conectividad Molecular, Departamento de Química Física, Facultad de Farmacia , Universitat de València , Valencia , Spain
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24
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Pagar VV, Liu RS. Gold-catalyzed α-furanylations of quinoline N-oxides with alkenyldiazo carbonyl species. Org Biomol Chem 2015; 13:6166-9. [DOI: 10.1039/c5ob00696a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalyzed α-furanylations of 8-alkylquinoline N-oxides have been achieved using various alkenyldiazo carbonyl species as nucleophiles.
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Affiliation(s)
| | - Rai-Shung Liu
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
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25
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Moustafa AH, Said SA, Haikal AEFZ, Abu-El-Halawa R, Abd-El Kader RT. Synthesis and biological activity of some nucleoside analogs of hydroquinoline-3-carbonitrile. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2014; 33:111-28. [PMID: 24689844 DOI: 10.1080/15257770.2014.880473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Hydroquinoline acyclonucleosides 2, 4, 6a,b, 8a,b, 9a,b, and their corresponding N-alkyl derivatives (10-12) were obtained by the reaction of 1a,b with acetoxybutylbromide, (2-acetoxyethoxy)methyl bromide, 3-chloropropanol, 1,3-dichloro-2-propanol, epichlorohydrin, propargyl/allyl bromides in the presence of K(2)CO(3) in dry dimethylformamide (DMF). In a similar manner, reaction of 1a,b with glycosyl/galactosyl and lactosyl bromide afforded the corresponding N-nucloside derivatives 13a,b, 15a,b, and 17, respectively. Deacetylation of the N-nucleosides derivatives in the presence of Et(3)N/MeOH and few drops of water gave the deprotected derivatives 3, 5, 7a,b, 14a,b, 16a,b, and 18 in good yields, respectively. All the newly synthesized compounds are elucidated by infrared, (1)H, (13)C NMR and elemental analyses. Some of these compounds were screened for antimicrobial activities.
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Affiliation(s)
- Ahmed H Moustafa
- a Department of Chemistry, Faculty of Science , Zagazig University , Zagazig , Egypt
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26
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Kuş N, Henriques MS, Paixão JA, Lapinski L, Fausto R. Crystal Structure, Matrix-Isolation FTIR, and UV-Induced Conformational Isomerization of 3-Quinolinecarboxaldehyde. J Phys Chem A 2014; 118:8708-16. [DOI: 10.1021/jp506354t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nihal Kuş
- CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Department
of Physics, Anadolu University, 26470 Eskişehir, Turkey
| | | | - José António Paixão
- CEMDRX, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
| | - Leszek Lapinski
- CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland
| | - Rui Fausto
- CQC, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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27
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Tabassum S, Suresha Kumara T, Jasinski JP, Millikan SP, Yathirajan H, Sujan Ganapathy P, Sowmya H, More SS, Nagendrappa G, Kaur M, Jose G. Synthesis, crystal structure, ABTS radical-scavenging activity, antimicrobial and docking studies of some novel quinoline derivatives. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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28
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Ghouse SM, Kumar YS, Jin JS, Kim JP, Bae JS, Chung EH, Kim DY, Jang EK, Nawaz Khan FR, Jeong ED. Green chemical approach: microwave assisted, titanium dioxide nanoparticles catalyzed, convenient and efficient C–C bond formation in the synthesis of highly functionalized quinolines and quinolinones. RSC Adv 2014. [DOI: 10.1039/c4ra06772j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
TiO2 nanoparticles was effectively applied in the microwave assisted synthesis of quinolines and quinolones.
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Affiliation(s)
- Shaik Mohammed Ghouse
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Yadavalli Suneel Kumar
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Jong Sung Jin
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Jong-Pil Kim
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Jong Seong Bae
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Eun Hyuk Chung
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Do Yeon Kim
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Eun Kyung Jang
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Fazlur-Rahman Nawaz Khan
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Euh Duck Jeong
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
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29
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30
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Kumar YS, Dasaradhan C, Prabakaran K, Nawaz Khan FR, Jeong ED, Chung EH, Hyun Gyu Kim HGK. A convenient and efficient C–OH bond activation, PdCl2(PPh3)2catalyzed, C–C bond formation of tautomerizable quinolinones with the aid of BOP reagent and boronic acids. RSC Adv 2014. [DOI: 10.1039/c4ra05161k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
C–C bond formation of tautomerizable quinolinones. C–OH bond activation using BOP reagent and boronic acids.
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Affiliation(s)
- Yadavalli Suneel Kumar
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - C. Dasaradhan
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Kamalakannan Prabakaran
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Fazlur-Rahman Nawaz Khan
- Organic and Medicinal Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT-University
- Vellore 632 014, India
| | - Euh Duck Jeong
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
| | - Eun Hyuk Chung
- Korea Basic Science Institute
- Busan Center
- Busan 618 230, South Korea
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31
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Bolden S, Boateng CA, Zhu XY, Etukala JR, Eyunni SK, Jacob MR, Khan SI, Ablordeppey SY. CoMFA studies and in vitro evaluation of some 3-substituted benzylthio quinolinium salts as anticryptococcal agents. Bioorg Med Chem 2013; 21:7194-201. [PMID: 24080102 DOI: 10.1016/j.bmc.2013.08.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/14/2013] [Accepted: 08/23/2013] [Indexed: 10/26/2022]
Abstract
The 3-dimensional quantitative structure-activity relationship (3D-QSAR) molecular modeling technique or comparative molecular field analysis (CoMFA) has been used to design analogs of the natural product cryptolepine (1). Twenty-three compounds with their in vitro biological activities (IC50 values) against Crytococcus neoformans were used to generate the training set database of compounds for the CoMFA studies. The cross-validated q(2), noncross-validated r(2), and partial least squares (PLS) analysis results were used to predict the biological activity of 11 newly designed test set compounds. The best CoMFA model produced a q(2) of 0.815 and an r(2) of 0.976 indicating high statistical significance as a predictive model. The steric and electrostatic contributions from the contour map were interpreted from the color-coded contour plots generated from the PLS model and the active structural components for potency against C. neoformans were determined and validated in the test set compounds. The 3-substituted benzylthio quinolinium salts (4) that make up the test set were synthesized and evaluated based on the predicted activity from the CoMFA model and the results produced a good correlation between the predicted and experimental activity (R=0.82). Thus, CoMFA has served as an effective tool to aid the design of new analogs and in this case, it has aided the identification of compounds equipotent with amphotericin B, the gold standard in antifungal drug design.
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Affiliation(s)
- Sidney Bolden
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
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32
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Bastos DDS, Silva AC, Albert AL, Barros WM, Slana GB, Cardoso JN, Lopes RS, Lopes CC. An efficient and concise total synthesis of the antimalarial alkaloid quindoline. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Deepa HR, Thipperudrappa J, Suresh Kumar HM. Effect of solvents on the spectroscopic properties of LD-489 & LD-473: estimation of ground and excited state dipole moments by solvatochromic shift method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 108:288-294. [PMID: 23501941 DOI: 10.1016/j.saa.2013.01.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 01/04/2013] [Accepted: 01/23/2013] [Indexed: 06/01/2023]
Abstract
The absorption and fluorescence spectra of 6,7,8,9-tetrahydro-6,8,9-trimethyl-4-(trifluoro methyl)-2H-pyrano[2,3-b][1,8]naphthyridin-2-one (LD-489) and 1,2,3,8-tetrahydro-1,2,3,3,8-pentamethyl-5-(trifluoromethyl)-7H-pyrrolo[3,2-g]quinolin-7-one (LD-473) have been recorded at room temperature in different solvents and 1,4-dioxane-acetonitrile solvent mixtures. The UV-Visible absorption spectra are less sensitive to solvent polarity than the corresponding fluorescence spectra in both the dyes which show pronounced solvatochromic effect. The effects of solvents upon the spectral properties are analyzed using Lippert-Mataga polarity function, Richardts microscopic solvent polarity parameter and Catalán's multiple linear regression approach. Both general solute-solvent interactions and specific interactions are operative in these systems. The solvatochromic correlations are used to estimate excited state dipole moments using experimentally determined ground state dipole moments. The excited state dipole moment for both the dyes are found to be larger than their corresponding ground state dipole moment and is interpreted based on their resonance structures.
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Affiliation(s)
- H R Deepa
- Department of Physics, B.N.M. Institute of Technology, Bangalore 560 070, India
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34
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Volvoikar PS, Parvatkar PT, Tilve SG. Tandem Reductive Cyclization-Dehydration Approach for the Synthesis of Cryptolepine Hydroiodide and Its Analogues. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201586] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Stell JGP, Wheelhouse RT, Wright CW. Metabolism of cryptolepine and 2-fluorocryptolepine by aldehyde oxidase. J Pharm Pharmacol 2011; 64:237-43. [DOI: 10.1111/j.2042-7158.2011.01408.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
To investigate the metabolism of cryptolepine and some cryptolepine analogues by aldehyde oxidase, and to assess the implications of the results on the potential of cryptolepine analogues as antimalarial agents.
Methods
The products resulting from the oxidation of cryptolepine and 2-fluorocryptolepine by a rabbit liver preparation of aldehyde oxidase were isolated and identified using chromatographic and spectroscopic techniques. The antiplasmodial activity of cryptolepine-11-one was assessed against Plasmodium falciparum using the parasite lactate dehydrogenase assay.
Key findings
Cryptolepine was oxidized by aldehyde oxidase give cryptolepine-11-one. Although 2-fluorocryptolepine was found to have less affinity for the enzyme than cryptolepine, it was a better substrate for aldehyde oxidase than the parent compound. In contrast, quindoline, the 11-chloro- , 2,7-dibromo- and 2-methoxy analogues of cryptolepine were not readily oxidized. Cryptolepine-11-one was found to be inactive against P. falciparum in vitro raising the possibility that the effectiveness of cryptolepine as an antimalarial, may be compromised by metabolism to an inactive metabolite by liver aldehyde oxidase.
Conclusions
Cryptolepine and 2-fluorocryptolepine are substrates for aldehyde oxidase. This may have implications for the design and development of cryptolepine analogues as antimalarial agents.
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Affiliation(s)
| | | | - Colin W Wright
- Bradford School of Pharmacy, University of Bradford, Bradford, UK
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Whittell LR, Batty KT, Wong RPM, Bolitho EM, Fox SA, Davis TME, Murray PE. Synthesis and antimalarial evaluation of novel isocryptolepine derivatives. Bioorg Med Chem 2011; 19:7519-25. [PMID: 22055713 DOI: 10.1016/j.bmc.2011.10.037] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/05/2011] [Accepted: 10/13/2011] [Indexed: 11/26/2022]
Abstract
A series of mono- and di-substituted analogues of isocryptolepine have been synthesized and evaluated for in vitro antimalarial activity against chloroquine sensitive (3D7) and resistant (W2mef) Plasmodium falciparum and for cytotoxicity (3T3 cells). Di-halogenated compounds were the most potent derivatives and 8-bromo-2-chloroisocryptolepine displayed the highest selectivity index (106; the ratio of cytotoxicity (IC(50)=9005 nM) to antimalarial activity (IC(50)=85 nM)). Our evaluation of novel isocryptolepine compounds has demonstrated that di-halogenated derivatives are promising antimalarial lead compounds.
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Affiliation(s)
- Louise R Whittell
- School of Pharmacy, Curtin University, Bentley, GPO Box U1987, Perth, Western Australia 6845, Australia
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Mazu TK, Etukala JR, Jacob MR, Khan SI, Walker LA, Ablordeppey SY. δ-Carbolines and their ring-opened analogs: synthesis and evaluation against fungal and bacterial opportunistic pathogens. Eur J Med Chem 2011; 46:2378-85. [PMID: 21459492 DOI: 10.1016/j.ejmech.2011.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 03/06/2011] [Accepted: 03/10/2011] [Indexed: 12/31/2022]
Abstract
Previous studies have indicated that the δ-carboline (2) ring system derived from the natural product cryptolepine (1) may represent a pharmacophore for anti-infective activity. This paper describes the design and synthesis of a small library of substituted δ-carbolines and the evaluation of the anti-fungal and anti-bacterial activities. An evaluation of the anti-bacterial activity of a previously reported library of ring-opened analogs was also conducted to provide an opportunity to test the hypothesis that both group of compounds may have the same biological target. Results indicate that against a selected group of fungal pathogens, substituted δ-carbolinium analogs displayed higher potency and several fold lower cytotoxicity than cryptolepine the parent natural product. Both the δ-carbolinium compounds and their ring-opened analogs, exhibited equally high anti-bacterial activity against the selected pathogens and especially against the gram positive bacteria evaluated.
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Affiliation(s)
- Tryphon K Mazu
- Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, USA
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Boateng CA, Zhu XY, Jacob MR, Khan SI, Walker LA, Ablordeppey SY. Optimization of 3-(phenylthio)quinolinium compounds against opportunistic fungal pathogens. Eur J Med Chem 2011; 46:1789-97. [PMID: 21402432 DOI: 10.1016/j.ejmech.2011.02.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2010] [Revised: 02/14/2011] [Accepted: 02/15/2011] [Indexed: 12/27/2022]
Abstract
Ring-opened benzothieno[3,2-b]quinolinium salts (3) were designed and synthesized with substitution on the thiophene moiety. In vitro screenings were carried out against fungal pathogens including Cryptococcus neoformans, Candida albicans, Candida glabrata, Candida krusei and Aspergillus fumigatus. In all, by replacing the N-methyl group (2) with N-ω-phenylpentyl or ω-cyclohexylpentyl group to form substituted 3-(phenylthio)quinolinium compounds produced remarkable potencies, as high as 300-fold (cf, cryptolepine (1)=250 μg/mL vs 11p=0.8 μg/mL for C. albicans) over the starting tetracyclic parent. In addition, all the N-ω-cyclohexylpentyl analogs produced superior activity against all the microorganisms tested than the N-ω-phenylpentyl substituted compounds. The potential of these compounds to induce toxicity in Vero cells was also investigated and the majority of them showed lower or no cytotoxicity at 10 μg/mL than amphotericin B, the gold standard in antifungal drug development. For instance, the trifluoromethyl substituted analogs (11n-p) have selectivity indices over 2-fold better than those of amphotericin B in C. neoformans. Overall, this ring-opened scafford of benzothienoquinolines, with substitution on the thiophenyl moiety, serves as a new lead for further development.
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Affiliation(s)
- Comfort A Boateng
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
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Ghosh P, Jaffer SS, Purkayastha P. Effect of Cyclodextrins on the Photophysics of Three Indoloquinoline Derivatives: An Intriguing Fluorometric Study. J Phys Chem B 2011; 115:2046-54. [DOI: 10.1021/jp1109288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Prasun Ghosh
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741252, WB, India
| | - Syed S. Jaffer
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741252, WB, India
| | - Pradipta Purkayastha
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur 741252, WB, India
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Boateng CA, Eyunni SVK, Zhu XY, Etukala JR, Bricker BA, Ashfaq MK, Jacob MR, Khan SI, Walker LA, Ablordeppey SY. Benzothieno[3,2-b]quinolinium and 3-(phenylthio)quinolinium compounds: Synthesis and evaluation against opportunistic fungal pathogens. Bioorg Med Chem 2010; 19:458-70. [PMID: 21134759 DOI: 10.1016/j.bmc.2010.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 10/25/2010] [Accepted: 11/03/2010] [Indexed: 10/18/2022]
Abstract
Substitution around 5-methyl benzothieno[3,2-b]quinolinium (2) ring system was explored in order to identify positions of substitution that could improve its antifungal profile. The 3-methoxy (10b) was active against C. albicans, C. neoformans, and A. fumigatus and the 4-chloro (10f) analog showed moderate increases in anti-cryptococcal and anti-aspergillus activities. The effectiveness of 10b and 10f were validated in murine models of candidiasis and cryptococcosis, respectively. The efficacy of 10f in reducing brain cryptococcal infection and its observation in the brain of mice injected with this quaternary compound confirm the capacity of these compounds to cross the blood-brain barrier of mice. Overall, several of the chloro and methoxy substituted compounds showed significant improvements in activity against A. fumigatus, the fungal pathogen prevalent in patients receiving organ transplant. Opening the benzothiophene ring of 2 to form 1-(5-cyclohexylpentyl)-3-(phenylthio)quinolinium compound (3) resulted in the identification of several novel compounds with over 50-fold increases in potency (cf. 2) while retaining low cytotoxicities. Thus, compound 3 constitutes a new scaffold for development of drugs against opportunistic infections.
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Affiliation(s)
- Comfort A Boateng
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL 32307, USA
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Mazu TK, Etukala JR, Zhu XY, Jacob MR, Khan SI, Walker LA, Ablordeppey SY. Identification of 3-phenylaminoquinolinium and 3-phenylaminopyridinium salts as new agents against opportunistic fungal pathogens. Bioorg Med Chem 2010; 19:524-33. [PMID: 21130660 DOI: 10.1016/j.bmc.2010.10.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 10/22/2010] [Accepted: 10/31/2010] [Indexed: 11/18/2022]
Abstract
Previous studies on the indoloquinoline alkaloid, cryptolepine (2), revealed that it has antii-nfective properties among other activities. Using Structure-activity relationship (SAR) techniques, several ring-opened analogs of cryptolepine (3-phenylaminopyridinium and 3-phenylaminoquinolinium derivatives) were designed to improve the potency and lower the cytotoxicity shown by several of the precursor agents. Results indicate that these ring-opened analogs constitute new anti-infective agents with over a 100-fold potency and several fold lower cytotoxicity than cryptolepine from which they are derived.
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Affiliation(s)
- Tryphon K Mazu
- Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, United States
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Gao W, Cheng X, Li Y. Synthesis of Quinoline-Bearing Ferrocene Derivatives via Friedländer Reaction of Acetyl- and 1,1’-Diacetylferrocenes with o-Amino Aryl Aldehydes. HETEROCYCLES 2010. [DOI: 10.3987/com-10-11980] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wang Y, Peng C, Liu L, Zhao J, Su L, Zhu Q. Sulfuric acid promoted condensation cyclization of 2-(2-(trimethylsilyl) ethynyl)anilines with arylaldehydes in alcoholic solvents: an efficient one-pot synthesis of 4-alkoxy-2-arylquinolines. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.206] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Meléndez Gómez CM, Kouznetsov VV, Sortino MA, Alvarez SL, Zacchino SA. In vitro antifungal activity of polyfunctionalized 2-(hetero)arylquinolines prepared through imino Diels-Alder reactions. Bioorg Med Chem 2008; 16:7908-20. [PMID: 18752959 DOI: 10.1016/j.bmc.2008.07.079] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 07/23/2008] [Accepted: 07/25/2008] [Indexed: 11/29/2022]
Abstract
Diverse polyfunctionalized quinolines, easily prepared using Lewis acid-catalyzed imino Diels-Alder reactions between corresponding aldimines, were tested for antifungal properties against standardized as well as clinical isolates of clinically important fungi. Among them, 4-pyridyl derivatives displayed the best activities mainly against dermatophytes. The activity appears not to be related neither to the lipophilicity nor to the basicity of compounds.
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Affiliation(s)
- Carlos M Meléndez Gómez
- Laboratorio de Química Orgánica y Biomolecular, Escuela de Química, Universidad Industrial de Santander, A.A. 678, Bucaramanga, Colombia
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Kumar EVS, Etukala JR, Ablordeppey SY. Indolo[3,2-b]quinolines: synthesis, biological evaluation and structure activity-relationships. Mini Rev Med Chem 2008; 8:538-54. [PMID: 18537709 PMCID: PMC3777419 DOI: 10.2174/138955708784534418] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The tetracyclic indolo[3,2-b]quinoline ring system constitutes an important structural moiety in natural products exhibiting numerous biological activities. In particular, indolo [3, 2-b]quinoline, commonly known as linear quindoline is of particular interest, because of its rigid structure and scope of derivatization. Although the core linear quindoline skeleton shows little or no activity in several biological systems, introduction of a methyl group on the N-5 atom leading to cryptolepine induces remarkable activity against a broad spectrum of biological targets. A number of analogs of quindoline and cryptolepine have been synthesized, incorporating various functional groups on the core quindoline skeleton leading to improved biological activities. In this review, we describe various synthetic methodologies leading to the quindoline scaffold, the biological activities and the structure activity relationships (SAR) of quindoline derivatives toward different disease states to give a better picture of the importance of this moiety in medicinal chemistry.
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Affiliation(s)
- Eyunni V.K. Suresh Kumar
- Division of Basic Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL. 32309, USA
| | - Jagan R. Etukala
- Division of Basic Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL. 32309, USA
| | - Seth Y. Ablordeppey
- Division of Basic Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL. 32309, USA
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Lavrado J, Paulo A, Gut J, Rosenthal PJ, Moreira R. Cryptolepine analogues containing basic aminoalkyl side-chains at C-11: Synthesis, antiplasmodial activity, and cytotoxicity. Bioorg Med Chem Lett 2008; 18:1378-81. [DOI: 10.1016/j.bmcl.2008.01.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Revised: 01/03/2008] [Accepted: 01/03/2008] [Indexed: 10/22/2022]
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47
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Zhu XY, Mardenborough LG, Li S, Khan A, Zhang W, Fan P, Jacob M, Khan S, Walker L, Ablordeppey SY. Synthesis and evaluation of isosteres of N-methyl indolo[3,2-b]-quinoline (cryptolepine) as new antiinfective agents. Bioorg Med Chem 2006; 15:686-95. [PMID: 17134906 PMCID: PMC1885469 DOI: 10.1016/j.bmc.2006.10.062] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2006] [Revised: 10/26/2006] [Accepted: 10/28/2006] [Indexed: 11/23/2022]
Abstract
Isosteres of cryptolepine (1) were synthesized and evaluated for their antiinfective activities. Overall, the sulfur isostere, 5-methyl benzothieno[3,2-b]quinolinium salt (5b), was equipotent to 1 and has shown no cytotoxicity at 23.8 microg/mL. Compound 5b was also found to have a broad spectrum of activity. Both the carbon and oxygen isosteres were less potent than cryptolepine. A limited library of 2-substituted analogs of 5b has been synthesized and evaluated in antifungal screens but did not show increase in potency compared to the unsubstituted 5b. Similarly, evaluation of tricyclic benzothieno[3,2-b]pyridines while showing promise in individual screens did not produce an overall increase in potency. Overall, the evaluation of the activities of 5b compared with standard antifungal/anti-protozoal agents suggests that the benzothienoquinoline scaffold could serve as a lead for optimization.
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Affiliation(s)
- Xue Y Zhu
- Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, USA
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Mardenborough LG, Zhu XY, Fan P, Jacob MR, Khan SI, Walker LA, Ablordeppey SY. Identification of bis-quindolines as new antiinfective agents. Bioorg Med Chem 2005; 13:3955-63. [PMID: 15911310 DOI: 10.1016/j.bmc.2005.04.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2005] [Revised: 04/05/2005] [Accepted: 04/05/2005] [Indexed: 11/24/2022]
Abstract
Several N-substituted quindolines were made to further evaluate the role of N-alkylation on the activity of indoloquinolines as antifungal agents. While N-5 substitution is required for these activities, N-10 alkylation alone leads to inactive products but is tolerated in the presence of N-5 alkyl groups. It was also discovered that bis-quindolines appear to have a more expanded antimicrobial spectrum and lower cytotoxicity than their monomeric counterparts.
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Affiliation(s)
- Leroy G Mardenborough
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
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