1
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Chen Y, Zhang C, Wang K, Li M, Tang H, Cheng W, Yin J, Yi W. Cu(I)-Catalyzed Three-Component Annulation for the Synthesis of 3-Acyl Imidazo[1, 5- a]Pyridines from 2-Pyridinyl-Substituted p-Quinone Methides, Terminal Alkynes, and TsN 3 Using O 2 as the Oxygen Source. J Org Chem 2024; 89:5423-5433. [PMID: 38557074 DOI: 10.1021/acs.joc.3c02876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Currently, most conventional methods to achieve imidazo[1,5-a]pyridines have limitations for the synthesis of 3-acyl imidazo[1,5-a]pyridines. Herein, a novel and efficient Cu(I)-catalyzed three-component annulation method for the synthesis of valuable 3-acyl imidazo[1,5-a]pyridines by the reaction of 2-pyridinyl-substituted p-QMs, terminal alkynes, and TsN3 in the presence of O2 under mild conditions have successfully been developed. The investigation indicated that molecular oxygen (O2) and TsN3, respectively, serving as oxygen and nitrogen sources, were essential for the successful completion of the reaction system.
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Affiliation(s)
- Yan Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Chuanhao Zhang
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kunpeng Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Mengfan Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Hao Tang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Wen Cheng
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Jun Yin
- Shanghai No.4 Reagent Chemical Co., Ltd., Shanghai 201512, P. R. China
| | - Weiyin Yi
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
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2
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Tan HY, Liang FM, Zhang WJ, Zhang Y, Cui JH, Dai YY, Qiu XM, Wang WH, Zhou Y, Chen DP, Li CP. Novel 2-Amino-1,4-Naphthoquinone Derivatives Induce A549 Cell Death through Autophagy. Molecules 2023; 28:molecules28083289. [PMID: 37110525 PMCID: PMC10143525 DOI: 10.3390/molecules28083289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/14/2023] [Accepted: 03/28/2023] [Indexed: 04/29/2023] Open
Abstract
A series of 1,4-naphthoquinone derivatives containing were synthesized as anti-cancer agents and the crystal structure of compound 5a was confirmed by X-ray diffraction. In addition, the inhibitory activities against four cancer cell lines (HepG2, A549, K562, and PC-3) were tested, respectively, and compound 5i showed significant cytotoxicity on the A549 cell line with the IC50 of 6.15 μM. Surprisingly, in the following preliminary biological experiments, we found that compound 5i induced autophagy by promoting the recycling of EGFR and signal transduction in the A549 cell, resulting in the activation of the EGFR signal pathway. The potential binding pattern between compound 5i and EGFR tyrosine kinase (PDB ID: 1M17) was also identified by molecular docking. Our research paves the way for further studies and the development of novel and powerful anti-cancer drugs.
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Affiliation(s)
- Hua-Yuan Tan
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Feng-Ming Liang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Wen-Jing Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yi Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Jun-Hao Cui
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yu-Yu Dai
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Xue-Mei Qiu
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Wen-Hang Wang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yue Zhou
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
| | - Dan-Ping Chen
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
| | - Cheng-Peng Li
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
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3
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Ma L, Chen X, Zhu S, Chen W, Ma Q, Fan W, Zhang J, Guo L. New β-carboline derivatives containing imidazolium as potential VEGFR2 inhibitors: synthesis, X-ray structure, antiproliferative evaluations, and molecular modeling. RSC Med Chem 2022; 13:1064-1076. [PMID: 36324492 PMCID: PMC9491354 DOI: 10.1039/d2md00065b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/12/2022] [Indexed: 09/19/2023] Open
Abstract
A series of new β-carboline derivatives containing an imidazolium moiety were designed and synthesized via the reaction of β-carboline-1-carboxaldehydes, acetyl chloride, primary amine, and formaldehyde. The antitumor activity of the synthesized compounds was examined against lung carcinoma (A549), gastric carcinoma (BGC-823), murine colon carcinoma (CT-26), liver carcinoma (Bel-7402) and breast carcinoma (MCF-7) cells. The results indicated that most compounds exhibited significant antiproliferative activity, in some cases greater than that of cisplatin, and compound 3z was found to be the most potent antiproliferative agent against A549, BGC823, CT-26, Bel-7402 and MCF-7 cell lines with an IC50 value of 2.7 ± 0.4, 2.7 ± 0.6, 2.4 ± 0.2, 3.2 ± 0.2, and 5.6 ± 0.3 μM, respectively. Combined with favorable in vitro potency, the antitumor efficacies of the selected compounds in mice were also evaluated. Compound 3z exhibited potent antitumor activity with a tumor inhibition rate of 48.6% in sarcoma 180 models. Preliminary investigations on the mechanisms of action revealed that compound 3z could dramatically inhibit EA.hy926 cell tube formation in a dose-dependent manner. Further investigation of the preliminary mechanism of action demonstrated that compound 3z had obvious angiogenesis inhibitory effects in the chicken chorioallantoic membrane (CAM) assay. The results of the docking study showed a good fitting of the new compounds 3o and 3z to the active site of VEGFR-2 with a docking score energy of -11.31 kcal per mole and -11.26 kcal per mole, respectively.
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Affiliation(s)
- Ling Ma
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of XinJiang Bingtuan, Shihezi University Shihezi China
| | - Xiaofei Chen
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of XinJiang Bingtuan, Shihezi University Shihezi China
| | - Siyu Zhu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of XinJiang Bingtuan, Shihezi University Shihezi China
| | - Wei Chen
- XinJiang Huashidan Pharmaceutical Research Co. Ltd. Urumqi China
| | - Qin Ma
- XinJiang Huashidan Pharmaceutical Research Co. Ltd. Urumqi China
| | - Wenxi Fan
- XinJiang Huashidan Pharmaceutical Research Co. Ltd. Urumqi China
| | - Jie Zhang
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of XinJiang Bingtuan, Shihezi University Shihezi China
| | - Liang Guo
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of XinJiang Bingtuan, Shihezi University Shihezi China
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4
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Basu S, Rana S, Saha P, Ghosh P, Mukhopadhyay C. FeCl 3-Catalyzed Synthesis of 6-Thioxo-hexahydroindeno[1',2':4,5]imidazo[1,5- a]pyridin-12(6 H)-ones via an Interesting [1,2] Oxygen Shift Pathway. J Org Chem 2022; 87:9755-9763. [PMID: 35839324 DOI: 10.1021/acs.joc.2c00788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An iron-catalyst mediated one-pot multicomponent route for the synthesis of novel 6-thioxo-hexahydroindeno[1',2':4,5]imidazo[1,5-a]pyridin-12(6H)-one scaffolds has been developed using ninhydrin, l-proline, and aryl isothiocyanates in ethanol medium. This methodology offers an interesting [1,2] oxygen shift mechanism pathway via a number of ring-opening and ring-closing cascade steps to provide diverse substituted hexahydroindeno-imidazo[1,5-a]pyridinones in excellent to good yields. The stereochemistry of the proline ring is lost during the course of the reaction. This protocol is well acceptable toward both electron-accepting and electron-donating functionalities at the ortho-, meta-, and para-positions of the isothiocyanate moiety. Nonhazardous conditions, step economic, and easy operational process are the advantages of this methodology.
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Affiliation(s)
- Soumyadip Basu
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Soumitra Rana
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Pinaki Saha
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 700103, India
| | - Prasanta Ghosh
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 700103, India
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
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5
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Ramana Reddy M, Darapaneni CM, Patil RD, Kumari H. Recent synthetic methodologies for imidazo[1,5- a]pyridines and related heterocycles. Org Biomol Chem 2022; 20:3440-3468. [PMID: 35394477 DOI: 10.1039/d2ob00386d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Imidazo[1,5-a]pyridine is a significant structural component of a large number of agrochemicals and pharmaceuticals. The synthesis of imidazo[1,5-a]pyridine has been a subject of intense research for numerous decades. A large number of transformations are now available to conveniently access imidazo[1,5-a]pyridine from readily available starting materials. This review details the recent development in imidazo[1,5-a]pyridine construction involving cyclocondensation, cycloaddition, oxidative cyclization, and transannulation reactions.
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Affiliation(s)
- Mittapalli Ramana Reddy
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
| | | | - Rajendra D Patil
- School of Chemical Sciences, Moolji Jaitha College, Jalgaon, Maharashratra, India, 425001
| | - Harshita Kumari
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
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6
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Jorunnamycin A Suppresses Stem-Like Phenotypes and Sensitizes Cisplatin-Induced Apoptosis in Cancer Stem-Like Cell-Enriched Spheroids of Human Lung Cancer Cells. Mar Drugs 2021; 19:md19050261. [PMID: 34063628 PMCID: PMC8147647 DOI: 10.3390/md19050261] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 12/30/2022] Open
Abstract
It has been recognized that cancer stem-like cells (CSCs) in tumor tissue crucially contribute to therapeutic failure, resulting in a high mortality rate in lung cancer patients. Due to their stem-like features of self-renewal and tumor formation, CSCs can lead to drug resistance and tumor recurrence. Herein, the suppressive effect of jorunnamycin A, a bistetrahydroisoquinolinequinone isolated from Thai blue sponge Xestospongia sp., on cancer spheroid initiation and self-renewal in the CSCs of human lung cancer cells is revealed. The depletion of stemness transcription factors, including Nanog, Oct-4, and Sox2 in the lung CSC-enriched population treated with jorunnamycin A (0.5 μM), resulted from the activation of GSK-3β and the consequent downregulation of β-catenin. Interestingly, pretreatment with jorunnamycin A at 0.5 μM for 24 h considerably sensitized lung CSCs to cisplatin-induced apoptosis, as evidenced by upregulated p53 and decreased Bcl-2 in jorunnamycin A-pretreated CSC-enriched spheroids. Moreover, the combination treatment of jorunnamycin A (0.5 μM) and cisplatin (25 μM) also diminished CD133-overexpresssing cells presented in CSC-enriched spheroids. Thus, evidence on the regulatory functions of jorunnamycin A may facilitate the development of this marine-derived compound as a novel chemotherapy agent that targets CSCs in lung cancer treatment.
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7
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Sandeep M, Shantharjun B, Pradeep Kumar G, Rajender Reddy K. Oxidative Copper‐Catalyzed Regioselective Trifluoromethylation of Fused Imidazo[1,5‐
a
]‐
N
‐heteroarenes using Langlois Reagent. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Bangarigalla Shantharjun
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
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8
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Aksenov DA, Arutiunov NA, Maliuga VV, Aksenov AV, Rubin M. Synthesis of imidazo[1,5- a]pyridines via cyclocondensation of 2-(aminomethyl)pyridines with electrophilically activated nitroalkanes. Beilstein J Org Chem 2020; 16:2903-2910. [PMID: 33299488 PMCID: PMC7705866 DOI: 10.3762/bjoc.16.239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/19/2020] [Indexed: 12/21/2022] Open
Abstract
Imidazo[1,5-a]pyridines were efficiently prepared via the cyclization of 2-picolylamines with nitroalkanes electrophilically activated in the presence of phosphorous acid in polyphosphoric acid (PPA) medium.
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Affiliation(s)
- Dmitrii A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russian Federation
| | - Nikolai A Arutiunov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russian Federation
| | - Vladimir V Maliuga
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russian Federation
| | - Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russian Federation
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russian Federation
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA
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9
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Tukhtaev DB, Saidov AS, Turgunov KK, Vinogradova VI, Tashkhodzhaev B. Synthesis of N-Containing Heterocycles Based on α-Amino Acids. 1. 8,9-Dimethoxy-5,6-Dihydro-3-Phenyl-1-Alkylimidazo[5,1-a]Isoquinolines. Chem Nat Compd 2019. [DOI: 10.1007/s10600-019-02908-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Sandeep M, Muzaffar-ur-Rehman MD, Pradeep Kumar G, Sridhar B, Reddy KR. One-Pot Synthesis of 3-Sulfenyl/Selenylimidazo[1,5- a
]quinolines from 2-Methylquinolines, Aliphatic Amines/Amino Acids, and Dichalcogenides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - MD. Muzaffar-ur-Rehman
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
| | - Balasubramanian Sridhar
- X-ray Crystallography Division; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
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11
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Herr JM, Rössiger C, Albrecht G, Yanagi H, Göttlich R. Solvent-free microwave-assisted synthesis of imidazo[1,5- a]pyridine and –quinoline derivatives. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1650188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jasmin Martha Herr
- Institute of Organic Chemistry, Justus-Liebig-University Giessen, Giessen, Germany
- Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Giessen, Germany
| | - Carina Rössiger
- Institute of Organic Chemistry, Justus-Liebig-University Giessen, Giessen, Germany
- Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Giessen, Germany
| | - Georg Albrecht
- Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Giessen, Germany
- Institute of Applied Physics, Justus-Liebig-University Giessen, Giessen, Germany
| | - Hisao Yanagi
- Department of Materials Science, NAIST, Nara, Japan
| | - Richard Göttlich
- Institute of Organic Chemistry, Justus-Liebig-University Giessen, Giessen, Germany
- Center for Materials Research (LaMa), Justus-Liebig-University Giessen, Giessen, Germany
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12
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Synthesis and biological evaluation of 2-chloro-3-[(thiazol-2-yl)amino]-1,4-naphthoquinones. Bioorg Med Chem Lett 2019; 29:1572-1575. [DOI: 10.1016/j.bmcl.2019.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 11/22/2022]
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13
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Venkanna A, Cho KH, Dhorma LP, Kumar DN, Hah JM, Park HG, Kim SY, Kim MH. Chemistry-oriented synthesis (ChOS) and target deconvolution on neuroprotective effect of a novel scaffold, oxaza spiroquinone. Eur J Med Chem 2019; 163:453-480. [DOI: 10.1016/j.ejmech.2018.11.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/13/2018] [Accepted: 11/16/2018] [Indexed: 01/09/2023]
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14
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A study on the reaction of 3-alkyl(aryl)imidazo[1,5- a]pyridines with ninhydrin. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2018. [DOI: 10.1515/znb-2018-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
The reaction of 3-alkyl(aryl)imidazo[1,5-a]pyridines (1) with ninhydrin in dichloromethane at room temperature delivered good yields of the respective 2-hydroxy-2-(imidazo[1,5-a]pyridine-1-yl)indene-1,3-diones. In the presence of dimethyl acetylenedicarboxylate (DMAD), this uncatalyzed electrophilic substitution reaction, involving C-1 (in 1) and the central C=O (in ninhydrin), takes precedence over the three-component 1,4-dipolar cycloaddition reaction. This selectivity is probably due to the higher electrophilicity of the carbonyl carbon-2 in ninhydrin as compared to that of the sp-carbon atoms in DMAD, augmented with the high nucleophilicity of carbon-1 in 1.
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15
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Kurhade S, Diekstra E, Sutanto F, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. Multicomponent Reaction Based Synthesis of 1-Tetrazolylimidazo[1,5- a]pyridines. Org Lett 2018; 20:3871-3874. [PMID: 29943994 PMCID: PMC6038091 DOI: 10.1021/acs.orglett.8b01452] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
A series
of unprecedented tetrazole-linked imidazo[1,5-a]pyridines
are synthesized from simple and readily available
building blocks. The reaction sequence involves an azido-Ugi-deprotection
reaction followed by an acetic anhydride-mediated N-acylation–cyclization process to afford the target heterocycle.
Furthermore, the scope of the methodology was extended to diverse
R3-substitutions by employing commercial anhydrides, acid
chlorides, and acids as an acyl component. The scope for the postmodification
reactions are explored and the usefulness of the synthesis is exemplified
by an improved three-step synthesis of a guanylate cyclase stimulator.
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Affiliation(s)
- Santosh Kurhade
- Department of Drug Design , University of Groningen , A. Deusinglaan 1 , 9713 AV Groningen , The Netherlands
| | - Elmar Diekstra
- Department of Drug Design , University of Groningen , A. Deusinglaan 1 , 9713 AV Groningen , The Netherlands
| | - Fandi Sutanto
- Department of Drug Design , University of Groningen , A. Deusinglaan 1 , 9713 AV Groningen , The Netherlands
| | - Katarzyna Kurpiewska
- Jagiellonian University , Faculty of Chemistry , Gronostajowa 2 , 30-387 Krakow , Poland
| | | | - Alexander Dömling
- Department of Drug Design , University of Groningen , A. Deusinglaan 1 , 9713 AV Groningen , The Netherlands
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16
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Sandeep M, Swati Dushyant P, Sravani B, Rajender Reddy K. Direct Access to Halogenated Fused Imidazo[1,5-a
]N
-heteroaromatics through Copper-Promoted Double Oxidative C-H Amination and Halogenation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800628] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - Patil Swati Dushyant
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
| | - Boda Sravani
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
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17
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Asby DJ, Radigois MG, Wilson DC, Cuda F, Chai CLL, Chen A, Bienemann AS, Light ME, Harrowven DC, Tavassoli A. Triggering apoptosis in cancer cells with an analogue of cribrostatin 6 that elevates intracellular ROS. Org Biomol Chem 2018; 14:9322-9330. [PMID: 27722456 DOI: 10.1039/c6ob01591c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elevation of reactive oxygen species (ROS) is both a consequence and driver of the upregulated metabolism and proliferation of transformed cells. The resulting increase in oxidative stress is postulated to saturate the cellular antioxidant machinery, leaving cancer cells susceptible to agents that further elevate their intracellular oxidative stress. Several small molecules, including the marine natural product cribrostatin 6, have been demonstrated to trigger apoptosis in cancer cells by increasing intracellular ROS. Here, we report the modular synthesis of a series of cribrostatin 6 derivatives, and assessment of their activity in a number of cell lines. We establish that placing a phenyl ring on carbon 8 of cribrostatin 6 leads to increased potency, and observe a window of selectivity towards cancer cells. The mechanism of activity of this more potent analogue is assessed and demonstrated to induce apoptosis in cancer cells by increasing ROS. Our results demonstrate the potential for targeting tumors with molecules that enhance intracellular oxidative stress.
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Affiliation(s)
- D J Asby
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
| | - M G Radigois
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK. and Institute of Chemical and Engineering Sciences, A*Star, 138665, Singapore
| | - D C Wilson
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
| | - F Cuda
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
| | - C L L Chai
- Institute of Chemical and Engineering Sciences, A*Star, 138665, Singapore and Department of Pharmacy, National University of Singapore, 117543, Singapore
| | - A Chen
- Institute of Chemical and Engineering Sciences, A*Star, 138665, Singapore
| | - A S Bienemann
- School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol, BS10 5NB, UK
| | - M E Light
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
| | - D C Harrowven
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
| | - A Tavassoli
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK. and The Institute for Life Sciences, University of Southampton, Southampton, UK
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18
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Yan Z, Wan C, Yang Y, Zha Z, Wang Z. The synthesis of imidazo[1,5-a]quinolinesviaa decarboxylative cyclization under metal-free conditions. RSC Adv 2018; 8:23058-23065. [PMID: 35540158 PMCID: PMC9081590 DOI: 10.1039/c8ra03786h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/15/2018] [Indexed: 11/21/2022] Open
Abstract
An iodine-mediated decarboxylative cyclization was developed from α-amino acids and 2-methyl quinolines under metal-free conditions, affording a variety of imidazo[1,5-a]quinolines with moderate to good yields. An iodine-mediated decarboxylative cyclization was developed from α-amino acids and 2-methyl quinolines under metal-free conditions, affording a variety of imidazo[1,5-a]quinolines with moderate to good yields.![]()
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Affiliation(s)
- Zicong Yan
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Changfeng Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Yu Yang
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
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19
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Sammor MS, Hussein AQ, Awwadi FF, El-Abadelah MM. One-pot synthesis of novel 3,10-dihydro-2H-1,3-oxazepino[7,6-b]indoles via 1,4-dipolar cycloaddition reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Bori J, Behera N, Mahata S, Manivannan V. Synthesis of Imidazo[5, 1- a
]isoquinoline and Its 3-Substituted Analogues Including the Fluorescent 3-(1-Isoquinolinyl)imidazo[5, 1- a
]isoquinoline. ChemistrySelect 2017. [DOI: 10.1002/slct.201702420] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jugal Bori
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Nibedita Behera
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Satyajit Mahata
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Vadivelu Manivannan
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
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21
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Sun Y, Ai X, Hou J, Ye X, Liu R, Shen S, Li Z, Lu S. Integrated discovery of FOXO1-DNA stabilizers from marine natural products to restore chemosensitivity to anti-EGFR-based therapy for metastatic lung cancer. MOLECULAR BIOSYSTEMS 2017; 13:330-337. [PMID: 27966721 DOI: 10.1039/c6mb00678g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The transcription factor forkhead box O1 (FOXO1) negatively regulates activated EGFR signaling by turning on the gene expression of tumor suppressor Kruppel-like factor 6. Here, we propose that the chemosensitivity to anti-EGFR-based lung cancer therapy can be restored by stabilization of the FOXO1-DNA complex architecture using small-molecule marine natural medicines. A synthetic protocol that integrates computational ligand-protein-DNA binding analysis and an experimental fluorescence binding assay was applied against a large library of structurally diverse, drug-like marine natural products to discover novel stabilizers of DNA-bound FOXO1 conformation. The screening utilized chemical similarity analysis to exclude structurally redundant compounds, and then carried out high-throughput molecular docking and computational binding analysis to identify potential marine natural product candidates. Consequently, eight commercially available hits were selected and tested in vitro, from which four marine natural product compounds (tanzawaic acid D, hymenidin, cribrostatin 6 and barbamide) were found to have high or moderate potency to selectively bind to the FOXO1 DNA-binding domain (DBD) in the presence of its cognate DNA partner. Atomistic molecular dynamics (MD) simulations revealed that the identified stabilizers do not directly interact with DNA; instead, they can effectively stabilize the free FOXO1 DBD domain in the DNA-bound conformation and thus promote the binding of FOXO1 to DNA.
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Affiliation(s)
- Yingjia Sun
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Xinghao Ai
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Jingwen Hou
- Instrumental Analysis Center, Shanghai Jiaotong University, Shanghai 200240, P. R. China
| | - Xiangyun Ye
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Ruijun Liu
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Shengping Shen
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Ziming Li
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
| | - Shun Lu
- Oncology Department, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, P. R. China.
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22
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23
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Mihorianu M, Franz MH, Jones PG, Freytag M, Kelter G, Fiebig HH, Tamm M, Neda I. N-Heterocyclic carbenes derived from imidazo-[1,5-a]pyridines related to natural products: synthesis, structure and potential biological activity of some corresponding gold(I) and silver(I) complexes. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3474] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Monica Mihorianu
- Institut für Anorganische und Analytische Chemie; Technische Universität Carola Wilhelmina; Hagenring 30 D-38106 Braunschweig Germany
| | - M Heiko Franz
- InnoChemTech GmbH; Hagenring 30 D-38106 Braunschweig Germany
- Institutul National de Cercetare Dezvoltare pentru Electrochimie si Materie Condensata; Str. Dr A. Paunescu Podeanu Nr 144 Ro-300569 Timisoara Romania
| | - Peter G Jones
- Institut für Anorganische und Analytische Chemie; Technische Universität Carola Wilhelmina; Hagenring 30 D-38106 Braunschweig Germany
| | - Matthias Freytag
- Institut für Anorganische und Analytische Chemie; Technische Universität Carola Wilhelmina; Hagenring 30 D-38106 Braunschweig Germany
| | - Gerhard Kelter
- Oncotest GmbH; Am Flughafen 12-14 D-79108 Freiburg Germany
| | | | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie; Technische Universität Carola Wilhelmina; Hagenring 30 D-38106 Braunschweig Germany
| | - Ion Neda
- Institut für Anorganische und Analytische Chemie; Technische Universität Carola Wilhelmina; Hagenring 30 D-38106 Braunschweig Germany
- Institutul National de Cercetare Dezvoltare pentru Electrochimie si Materie Condensata; Str. Dr A. Paunescu Podeanu Nr 144 Ro-300569 Timisoara Romania
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24
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M. El-Abadelah M, A. Hodali H, S. Zreid M, F. Awwadi F, M. Abadleh M, Voelter W. A Convenient Synthetic Route for Substituted 1-(Aryldiazenyl)Imidazo[1,5-a]Pyridine. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Ramesha AB, Sandhya NC, Pavan Kumar CS, Hiremath M, Mantelingu K, Rangappa KS. A novel approach for the synthesis of imidazo and triazolopyridines from dithioesters. NEW J CHEM 2016. [DOI: 10.1039/c6nj01038e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Various imidazo- and triazolo-pyridines were synthesised by the intramolecular cyclization of pyridine 2-methylamine and dithioesters under mild conditions.
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26
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Xie Z, Peng J, Zhu Q. Copper-mediated C(sp3)–H amination in a multiple C–N bond-forming strategy for the synthesis of N-heterocycles. Org Chem Front 2016. [DOI: 10.1039/c5qo00313j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component reaction for the construction of imidazo[1,5-a]pyridines through copper-promoted C(sp3)–H amination has been developed.
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Affiliation(s)
- Zeqiang Xie
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Jiangling Peng
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
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27
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Yokoya M, Kobayashi K, Sato M, Saito N. Chemistry of Renieramycins. Part 14: Total Synthesis of Renieramycin I and Practical Synthesis of Cribrostatin 4 (Renieramycin H). Mar Drugs 2015; 13:4915-33. [PMID: 26287215 PMCID: PMC4557007 DOI: 10.3390/md13084915] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Revised: 07/21/2015] [Accepted: 07/22/2015] [Indexed: 11/16/2022] Open
Abstract
The first total synthesis of (±)-renieramycin I, which was isolated from the Indian bright blue sponge Haliclona cribricutis, is described. The key step is the selenium oxide oxidation of pentacyclic bis-p-quinone derivative (3) stereo- and regioselectively. We also report a large-scale synthesis of cribrostatin 4 (renieramycin H) via the C3-C4 double bond formation in an early stage based on the Avendaño's protocol, from readily available 1-acetyl-3-(3-methyl-2,4,5-trimethylphenyl)methyl-piperazine-2,5-dione (8) in 18 steps (8.3% overall yield). The synthesis provides unambiguous evidence supporting the original structure of renieramycin I.
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Affiliation(s)
- Masashi Yokoya
- Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
| | - Keiichiro Kobayashi
- Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
| | - Mitsuhiro Sato
- Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
| | - Naoki Saito
- Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
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28
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Gupta AP, Pandotra P, Kushwaha M, Khan S, Sharma R, Gupta S. Alkaloids: A Source of Anticancer Agents from Nature. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63462-7.00009-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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29
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Affiliation(s)
| | - Naoki Saito
- Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University
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30
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Yu MS, Lee WC, Chen CH, Tsai FY, Ong TG. Controlled regiodivergent C-H bond activation of imidazo[1,5-a]pyridine via synergistic cooperation between aluminum and nickel. Org Lett 2014; 16:4826-9. [PMID: 25202856 DOI: 10.1021/ol502314p] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The catalytic method features a cooperative interaction between Ni and Al imparting remote C-H alkenylation at the C5 position of imidazo[1,5-a]pyridine with alkynes at mild conditions. Exclusion of AlMe3 switches the selectivity to the C3 position. Reactions with styrene and other olefinic substrates affording C5-adducts by Ni/Al catalysis are also included.
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Affiliation(s)
- Ming-Shiuan Yu
- Institute of Chemistry, Academia Sinica , Nangang, Taipei 11529, Taiwan, Republic of China
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31
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Sreelatha T, Kandhasamy S, Dinesh R, Shruthy S, Shweta S, Mukesh D, Karunagaran D, Balaji R, Mathivanan N, Perumal PT. Synthesis and SAR study of novel anticancer and antimicrobial naphthoquinone amide derivatives. Bioorg Med Chem Lett 2014; 24:3647-51. [PMID: 24913712 DOI: 10.1016/j.bmcl.2014.04.080] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 04/08/2014] [Accepted: 04/21/2014] [Indexed: 01/10/2023]
Abstract
A series of novel naphthoquinone amide derivatives of the bioactive quinones, plumbagin, juglone, menadione and lawsone, with various amino acids were synthesized. The compounds were characterized by (1)H NMR, (13)C NMR, Mass, IR and elemental analysis. All the compounds were evaluated for their anticancer activity against HeLa and SAS cancer cell lines and 3D-QSAR indicated the presence of electron donating group near sulphur enhanced the activity against HeLa cells. Among the derivatives synthesized, compounds 11f, 10a, 10b and 10g were the most active with IC50 values of 16, 12, 14 and 24.5 μM, respectively. The analogues were also screened for antimicrobial activity against two human bacterial pathogens, the Gram-positive Methicillin resistant Staphylococcus aureus (MRSA) and the Gram-negative Pseudomonas aeruginosa and a human yeast pathogen, Fluconazole resistant Candida albicans (FRCA). Among the synthesized compounds, 8g, 10g and 11g exhibited maximum antibacterial activity towards MRSA and antifungal activity against FRCA in well diffusion method.
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Affiliation(s)
- Thonthula Sreelatha
- Organic Chemistry Division, Central Leather Research Institute (CSIR), Chennai 600 020, India.
| | - Subramani Kandhasamy
- Organic Chemistry Division, Central Leather Research Institute (CSIR), Chennai 600 020, India
| | - Raghu Dinesh
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Suresh Shruthy
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Sinha Shweta
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Doble Mukesh
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Devarajan Karunagaran
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Ravichandran Balaji
- Biocontrol and Microbial Metabolites Lab, Centre for Advanced Studies in Botany, University of Madras, Maraimalai Campus, Guindy, Chennai 600 025, India
| | - Narayanasamy Mathivanan
- Biocontrol and Microbial Metabolites Lab, Centre for Advanced Studies in Botany, University of Madras, Maraimalai Campus, Guindy, Chennai 600 025, India
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32
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Pelletier G, Charette AB. Triflic anhydride mediated synthesis of imidazo[1,5-a]azines. Org Lett 2013; 15:2290-3. [PMID: 23614638 DOI: 10.1021/ol400870b] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Imidazo[1,5-a]azines are synthesized in moderate to excellent yields using a mild cyclodehydration/aromatization reaction triggered by the use of triflic anhydride (Tf2O) and 2-methoxypyridine (2-MeOPyr). Various substitution patterns and functional groups were found to be compatible under the optimized conditions. In addition, a 5-bromo-3-aryl derivative was also shown to be active in a Sonogashira cross-coupling and direct arylation reactions. A tertiary amide was compatible as a substrate leading to the synthesis of an imidazo[1,5-a]pyridinium triflate.
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Affiliation(s)
- Guillaume Pelletier
- Centre in Green Chemistry and Catalysis, Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada, H3C 3J7
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33
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Kundu N, Bhattacharya K, Abtab SMT, Chaudhury M. ‘One-pot’ synthesis of multi-ring heteroaromatic compounds involving a pair of imidazo[1,5-a]pyridine moiety: reporting an interesting bis-bidentate ligand capable of forming helicates. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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34
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Isoxazolo(aza)naphthoquinones: a new class of cytotoxic Hsp90 inhibitors. Eur J Med Chem 2012; 53:64-75. [PMID: 22538015 DOI: 10.1016/j.ejmech.2012.03.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 01/28/2012] [Accepted: 03/20/2012] [Indexed: 12/20/2022]
Abstract
A series of 3-aryl-naphtho[2,3-d]isoxazole-4,9-diones and some of their 6-aza analogues were synthesized and found to inhibit the heat shock protein 90 (Hsp90). The compounds were tested for their binding to Hsp90 and for their effects on Hsp90 client proteins expression in a series of human tumour cell lines. Representative compounds (7f, 10c) downregulated the Hsp90 client proteins EGFR, Akt, Cdk4, Raf-1, and survivin, and upregulated Hsp70. Most of the compounds, in particular the alkylated 3-pyridyl derivatives, exhibited potent antiproliferative activity, down to two-digit nanomolar range. Preliminary results indicated in vivo activity of 7f against human epithelial carcinoma A431 model growing as tumour xenograft in nude mice, thus supporting the therapeutic potential of this novel series of Hsp90 inhibitors.
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35
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Knueppel D, Martin SF. Tandem Electrocyclic Ring Opening/Radical Cyclization: Application to the Total Synthesis of Cribrostatin 6. Tetrahedron 2011; 67:9765-9770. [PMID: 22125344 PMCID: PMC3224041 DOI: 10.1016/j.tet.2011.08.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A concise total synthesis ofcribrostatin 6 (1), an antimicrobial and antineoplastic agent,was accomplished using a tandem electrocyclic ring opening/radical cyclization sequence. Specifically, intermediate4 underwent a 4π-electrocyclic ring opening, radical cyclization, and homolytic aromatic substitution sequence followed by an oxidation to afford the natural product1in one pot. Owing to the rapid buildup of complexity in the key step, 1 could be synthesized from commercially available starting materials in only four linear steps. Application of this chemistry to the concise syntheses of analogs of cribrostatin 6 (1) is also reported.
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Affiliation(s)
| | - Stephen F. Martin
- Department of Chemistry and Biochemistry and The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
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36
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Mohamed M, Gonçalves TP, Whitby RJ, Sneddon HF, Harrowven DC. New Insights into Cyclobutenone Rearrangements: A Total Synthesis of the Natural ROS-Generating Anti-Cancer Agent Cribrostatin 6. Chemistry 2011; 17:13698-705. [DOI: 10.1002/chem.201102263] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Indexed: 11/07/2022]
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37
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Lisboa CDS, Santos VG, Vaz BG, de Lucas NC, Eberlin MN, Garden SJ. C−H Functionalization of 1,4-Naphthoquinone by Oxidative Coupling with Anilines in the Presence of a Catalytic Quantity of Copper(II) Acetate. J Org Chem 2011; 76:5264-73. [DOI: 10.1021/jo200354u] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Cinthia da S. Lisboa
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária CT bloco A, Ilha do Fundão, RJ 21941-909, Brazil
| | - Vanessa G. Santos
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas − UNICAMP, 13084-971, Campinas SP, Brazil
| | - Boniek G. Vaz
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas − UNICAMP, 13084-971, Campinas SP, Brazil
| | - Nanci C. de Lucas
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária CT bloco A, Ilha do Fundão, RJ 21941-909, Brazil
| | - Marcos N. Eberlin
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas − UNICAMP, 13084-971, Campinas SP, Brazil
| | - Simon J. Garden
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária CT bloco A, Ilha do Fundão, RJ 21941-909, Brazil
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38
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Roy S, Javed S, Olmstead MM, Patra AK. First structural example of a metal uncoordinated mesoionic imidazo[1,5-a]pyridine and its precursor intermediate copper complex: an insight to the catalytic cycle. Dalton Trans 2011; 40:12866-76. [DOI: 10.1039/c1dt11435b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Abstract
The ocean contains a host of macroscopic life in a great microbial soup. Unlike the terrestrial environment, an aqueous environment provides perpetual propinquity and blurs spatial distinctions. Marine organisms are under a persistent threat of infection by resident pathogenic microbes including bacteria, and in response they have engineered complex organic compounds with antibacterial activity from a diverse set of biological precursors. The diluting effect of the ocean drives the construction of potent molecules that are stable to harsh salty conditions. Members of each class of metabolite-ribosomal and non-ribosomal peptides, alkaloids, polyketides, and terpenes-have been shown to exhibit antibacterial activity. The sophistication and diversity of these metabolites points to the ingenuity and flexibility of biosynthetic processes in Nature. Compared with their terrestrial counterparts, antibacterial marine natural products have received much less attention. Thus, a concerted effort to discover new antibacterials from marine sources has the potential to contribute significantly to the treatment of the ever increasing drug-resistant infectious diseases.
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Affiliation(s)
- Chambers C. Hughes
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, UCSD, 9500 Gilman Dr. La Jolla, CA 92093-0204 (USA)
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, UCSD, 9500 Gilman Dr. La Jolla, CA 92093-0204 (USA)
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40
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Kim SH, Kim YM, Park BR, Kim JN. Synthesis of Imidazo[1,5-α]quinolines and Imidazo[5,1-α]isoquinolines via the In-Mediated Allylation of Reissert Compounds. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.10.3031] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Hoyt MT, Palchaudhuri R, Hergenrother PJ. Cribrostatin 6 induces death in cancer cells through a reactive oxygen species (ROS)-mediated mechanism. Invest New Drugs 2010; 29:562-73. [PMID: 20169400 DOI: 10.1007/s10637-010-9390-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Accepted: 01/13/2010] [Indexed: 01/06/2023]
Abstract
Cribrostatin 6 is a quinone-containing natural product that induces the death of cancer cell lines in culture, and its mechanism of action and scope of activity are unknown. Here we show that cribrostatin 6 has broad anticancer activity, potently inducing apoptotic cell death that is not preceded by any defined cell cycle arrest. Consistent with this data, we find that cribrostatin 6 treated cells have large amounts of reactive oxygen species (ROS) and, based on transcript profiling experiments and other data, this ROS generation is likely the primary mechanism by which cribrostatin 6 induces apoptosis. Given the success of certain ROS producers as anticancer agents, cribrostatin 6 has potential as a novel chemotherapeutic agent.
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Affiliation(s)
- Mirth T Hoyt
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL, 61801, USA
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Zhang A, Zheng X, Fan J, Shen W. Synthesis of imidazo[1,5-a]pyridines from 1,1-dibromo-1-alkenes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.12.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Abstract
Fast and furious: Cribrostatin 6, an antimicrobial and antineoplastic agent, was the target of a total synthesis where the longest linear sequence was only four steps. The key step involves a tandem 4pi electrocyclic ring opening, radical cyclization, and homolytic aromatic substitution sequence to afford the tricyclic core of the natural product.
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Affiliation(s)
- Daniel Knueppel
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station-A5300, Austin, TX 78712-1167, USA
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Abstract
The synthesis of cribrostatin 6 (1) is described. A regioselective bromination, a biaryl coupling, and an intramolecular cyclization are the key steps in the synthesis.
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Affiliation(s)
- Michael D Markey
- Department of Chemistry, Eugene F. Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
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Mayer AMS, Gustafson KR. Marine pharmacology in 2003–2004: Anti-tumour and cytotoxic compounds. Eur J Cancer 2006; 42:2241-70. [PMID: 16901686 DOI: 10.1016/j.ejca.2006.05.019] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2006] [Revised: 05/09/2006] [Accepted: 05/10/2006] [Indexed: 11/15/2022]
Abstract
During 2003 and 2004, marine pharmacology research directed towards the discovery and development of novel anti-tumour agents was published in 163 peer-reviewed articles. The purpose of this review is to present a structured assessment of the anti-tumour and cytotoxic properties of 150 marine natural products, many of which are novel compounds that belong to diverse structural classes, including polyketides, terpenes, steroids and peptides. The organisms yielding these bioactive marine compounds include invertebrate animals, algae, fungi and bacteria. Anti-tumour pharmacological studies were conducted with 31 structurally defined marine natural products in a number of experimental and clinical models that further defined their mechanisms of action. Particularly potent in vitro cytotoxicity data generated with murine and human tumour cell lines was reported for 119 novel marine chemicals with as yet undetermined mechanisms of action. Noteworthy is the fact that marine anti-cancer research was sustained by a global collaborative effort, involving researchers from Australia, Austria, Canada, China, Egypt, France, Germany, Italy, Japan, Mexico, the Netherlands, New Zealand, Papua New Guinea, the Philippines, South Africa, South Korea, Spain, Switzerland, Taiwan, Thailand and the United States of America (USA). Finally, this 2003-2004 overview of the marine pharmacology literature highlights the fact that the discovery of novel marine anti-tumour agents continued at the same pace as during 1998-2002.
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Affiliation(s)
- Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA.
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Abstract
This review covers the literature published in 2004 for marine natural products, with 693 citations (491 for the period January to December 2004) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (716 for 2004), together with their relevant biological activities, source organisms and country of origin. Biosynthetic studies (8), and syntheses (80), including those 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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49
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Abstract
Novel and structurally diverse natural products containing imidazol-, oxazole-, or thiazole-unit(s) display a wide variety of biological activities. The isolation, biological activity and total synthesis of naturally occurring muscarine, imidazole, oxazole and thiazole alkaloids have been reviewed. The literature covers from January 2003 to June 2004.
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Affiliation(s)
- Zhong Jin
- Institute and State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, PR China.
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Abstract
This review covers the literature published in 2003 for marine natural products, with 619 citations (413 for the period January to December 2003) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (656 for 2003), together with their relevant biological activities, source organisms and country or origin. Biosynthetic studies or syntheses that lead to the revision of structures or stereochemistries have been included (78), including any first total syntheses of a marine natural product.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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