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Jin T, Li P, Wang C, Tang X, Yu X, Sun F, Luo L, Ou H, Li G. Jellynolide A, pokepola esters, and sponalisolides from the aquaculture sponge Spongia officinalis L. PHYTOCHEMISTRY 2022; 194:113006. [PMID: 34837765 DOI: 10.1016/j.phytochem.2021.113006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
Jellynolide A, an unreported bicyclic diterpenoid with an unprecedented penta-substituted carbon skeleton which implied an irregular biogenic pathway, together with four pairs of rare phosphate triesters, (±)-pokepola ester B-E, one undescribed related racemic furanoterpenoid, (±)-sponalisolide C, one undescribed furanoterpenoid, (-)-sponalisolide D, and two known (±)-sponalisolide B and dendrolasin carboxylic acid were isolated from the aquaculture Spongia officinalis L. Their structures were elucidated by comprehensive spectroscopic analysis, quantum chemical calculation of NMR parameters, and electronic circular dichroism (ECD). The plausible biosynthetic pathway of jellynolide A was proposed. (±)-Pokepola ester C exhibited significant inhibition against Wnt, HIF1 signaling pathways. (+)-Pokepola ester B and (-)-pokepola ester D showed moderate cytotoxicity activities.
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Affiliation(s)
- Tianyun Jin
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China
| | - Pinglin Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China.
| | - Cili Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China
| | - Xuli Tang
- College of Chemistry and Chemical Engineering, State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Xiaoli Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China
| | - Fengqing Sun
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China
| | - Lianzhong Luo
- Engineering Research Center of Marine Biopharmaceutical Resource, Xiamen Medical College, Xiamen, 361023, People's Republic of China
| | - Huilong Ou
- Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan, 570228, People's Republic of China
| | - Guoqiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy Department, Ocean University of China, Qingdao, 266003, People's Republic of China; Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao, 266235, People's Republic of China.
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Jang D, Choi M, Chen J, Lee C. Enantioselective Total Synthesis of (+)-Garsubellin A. Angew Chem Int Ed Engl 2021; 60:22735-22739. [PMID: 34398517 PMCID: PMC8519110 DOI: 10.1002/anie.202109193] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 08/05/2021] [Indexed: 01/03/2023]
Abstract
Garsubellin A is a meroterpene capable of enhancing the enzyme choline acetyltransferase whose decreased level is believed to play a central role in the symptoms of Alzheimer's disease. Due to the potentially useful biological activity together with the novel bridged and fused cyclic molecular architecture, garsubellin A has garnered substantial synthetic interest, but its absolute stereostructure has been undetermined. We report here the first enantioselective total synthesis of (+)‐garsubellin A. Our synthesis relies on stereoselective fashioning of a cyclohexanone framework and double conjugate addition of 1,2‐ethanedithiol that promotes aldol cyclization to build the bicyclic [3.3.1] skeleton. The twelve‐step, protecting group‐free synthetic route has enabled the syntheses of both the natural (−)‐garsubellin A and its unnatural (+)‐antipode for biological evaluations.
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Affiliation(s)
- Dongseok Jang
- Department of ChemistrySeoul National UniversitySeoul08826Republic of Korea
| | - Minchul Choi
- Department of ChemistrySeoul National UniversitySeoul08826Republic of Korea
| | - Jinglong Chen
- Department of ChemistryPrinceton UniversityPrincetonNew Jersey08540USA
- Current address: College of Materials Science and EngineeringFuzhou UniversityFuzhou350108China
| | - Chulbom Lee
- Department of ChemistrySeoul National UniversitySeoul08826Republic of Korea
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Jang D, Choi M, Chen J, Lee C. Enantioselective Total Synthesis of (+)‐Garsubellin A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dongseok Jang
- Department of Chemistry Seoul National University Seoul 08826 Republic of Korea
| | - Minchul Choi
- Department of Chemistry Seoul National University Seoul 08826 Republic of Korea
| | - Jinglong Chen
- Department of Chemistry Princeton University Princeton New Jersey 08540 USA
- Current address: College of Materials Science and Engineering Fuzhou University Fuzhou 350108 China
| | - Chulbom Lee
- Department of Chemistry Seoul National University Seoul 08826 Republic of Korea
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Abstract
The bicyclo[3.3.1]nonane architecture is a privileged structural motif found in over 1000 natural products with relevance to neurodegenerative disease, bacterial and parasitic infection, and cancer among others. Despite disparate biosynthetic machinery, alkaloid, terpene, and polyketide-producing organisms have all evolved pathways to incorporate this carbocyclic ring system. Natural products of mixed polyketide/terpenoid origins (meroterpenes) are a particularly rich and important source of biologically active bicyclo[3.3.1]nonane-containing molecules. Herein we detail a fully synthetic strategy toward this broad family of targets based on an abiotic annulation/rearrangement strategy resulting in a 10-step total synthesis of garsubellin A, an enhancer of choline acetyltransferase and member of the large family of polycyclic polyprenylated acylphloroglucinols. This work solidifies a strategy for making multiple, diverse meroterpene chemotypes in a programmable assembly process involving a minimal number of chemical transformations.
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Affiliation(s)
- Xingyu Shen
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA, 94702, USA
| | - Chi P Ting
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA, 94702, USA
| | - Gong Xu
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA, 94702, USA
| | - Thomas J Maimone
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA, 94702, USA.
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Brandstätter M, Freis M, Huwyler N, Carreira EM. Total Synthesis of (−)‐Merochlorin A. Angew Chem Int Ed Engl 2019; 58:2490-2494. [DOI: 10.1002/anie.201813090] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Marco Brandstätter
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Manuel Freis
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Nikolas Huwyler
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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Brandstätter M, Freis M, Huwyler N, Carreira EM. Total Synthesis of (−)-Merochlorin A. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marco Brandstätter
- Laboratorium für Organische Chemie, HCI H335; Eidgenössiche Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Manuel Freis
- Laboratorium für Organische Chemie, HCI H335; Eidgenössiche Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Nikolas Huwyler
- Laboratorium für Organische Chemie, HCI H335; Eidgenössiche Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335; Eidgenössiche Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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Yang XW, Grossman RB, Xu G. Research Progress of Polycyclic Polyprenylated Acylphloroglucinols. Chem Rev 2018; 118:3508-3558. [PMID: 29461053 DOI: 10.1021/acs.chemrev.7b00551] [Citation(s) in RCA: 249] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polycyclic polyprenylated acylphloroglucinols (PPAPs) are a class of hybrid natural products sharing the mevalonate/methylerythritol phosphate and polyketide biosynthetic pathways and showing considerable structure and bioactivity diversity. This review discusses the progress of research into the chemistry and biological activity of 421 natural PPAPs in the past 11 years as well as in-depth studies of biological activities and total synthesis of some PPAPs isolated before 2006. We created an online database of all PPAPs known to date at http://www.chem.uky.edu/research/grossman/PPAPs . Two subclasses of biosynthetically related metabolites, spirocyclic PPAPs with octahydrospiro[cyclohexan-1,5'-indene]-2,4,6-trione core and complicated PPAPs produced by intramolecular [4 + 2] cycloadditions of MPAPs, are brought into the PPAP family. Some PPAPs' relative or absolute configurations are reassigned or critically discussed, and the confusing trivial names in PPAPs investigations are clarified. Pharmacologic studies have revealed a new molecular mechanism whereby hyperforin and its derivatives regulate neurotransmitter levels by activating TRPC6 as well as the antitumor mechanism of garcinol and its analogues. The antineoplastic potential of some type B PPAPs such as oblongifolin C and guttiferone K has increased significantly. As a result of the recent appearances of innovative synthetic methods and strategies, the total syntheses of 22 natural PPAPs including hyperforin, garcinol, and plukenetione A have been accomplished.
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Affiliation(s)
- Xing-Wei Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
| | - Robert B Grossman
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506-0055 , United States
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
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Affiliation(s)
- Chi P. Ting
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Thomas J. Maimone
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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Uetake Y, Uwamori M, Nakada M. Enantioselective Approach to Polycyclic Polyprenylated Acylphloroglucinols via Catalytic Asymmetric Intramolecular Cyclopropanation. J Org Chem 2015; 80:1735-45. [DOI: 10.1021/jo5026699] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yuta Uetake
- Department
of Chemistry and Biochemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Masahiro Uwamori
- Department
of Chemistry and Biochemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Masahisa Nakada
- Department
of Chemistry and Biochemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Bhat BA, Maki SL, St Germain EJ, Maity P, Lepore SD. Annulation reactions of allenyl esters: an approach to bicyclic diones and medium-sized rings. J Org Chem 2014; 79:9402-7. [PMID: 25184784 PMCID: PMC4184455 DOI: 10.1021/jo501700c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A flexible approach to construct sterically congested bicyclo-alkenedione frameworks is reported. Under the action of potassium carbonate, α-sulphonyl cycloalkanones are added to functionalized allenyl esters, leading to a lactone intermediate that is subsequently reduced to initiate an intramolecular aldol cyclization to [3.2.1], [3.3.1], and [4.3.1] bicycles. Oxidation then affords bicyclic diones in good three-step yields. Under exceptionally mild conditions, these bicycles are converted to highly functionalized medium-sized rings through a Grob-type fragmentation.
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Affiliation(s)
- Bilal A Bhat
- Medicinal Chemistry Division, Indian Institute of Integrative Medicine (CSIR) , Sanatnagar, Srinagar-190005, India
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