1
|
Kondo K, Kubota K, Ito H. Mechanochemistry enabling highly efficient Birch reduction using sodium lumps and d-(+)-glucose. Chem Sci 2024; 15:4452-4457. [PMID: 38516077 PMCID: PMC10952065 DOI: 10.1039/d3sc06052g] [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: 11/12/2023] [Accepted: 02/10/2024] [Indexed: 03/23/2024] Open
Abstract
In this study, a mechanochemical protocol for highly efficient and ammonia-free sodium-based Birch reduction was developed, leveraging the use of cheap and easy-to-handle sodium lumps. The key to achieving this transformation is the use of d-(+)-glucose as a proton source, which solidifies the reaction mixture in bulk state, enhancing the efficiency of the in situ mechanical activation of sodium lumps through the ball-milling process. Under the developed conditions, a diverse array of aromatic and heteroaromatic compounds were selectively reduced to produce the corresponding 1,4-cyclohexadiene derivatives in high yields within 30 min. Notably, all synthetic operations can be carried out without inert gases or the need for dry or bulk organic solvents. Furthermore, a scaled-up synthesis can be conducted without any yield losses. These results suggest that the present mechanochemical approach offers a more convenient, economically attractive, and sustainable alternative to previously established Birch reduction protocols.
Collapse
Affiliation(s)
- Keisuke Kondo
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
| | - Koji Kubota
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido Japan
| | - Hajime Ito
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido Japan
| |
Collapse
|
2
|
Cseh K, Geisler H, Stanojkovska K, Westermayr J, Brunmayr P, Wenisch D, Gajic N, Hejl M, Schaier M, Koellensperger G, Jakupec MA, Marquetand P, Kandioller W. Arene Variation of Highly Cytotoxic Tridentate Naphthoquinone-Based Ruthenium(II) Complexes and In-Depth In Vitro Studies. Pharmaceutics 2022; 14:2466. [PMID: 36432656 PMCID: PMC9699003 DOI: 10.3390/pharmaceutics14112466] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/02/2022] [Accepted: 11/05/2022] [Indexed: 11/18/2022] Open
Abstract
The main purpose of this study was to synthesize a new set of naphthoquinone-based ruthenium(II) arene complexes and to develop an understanding of their mode of action. This study systematically reviews the steps of synthesis, aiming to provide a simplified approach using microwave irradiation. The chemical structures and the physicochemical properties of this novel group of compounds were examined by 1H-NMR and 13C-NMR spectroscopy, X-ray diffractometry, HPLC-MS and supporting DFT calculations. Several aspects of the biological activity were investigated in vitro, including short- and long-term cytotoxicity tests, cellular accumulation studies, detection of reactive oxygen species generation, apoptosis induction and NAD(P)H:quinone oxidoreductase 1 (NQO1) activity as well as cell cycle analysis in A549, CH1/PA-1, and SW480 cancer cells. Furthermore, the DNA interaction ability was studied in a cell-free assay. A positive correlation was found between cytotoxicity, lipophilicity and cellular accumulation of the tested complexes, and the results offer some important insights into the effects of the arene. The most obvious finding to emerge from this study is that the usually very chemosensitive CH1/PA-1 teratocarcinoma cells showed resistance to these phthiocol-based organometallics in comparison to the usually less chemosensitive SW480 colon carcinoma cells, which pilot experiments suggest as being related to NQO1 activity.
Collapse
Affiliation(s)
- Klaudia Cseh
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Heiko Geisler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Kristina Stanojkovska
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 17, 1090 Vienna, Austria
| | - Julia Westermayr
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Linnéstr. 2, 04103 Leipzig, Germany
| | - Philipp Brunmayr
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Dominik Wenisch
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Natalie Gajic
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Michaela Hejl
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Martin Schaier
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, 1090 Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Gunda Koellensperger
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, 1090 Vienna, Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna, 1090 Vienna, Austria
| | - Philipp Marquetand
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 17, 1090 Vienna, Austria
- Vienna Research Platform on Accelerating Photoreaction Discovery, University of Vienna, 1090 Vienna, Austria
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna, 1090 Vienna, Austria
| |
Collapse
|
3
|
Boyd DR, Sharma ND, McIntyre PBA, Stevenson PJ, McRoberts WC, Gohil A, Hoering P, Allen CCR. Enzyme-Catalysed Synthesis of Cyclohex-2-en-1-onecis-Diols from Substituted Phenols, Anilines and Derived 4-Hydroxycyclohex-2-en-1-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Derek R. Boyd
- School of Chemistry and Chemical Engineering; Queen's University of Belfast; Belfast BT9 5AG U.K
| | - Narain D. Sharma
- School of Chemistry and Chemical Engineering; Queen's University of Belfast; Belfast BT9 5AG U.K
| | - Peter B. A. McIntyre
- School of Chemistry and Chemical Engineering; Queen's University of Belfast; Belfast BT9 5AG U.K
| | - Paul J. Stevenson
- School of Chemistry and Chemical Engineering; Queen's University of Belfast; Belfast BT9 5AG U.K
| | - W. Colin McRoberts
- Agri-food and Biosciences Institute for Northern Ireland; Belfast BT9 5PX U.K
| | - Amit Gohil
- School of Biological Sciences; Queen's University of Belfast; Belfast BT9 7BL U.K
| | - Patrick Hoering
- School of Biological Sciences; Queen's University of Belfast; Belfast BT9 7BL U.K
| | | |
Collapse
|
4
|
Duarte F, Gronert S, Kamerlin SCL. Concerted or stepwise: how much do free-energy landscapes tell us about the mechanisms of elimination reactions? J Org Chem 2014; 79:1280-8. [PMID: 24404911 PMCID: PMC3966530 DOI: 10.1021/jo402702m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The base-catalyzed dehydration of benzene cis-1,2-dihydrodiols is driven by formation of an aromatic product as well as intermediates potentially stabilized by hyperaromaticity. Experiments exhibit surprising shifts in isotope effects, indicating an unusual mechanistic balance on the E2-E1cB continuum. In this study, both 1- and 2-dimensional free energy surfaces are generated for these compounds with various substituents, using density functional theory and a mixed implicit/explicit solvation model. The computational data help unravel hidden intermediates along the reaction coordinate and provide a novel conceptual framework for distinguishing between competing pathways in this and any other system with borderline reaction mechanisms.
Collapse
Affiliation(s)
- Fernanda Duarte
- Science for Life Laboratory, Department of Cell and Molecular Biology (ICM), Uppsala University , BMC Box 596, S-751 24 Uppsala, Sweden
| | | | | |
Collapse
|