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Yasudomi T, Yakushiji H, Torikai K, Ebine M, Oishi T. Unified Synthesis of the DEF and GHI Ring Systems of Maitotoxin. CHEM LETT 2019. [DOI: 10.1246/cl.190479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takaya Yasudomi
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Yakushiji
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kohei Torikai
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Makoto Ebine
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tohru Oishi
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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Oishi T. Design and Synthesis of Artificial Ladder-Shaped Polyethers for Exploring Biological Functions. HETEROCYCLES 2019. [DOI: 10.3987/rev-18-sr(f)1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Janssens J, Risseeuw MDP, Van der Eycken J, Van Calenbergh S. Regioselective Ring Opening of 1,3-Dioxane-Type Acetals in Carbohydrates. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801245] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jonas Janssens
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Martijn D. P. Risseeuw
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
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Sawyer TK, Guerlavais V, Darlak K, Feyfant E. Macrocyclic α-Helical Peptide Drug Discovery. MACROCYCLES IN DRUG DISCOVERY 2014. [DOI: 10.1039/9781782623113-00339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Macrocyclic α-helical peptides have emerged as a promising new drug class and within the scope of hydrocarbon-stapled peptides such molecules have advanced into the clinic. The overarching concept of designing proteomimetics of an α-helical ‘ligand’ which binds its cognate ‘target’ relative to α-helical interfacing protein-protein interactions has been well-validated and expanded through numerous investigations for a plethora of therapeutic targets oftentimes referred to as “undruggable” with respect to other modalities (e.g., small-molecule or proteins). This chapter highlights the evolution of macrocyclic α-helical peptides in terms of target space, biophysical and computational chemistry, structural diversity and synthesis, drug design and chemical biology. It is noteworthy that hydrocarbon-stapled peptides have successfully risen to the summit of such drug discovery campaigns.
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Yamada K, Kuriyama H, Hara T, Murata M, Irie R, Harntaweesup Y, Satake M, Fukuzawa S, Tachibana K. Interaction analysis of a ladder-shaped polycyclic ether and model transmembrane peptides in lipid bilayers by using Förster resonance energy transfer and polarized attenuated total reflection infrared spectroscopy. Bioorg Med Chem 2014; 22:3773-80. [DOI: 10.1016/j.bmc.2014.04.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/21/2014] [Accepted: 04/22/2014] [Indexed: 01/18/2023]
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Abstract
This review covers the isolation, chemical structure, biological activity, structure activity relationships including synthesis of chemical probes, and pharmacological characterization of neuroactive marine natural products; 302 references are cited.
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Affiliation(s)
- Ryuichi Sakai
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan.
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Sakai T, Sugimoto A, Tatematsu H, Mori Y. Divergent synthesis of trans-fused polycyclic ethers by a convergent oxiranyl anion strategy. J Org Chem 2012; 77:11177-91. [PMID: 23214941 DOI: 10.1021/jo302267f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Octacyclic polyethers that correspond to the CDEFGHIJ-ring system of yessotoxin as well as G- and/or I-ring-modified analogues were synthesized in a divergent manner, starting from a common intermediate, using an [X + 2 + Y]-type convergent method. Reaction of a triflate with the oxiranyl anion generated from an epoxy sulfone, followed by ring expansion, allowed for the incorporation of medium-sized ring ethers into the key intermediate. Subsequent acetal formation and reductive etherification afforded various octacycles containing seven- and eight-membered ether rings.
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Affiliation(s)
- Takeo Sakai
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
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Alonso E, Fuwa H, Vale C, Suga Y, Goto T, Konno Y, Sasaki M, LaFerla FM, Vieytes MR, Giménez-Llort L, Botana LM. Design and synthesis of skeletal analogues of gambierol: attenuation of amyloid-β and tau pathology with voltage-gated potassium channel and N-methyl-D-aspartate receptor implications. J Am Chem Soc 2012; 134:7467-79. [PMID: 22475455 DOI: 10.1021/ja300565t] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Gambierol is a potent neurotoxin that belongs to the family of marine polycyclic ether natural products and primarily targets voltage-gated potassium channels (K(v) channels) in excitable membranes. Previous work in the chemistry of marine polycyclic ethers has suggested the critical importance of the full length of polycyclic ether skeleton for potent biological activity. Although we have previously investigated structure-activity relationships (SARs) of the peripheral functionalities of gambierol, it remained unclear whether the whole polycyclic ether skeleton is needed for its cellular activity. In this work, we designed and synthesized two truncated skeletal analogues of gambierol comprising the EFGH- and BCDEFGH-rings of the parent compound, both of which surprisingly showed similar potency to gambierol on voltage-gated potassium channels (K(v)) inhibition. Moreover, we examined the effect of these compounds in an in vitro model of Alzheimer's disease (AD) obtained from triple transgenic (3xTg-AD) mice, which expresses amyloid beta (Aβ) accumulation and tau hyperphosphorylation. In vitro preincubation of the cells with the compounds resulted in significant inhibition of K(+) currents, a reduction in the extra- and intracellular levels of Aβ, and a decrease in the levels of hyperphosphorylated tau. In addition, pretreatment with these compounds reduced the steady-state level of the N-methyl-D-aspartate (NMDA) receptor subunit 2A without affecting the 2B subunit. The involvement of glutamate receptors was further suggested by the blockage of the effect of gambierol on tau hyperphosphorylation by glutamate receptor antagonists. The present study constitutes the first discovery of skeletally simplified, designed polycyclic ethers with potent cellular activity and demonstrates the utility of gambierol and its synthetic analogues as chemical probes for understanding the function of K(v) channels as well as the molecular mechanism of Aβ metabolism modulated by NMDA receptors.
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Affiliation(s)
- Eva Alonso
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain
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Disrupting protein-protein interactions with non-peptidic, small molecule alpha-helix mimetics. Curr Opin Chem Biol 2010; 14:341-6. [PMID: 20430687 DOI: 10.1016/j.cbpa.2010.04.001] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 04/01/2010] [Accepted: 04/05/2010] [Indexed: 11/22/2022]
Abstract
Many biological processes are regulated by protein-protein interactions (PPIs) and as such their misregulation can cause a multitude of diseases. Often the interactions between large proteins are mediated by small protein secondary structural domains, which project a minimum number of specifically arranged residues into the complementary surface of an interacting protein. Nature has the advantage of time, and over time has optimized those secondary structures, such as alpha-helices, beta-sheets and beta-strands, found at the interfaces of PPIs. Inspired by Nature's extensive optimization, chemists have used these secondary structures as templates in the design of small molecules that may act as structural and functional mimics of large rhenylogically organized protein secondary structures. Herein recent applications of the indane, terphenyl, terphenyl-inspired templates, polycyclic ether and benzodiazepinedione scaffolds, as non-peptidic, small molecule alpha-helix mimetics, to disrupt PPIs are detailed.
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Tachibana K, Satake M, Ohtani N, Tsutsumi R, Kuranaga T, Shirai T, L. C. Wright J, G. Baden D. Synthesis of the ABC Ring Fragment of Brevisin, a New Dinoflagellate Polycyclic Ether. HETEROCYCLES 2010. [DOI: 10.3987/com-09-s(s)93] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Oishi T, Torikai K, Hasegawa F. Design and Synthesis of Ladder-Shaped Polyethers and Evaluation of the Interaction with Transmembrane Proteins. J SYN ORG CHEM JPN 2009. [DOI: 10.5059/yukigoseikyokaishi.67.1250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tohru Oishi
- Graduate School of Science, Osaka University
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Kuranaga T, Shirai T, Baden DG, Wright JLC, Satake M, Tachibana K. Total Synthesis and Structural Confirmation of Brevisamide, a New Marine Cyclic Ether Alkaloid from the Dinoflagellate Karenia brevis. Org Lett 2008; 11:217-20. [DOI: 10.1021/ol802426v] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takefumi Kuranaga
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
| | - Tomohiro Shirai
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
| | - Daniel G. Baden
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
| | - Jeffrey L. C. Wright
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
| | - Masayuki Satake
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
| | - Kazuo Tachibana
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Center for Marine Science, University of North Carolina, Wilmington, 5600 Marvin K. Moss Lane, Wilmington, North Carolina 28409
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