1
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Papidocha SM, Bulthaupt HH, Carreira EM. Synthesis of Neocaesalpin A, AA, and Nominal Neocaesalpin K. Angew Chem Int Ed Engl 2023; 62:e202310149. [PMID: 37681486 DOI: 10.1002/anie.202310149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/09/2023]
Abstract
The first total synthesis of heavily oxidized cassane-type diterpenoid neocaesalpin A (1) is disclosed. At the heart of the synthesis lies an intermolecular Diels-Alder reaction that rapidly assembles the target framework from commercial materials. A carefully orchestrated sequence of oxidations secured the desired oxygenation pattern. Late-stage release of the characteristic butenolide occurred through a novel mercury(II)-mediated furan oxidation. Successful extension of the route allowed preparation of neocaesalpin AA (2) as well as nominal neocaesalpin K (3) and suggested structural revision of neocaesalpin K, leading to the hypothesis that the two are likely the same natural product with correct assignment as 2.
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Affiliation(s)
- Sven M Papidocha
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Hendrik H Bulthaupt
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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2
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Canko A, Athanassopoulou GD, Psycharis V, Raptopoulou CP, Herniman JM, Mouchtouris V, Foscolos AS, Couladouros EA, Vidali VP. First total synthesis of type II abyssomicins: (±)-abyssomicin 2 and (±)-neoabyssomicin B. Org Biomol Chem 2023; 21:3761-3765. [PMID: 37083981 DOI: 10.1039/d3ob00476g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The intramolecular Diels-Alder reaction (IMDA) of a butenolide derivative, as an entry to the type II abyssomicin scaffold, and the total synthesis of (±)-abyssomicin 2 and (±)-neoabyssomicin B are reported for the first time. A facile route to the IMDA precursor, the formation of a type I intermediate and two paths to (±)-neoabyssomicin B are also discussed.
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Affiliation(s)
- Aleksander Canko
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Ag. Paraskevi, Athens, Greece.
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | | | - Vassilis Psycharis
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Ag. Paraskevi, Athens, Greece.
| | - Catherine P Raptopoulou
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Ag. Paraskevi, Athens, Greece.
| | - Julie M Herniman
- Faculty of Engineering and Physical Sciences, School of Chemistry, University of Southampton, Highfield, Southampton, UK
| | - Vasileios Mouchtouris
- Nano-Science Center and Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Angeliki Sofia Foscolos
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Ag. Paraskevi, Athens, Greece.
| | - Elias A Couladouros
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | - Veroniki P Vidali
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Ag. Paraskevi, Athens, Greece.
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3
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Zentar H, Jannus F, Gutierrez P, Medina-O’Donnell M, Lupiáñez JA, Reyes-Zurita FJ, Alvarez-Manzaneda E, Chahboun R. Semisynthesis and Evaluation of Anti-Inflammatory Activity of the Cassane-Type Diterpenoid Taepeenin F and of Some Synthetic Intermediates. JOURNAL OF NATURAL PRODUCTS 2022; 85:2372-2384. [PMID: 36215157 PMCID: PMC9623576 DOI: 10.1021/acs.jnatprod.2c00578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Indexed: 06/16/2023]
Abstract
A new strategy for the semisynthesis of the aromatic cassane-type diterpene taepeenin F (6) is reported. The introduction of the methyl group at C-14, characteristic of the target compound, was achieved via dienone 13, easily prepared from abietic acid (10), the major compound in renewable rosin. Biological assays of selected compounds are reported. The antiproliferative activity against HT29, B16-F10, and HepG2 tumor cell lines has been investigated. Salicylaldehyde 21 was the most active compound (IC50 = 7.72 μM). Products 16 and 21 displayed apoptotic effects in B16-F10 cells, with total apoptosis rates of 46 and 38.4%, respectively. This apoptotic process involves a significant arrest of the B16-F10 cell cycle, blocking the G0/G1 phase. Dienone 16 did not cause any loss of the mitochondrial membrane potential (MMP), while salicylaldehyde 21 caused a partial loss of the MMP. The anti-inflammatory activity of the selected compounds was investigated with the LPS-stimulated RAW 264.7 macrophages. All compounds showed potent NO inhibition, with percentages between 80 and 99% at subcytotoxic concentrations. Dienone 16 inhibited LPS-induced differentiation of RAW 264.7 cells, by increasing the proportion of cells in the S phase. In addition, salicylaldehyde 21 had effects on the cell cycle, recovering the cells from the G0/G1 full arrest produced in response to LPS action.
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Affiliation(s)
- Houda Zentar
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biotecnología, Universidad de
Granada, 18071 Granada, Spain
| | - Fatin Jannus
- Departamento
de Bioquímica y Biología Molecular I, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Pilar Gutierrez
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biotecnología, Universidad de
Granada, 18071 Granada, Spain
| | - Marta Medina-O’Donnell
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biotecnología, Universidad de
Granada, 18071 Granada, Spain
| | - José Antonio Lupiáñez
- Departamento
de Bioquímica y Biología Molecular I, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Fernando J. Reyes-Zurita
- Departamento
de Bioquímica y Biología Molecular I, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Enrique Alvarez-Manzaneda
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biotecnología, Universidad de
Granada, 18071 Granada, Spain
| | - Rachid Chahboun
- Departamento
de Química Orgánica, Facultad de Ciencias, Instituto
de Biotecnología, Universidad de
Granada, 18071 Granada, Spain
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4
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Pitsinos EN, Mavridis I, Tzouma E, Vidali VP. Enantioselective Synthesis of Cassane-Type Furanoditerpenoids: Total Synthesis of Sucutiniranes C and D. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Emmanuel N. Pitsinos
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Ioannis Mavridis
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Eirini Tzouma
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Veroniki P. Vidali
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
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5
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Vidali VP, Canko A, Peroulias AD, Georgas ET, Bouzas E, Herniman JM, Couladouros EA. An Improved Biomimetic Formal Synthesis of Abyssomicin C and atrop
-Abyssomicin C. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000671] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Veroniki P. Vidali
- NCSR "Demokritos"; Institute of Nanoscience & Nanotechnology; Patr. Grigoriou & Neapoleos 25 153 41 Athens Greece
| | - Aleksander Canko
- NCSR "Demokritos"; Institute of Nanoscience & Nanotechnology; Patr. Grigoriou & Neapoleos 25 153 41 Athens Greece
- Department of Food Science and Human Nutrition; Agricultural University of Athens; Athens Greece
| | - Angelos D. Peroulias
- School of Chemistry; University of Southampton; 17 1BJ Southampton SO United Kingdom
| | - Evangelos T. Georgas
- NCSR "Demokritos"; Institute of Nanoscience & Nanotechnology; Patr. Grigoriou & Neapoleos 25 153 41 Athens Greece
- Department of Chemistry; University of Athens; Athens Greece
| | - Emmanuel Bouzas
- Department of Food Science and Human Nutrition; Agricultural University of Athens; Athens Greece
| | - Julie M. Herniman
- School of Chemistry; University of Southampton; 17 1BJ Southampton SO United Kingdom
| | - Elias A. Couladouros
- Department of Food Science and Human Nutrition; Agricultural University of Athens; Athens Greece
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6
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology 510640 Guangzhou China
- State Key Laboratory of Elemento-Organic ChemistryNankai University 300071 Tianjing China
- Singfar Laboratories 510670 Guangzhou China
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7
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Zhang L, Cao T, Jiang H, Zhu S. Deconstructive Reorganization: De Novo Synthesis of Hydroxylated Benzofuran. Angew Chem Int Ed Engl 2020; 59:4670-4677. [PMID: 31961991 DOI: 10.1002/anie.201915212] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/18/2020] [Indexed: 12/26/2022]
Abstract
An unprecedented deconstructive reorganization strategy for the de novo synthesis of hydroxylated benzofurans from kojic acid- or maltol-derived alkynes is reported. In this reaction, both the benzene and furan rings were simultaneously constructed, whereas the pyrone moiety of the kojic acid or maltol was deconstructed and then reorganized into the benzene ring as a six-carbon component. Through this strategy, at least one free hydroxyl group was introduced into the benzene ring in a substitution-pattern tunable fashion without protection-deprotection and redox adjustment. With this method, a large number of hydroxylated benzofuran derivatives with different substitution-patterns have been prepared efficiently. This methodology has also been shown as the key step in a collective total synthesis of hydroxylated benzofuran-containing natural products (11 examples).
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Affiliation(s)
- Ling Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 300071, Tianjing, China.,Singfar Laboratories, 510670, Guangzhou, China
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8
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Wang J, Ma D. 6‐Methylenebicyclo[3.2.1]oct‐1‐en‐3‐one: A Twisted Olefin as Diels–Alder Dienophile for Expedited Syntheses of Four Kaurane Diterpenoids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Junjie Wang
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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9
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Wang J, Ma D. 6‐Methylenebicyclo[3.2.1]oct‐1‐en‐3‐one: A Twisted Olefin as Diels–Alder Dienophile for Expedited Syntheses of Four Kaurane Diterpenoids. Angew Chem Int Ed Engl 2019; 58:15731-15735. [DOI: 10.1002/anie.201909349] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/20/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Junjie Wang
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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10
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Zentar H, Arias F, Haidour A, Alvarez-Manzaneda R, Chahboun R, Alvarez-Manzaneda E. Protecting-Group-Free Synthesis of Cassane-Type Furan Diterpenes via a Decarboxylative Dienone–Phenol Rearrangement. Org Lett 2018; 20:7007-7010. [DOI: 10.1021/acs.orglett.8b02867] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Houda Zentar
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Fabio Arias
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Ali Haidour
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Ramón Alvarez-Manzaneda
- Àrea de Química Orgánica, Departamento de Química y Física, Universidad de Almería, 04120 Almería, Spain
| | - Rachid Chahboun
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Enrique Alvarez-Manzaneda
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
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11
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Antoniou A, Chatzopoulou M, Bantzi M, Athanassopoulos CM, Giannis A, Pitsinos EN. Identification of Gli-mediated transcription inhibitors through synthesis and evaluation of taepeenin D analogues. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00354k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abietic acid derivatives related to taepeenin D were identified as new Hh pathway inhibitors that operate downstream of Smo.
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Affiliation(s)
- A. Antoniou
- Natural Products Synthesis & Bioorganic Chemistry Laboratory
- I.N.N
- NCSR “Demokritos”
- Athens
- Greece
| | - M. Chatzopoulou
- Natural Products Synthesis & Bioorganic Chemistry Laboratory
- I.N.N
- NCSR “Demokritos”
- Athens
- Greece
| | - M. Bantzi
- Universität Leipzig, Fakultät für Chemie und Mineralogie
- Institut für Organische Chemie
- 04103 Leipzig
- Germany
| | - C. M. Athanassopoulos
- Laboratory of Synthetic Organic Chemistry
- Department of Chemistry
- University of Patras
- Patras
- Greece
| | - A. Giannis
- Universität Leipzig, Fakultät für Chemie und Mineralogie
- Institut für Organische Chemie
- 04103 Leipzig
- Germany
| | - E. N. Pitsinos
- Natural Products Synthesis & Bioorganic Chemistry Laboratory
- I.N.N
- NCSR “Demokritos”
- Athens
- Greece
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