1
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Cocco E, Iapadre D, Brusa A, Allegrini P, Thomas SP, Pesciaioli F, Carlone A. Piers-Rubinsztajn reaction to unlock an 8-step synthesis of 7-hydroxy cannabidiol. RSC Adv 2024; 14:2741-2744. [PMID: 38229717 PMCID: PMC10790624 DOI: 10.1039/d3ra08392f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/08/2024] [Indexed: 01/18/2024] Open
Abstract
A scalable synthesis of 7-hydroxy cannabidiol (7-OH CBD), a primary metabolite of (-)-cannabidiol (CBD), is highly desirable, from an industrial point of view, to enable future clinical trials. A Piers-Rubinsztajn reaction was key to enable a mild deprotection and a concise synthesis of 7-OH CBD from commercially available CBD, in 31% overall yield.
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Affiliation(s)
- Emanuele Cocco
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila via Vetoio 67100 L'Aquila Italy https://www.carloneresearch.eu/
| | - Debora Iapadre
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila via Vetoio 67100 L'Aquila Italy https://www.carloneresearch.eu/
| | - Alessandro Brusa
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila via Vetoio 67100 L'Aquila Italy https://www.carloneresearch.eu/
| | | | - Stephen P Thomas
- EaStCHEM School of Chemistry, The University of Edinburgh Edinburgh EH9 3FJ UK
| | - Fabio Pesciaioli
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila via Vetoio 67100 L'Aquila Italy https://www.carloneresearch.eu/
| | - Armando Carlone
- Department of Physical and Chemical Sciences, Università degli Studi dell'Aquila via Vetoio 67100 L'Aquila Italy https://www.carloneresearch.eu/
- INSTM, Consorzio Nazionale per la Scienza e Tecnologia dei Materiali RU L'Aquila Italy
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2
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Glycoconjugation of Quinoline Derivatives Using the C-6 Position in Sugars as a Strategy for Improving the Selectivity and Cytotoxicity of Functionalized Compounds. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206918. [PMID: 36296513 PMCID: PMC9607644 DOI: 10.3390/molecules27206918] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 11/19/2022]
Abstract
Based on the Warburg effect and the increased demand for glucose by tumor cells, a targeted drug delivery strategy was developed. A series of new glycoconjugates with increased ability to interact with GLUT transporters, responsible for the transport of sugars to cancer cells, were synthesized. Glycoconjugation was performed using the C-6 position in the sugar unit, as the least involved in the formation of hydrogen bonds with various aminoacids residues of the transporter. The carbohydrate moiety was connected with the 8-hydroxyquinoline scaffold via a 1,2,3-triazole linker. For the obtained compounds, several in vitro biological tests were performed using HCT-116 and MCF-7 cancer cells as well as NHDF-Neo healthy cells. The highest cytotoxicity of both cancer cell lines in the MTT test was noted for glycoconjugates in which the triazole-quinoline was attached through the triazole nitrogen atom to the d-glucose unit directly to the carbon at the C-6 position. These compounds were more selective than the analogous glycoconjugates formed by the C-1 anomeric position of d-glucose. Experiments with an EDG inhibitor have shown that GLUTs can be involved in the transport of glycoconjugates. The results of apoptosis and cell cycle analyses by flow cytometry confirmed that the new type of glycoconjugates shows pro-apoptotic properties, without significantly affecting changes in the distribution of the cell cycle. Moreover, glycoconjugates were able to decrease the clonogenic potential of cancer cells, inhibit the migration capacity of cells and intercalate with DNA.
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3
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Asakawa R, Fuchiyama K, Ishii Y, Hosaka K, Kobayashi A, Shimazaki K, Nagasawa J, Tsuchida S, Ushida K, Matsubayashi M, Furuyama Y, Ohgane K, Kuramochi K. Synthesis and Cytotoxic Activities of 8- and 6-Demethyleucalyptins. Biosci Biotechnol Biochem 2022; 86:1200-1206. [PMID: 35776954 DOI: 10.1093/bbb/zbac105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/24/2022] [Indexed: 11/13/2022]
Abstract
Secondary metabolites in plants influence the health of herbivores such as Japanese rock ptarmigans that feed on the leaves and fruits of alpine plants. Thus, it is important to understand the secondary metabolites of alpine plants and their biological activities for conserving Japanese rock ptarmigans. We isolated C-methylflavone from the leaves of Kalmia procumbens, on which Japanese rock ptarmigans feed. Although its structure was deduced to be 8-demethyleucalyptin by comparing its NMR data with the reported ones, the possibility that the isolated compound is 6-demethyleucalyptin cannot be ruled out. Thus, both isomers were synthesized. The isolated compound was unambiguously determined to be 8-demethyleucalyptin by comparing its NMR data with those of the synthetic ones. Cytotoxic evaluation of 8- and 6-demethyleucalyptins revealed that only the former showed cytotoxicity against HCT116 and MRC-5 cells. The present study provides not only easy access to 8- and 6-demethyleucalyptins, but also their biological information.
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Affiliation(s)
- Ryuki Asakawa
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Kanta Fuchiyama
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Yunosuke Ishii
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Keisuke Hosaka
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Atsushi Kobayashi
- Shin-etsu Nature Conservation Office, Environmental Ministry Japan, 1108 Asahi-cho, Nagano, Japan
| | - Kei Shimazaki
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Junki Nagasawa
- Department of Veterinary Immunology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, 1-58 Rinku-oraikita, Izumisano, Osaka, Japan
| | - Sayaka Tsuchida
- College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, Japan
| | - Kazunari Ushida
- College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, Japan
| | - Makoto Matsubayashi
- Department of Veterinary Immunology, Graduate School of Veterinary Sciences, Osaka Metropolitan University, 1-58 Rinku-oraikita, Izumisano, Osaka, Japan.,Department of Veterinary Parasitology, Faculty of Veterinary Medicine, Airlangga University, Mulyorejo, Surabaya, 60115, Indonesia
| | - Yuuki Furuyama
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
| | - Kenji Ohgane
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan.,Department of Chemistry, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, Japan
| | - Kouji Kuramochi
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
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4
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Novel flavonoid hybrids as potent antiviral agents against hepatitis A: Design, synthesis and biological evaluation. Eur J Med Chem 2022; 238:114452. [PMID: 35597006 DOI: 10.1016/j.ejmech.2022.114452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/30/2022] [Accepted: 05/06/2022] [Indexed: 11/21/2022]
Abstract
Two series of flavonoid hybrids, totaling 42 compounds, were designed, synthesized and evaluated to develop antiviral compounds effective against hepatitis A virus (HAV). A recombinant viral screening system revealed that most of the synthesized derivatives exhibited significant anti-HAV activity, and compounds B2, B3, B5 and B27 were identified as potential inhibitors of HAV. Post-treatment of cells with B2, B3, B5 and B27 after HAV infection strongly suppressed HAV infection, whereas pretreatment or simultaneous treatment were ineffective. Furthermore, these four compounds significantly inhibited HAV (HM175/18f strain) production in a dose-dependent manner. Analyses using HAV subgenomic replicon systems indicated that these compounds specifically inhibit HAV RNA replication. More importantly, the most potent compounds B2 and B27 also showed clear inhibitory effects on two other HAV strains, KRM031 and TKM005, which also isolated from clinical patients. Our study is the first to report these newly designed flavonoid hybrids as lead compounds for the development of novel anti-HAV drugs.
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5
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Abstract
Natural products are very attractive for development of medicine. Their structure and bioactivities are often beyond human knowledge and imagination. We have developed isolation methods for target protein-oriented natural products so as quickly to discover bioactive compounds from natural resources. This review summarizes our recent results including protein beads methods for neural stem cells differentiation activators and new cancer drug candidates. Syntheses of isolated compounds are described. We also developed protein plate method for identification of protein-protein interaction inhibitors. Because protein binding ability is tightly related to bioactivity, protein-based natural products isolation is a powerful means to find new candidate medicines.
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6
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Arai MA, Ishibashi M. Target Protein-Oriented Isolations for Chemical Biology based on Natural Products. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Midori A. Arai
- Department of Biosciences & Informatics, Faculty of Science and Technology, Keio University
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7
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Khodzhaieva RS, Gladkov ES, Kyrychenko A, Roshal AD. Progress and Achievements in Glycosylation of Flavonoids. Front Chem 2021; 9:637994. [PMID: 33869141 PMCID: PMC8044360 DOI: 10.3389/fchem.2021.637994] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/17/2021] [Indexed: 11/30/2022] Open
Abstract
In recent years, the chemistry of flavonoid glycosylation has undergone significant developments. This mini-review is devoted to summarizing existing strategies and methods for glycosylation of natural and synthetic flavonoids. Herein we overviewed the reaction conditions of flavonoid glycosylation depending on the position of hydroxyl groups in a parent molecule, the degree of it conjugation with the π-system, the presence of steric factors, the formation of intramolecular hydrogen bonds, etc. Especial attention was given to the choice of the glycosyl donor moiety, which has a significant effect on the yield of the final glycosidated products. Finally, a general strategy for regioselective glycosylation of flavonoids containing several hydroxyl groups is outlined.
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Affiliation(s)
| | | | - Alexander Kyrychenko
- Institute of Chemistry, V. N. Karazin Kharkiv National University, Kharkiv, Ukraine
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8
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Puranik NV, Swami S, Misar AV, Mamgain R, Gulawani SS, Dhiman, Sarkar, Srivastava P. The first synthesis of podocarflavone A and its analogs and evaluation of their antimycobacterial potential against Mycobacterium tuberculosis with the support of virtual screening. Nat Prod Res 2021; 36:3879-3886. [PMID: 33663286 DOI: 10.1080/14786419.2021.1893317] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The first synthetic route developed for Podocarflavone A reported from Podocarpus macrophyllus and its analogs in 7 steps. Computational analysis for binding with the pantothenate kinase (3AVO) of Mycobacterium tuberculosis showed their docking score (ds) in the range of -8.9 to -9.3 Kcal/mol. MD simulations delineated the stability of the protein-ligand complexes in the TIP3P model. MMGBSA and MMPBSA values of 8d were -42.46 Kcal/mol and -14.58 Kcal/mol, respectively. Further in-vitro antitubercular screening of compounds 8a, 8d, and 8e against M. tuberculosis H37Ra using XRMA protocol exhibited promising antimycobacterial activity with IC50 values 21.82 µg/mL, 15.55 µg/mL, and 16.56 µg/mL, respectively. Compounds 8a, 8d, and 8e showed antibacterial activity with IC50 values 41.56 µg/mL, 24.72 µg/mL, and 72.45 µg/mL respectively against the Staphylococcus aureus. 8a and 8d showed inhibition with IC50 values 39.6 µg/mL and 27.64 µg/mL, respectively, against Bacillus subtilis. The present study could help in the further development of lead molecules against tuberculosis.
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Affiliation(s)
- Ninad V Puranik
- Bioprospecting Group, Agharkar Research Institute, Pune, Maharashtra, India.,Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Sagar Swami
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Combi-Chem Bio-Resource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Ashwini V Misar
- Bioprospecting Group, Agharkar Research Institute, Pune, Maharashtra, India
| | - Ritu Mamgain
- Bioprospecting Group, Agharkar Research Institute, Pune, Maharashtra, India
| | | | | | - Sarkar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Combi-Chem Bio-Resource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Pratibha Srivastava
- Bioprospecting Group, Agharkar Research Institute, Pune, Maharashtra, India.,Savitribai Phule Pune University, Pune, Maharashtra, India
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9
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Structure-Activity Relationships of Baicalein and its Analogs as Novel TSLP Inhibitors. Sci Rep 2019; 9:8762. [PMID: 31217492 PMCID: PMC6584507 DOI: 10.1038/s41598-019-44853-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 05/24/2019] [Indexed: 12/13/2022] Open
Abstract
Thymic stromal lymphopoietin (TSLP) plays an important role in the differentiation and proliferation of Th2 cells, resulting in eosinophilic inflammation and numerous allergic diseases. Baicalein (1), a major component of Scutellaria baicalensis, was found to be the first small molecule to block TSLP signaling pathways. It inhibited effectively eosinophil infiltration in house dust mite-induced and ovalbumin-challenged mouse models. Structure-activity relationship studies identified compound 11a, a biphenyl flavanone analog, as a novel human TSLP inhibitor for the discovery and development of new anti-allergic drugs.
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10
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Ishibashi M. Screening for natural products that affect Wnt signaling activity. J Nat Med 2019; 73:697-705. [PMID: 31147959 PMCID: PMC6713684 DOI: 10.1007/s11418-019-01320-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/07/2019] [Indexed: 11/27/2022]
Abstract
Wnt signaling has been implicated in numerous aspects of development, cell biology, and physiology. When aberrantly activated, Wnt signaling can also lead to the formation of tumors. Thus, Wnt signaling is an attractive target for cancer therapy. Based on our screening program targeting Wnt signaling activity using a cell-based luciferase screening system assessing TCF/β-catenin transcriptional activity, we isolated a series of terpenoids and heterocyclic aromatic compounds that affect the Wnt signaling pathway at different points. Here, we describe our recent results in screening for natural products that inhibit or activate Wnt signaling.
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Affiliation(s)
- Masami Ishibashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8675, Japan.
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11
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Gavel M, Courant T, Joosten AYP, Lecourt T. Regio- and Chemoselective Deprotection of Primary Acetates by Zirconium Hydrides. Org Lett 2019; 21:1948-1952. [DOI: 10.1021/acs.orglett.8b03947] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marine Gavel
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | - Thibaut Courant
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | | | - Thomas Lecourt
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
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12
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Choi D, Shiga N, Franzén R, Nemoto T. Acid-Promoted Cascade Cyclization to Produce 2-(4′-Alkoxyaryl)-3,4-Fused Tricyclic Dihydrobenzopyrans via a Vinylidene para-
Quinone Methide Intermediate. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dongil Choi
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1, Inohana 260-8675 Chuo-ku, Chiba Japan
| | - Naoki Shiga
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1, Inohana 260-8675 Chuo-ku, Chiba Japan
| | - Robert Franzén
- Department of Chemistry; University of Turku; Vatselankatu 2 20014 Turku Finland
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1, Inohana 260-8675 Chuo-ku, Chiba Japan
- Molecular Chirality Research Center; Chiba University; 1-33, Yayoi-cho 263-8522 Inage-ku, Chiba Japan
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