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Takamura H, Hattori K, Ohashi T, Otsu T, Kadota I. Relative stereochemical determination of the C61-C83 fragment of symbiodinolide using a stereodivergent synthetic approach. Org Biomol Chem 2023; 21:8837-8848. [PMID: 37791452 DOI: 10.1039/d3ob01420g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Structural determination is required in the use of marine natural products to create novel drugs and drug leads in medicinal chemistry. Symbiodinolide, which is a polyol marine natural product with a molecular weight of 2860, increases the intracellular Ca2+ concentration and exhibits inhibitory activity against cyclooxygenase-1. Seventy percent of the structure of symbiodinolide has been stereochemically clarified. Herein, we report the elucidation of the relative configuration of the C61-C83 fragment, which is among the remaining thirty percent, using a stereodivergent synthetic strategy. We first assigned the relative configuration of the C61-C74 fragment. Two candidate diastereomers of the C61-C74 fragment were synthesized, and their NMR data were compared with those of the natural product, revealing the relative stereochemistry of this component. We then narrowed down the candidate compounds for the C69-C83 fragment from 16 possible diastereomers by analyzing the NMR data of the natural product, and we thus selected eight candidate diastereomers. Stereodivergent synthesis of the candidates for this fragment and comparison of the NMR data of the natural product and the eight synthetic products resulted in the relative stereostructural clarification of the C69-C83 fragment. These individually determined relative stereochemistries of the C61-C74 and C69-C83 fragments were connected via the common C69-C73 tetrahydropyran moiety of the fragments. Finally, the relative configuration of the C61-C83 fragment of symbiodinolide was determined. The stereodivergent synthetic approach used in this study can be extended to the stereochemical determination of other fragments of symbiodinolide.
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Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Kosuke Hattori
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Takumi Ohashi
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Taichi Otsu
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Isao Kadota
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
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Takamura H, Fujiwara T, Kawakubo Y, Kadota I, Uemura D. Stereoselective Synthesis of the Proposed C79-C104 Fragment of Symbiodinolide. Chemistry 2015; 22:1979-1983. [DOI: 10.1002/chem.201503880] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka Kita-ku Okayama 700-8530 Japan
| | - Takayuki Fujiwara
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka Kita-ku Okayama 700-8530 Japan
| | - Yohei Kawakubo
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka Kita-ku Okayama 700-8530 Japan
| | - Isao Kadota
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka Kita-ku Okayama 700-8530 Japan
| | - Daisuke Uemura
- Department of Chemistry; Faculty of Science; Kanagawa University; 2946 Tsuchiya Hiratsuka 259-1293 Japan
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Takamura H, Wada H, Ogino M, Kikuchi T, Kadota I, Uemura D. Stereodivergent Synthesis and Relative Stereostructure of the C1–C13 Fragment of Symbiodinolide. J Org Chem 2015; 80:3111-23. [DOI: 10.1021/acs.joc.5b00027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroyoshi Takamura
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroko Wada
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Mao Ogino
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takahiro Kikuchi
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Isao Kadota
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Daisuke Uemura
- Department
of Chemistry, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
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Takamura H, Kadota I, Uemura D. Synthetic Study of the Polyol Natural Product Symbiodinolide toward the Structural Elucidation. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Takamura H, Fujiwara T, Kadota I, Uemura D. Stereoselective synthesis of the C79-C97 fragment of symbiodinolide. Beilstein J Org Chem 2013; 9:1931-5. [PMID: 24204403 PMCID: PMC3817580 DOI: 10.3762/bjoc.9.228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/03/2013] [Indexed: 11/27/2022] Open
Abstract
Symbiodinolide is a polyol marine natural product with a molecular weight of 2860. Herein, a streamlined synthesis of the C79–C97 fragment of symbiodinolide is described. In the synthetic route, a spiroacetalization, a Julia–Kocienski olefination, and a Sharpless asymmetric dihydroxylation were utilized as the key transformations.
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Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Abstract
Toxic substances that occur in nature have various structures and functions. In fact, the very novelty of their structures and functions sometimes extends far beyond the realm of human imagination, and the capabilities of these compounds are still largely untapped despite the major advances of modern science. In this report we focus on the most recent developments in this field, with a particular emphasis on natural venoms, marine sunscreen, and marine huge molecules.
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Affiliation(s)
- Daisuke Uemura
- 1Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya 2946, Hiratsuka, Kanagawa 259-1293, Japan
| | - Chunguang Han
- 2Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Novriyandi Hanif
- 2Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Toshiyasu Inuzuka
- 3Life Science Research Center, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Norihito Maru
- 1Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya 2946, Hiratsuka, Kanagawa 259-1293, Japan
| | - Hirokazu Arimoto
- 4Graduate School of Life Science, Tohoku University, Katahira 2-1-1, Sendai, 981-8555, Japan
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Amdigenol A, a long carbon-backbone polyol compound, produced by the marine dinoflagellate Amphidinium sp. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vlašaná K, Hrdina R, Valterová I, Kotora M. Enantioselective Allylation of Aldehydes Catalyzed by Diastereoisomeric Bis(tetrahydroisoquinoline) N,N′-Dioxides. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001219] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Stereocontrolled synthesis and structural confirmation of the C14–C24 degraded fragment of symbiodinolide. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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