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Ando Y, Ogawa D, Ohmori K, Suzuki K. Enantioselective Total Syntheses of Preussomerins: Control of Spiroacetal Stereogenicity by Photochemical Reaction of a Naphthoquinone through 1,6-Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2023; 62:e202213682. [PMID: 36446739 PMCID: PMC10107447 DOI: 10.1002/anie.202213682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/16/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
We report the enantioselective total syntheses of preussomerins EG1 , EG2 , and EG3 . The key transformation is a stereospecific photochemical reaction involving 1,6-hydrogen atom transfer to achieve retentive replacement of a C-H with a C-O bond, enabling otherwise-difficult control of the spiroacetal stereogenic center.
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Affiliation(s)
- Yoshio Ando
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Daichi Ogawa
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Ken Ohmori
- 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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2
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Xu L, Ma H, An X, Li Y, Zhang Q, Liu X, Wang M. Total synthesis, structure revision and cytotoxic activity of Sch 53825 and its derivatives. RSC Adv 2022; 12:17629-17636. [PMID: 35765427 PMCID: PMC9194939 DOI: 10.1039/d2ra02898k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 06/01/2022] [Indexed: 11/25/2022] Open
Abstract
The first total synthesis of Sch 53825 (14) was achieved in 12 steps from 5-hydroxy-1-tetralone in 16% overall yield through N-benzyl cinchoninium chloride-catalyzed asymmetric epoxidation and a Mitsunobu reaction as the key steps. On this basis, the synthesis of palmarumycin B6 was improved using the same raw material with 6 steps and 32% overall yield. Also, three new analogues with two chlorine atoms were synthesized. Their structures were characterized by 1H, 13C NMR, HR-ESI-MS and X-ray diffraction data. The structure of natural Sch 53825 was revised as an epimer of compound 1 with the anti-hydroxy epoxide at C-4. Their cytotoxic activities against several tumor cell lines (HCT116, U251, BGC823, Huh-7 and PC9) showed that compound 11 exhibited excellent cytotoxicity against above mentioned cancer cell lines with IC50 < 0.5 μM. The first total synthesis of Sch 53825 (14) was achieved in 12 steps from 5-hydroxy-1-tetralone in 16% overall yield through N-benzyl cinchoninium chloride-catalyzed asymmetric epoxidation and a Mitsunobu reaction as the key steps.![]()
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Affiliation(s)
- Leichuan Xu
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Haoyun Ma
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Xinkun An
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Yihao Li
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Qian Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Xinlei Liu
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Mingan Wang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
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Secondary Metabolites of Lasiodiplodia theobromae: Distribution, Chemical Diversity, Bioactivity, and Implications of Their Occurrence. Toxins (Basel) 2020; 12:toxins12070457. [PMID: 32709023 PMCID: PMC7405015 DOI: 10.3390/toxins12070457] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/09/2020] [Accepted: 07/14/2020] [Indexed: 11/22/2022] Open
Abstract
Lasiodiplodia theobromae is a plant pathogenic fungus from the family Botryosphaeriaceae that is commonly found in tropical and subtropical regions. It has been associated with many hosts, causing diverse diseases and being responsible for serious damages on economically important crops. A diverse array of bioactive low molecular weight compounds has been described as being produced by L. theobromae cultures. In this review, the existing literature on secondary metabolites of L. theobromae, their bioactivity, and the implications of their occurrence are compiled. Moreover, the effects of abiotic factors (e.g., temperature, nutrient availability) on secondary metabolites production are highlighted, and possible avenues for future research are presented. Currently, a total of 134 chemically defined compounds belonging to the classes of secondary metabolites and fatty acids have been reported from over 30 L. theobromae isolates. Compounds reported include cyclohexenes and cyclohexenones, indoles, jasmonates, lactones, melleins, phenols, and others. Most of the existing bioactivity studies of L. theobromae metabolites have assessed their potential phytotoxic, cytotoxic, and antimicrobial activities. In fact, its host adaptability and its ability to cause diseases in plants as well as in humans may be related to the capacity to produce bioactive compounds directly involved in host–fungus interactions.
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Vyasamudri S, Yang DY. Light/inductive effect induced isomerization of chromeno-5-methyl-2,6,9-trioxabicyclo[3.3.1]nonadienes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02288h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An efficient rearrangement of coumarin-based trioxabicycles and the effect of UV light and electron-withdrawing substituents on this transformation are reported.
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Affiliation(s)
| | - Ding-Yah Yang
- Department of Chemistry
- Tunghai University
- Taiwan
- Graduate Program for Biomedical and Materials Science
- Tunghai University
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Heravi MM, Zadsirjan V, Saedi P, Momeni T. Applications of Friedel-Crafts reactions in total synthesis of natural products. RSC Adv 2018; 8:40061-40163. [PMID: 35558228 PMCID: PMC9091380 DOI: 10.1039/c8ra07325b] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/03/2018] [Indexed: 12/17/2022] Open
Abstract
Over the years, Friedel-Crafts (FC) reactions have been acknowledged as the most useful and powerful synthetic tools for the construction of a special kind of carbon-carbon bond involving an aromatic moiety. Its stoichiometric and, more recently, its catalytic procedures have extensively been studied. This reaction in recent years has frequently been used as a key step (steps) in the total synthesis of natural products and targeted complex bioactive molecules. In this review, we try to underscore the applications of intermolecular and intramolecular FC reactions in the total syntheses of natural products and complex molecules, exhibiting diverse biological properties.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Pegah Saedi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Tayebeh Momeni
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
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Serrano R, González-Menéndez V, Rodríguez L, Martín J, Tormo JR, Genilloud O. Co-culturing of Fungal Strains Against Botrytis cinerea as a Model for the Induction of Chemical Diversity and Therapeutic Agents. Front Microbiol 2017; 8:649. [PMID: 28469610 PMCID: PMC5396503 DOI: 10.3389/fmicb.2017.00649] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 03/29/2017] [Indexed: 01/10/2023] Open
Abstract
New fungal SMs (SMs) have been successfully described to be produced by means of in vitro-simulated microbial community interactions. Co-culturing of fungi has proved to be an efficient way to induce cell–cell interactions that can promote the activation of cryptic pathways, frequently silent when the strains are grown in laboratory conditions. Filamentous fungi represent one of the most diverse microbial groups known to produce bioactive natural products. Triggering the production of novel antifungal compounds in fungi could respond to the current needs to fight health compromising pathogens and provide new therapeutic solutions. In this study, we have selected the fungus Botrytis cinerea as a model to establish microbial interactions with a large set of fungal strains related to ecosystems where they can coexist with this phytopathogen, and to generate a collection of extracts, obtained from their antagonic microbial interactions and potentially containing new bioactive compounds. The antifungal specificity of the extracts containing compounds induced after B. cinerea interaction was determined against two human fungal pathogens (Candida albicans and Aspergillus fumigatus) and three phytopathogens (Colletotrichum acutatum, Fusarium proliferatum, and Magnaporthe grisea). In addition, their cytotoxicity was also evaluated against the human hepatocellular carcinoma cell line (HepG2). We have identified by LC-MS the production of a wide variety of known compounds induced from these fungal interactions, as well as novel molecules that support the potential of this approach to generate new chemical diversity and possible new therapeutic agents.
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Affiliation(s)
- Rachel Serrano
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
| | - Víctor González-Menéndez
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
| | - Lorena Rodríguez
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
| | - Jesús Martín
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
| | - José R Tormo
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
| | - Olga Genilloud
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en AndalucíaGranada, Spain
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Jaggavarapu SR, Kamalakaran AS, Gayatri G, Shukla M, Dorai K, Gaddamanugu G. Facile access to novel chromeno-2,6,9-trioxabicyclo[3.3.1]nonadienes via tandem nucleophilic substitution and [4+2] hetero Diels–Alder reaction: experimental and theoretical study. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Duschek A, Kirsch SF. 2-Iodoxybenzoic Acid-A Simple Oxidant with a Dazzling Array of Potential Applications. Angew Chem Int Ed Engl 2011; 50:1524-52. [DOI: 10.1002/anie.201000873] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Indexed: 12/26/2022]
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Duschek A, Kirsch SF. 2-Iodoxybenzoesäure - ein einfaches Oxidationsmittel mit einer Vielfalt an Anwendungsmöglichkeiten. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201000873] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Cai YS, Guo YW, Krohn K. Structure, bioactivities, biosynthetic relationships and chemical synthesis of the spirodioxynaphthalenes. Nat Prod Rep 2010; 27:1840-70. [PMID: 21038061 DOI: 10.1039/c0np00031k] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- You-Sheng Cai
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Rd. 555, Shanghai, 201203, People's Republic of China
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Miyashita K, Imanishi T. Syntheses of Natural Products Having an Epoxyquinone Structure. Chem Rev 2005; 105:4515-36. [PMID: 16351052 DOI: 10.1021/cr040613k] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuyuki Miyashita
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
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Quesada E, Stockley M, Ragot JP, Prime ME, Whitwood AC, Taylor RJK. A versatile, non-biomimetic route to the preussomerins: syntheses of (+/-)-preussomerins F, K and L. Org Biomol Chem 2004; 2:2483-95. [PMID: 15326529 DOI: 10.1039/b407895k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first total syntheses of the title fungal metabolites preussomerins F, K and L are described and their structures confirmed thereby. The syntheses were achieved following a versatile, unified, non-biomimetic approach, which is easily extendable to prepare other known and novel members of this family. Key steps include the functionalisation of a 2-arylacetal anion, tandem one-pot Friedel-Crafts cyclisation-deprotection, regioselective substrate-directable hydrogenation and reductive-opening of epoxides.
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Affiliation(s)
- Ernesto Quesada
- Department of Chemistry, University of York, Heslington, York, UKYO10 5DD
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