101
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Outlaw VK, d’Andrea FB, Townsend CA. One-pot synthesis of highly substituted N-fused heteroaromatic bicycles from azole aldehydes. Org Lett 2015; 17:1822-5. [PMID: 25815402 PMCID: PMC4500639 DOI: 10.1021/ol5036936] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient route to substituted N-fused aromatic heterocycles, including indolizines, imidazo[1,2-a]pyridines, and imidazo[1,5-a]pyridines from azole aldehydes, is reported. Wittig olefination of the aldehydes with fumaronitrile and triethylphosphine affords predominantly E-alkenes that undergo rapid cyclization upon treatment with a mild base. Substituent control of the 1-, 2-, and 3-positions of the resulting heteroaromatic bicycles is shown. Alternatively, the isolable E-alkene undergoes selective alkylation with electrophiles, followed by in situ annulation to indolizines additionally substituted at the 6-position.
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Affiliation(s)
- Victor K. Outlaw
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Felipe B. d’Andrea
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Craig A. Townsend
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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102
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Ledovskaya MS, Molchanov AP, Boitsov VM, Kostikov RR, Stepakov AV. An efficient synthesis of substituted isoxazolopyrroloisoquinolines via diastereoselective N-acyliminium ion cyclization. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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103
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Design and synthesis of 5-chloro-2-hydroxy-3-triazolylbenzoic acids as HIV integrase inhibitors. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1325-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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104
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Anticancer properties of lamellarins. Mar Drugs 2015; 13:1105-23. [PMID: 25706633 PMCID: PMC4377975 DOI: 10.3390/md13031105] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/24/2014] [Accepted: 02/13/2015] [Indexed: 12/12/2022] Open
Abstract
In 1985 the first lamellarins were isolated from a small oceanic sea snail. Today, more than 50 lamellarins have been inventoried and numerous derivatives synthesized and tested as antiviral or anticancer agents. The lead compound in the family is lamellarin D, characterized as a potent inhibitor of both nuclear and mitochondrial topoisomerase I but also capable of directly interfering with mitochondria to trigger cancer cell death. The pharmacology and chemistry of lamellarins are discussed here and the mechanistic portrait of lamellarin D is detailed. Lamellarins frequently serve as a starting point in the design of anticancer compounds. Extensive efforts have been devoted to create novel structures as well as to improve synthetic methods, leading to lamellarins and related pyrrole-derived marine alkaloids.
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105
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Karthikeyan I, Arunprasath D, Sekar G. An efficient synthesis of pyrido[1,2-a]indoles through aza-Nazarov type cyclization. Chem Commun (Camb) 2015; 51:1701-4. [DOI: 10.1039/c4cc08783f] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal free Brønsted acid mediated synthesis of pyrido[1,2-a]indole scaffolds has been developed through aza-Nazarov type cyclization of readily available diaryl(2-pyridyl)methanol using formic acid for the synthesis of biologically and medicinally important pyrido[1,2-a]indole, indolo[1,2-a]quinoline and pyrimido[1,2-a]indole derivatives.
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Affiliation(s)
- Iyyanar Karthikeyan
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
| | | | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
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106
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Synthesis of pyrrolocoumarins via Pd-catalyzed domino C–N coupling/hydroamination reactions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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107
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Iwao M, Fukuda T, Sato D. A Synthesis of Lamellarins via Regioselective Assembly of 1,2,3-Differentially Substituted 5,6-Dihydropyrrolo[2,1-a]Isoquinoline Core. HETEROCYCLES 2015. [DOI: 10.3987/com-15-13188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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108
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Imbri D, Tauber J, Opatz T. Synthetic approaches to the lamellarins--a comprehensive review. Mar Drugs 2014; 12:6142-77. [PMID: 25528958 PMCID: PMC4278223 DOI: 10.3390/md12126142] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 01/04/2023] Open
Abstract
The present review discusses the known synthetic routes to the lamellarin alkaloids published until 2014. It begins with syntheses of the structurally simpler type-II lamellarins and then focuses on the larger class of the 5,6-saturated and -unsaturated type-I lamellarins. The syntheses are grouped by the strategy employed for the assembly of the central pyrrole ring.
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Affiliation(s)
- Dennis Imbri
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Johannes Tauber
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
| | - Till Opatz
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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109
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Imperatore C, Aiello A, D'Aniello F, Senese M, Menna M. Alkaloids from marine invertebrates as important leads for anticancer drugs discovery and development. Molecules 2014; 19:20391-423. [PMID: 25490431 PMCID: PMC6270949 DOI: 10.3390/molecules191220391] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/07/2014] [Accepted: 11/27/2014] [Indexed: 11/27/2022] Open
Abstract
The present review describes research on novel natural antitumor alkaloids isolated from marine invertebrates. The structure, origin, and confirmed cytotoxic activity of more than 130 novel alkaloids belonging to several structural families (indoles, pyrroles, pyrazines, quinolines, and pyridoacridines), together with some of their synthetic analogs, are illustrated. Recent discoveries concerning the current state of the potential and/or development of some of them as new drugs, as well as the current knowledge regarding their modes of action, are also summarized. A special emphasis is given to the role of marine invertebrate alkaloids as an important source of leads for anticancer drug discovery.
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Affiliation(s)
- Concetta Imperatore
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, Napoli 80131, Italy.
| | - Anna Aiello
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, Napoli 80131, Italy.
| | - Filomena D'Aniello
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, Napoli 80131, Italy.
| | - Maria Senese
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, Napoli 80131, Italy.
| | - Marialuisa Menna
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, Napoli 80131, Italy.
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110
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Karthikeyan I, Sekar G. Iron-Catalyzed C-H Bond Functionalization for the Exclusive Synthesis of Pyrido[1,2-a]indoles or Triarylmethanols. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403233] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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111
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Yang C, Wong ILK, Jin WB, Jiang T, Chow LMC, Wan SB. Modification of marine natural product ningalin B and SAR study lead to potent P-glycoprotein inhibitors. Mar Drugs 2014; 12:5209-21. [PMID: 25329704 PMCID: PMC4210895 DOI: 10.3390/md12105209] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 09/01/2014] [Accepted: 09/25/2014] [Indexed: 11/28/2022] Open
Abstract
In this study, new marine ningalin B analogues containing a piperazine or a benzoloxy group at ring C have been synthesized and evaluated on their P-gp modulating activity in human breast cancer and leukemia cell lines. Their structure-activity relationship was preliminarily studied. Compounds 19 and 20 are potent P-gp inhibitors. These two synthetic analogues of permethyl ningalin B may be potentially used as effective modulators of P-gp-mediated drug resistance in cancer cells.
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Affiliation(s)
- Chao Yang
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Iris L K Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Wen Bin Jin
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Tao Jiang
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Larry M C Chow
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Sheng Biao Wan
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
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112
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Shen L, Xie N, Yang B, Hu Y, Zhang Y. Design and total synthesis of Mannich derivatives of marine natural product lamellarin D as cytotoxic agents. Eur J Med Chem 2014; 85:807-17. [DOI: 10.1016/j.ejmech.2014.08.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 08/09/2014] [Accepted: 08/11/2014] [Indexed: 11/15/2022]
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113
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Tan XC, Liang Y, Bao FP, Wang HS, Pan YM. Silver-mediated C–H bond functionalization: one-pot to construct substituted indolizines from 2-alkylazaarenes with alkynes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.085] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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114
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Kapdi AR, Prajapati D. Regioselective palladium-catalysed cross-coupling reactions: a powerful synthetic tool. RSC Adv 2014. [DOI: 10.1039/c4ra07895k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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115
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Li M, Zhao BX. Progress of the synthesis of condensed pyrazole derivatives (from 2010 to mid-2013). Eur J Med Chem 2014; 85:311-40. [PMID: 25104650 DOI: 10.1016/j.ejmech.2014.07.102] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 07/25/2014] [Accepted: 07/26/2014] [Indexed: 01/08/2023]
Abstract
Condensed pyrazole derivatives are important heterocyclic compounds due to their excellent biological activities and have been widely applied in pharmaceutical and agromedical fields. In recent years, numerous condensed pyrazole derivatives have been synthesized and advanced to clinic studies with various biological activities. In this review, we summarized the reported synthesis methods of condensed pyrazole derivatives from 2010 until now. All compounds are divided into three parts according to the rings connected to pyrazole-ring, i.e. [5, 5], [5,F 6], and [5, 7]-condensed pyrazole derivatives. The biological activities and applications in pharmaceutical fields are briefly introduced to offer an orientation for the design and synthesis of condensed pyrazole derivatives with good biological activities.
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Affiliation(s)
- Meng Li
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Bao-Xiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
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116
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Palladium(II)-catalyzed cyclization of heterocyclic ketene aminals with (E)-ethyl 2,3-diiodoacrylates: selective synthesis of bicyclic pyrroles and bicyclic pyridones. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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117
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Naganaboina RT, Nayak A, Peddinti RK. Trifluoroacetic acid-promoted Michael addition-cyclization reactions of vinylogous carbamates. Org Biomol Chem 2014; 12:3366-70. [PMID: 24756460 DOI: 10.1039/c4ob00437j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient methodology has been developed for the synthesis of pyrrolobenzoxazine and 3-arylamino coumarin derivatives promoted by trifluoroacetic acid. The initial step in the current protocol involves a Michael addition of the 1,4-benzoxazinone derivatives, a novel class of vinylogous carbamates to the Michael acceptors and subsequent cyclization.
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Affiliation(s)
- Ram Tilak Naganaboina
- The Department of Chemistry, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India.
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118
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Vila C, Lau J, Rueping M. Visible-light photoredox catalyzed synthesis of pyrroloisoquinolines via organocatalytic oxidation/[3 + 2] cycloaddition/oxidative aromatization reaction cascade with Rose Bengal. Beilstein J Org Chem 2014; 10:1233-8. [PMID: 24991273 PMCID: PMC4077507 DOI: 10.3762/bjoc.10.122] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 04/30/2014] [Indexed: 11/23/2022] Open
Abstract
Pyrrolo[2,1-a]isoquinoline alkaloids have been prepared via a visible light photoredox catalyzed oxidation/[3 + 2] cycloaddition/oxidative aromatization cascade using Rose Bengal as an organo-photocatalyst. A variety of pyrroloisoquinolines have been obtained in good yields under mild and metal-free reaction conditions.
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Affiliation(s)
- Carlos Vila
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Jonathan Lau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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119
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Lopez D, Martinez-Luis S. Marine natural products with P-glycoprotein inhibitor properties. Mar Drugs 2014; 12:525-46. [PMID: 24451193 PMCID: PMC3917285 DOI: 10.3390/md12010525] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/06/2014] [Accepted: 01/07/2014] [Indexed: 12/25/2022] Open
Abstract
P-glycoprotein (P-gp) is a protein belonging to the ATP-binding cassette (ABC) transporters superfamily that has clinical relevance due to its role in drug metabolism and multi-drug resistance (MDR) in several human pathogens and diseases. P-gp is a major cause of drug resistance in cancer, parasitic diseases, epilepsy and other disorders. This review article aims to summarize the research findings on the marine natural products with P-glycoprotein inhibitor properties. Natural compounds that modulate P-gp offer great possibilities for semi-synthetic modification to create new drugs and are valuable research tools to understand the function of complex ABC transporters.
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Affiliation(s)
- Dioxelis Lopez
- Center for Drug Discovery and Biodiversity, Institute for Scientific Research and Technology Services (INDICASAT), Clayton, City of Knowledge, P.O. Box 0843-01103, Panama.
| | - Sergio Martinez-Luis
- Center for Drug Discovery and Biodiversity, Institute for Scientific Research and Technology Services (INDICASAT), Clayton, City of Knowledge, P.O. Box 0843-01103, Panama.
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120
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Iwao M, Fukuda T, Itoyama R, Minagawa T. Rotational Energy Barrier around the C1–C11 Single Bond in Lamellarins: A Study by Variable-Temperature NMR. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)69] [Citation(s) in RCA: 6] [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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121
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A novel and diastereoselective construction of H-pyrazolo[3,2-a]isoquinoline fused spirooxindoles via [3+2] cycloaddition. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.116] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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122
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Marine invertebrate natural products for anti-inflammatory and chronic diseases. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:572859. [PMID: 24489586 PMCID: PMC3893779 DOI: 10.1155/2013/572859] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 12/10/2013] [Indexed: 12/17/2022]
Abstract
The marine environment represents a relatively available source of functional ingredients that can be applied to various aspects of food processing, storage, and fortification. Moreover, numerous marine invertebrates based compounds have biological activities and also interfere with the pathogenesis of diseases. Isolated compounds from marine invertebrates have been shown to pharmacological activities and are helpful for the invention and discovery of bioactive compounds, primarily for deadly diseases like cancer, acquired immunodeficiency syndrome (AIDS), osteoporosis, and so forth. Extensive research within the last decade has revealed that most chronic illnesses such as cancer, neurological diseases, diabetes, and autoimmune diseases exhibit dysregulation of multiple cell signaling pathways that have been linked to inflammation. On the basis of their bioactive properties, this review focuses on the potential use of marine invertebrate derived compounds on anti-inflammatory and some chronic diseases such as cardiovascular disease, osteoporosis, diabetes, HIV, and cancer.
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123
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Komatsubara M, Umeki T, Fukuda T, Iwao M. Modular synthesis of lamellarins via regioselective assembly of 3,4,5-differentially arylated pyrrole-2-carboxylates. J Org Chem 2013; 79:529-37. [PMID: 24364699 DOI: 10.1021/jo402181w] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A modular synthesis of lamellarins via 3,4,5-differentially arylated pyrrole-2-carboxylate intermediates has been developed. The key reactions employed are Br-Li exchange-methoxycarbonylation of 2,5-dibromo-1-(tert-butoxycarbonyl)-1H-pyrrole (1) followed by palladium-catalyzed iterative Suzuki-Miyaura coupling of the pyrrole core. The 3,4,5-triarylpyrrole 4 thus synthesized was readily converted to 5,6-saturated lamellarin L (2) and 5,6-unsaturated lamellarin N (3) via lactonization followed by annulation of the pyrrole nitrogen and lateral aromatic ring at C5 using 2-bromoethyl phenyl sulfide or bromoacetaldehyde dimethyl acetal as two-carbon homologation agents. In principle, this strategy allows the production of diverse lamellarins in short steps with high yields using readily accessible arylboronic acids as aromatic modules.
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Affiliation(s)
- Masashi Komatsubara
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University , 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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124
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Liu J, Yan P, Li Y, Zhou Z, Ye W, Yao J, Wang C. Iodine-promoted synthesis of acylindolizine derivatives from acetylenecarboxylates and pyridinium, isoquinolinium, or quinolinium ylides. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1120-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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125
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Dighe SU, Batra S. Iodine-mediated electrophilic tandem cyclization of 2-alkynylbenzaldehydes with anthranilic acid leading to 1,2-dihydroisoquinoline-fused benzoxazinones. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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126
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Rajaram S, Ramulu U, Ramesh D, Srikanth D, Bhattacharya P, Prabhakar P, Kalivendi SV, Babu KS, Venkateswarlu Y, Navath S. Anti-cancer evaluation of carboxamides of furano-sesquiterpene carboxylic acids from the soft coral Sinularia kavarattiensis. Bioorg Med Chem Lett 2013; 23:6234-8. [PMID: 24144848 DOI: 10.1016/j.bmcl.2013.09.093] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 09/25/2013] [Accepted: 09/30/2013] [Indexed: 12/01/2022]
Abstract
The chemical investigation of soft coral Sinularia kavarattiensis is described. It yielded furano-sesquiterpene carboxylic acids 1 and 2 and their methyl esters 3 and 4. Semi-synthesis of furano-sesquiterpene carboxylic acid 1 gave amide derivatives 5-12. Structures of all the compounds were established by IR, NMR and mass spectral analysis. Interestingly all compounds are selectively potent on leukemia cell line. All these compounds were screened for cytotoxic activity against five human cancer cell lines (leukemia, prostate, lung, breast and cervix). Among these compounds 9 and 10 showed promising activity against leukemia and prostate cancer cell lines.
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Affiliation(s)
- Singanaboina Rajaram
- Division of Natural Products Chemistry, Toxicology Laboratory, CSIR-IICT, Hyderabad 500 007, India
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127
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A convenient approach to the design and synthesis of indolo[3,2-c]coumarins via the microwave-assisted Cadogan reaction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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128
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Yoshida K, Itoyama R, Yamahira M, Tanaka J, Loaëc N, Lozach O, Durieu E, Fukuda T, Ishibashi F, Meijer L, Iwao M. Synthesis, Resolution, and Biological Evaluation of Atropisomeric (aR)- and (aS)-16-Methyllamellarins N: Unique Effects of the Axial Chirality on the Selectivity of Protein Kinases Inhibition. J Med Chem 2013; 56:7289-301. [DOI: 10.1021/jm400719y] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Kenyu Yoshida
- Division
of Chemistry and Materials Sciences, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Ryosuke Itoyama
- Division
of Chemistry and Materials Sciences, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masashi Yamahira
- Division
of Marine Life Science and Biochemistry, Graduate School of Fisheries
Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Junji Tanaka
- Institute
for Materials Chemistry and Engineering, Kyushu University, Kasuga
Koen 6-1, Kasuga 816-8580, Japan
| | - Nadège Loaëc
- Protein
Phosphorylation and Human Disease Group, Station Biologique, CNRS, 29680 Roscoff, Bretagne, France
- ManRos Therapeutics, Centre de Perharidy, 29680 Roscoff, Bretagne, France
| | - Olivier Lozach
- Protein
Phosphorylation and Human Disease Group, Station Biologique, CNRS, 29680 Roscoff, Bretagne, France
| | - Emilie Durieu
- Protein
Phosphorylation and Human Disease Group, Station Biologique, CNRS, 29680 Roscoff, Bretagne, France
- ManRos Therapeutics, Centre de Perharidy, 29680 Roscoff, Bretagne, France
| | - Tsutomu Fukuda
- Division
of Chemistry and Materials Sciences, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Fumito Ishibashi
- Division
of Marine Life Science and Biochemistry, Graduate School of Fisheries
Science and Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Laurent Meijer
- Protein
Phosphorylation and Human Disease Group, Station Biologique, CNRS, 29680 Roscoff, Bretagne, France
- ManRos Therapeutics, Centre de Perharidy, 29680 Roscoff, Bretagne, France
| | - Masatomo Iwao
- Division
of Chemistry and Materials Sciences, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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129
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Kannan PS, Yuvaraj P, Reddy BSR, Raja R, SubbiahPandi A. Methyl (3 S,10b' S)-5-chloro-9′-fluoro-1-methyl-2-oxo-5′-phenyl-10b' H-spiro[indoline-3,1′-pyrazolo[3,2- a]isoquinoline]-2′-carboxylate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o823-4. [PMID: 23795015 PMCID: PMC3684913 DOI: 10.1107/s1600536813011549] [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: 03/26/2013] [Accepted: 04/27/2013] [Indexed: 11/17/2022]
Abstract
In the title compound, C27H19ClFN3O3, the pyrazole ring has a twist conformation and the six-membered ring to which it is fused has a screw-boat conformation. The mean plane of the pyrazole ring is inclined to the 2-methylindoline ring by 85.03 (9) and by 28.17 (8)° to the mean plane of the isoquinoline ring system. In the crystal, molecules are linked by pairs of C—H⋯F hydrogen bonds, forming inversion dimers. These dimers are linked via C—H⋯O hydrogen bonds, forming a two-dimensional network lying parallel to (10-1).
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130
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Abstract
This review covers the literature published in 2011 for marine natural products, with 870 citations (558 for the period January to December 2011) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1152 for 2011), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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131
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Lima RT, Seca H, Palmeira A, Fernandes MX, Castro F, Correia-da-Silva M, Nascimento MSJ, Sousa E, Pinto M, Vasconcelos MH. Sulfated small molecules targeting eBV in Burkitt lymphoma: from in silico screening to the evidence of in vitro effect on viral episomal DNA. Chem Biol Drug Des 2013; 81:631-44. [PMID: 23350710 DOI: 10.1111/cbdd.12109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 11/13/2012] [Accepted: 01/08/2013] [Indexed: 12/13/2022]
Abstract
Epstein-Barr virus (EBV) infects more than 90% of the world population. Following primary infection, Epstein-Barr virus persists in an asymptomatic latent state. Occasionally, it may switch to lytic infection. Latent EBV infection has been associated with several diseases, such as Burkitt lymphoma (BL). To date, there are no available drugs to target latent EBV, and the existing broad-spectrum antiviral drugs are mainly active against lytic viral infection. Thus, using computational molecular docking, a virtual screen of a library of small molecules, including xanthones and flavonoids (described with potential for antiviral activity against EBV), was carried out targeting EBV proteins. The more interesting molecules were selected for further computational analysis, and subsequently, the compounds were tested in the Raji (BL) cell line, to evaluate their activity against latent EBV. This work identified three novel sulfated small molecules capable of decreasing EBV levels in a BL. Therefore, the in silico screening presents a good approach for the development of new anti-EBV agents.
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Affiliation(s)
- Raquel T Lima
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
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132
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Zahid M, Iaroshenko VO, Saghyan AS, Fischer C, Langer P. Convenient synthesis of benzo[b]pyrazolo[5,1-f][1,6]naphthyridines by silver triflate catalyzed three-component reaction of 2-alkynyl-3-formylquinolines, tosylhydrazine and carbonyl compounds. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.02.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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133
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Correia-da-Silva M, Sousa E, Pinto MMM. Emerging sulfated flavonoids and other polyphenols as drugs: nature as an inspiration. Med Res Rev 2013; 34:223-79. [PMID: 23553315 DOI: 10.1002/med.21282] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nature uses sulfation of endogenous and exogenous molecules mainly to avoid potential toxicity. The growing importance of natural sulfated molecules, as modulators of a number of physiological and pathological processes, has inspired the synthesis of non-natural sulfated scaffolds. Until the 1990s, the synthesis of sulfated small molecules was almost restricted to derivatives of flavonoids and aimed mainly at structure elucidation and plant biosynthesis studies. Currently, the synthesis of this type of compounds concerns structurally diverse scaffolds and is aimed at the development of potential drugs and/or exploitation of the biological effects of sulfated metabolites. Some important hit compounds are emerging from sulfated flavonoids and other polyphenols mainly as anticoagulant and antiviral agents. When compared with polymeric macromolecules such as heparins, sulfated small molecules could be of value in therapeutics due to their hydrophobic nature that can contribute to improve the bioavailability. This review highlights the synthetic approaches that were applied to obtain monosulfated or polysulfated phenolic small molecules and compiles the diverse biological activities already reported for this type of derivatives. Toxicity and pharmacokinetic parameters of this emerging class of derivatives will also be considered, emphasizing their value for therapeutic applications.
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Affiliation(s)
- Marta Correia-da-Silva
- Centro de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
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134
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'One-pot' synthesis of dihydrobenzo[4,5][1,3]oxazino[2,3-a] isoquinolines via a silver(I)-catalyzed cascade approach. Molecules 2013; 18:814-31. [PMID: 23344195 PMCID: PMC6270568 DOI: 10.3390/molecules18010814] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/04/2013] [Accepted: 01/05/2013] [Indexed: 11/20/2022] Open
Abstract
An efficient approach for the synthesis of biologically interesting fused tetracyclic isoquinolines in high yields and with a broad substrate scope has been developed. The strategy features an AgNO3 catalyzed ‘one-pot’ cascade process involving formation of two new C–N bonds and one new C–O bond.
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135
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136
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Lange PP, Bogdan AR, James K. A New Flow Methodology for the Expedient Synthesis of Drug‐Like 3‐Aminoindolizines. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200316] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paul P. Lange
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA, Fax: (+1)‐858‐784‐7550; phone: (+1)‐858‐784‐2507
| | - Andrew R. Bogdan
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA, Fax: (+1)‐858‐784‐7550; phone: (+1)‐858‐784‐2507
| | - Keith James
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA, Fax: (+1)‐858‐784‐7550; phone: (+1)‐858‐784‐2507
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137
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Shang Y, Wang L, He X, Zhang M. Novel syntheses of pyrrolo[2,1-a]isoquinolines via 1,3-dipolar cycloaddition between Isoquinoliniums and alkynes. RSC Adv 2012. [DOI: 10.1039/c2ra21116e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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138
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Coumarin polysulfides inhibit cell growth and induce apoptosis in HCT116 colon cancer cells. Bioorg Med Chem 2011; 20:1584-93. [PMID: 22264758 DOI: 10.1016/j.bmc.2011.12.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 12/14/2011] [Accepted: 12/17/2011] [Indexed: 12/22/2022]
Abstract
Coumarins and coumarin derivatives as well as diallyl polysulfides are well known as anticancer drugs. In order to find new drugs with anticancer activities, we combined coumarins with polysulfides in the form of di-coumarin polysulfides. These novel compounds were tested in the HCT116 colorectal cancer cell line. It turned out that they reduced cell viability of cancer cells in a time and concentration dependent manner. Cells tested with these coumarin polysulfides accumulate in the G(2)/M phase of the cell cycle and finally they go into apoptosis. A decrease in bcl-2 level, and increase in the level of bax, cytochrome c release into the cytosol, cleavage of caspase 3/7and PARP suggested that coumarin polysulfides induced the intrinsic pathway of apoptosis. Comparison of these new coumarin compounds with the well known diallyl polysulfides revealed that the coumarin disulfides were more active than the corresponding diallyl disulfides. The activities of the coumarin tetrasulfides and the corresponding diallyl tetrasulfides are similar. The novel coumarin compounds regulated the phosphatase activity of the cell cycle regulating cdc25 family members, indicating that these phosphatases are implicated in the induction of cell cycle arrest and possibly in apoptosis induction as well. In addition, coumarin polysulfides also down-regulated the level of cdc25C, which also contributed to the arrest in the G(2)-phase of the cell cycle.
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139
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Lu YK, Yao X, Luo LW, Lü RQ, Liu YQ. Benzyl 5-phenylpyrazolo[5,1- a]isoquinoline-1-carboxylate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o3488. [PMID: 22199960 PMCID: PMC3239112 DOI: 10.1107/s1600536811050586] [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: 11/23/2011] [Accepted: 11/24/2011] [Indexed: 11/11/2022]
Abstract
In the title compound, C25H18N2O2, the pyrazolo[5,1-a]isoquinoline ring system is approximately planar [maximum deviation = 0.027 (2) Å] and is oriented at dihedral angles of 57.22 (6) and 71.36 (7)° with respect to the two phenyl rings. The phenyl rings are twisted to each other by a dihedral angle of 66.33 (8)°. A weak intramolecular C—H⋯O hydrogen bond occurs. In the crystal, weak C—H⋯π interactions are present.
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140
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Synthesis, structure–activity relationships, and mechanism of action of anti-HIV-1 lamellarin α 20-sulfate analogues. Bioorg Med Chem 2011; 19:7541-50. [DOI: 10.1016/j.bmc.2011.10.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Accepted: 10/11/2011] [Indexed: 11/22/2022]
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141
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Uzair B, Mahmood Z, Tabassum S. Antiviral activity of natural products extracted from marine organisms. BIOIMPACTS : BI 2011; 1:203-11. [PMID: 23678429 DOI: 10.5681/bi.2011.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 08/14/2011] [Accepted: 08/25/2011] [Indexed: 11/17/2022]
Abstract
Many epidemics have broken out over the centuries. Hundreds and thousands of humans have died over a disease. Available treatments for infectious diseases have always been limited. Some infections are more deadly than the others, especially viral pathogens. These pathogens have continuously resisted all kinds of medical treatment, due to a need for new treatments to be developed. Drugs are present in nature and are also synthesized in vitro and they help in combating diseases and restoring health. Synthesizing drugs is a hard and time consuming task, which requires a lot of man power and financial aid. However, the natural compounds are just lying around on the earth, may it be land or water. Over a thousand novel compounds isolated from marine organisms are used as antiviral agents. Others are being pharmacologically tested. Today, over forty antiviral compounds are present in the pharmacological market. Some of these compounds are undergoing clinical and preclinical stages. Marine compounds are paving the way for a new trend in modern medicine.
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Affiliation(s)
- Bushra Uzair
- Department of Bioinformatics and Biotechnology, International Islamic University, Islamabad, Pakistan
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142
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Korotaev VY, Sosnovskikh VY, Barkov AY, Slepukhin PA, Ezhikova MA, Kodess MI, Shklyaev YV. A simple synthesis of the pentacyclic lamellarin skeleton from 3-nitro-2-(trifluoromethyl)-2H-chromenes and 1-methyl(benzyl)-3,4-dihydroisoquinolines. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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143
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144
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Wetzel S, Bon RS, Kumar K, Waldmann H. Biology-Oriented Synthesis. Angew Chem Int Ed Engl 2011; 50:10800-26. [DOI: 10.1002/anie.201007004] [Citation(s) in RCA: 396] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Indexed: 12/22/2022]
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145
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Zou YQ, Lu LQ, Fu L, Chang NJ, Rong J, Chen JR, Xiao WJ. Visible-light-induced oxidation/[3+2] cycloaddition/oxidative aromatization sequence: a photocatalytic strategy to construct pyrrolo[2,1-a]isoquinolines. Angew Chem Int Ed Engl 2011; 50:7171-5. [PMID: 21698733 DOI: 10.1002/anie.201102306] [Citation(s) in RCA: 366] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Indexed: 11/10/2022]
Affiliation(s)
- You-Quan Zou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei, China
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146
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Zou YQ, Lu LQ, Fu L, Chang NJ, Rong J, Chen JR, Xiao WJ. Visible-Light-Induced Oxidation/[3+2] Cycloaddition/Oxidative Aromatization Sequence: A Photocatalytic Strategy To Construct Pyrrolo[2,1-a]isoquinolines. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102306] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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147
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Song RJ, Liu Y, Hu RX, Liu YY, Wu JC, Yang XH, Li JH. Oxidative Cleavage of the CarbonCarbon σ-Bond Using Reusable Copper on Iron. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100225] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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148
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Zhu H, Stöckigt J, Yu Y, Zou H. “One-Pot” Multicomponent Approach to Indolizines and Pyrido[1,2-a]indoles. Org Lett 2011; 13:2792-4. [DOI: 10.1021/ol200883w] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huajian Zhu
- Institute of Materia Medica, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Joachim Stöckigt
- Institute of Materia Medica, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Yongping Yu
- Institute of Materia Medica, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Hongbin Zou
- Institute of Materia Medica, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
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149
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An efficient route to diverse H-pyrazolo[5,1-a]isoquinolines via sequential multi-component/cross-coupling reactions. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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150
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Li S, Wu J. Synthesis of H-Pyrazolo[5,1-a]isoquinolines via Copper(II)-Catalyzed Oxidation of an Aliphatic C−H Bond of Tertiary Amine in Air. Org Lett 2011; 13:712-5. [DOI: 10.1021/ol102939r] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shaoyu Li
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
| | - Jie Wu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
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