1
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Gade AC, Murahari M, Pavadai P, Kumar MS. Virtual Screening of a Marine Natural Product Database for In Silico Identification of a Potential Acetylcholinesterase Inhibitor. Life (Basel) 2023; 13:1298. [PMID: 37374081 DOI: 10.3390/life13061298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Alzheimer's disease is characterized by amyloid-beta aggregation and neurofibrillary tangles. Acetylcholinesterase (AChE) hydrolyses acetylcholine and induces amyloid-beta aggregation. Acetylcholinesterase inhibitors (AChEI) inhibit this aggregation by binding to AChE, making it a potential target for the treatment of AD. In this study, we have focused on the identification of potent and safe AChEI from the Comprehensive Marine Natural Product Database (CMNPD) using computational tools. For the screening of CMNPD, a structure-based pharmacophore model was generated using a structure of AChE complexed with the co-crystallized ligand galantamine (PDB ID: 4EY6). The 330 molecules that passed through the pharmacophore filter were retrieved, their drug-likeness was determined, and they were then subjected to molecular docking studies. The top ten molecules were selected depending upon their docking score and were submitted for toxicity profiling. Based on these studies, molecule 64 (CMNPD8714) was found to be the safest and was subjected to molecular dynamics simulations and density functional theory calculations. This molecule showed stable hydrogen bonding and stacked interactions with TYR341, mediated through a water bridge. In silico results can be correlated with in vitro studies for checking its activity and safety in the future.
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Affiliation(s)
| | - Manikanta Murahari
- Department of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram 522302, India
| | - Parasuraman Pavadai
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, M.S. Ramaiah University of Applied Sciences, Bengaluru 560054, India
| | - Maushmi Shailesh Kumar
- Somaiya Institute of Research and Consultancy, Somaiya Vidyavihar University, Mumbai 400077, India
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2
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Costa DCS, da S. M. Forezi L, Lessa MD, Delarmelina M, Matuck BVA, Freitas MCR, Ferreira VF, de C. Resende JAL, de M. Carneiro JW, de C. da Silva F. A Stereoselective, Base‐free, Palladium‐Catalyzed Heck Coupling Between 3‐halo‐1,4‐Naphthoquinones and Vinyl‐1
H
‐1,2,3‐Triazoles. ChemistrySelect 2022. [DOI: 10.1002/slct.202201334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dora C. S. Costa
- Universidade Federal Fluminense Instituto de Química Campus do Valonguinho, CEP 24020-150 Niterói RJ Brazil
| | - Luana da S. M. Forezi
- Universidade Federal Fluminense Instituto de Química Campus do Valonguinho, CEP 24020-150 Niterói RJ Brazil
| | - Milena D. Lessa
- Universidade Federal Fluminense Instituto de Química Campus do Valonguinho, CEP 24020-150 Niterói RJ Brazil
| | - Maicon Delarmelina
- School of Chemistry Cardiff University, Main Building Park Place Cardiff CF10 3AT United Kingdom
| | - Beatriz V. A. Matuck
- Universidade Federal Fluminense Instituto de Química Campus do Valonguinho, CEP 24020-150 Niterói RJ Brazil
| | - Maria Clara R. Freitas
- Universidade Federal Rural do Rio de Janeiro Instituto de Química Departamento de Química Fundamental e Inorgânica Campus Seropédica, CEP 23890-000 Seropédica RJ Brazil
| | - Vitor F. Ferreira
- Universidade Federal Fluminense Departamento de Tecnologia Farmacêutica Faculdade de Farmácia 24241-002 Niterói RJ Brazil
| | - Jackson A. L. de C. Resende
- Universidade Federal do Mato Grosso Campus Universitário do Araguaia Instituto de Ciências Exatas e da Terra 78698-000 Pontal do Araguaia MT Brazil
| | | | - Fernando de C. da Silva
- Universidade Federal Fluminense Instituto de Química Campus do Valonguinho, CEP 24020-150 Niterói RJ Brazil
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3
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Das S, Bhowmik A, Sarkar W, Mishra A, Deb I. Straightforward Access to Anthrone Functionalized Benzylic Amines via Organocatalytic 1,2-Addition of Anthrones to Imines at Ambient Temperature. J Org Chem 2021; 86:4131-4142. [PMID: 33620226 DOI: 10.1021/acs.joc.0c02959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Activation of anthrone via benzylic deprotonation in the presence of triethylamine paves the way for the 1,2-addition reaction with imines to provide the desired functionalized anthrones in good to excellent yields under mild and operationally simple reaction conditions with a broad range of substrate scopes without using any external additives or toxic stoichiometric reagents.
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Affiliation(s)
- Sumit Das
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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4
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Miyamura H, Tobita F, Suzuki A, Kobayashi S. Polymer Immobilized Bimetallic Nanoparticle Catalysts for Selective Hydrogenation of Quinones and Integration of Quinone-hydrogenation and Its Derivatization Using Sequential and Continuous-flow Systems. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Shimura J, Ando Y, Suzuki K. Hydroxylamine-Mediated Anthrapyranone Formation, Solving 5-exo/6-endo Issue toward Synthesis of Pluramycin-Class Antibiotics. Org Lett 2019; 22:175-179. [PMID: 31841345 DOI: 10.1021/acs.orglett.9b04127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In our synthetic study on pluramycin-class antibiotics, an unexpected issue arose, i.e., unfavorable regioselectivity of 5-exo rather than 6-endo cyclization to form the pyranone ring. The issue was solved by an addition-elimination process of a phenol-ynone substrate. AZADOL was specifically effective, enabling the first synthesis of saptomycinone H.
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Affiliation(s)
- Jun Shimura
- Department of Chemistry , Tokyo Institute of Technology , 2-12-1 O-okayama , Meguro-ku , Tokyo 152-8551 , Japan
| | - Yoshio Ando
- Department of Chemistry , Tokyo Institute of Technology , 2-12-1 O-okayama , Meguro-ku , Tokyo 152-8551 , Japan
| | - Keisuke Suzuki
- Department of Chemistry , Tokyo Institute of Technology , 2-12-1 O-okayama , Meguro-ku , Tokyo 152-8551 , Japan
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6
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Miyamura H, Tobita F, Suzuki A, Kobayashi S. Direct Synthesis of Hydroquinones from Quinones through Sequential and Continuous‐Flow Hydrogenation‐Derivatization Using Heterogeneous Au–Pt Nanoparticles as Catalysts. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hiroyuki Miyamura
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Fumiya Tobita
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Aya Suzuki
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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7
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Miyamura H, Tobita F, Suzuki A, Kobayashi S. Direct Synthesis of Hydroquinones from Quinones through Sequential and Continuous‐Flow Hydrogenation‐Derivatization Using Heterogeneous Au–Pt Nanoparticles as Catalysts. Angew Chem Int Ed Engl 2019; 58:9220-9224. [DOI: 10.1002/anie.201904159] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Hiroyuki Miyamura
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Fumiya Tobita
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Aya Suzuki
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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8
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Pacheco P, Galvão R, Faria A, Von Ranke N, Rangel M, Ribeiro T, Bello M, Rodrigues C, Ferreira V, da Rocha D, Faria R. 8-Hydroxy-2-(1H-1,2,3-triazol-1-yl)-1,4-naphtoquinone derivatives inhibited P2X7 Receptor-Induced dye uptake into murine Macrophages. Bioorg Med Chem 2019; 27:1449-1455. [DOI: 10.1016/j.bmc.2018.11.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 11/20/2018] [Accepted: 11/26/2018] [Indexed: 12/26/2022]
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9
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Tatsuta K, Sekine D, Hayama S, Kataoka Y, Hayashi S, Hosokawa S. Total Synthesis and Structural Determination of XR774, a Tyrosine Kinase Inhibitor. J Org Chem 2018; 83:7010-7018. [PMID: 29338228 DOI: 10.1021/acs.joc.7b02997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Total synthesis and structural determination of XR774 has been accomplished. The benzo[ j]fluoranthene skeleton has been constructed by regioselective coupling between tetraline 3 and tetralone 4 successively followed by the sequential transformation including the Birch reduction to prepare allylic alcohol, simultaneous bromination of vinylic and aromatic moieties, and the nickel-mediated intramolecular coupling reaction. The optical resolution of racemic 17 led to the first total synthesis of (-)-XR774.
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Affiliation(s)
- Kuniaki Tatsuta
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Daisuke Sekine
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Shinichi Hayama
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Yasuhiro Kataoka
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Shinya Hayashi
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Seijiro Hosokawa
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
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10
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Construction of the DEF-ring system of nogalamycin and menogaril via an efficient Suzuki-Miyaura reaction. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Zhao H, Xiao M, Xu L, Wang L, Xiao J. Bifunctional thiourea catalyzed asymmetric Michael addition of anthrone to methyleneindolinones. RSC Adv 2016. [DOI: 10.1039/c5ra21614a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bifunctional thiourea catalyzed asymmetric conjugate addition of anthrones to methyleneindolinones were developed to prepare biologically significant hybrid derivatives of oxindoles and anthrones in high yield, high regioselectivity and stereoselectivity.
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Affiliation(s)
- Huaili Zhao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Mingyan Xiao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
- Open Project Program of Hubei Key Laboratory of Drug Synthesis and Optimization
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
- Open Project Program of Hubei Key Laboratory of Drug Synthesis and Optimization
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12
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Yue Q, Zhao Y, Sun B, Hai L, Guo L, Wu Y. First Synthesis and Characterization of Stereoisomers of Choleretic Drug Dihydroxydibutylether. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201500450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Jones KD, Rixson JE, Skelton BW, Gericke KM, Stewart SG. The Total Synthesis of Heraclemycin B through β-Ketosulfoxide and Aldehyde Annulation. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kieran D. Jones
- School of Chemistry and Biochemistry; The University of Western Australia (M310); 35 Stirling Highway Crawley WA 6009 (Australia)
| | - James E. Rixson
- School of Chemistry and Biochemistry; The University of Western Australia (M310); 35 Stirling Highway Crawley WA 6009 (Australia)
| | - Brian W. Skelton
- Centre for Microscopy, Characterisation and Analysis; The University of Western Australia; Crawley WA 6009 Australia
| | | | - Scott G. Stewart
- School of Chemistry and Biochemistry; The University of Western Australia (M310); 35 Stirling Highway Crawley WA 6009 (Australia)
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14
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Metal-free methodology for the preparation of sterically hindered alkynoylphenols and its application to the synthesis of flavones and aurones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.097] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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15
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Salim AA, Xiao X, Cho KJ, Piggott AM, Lacey E, Hancock JF, Capon RJ. Rare Streptomyces sp. polyketides as modulators of K-Ras localisation. Org Biomol Chem 2015; 12:4872-8. [PMID: 24875924 DOI: 10.1039/c4ob00745j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemical investigations of a soil-derived Streptomyces sp. led to the isolation of five new polyketides, (+)-oxanthromicin, (±)-hemi-oxanthromicins A/B, (±)-spiro-oxanthromicin A and oxanthroquinone, and the known alkaloid staurosporine, and the detection of four new metastable analogues, (±)-spiro-oxanthromicins B1/B2/C1/C2. Among the compounds tested, SAR investigations established that the synthetic oxanthroquinone ethyl ester and 3-O-methyl-oxanthroquinone ethyl ester were optimal at mislocalising oncogenic mutant K-Ras from the plasma membrane of intact Madin-Darby canine kidney (MDCK) cells (IC50 4.6 and 1.2 μM), while a sub-EC50 dose of (±)-spiro-oxanthromicin A was optimal at potentiating (750%) the K-Ras inhibitory activity of staurosporine (IC50 60 pM). These studies demonstrate that a rare class of Streptomyces polyketide modulates K-Ras plasma membrane localisation, with implications for the future treatment of K-Ras dependent cancers.
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Affiliation(s)
- Angela A Salim
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia.
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16
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Suzuki K, Matsumoto T, Kitamura K, Ando Y, Maezawa Y. Toward the Pluramycins: Route Exploration from Dihydroxyanthrone Tricyclic Platform to an Aglycon, Saptomycinone B. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Nicolaou KC, Hale CR, Nilewski C, Ioannidou HA, ElMarrouni A, Nilewski LG, Beabout K, Wang TT, Shamoo Y. Total synthesis of viridicatumtoxin B and analogues thereof: strategy evolution, structural revision, and biological evaluation. J Am Chem Soc 2014; 136:12137-60. [PMID: 25317739 PMCID: PMC4210137 DOI: 10.1021/ja506472u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Indexed: 11/29/2022]
Abstract
The details of the total synthesis of viridicatumtoxin B (1) are described. Initial synthetic strategies toward this intriguing tetracycline antibiotic resulted in the development of key alkylation and Lewis acid-mediated spirocyclization reactions to form the hindered EF spirojunction, as well as Michael-Dieckmann reactions to set the A and C rings. The use of an aromatic A-ring substrate, however, was found to be unsuitable for the introduction of the requisite hydroxyl groups at carbons 4a and 12a. Applying these previous tactics, we developed stepwise approaches to oxidize carbons 12a and 4a based on enol- and enolate-based oxidations, respectively, the latter of which was accomplished after systematic investigations that revealed critical reactivity patterns. The herein described synthetic strategy resulted in the total synthesis of viridicatumtoxin B (1), which, in turn, formed the basis for the revision of its originally assigned structure. The developed chemistry facilitated the synthesis of a series of viridicatumtoxin analogues, which were evaluated against Gram-positive and Gram-negative bacterial strains, including drug-resistant pathogens, revealing the first structure-activity relationships within this structural type.
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Affiliation(s)
- K. C. Nicolaou
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Christopher R.
H. Hale
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Christian Nilewski
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Heraklidia A. Ioannidou
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Abdelatif ElMarrouni
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Lizanne G. Nilewski
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Kathryn Beabout
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Tim T. Wang
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yousif Shamoo
- Department of Chemistry, Department of Biochemistry
and Cell Biology, and Department of
Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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18
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Hartung J, Wright BJD, Danishefsky SJ. Studies toward the total synthesis of pluraflavin A. Chemistry 2014; 20:8731-6. [PMID: 24919792 PMCID: PMC4795151 DOI: 10.1002/chem.201402254] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Indexed: 11/05/2022]
Abstract
A synthetic strategy towards the potent cytostatic agent pluraflavin A has been developed. Formation of the enantioenriched anthrapyran core bearing a halogen atom enabled the introduction of the α C-aryl glycoside by Stille cross-coupling and subsequent hydrogenation of the aryl glycal. Chemo- and stereoselective O-glycosylations of α oliose and β 3-epi vancosamine residues afforded a fully glycosylated aromatic core. Attempts to install the dimethylamino group of the C-disaccharide suggest that introduction of an azide group by displacement and subsequent reduction may pave the way to the total synthesis of pluraflavin A.
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Affiliation(s)
- John Hartung
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027
| | | | - Samuel J. Danishefsky
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027
- Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, Fax: (+) (212) 772-8691
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19
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Labarre-Lainé J, Periñan I, Desvergnes V, Landais Y. Synthesis of the C10-C24-bis-spiroacetal core of 13-desmethyl spirolide C based on a sila-Stetter-acetalization process. Chemistry 2014; 20:9336-41. [PMID: 24925107 DOI: 10.1002/chem.201402894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Indexed: 11/11/2022]
Abstract
Synthesis of the bis-spiroacetal core of 13-desmethyl spirolide C has been completed based on a sila-Stetter-acetalization process. The acylsilane and enone partners in the Stetter reaction were prepared in 7 and 11 steps, respectively, from (S) and (R)-aspartic acid. The quaternary center at C19 in the enone moiety was controlled by relying on the Seebach's chiral self-reproduction method using an enantiopure (S)-lactic acid based dioxolanone. The final acid-catalyzed spiroacetalization provided the desired spiroacetal as a mixture of diastereoisomers in 13 linear steps. Whatever the conditions used, the non-natural transoid isomer was formed preferentially. However, both cisoid and transoid isomers were isolated pure and their structure assigned unambiguously through NMR spectroscopic studies.
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Affiliation(s)
- Jessica Labarre-Lainé
- University of Bordeaux, 351, Cours de la libération, 33405 Talence Cedex (France), Fax: (+33) 5-40-00-62-86
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20
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Kitamura K, Maezawa Y, Ando Y, Kusumi T, Matsumoto T, Suzuki K. Synthesis of the Pluramycins 2: Total Synthesis and Structure Assignment of Saptomycin B. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Synthesis of the Pluramycins 2: Total Synthesis and Structure Assignment of Saptomycin B. Angew Chem Int Ed Engl 2013; 53:1262-5. [DOI: 10.1002/anie.201308017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Indexed: 11/07/2022]
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22
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Zhang X, Liu J, Sun X, Du Y. An efficient cis-reduction of alkyne to alkene in the presence of a vinyl iodide: stereoselective synthesis of the C22–C31 fragment of leiodolide A. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Rao MLN, Giri S. Pd-catalyzed threefold arylations of mono, di and tetra-bromoquinones using triarylbismuth reagents. RSC Adv 2012. [DOI: 10.1039/c2ra22058j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Suyama TL, Gerwick WH, McPhail KL. Survey of marine natural product structure revisions: a synergy of spectroscopy and chemical synthesis. Bioorg Med Chem 2011; 19:6675-701. [PMID: 21715178 PMCID: PMC3205310 DOI: 10.1016/j.bmc.2011.06.011] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 05/09/2011] [Accepted: 06/02/2011] [Indexed: 11/16/2022]
Abstract
The structural assignment of new natural product molecules supports research in a multitude of disciplines that may lead to new therapeutic agents and or new understanding of disease biology. However, reports of numerous structural revisions, even of recently elucidated natural products, inspired the present survey of techniques used in structural misassignments and subsequent revisions in the context of constitutional or configurational errors. Given the comparatively recent development of marine natural products chemistry, coincident with modern spectroscopy, it is of interest to consider the relative roles of spectroscopy and chemical synthesis in the structure elucidation and revision of those marine natural products that were initially misassigned. Thus, a tabulated review of all marine natural product structural revisions from 2005 to 2010 is organized according to structural motif revised. Misassignments of constitution are more frequent than perhaps anticipated by reliance on HMBC and other advanced NMR experiments, especially when considering the full complement of all natural products. However, these techniques also feature prominently in structural revisions, specifically of marine natural products. Nevertheless, as is the case for revision of relative and absolute configuration, total synthesis is a proven partner for marine, as well as terrestrial, natural products structure elucidation. It also becomes apparent that considerable 'detective work' remains in structure elucidation, in spite of the spectacular advances in spectroscopic techniques.
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Affiliation(s)
- Takashi L. Suyama
- Department of Pharmaceutical Sciences, 203 Pharmacy Building, Oregon State University, Corvallis OR 97331, U.S.A
| | - William H. Gerwick
- Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla CA 92093-0212, U.S.A
| | - Kerry L. McPhail
- Department of Pharmaceutical Sciences, 203 Pharmacy Building, Oregon State University, Corvallis OR 97331, U.S.A
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Neufeind S, Hülsken N, Neudörfl JM, Schlörer N, Schmalz HG. Total Synthesis of cyclo-Mumbaistatin Analogues through Anionic Homo-Fries Rearrangement. Chemistry 2011; 17:2633-41. [DOI: 10.1002/chem.201003166] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Indexed: 11/07/2022]
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Toumieux S, Beniazza R, Desvergnes V, Aráoz R, Molgó J, Landais Y. Synthesis of the gymnodimine tetrahydrofuran core through a Ueno–Stork radical cyclization. Org Biomol Chem 2011; 9:3726-32. [DOI: 10.1039/c1ob05240c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bermejo-Bescós P, Martín-Aragón S, Jiménez-Aliaga KL, Ortega A, Molina MT, Buxaderas E, Orellana G, Csákÿ AG. In vitro antiamyloidogenic properties of 1,4-naphthoquinones. Biochem Biophys Res Commun 2010; 400:169-74. [DOI: 10.1016/j.bbrc.2010.08.038] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 08/10/2010] [Indexed: 11/29/2022]
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28
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Hypervalent iodine oxidation of phenol derivatives using a catalytic amount of 4-iodophenoxyacetic acid and Oxone® as a co-oxidant. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.124] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Facile synthesis of indole- or benzofuran-fused benzo[a]carbazole-1,4-diones using a tandem two-step reaction sequence. Mol Divers 2010; 15:91-9. [DOI: 10.1007/s11030-010-9241-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 02/22/2010] [Indexed: 10/19/2022]
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Hayden AE, Paton RS, Becker J, Lim YH, Nicolaou KC, Houk KN. Origins of regioselectivity of Diels-Alder reactions for the synthesis of bisanthraquinone antibiotic BE-43472B. J Org Chem 2010; 75:922-8. [PMID: 20027998 PMCID: PMC2813957 DOI: 10.1021/jo902572y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The regioselectivities of several Diels-Alder reactions utilized en route to bisanthraquinone antibiotic BE-43472B are examined using density functional theory calculations. These reactions involve highly substituted dienes and juglone dienophiles, and there is an opposite regiochemical outcome for Diels-Alder reactions with beta-aryl substituted juglones when compared to reactions of unsubstituted juglone. In this article, the effect of an aromatic conjugating group bonded to juglone is explored.
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Affiliation(s)
- Amy E. Hayden
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569
| | - Robert S. Paton
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569
| | - Jochen Becker
- Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, and the Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093
| | - Yee Hwee Lim
- Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, and the Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093
| | - K. C. Nicolaou
- Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, and the Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569
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Wright BJD, Hartung J, Peng F, Van de Water R, Liu H, Tan QH, Chou TC, Danishefsky SJ. Synthesis of pluraflavin A "aglycone". J Am Chem Soc 2009; 130:16786-90. [PMID: 19049469 DOI: 10.1021/ja805936v] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The "aglycone" of pluraflavin A (2) has been synthesized. The key features of this synthesis include a 1,3-dipolar cycloaddition between a nitrile oxide (cf. 14) and an olefin (22) to yield an isoxazoline followed by subsequent conversion into the gamma-pyrone of pluraflavin A. The epoxide moiety linked to the pyrone is installed prior to Diels-Alder installation of the D ring, which allows access to a number of potentially active cytotoxic intermediates en route to the final compound. The preliminary in vitro results of two such compounds are also included with the racemic title compound exhibiting cytotoxicity in the nanomolar range.
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Affiliation(s)
- Benjamin J D Wright
- Department of Chemistry, Columbia University, Havemeyer Hall, 3000 Broadway, New York, New York 10027, USA
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Yakura T, Yamauchi Y, Tian Y, Omoto M. Catalytic hypervalent iodine oxidation of p-dialkoxybenzenes to p-quinones using 4-iodophenoxyacetic acid and Oxone. Chem Pharm Bull (Tokyo) 2009; 56:1632-4. [PMID: 18981622 DOI: 10.1248/cpb.56.1632] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A catalytic hypervalent iodine oxidation of p-dialkoxybenzenes using 4-iodophenoxyacetic acid (1) and 2KHSO5 x KHSO4 x K2SO4 (Oxone) was developed. Reaction of p-dialkoxybenzenes (2) with a catalytic amount of 1 in the presence of Oxone as a co-oxidant in 2,2,2-trifluoroethanol-water (1 : 2) gave the corresponding p-quinones (3) in excellent yields without purification. This procedure was applied to synthesis of blattellaquinone (9), the sex pheromone of the German cockroach, Blattella germanica.
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Affiliation(s)
- Takayuki Yakura
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, USA.
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