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Xu S, Xu W, Dong S, Liu D, Zhang W. RuPHOX-Ru Catalyzed Asymmetric Cascade Hydrogenation of 3-Substituted Chromones for the Synthesis of Corresponding Chiral Chromanols. Chemistry 2024:e202400978. [PMID: 38695858 DOI: 10.1002/chem.202400978] [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: 03/09/2024] [Indexed: 06/15/2024]
Abstract
An efficient RuPHOX-Ru catalyzed asymmetric cascade hydrogenation of 3-substituted chromones has been achieved under mild reaction conditions, affording the corresponding chiral 3-substituted chromanols in high yields with excellent enantio- and diastereoselectivities (up to 99 % yield, >99 % ee and >20 : 1 dr). Control reactions and deuterium labelling experiments revealed that a dynamic kinetic resolution process occurs during the subsequent hydrogenation of the C=O double bond, which is responsible for the high performance of the asymmetric cascade hydrogenation. The resulting products allow for several transformations and it was shown that the protocol provides a practical and alternative strategy for the synthesis of chiral 3-substituted chromanols and their derivatives.
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Affiliation(s)
- Shaofeng Xu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wenqi Xu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Siqi Dong
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Delong Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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Pirotte B, Florence X, Goffin E, Leleux F, Lebrun P. Research Advancements on Fluorinated and Non-Fluorinated 4-Phenyl(thio)ureido-Substituted 2,2-Dimethylchromans Acting as Inhibitors of Insulin Release and Smooth Muscle Relaxants. Med Chem 2022; 18:884-894. [PMID: 35189799 DOI: 10.2174/1573406418666220221145500] [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: 10/22/2021] [Revised: 11/29/2021] [Accepted: 12/21/2021] [Indexed: 11/22/2022]
Abstract
AIMS The present study aimed at characterizing the impact of the presence or absence of fluorine atoms on the phenyl and benzopyran rings of 4-phenyl(thio)ureido-substituted 2,2-dimethylchromans on their ability to inhibit insulin release from pancreatic -cells or to relax vascular smooth muscle cells. METHODS Most compounds were found to inhibit insulin secretion and to provoke a marked myorelaxant activity. RESULTS The lack of a fluorine or a chlorine atom at the 6-position of the 2,2-dimethylchroman core structure reduced the inhibitory activity on the pancreatic endocrine tissue. One of the most active compounds on both tissues, compound 11h (BPDZ 678), was selected for further pharmacological investigations. CONCLUSION The biological data suggested that 11h mainly expressed the profile of a KATP channel opener on pancreatic -cells, although a calcium entry blockade effect was also observed. On vascular smooth muscle cells, 11h behaved as a calcium entry blocker.
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Affiliation(s)
- Bernard Pirotte
- Laboratoire de Chimie Pharmaceutique, Center for Interdisciplinary Research on Medicines (CIRM), Université de Liège, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liège, Belgium
| | - Xavier Florence
- Laboratoire de Chimie Pharmaceutique, Center for Interdisciplinary Research on Medicines (CIRM), Université de Liège, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liège, Belgium
- Laboratoire de Physiologie et Pharmacologie, Université Libre de Bruxelles, Faculté de Médecine, 808 Route de Lennik, B-1070 Bruxelles, Belgium
| | - Eric Goffin
- Laboratoire de Chimie Pharmaceutique, Center for Interdisciplinary Research on Medicines (CIRM), Université de Liège, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liège, Belgium
| | - Fabienne Leleux
- Laboratoire de Physiologie et Pharmacologie, Université Libre de Bruxelles, Faculté de Médecine, 808 Route de Lennik, B-1070 Bruxelles, Belgium
| | - Philippe Lebrun
- Laboratoire de Physiologie et Pharmacologie, Université Libre de Bruxelles, Faculté de Médecine, 808 Route de Lennik, B-1070 Bruxelles, Belgium
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Zhu Y, Zhou J, Li J, Xu K, Ye J, Lu Y, Liu D, Zhang W. Kinetic resolution of azaflavanones via a RuPHOX-Ru catalyzed asymmetric hydrogenation. Org Chem Front 2021. [DOI: 10.1039/d1qo01310f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The kinetic resolution of azaflavanones has been established via RuPHOX-Ru catalyzed asymmetric hydrogenation, providing chiral azaflavanones and azaflavanols in high yields with up to >20 : 1 dr and 99.7% ee.
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Affiliation(s)
- Yue Zhu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Jiayu Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Jing Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Kai Xu
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Jianxun Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yufei Lu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Delong Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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Pirotte B, Florence X, Goffin E, Lebrun P. 2,2-Dimethyl-3,4-dihydro-2 H-1,4-benzoxazines as isosteres of 2,2-dimethylchromans acting as inhibitors of insulin release and vascular smooth muscle relaxants. MEDCHEMCOMM 2019; 10:431-438. [PMID: 31015906 DOI: 10.1039/c8md00593a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/01/2019] [Indexed: 11/21/2022]
Abstract
The present study describes the synthesis and biological evaluation of 4-phenylureido/thioureido-substituted 2,2-dimethyl-3,4-dihydro-2H-1,4-benzoxazines as isosteres of corresponding 2,2-dimethylchromans reported to be pancreatic β-cell KATP channel openers. The benzoxazines were found to be less active as inhibitors of the glucose-induced insulin release than their corresponding chromans, while the myorelaxant activity of some 4-arylureido-substituted benzoxazines was more pronounced than that exhibited by their chroman counterparts. The myorelaxant activity of the most potent benzoxazine 8e was further characterized on rat aortic rings precontracted by 30 mM KCl in the presence of glibenclamide (10 μM) or precontracted by 80 mM extracellular KCl. Our findings indicate that, on vascular smooth muscle cells, the benzoxazine 8e mainly behaved as a calcium entry blocker.
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Affiliation(s)
- Bernard Pirotte
- Laboratoire de Chimie Pharmaceutique , Center for Interdisciplinary Research on Medicines (CIRM) , Université de Liège , Quartier Hôpital , Avenue Hippocrate 15 , B-4000 Liège , Belgium .
| | - Xavier Florence
- Laboratoire de Chimie Pharmaceutique , Center for Interdisciplinary Research on Medicines (CIRM) , Université de Liège , Quartier Hôpital , Avenue Hippocrate 15 , B-4000 Liège , Belgium . .,Laboratoire de Physiologie et Pharmacologie , Université Libre de Bruxelles , Faculté de Médecine , 808 Route de Lennik , B-1070 Bruxelles , Belgium
| | - Eric Goffin
- Laboratoire de Chimie Pharmaceutique , Center for Interdisciplinary Research on Medicines (CIRM) , Université de Liège , Quartier Hôpital , Avenue Hippocrate 15 , B-4000 Liège , Belgium .
| | - Philippe Lebrun
- Laboratoire de Physiologie et Pharmacologie , Université Libre de Bruxelles , Faculté de Médecine , 808 Route de Lennik , B-1070 Bruxelles , Belgium
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Ma Y, Li J, Ye J, Liu D, Zhang W. Synthesis of chiral chromanols via a RuPHOX-Ru catalyzed asymmetric hydrogenation of chromones. Chem Commun (Camb) 2018; 54:13571-13574. [PMID: 30444507 DOI: 10.1039/c8cc07787h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Chiral chromanols and their derivatives have been synthesized via a RuPHOX-Ru catalyzed asymmetric hydrogenation of chromones in high yields, >20 : 1 drs and with up to 99.9% ee. Control experiments show that the reaction undergoes two sequential asymmetric hydrogenation steps of the C[double bond, length as m-dash]C and C[double bond, length as m-dash]O double bonds. The reaction could be performed on a gram-scale with a relatively low catalyst loading (up to 1000 S/C), and the resulting products can be transformed to several biologically active compounds.
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Affiliation(s)
- Yujie Ma
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Jing Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Jianxun Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Delong Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China. and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
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