1
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Lin Y, Xu G, Tang W. Chiral Polymeric Diamine Ligands for Iridium-Catalyzed Asymmetric Transfer Hydrogenation. J Am Chem Soc 2024; 146:27736-27744. [PMID: 39319748 DOI: 10.1021/jacs.4c09516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
A series of polymeric chiral diamine ligands are developed by diboron-templated asymmetric reductive couplings, and their iridium complexes Ir-polydiamines are efficient and recyclable catalysts for asymmetric transfer hydrogenation (ATH) of functionalized ketones, affording a series of optically active secondary alcohols in excellent enantioselectivities (up to 99% ee) and unprecedentedly high total TONs (12,000, six cycles). Ir-polydiamine catalysts with longer chains offered higher reactivities, providing a plausible deactivation mechanism and practical solutions of ATH for vitamin B5 and phenylephrine.
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Affiliation(s)
- Yaodong Lin
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Guangqing Xu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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2
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Wang Z, Li M, Zuo W. Cobalt-Catalyzed Asymmetric Hydrogenation of Ketones Enabled by the Synergism of an N-H Functionality and a Redox-Active Ligand. J Am Chem Soc 2024; 146:26416-26426. [PMID: 39283960 DOI: 10.1021/jacs.4c09351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
The transition metal-catalyzed asymmetric hydrogenation (AH) of ketones to produce enantioenriched alcohols is an important reaction in organic chemistry with applications in the pharmaceutical and agrochemical fields. Using earth-abundant, biorelevant cobalt as the central metal in the catalyst has a high potential to improve sustainability and achieve hydrogenation reactions that are scalable. However, due to the high d-electron count, designing cobalt catalysts that exhibit turnover numbers (TONs, ≥1000) and enantioselectivities (≥90%) sufficient for synthetic utility and practical scalability (≥1 kg scale) remains a challenge. In this work, an efficient catalyst design strategy utilizing an amino(imino)diphosphine Co(II) bromide precatalyst is presented to achieve this goal. The quantitative production of a wide range of secondary chiral alcohols with TONs of up to 150,000 and an enantiomeric excess (e.e.) of up to 99% at a scale of up to 1.35 kg was achieved, indicating that the proposed cobalt catalyst is highly promising for AH and scale-up reactions. A mechanistic study revealed that the synergism of an N-H functionality and a redox-active ligand endows the cobalt catalyst with a high productivity and excellent enantioselectivity.
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Affiliation(s)
- Zeming Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Minhao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Weiwei Zuo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
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3
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Tharra P, Švejkar J, Jadhav AS, Nečas M, Dub PA, Halls MD, Švenda J. Enantioselective Transfer Hydrogenation of α-Methoxyimino-β-keto Esters. J Org Chem 2024; 89:12902-12911. [PMID: 39213600 PMCID: PMC11421019 DOI: 10.1021/acs.joc.4c00381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 08/08/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024]
Abstract
α-Methoxyimino-β-keto esters are reported to undergo highly enantioselective catalytic transfer hydrogenation using the Noyori-Ikariya complex RuCl(p-cymene)[(S,S)-Ts-DPEN] in a mixture of formic acid-triethylamine and dimethylformamide at 25 °C. The experimental study performed on over 25 substrates combined with computational analysis revealed that a Z-configured methoxyimino group positioned alpha to a ketone carbonyl leads to higher reactivity and mostly excellent enantioselectivity within this substrate class. Density functional theory calculations of competing transition states were used in rationalizing the origins of enantioselectivity and the possible role of the methoxyimino group in the reaction outcome.
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Affiliation(s)
- Prabhakara
R. Tharra
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, Brno 625 00, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, Pekařská 53, Brno 656 91, Czech Republic
| | - Jiří Švejkar
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, Brno 625 00, Czech Republic
| | - Abhijeet S. Jadhav
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, Brno 625 00, Czech Republic
| | - Marek Nečas
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, Brno 625 00, Czech Republic
| | - Pavel A. Dub
- Schrödinger,
Inc., San Diego, California 92121, United States
| | - Mathew D. Halls
- Schrödinger,
Inc., San Diego, California 92121, United States
| | - Jakub Švenda
- Department
of Chemistry, Faculty of Science, Masaryk
University, Kamenice 5, Brno 625 00, Czech Republic
- International
Clinical Research Center, St. Anne’s
University Hospital, Pekařská 53, Brno 656 91, Czech Republic
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4
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Su Y, Ma Z, Wang J, Li L, Yan X, Ma N, Liu Q, Solan GA, Wang Z. Asymmetric Transfer Hydrogenation of Ketones Improved by PNN-Manganese Complexes. J Org Chem 2024; 89:12318-12325. [PMID: 39146490 DOI: 10.1021/acs.joc.4c01253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Chiral manganese(I) complexes that contain carbocyclic-fused 8-amino-5,6,7,8-tetrahydroquinolinyl groups that are appended with distinct para-R substituents have proven to be effective catalysts in the asymmetric transfer hydrogenation (ATH) of a wide range of ketones (48 examples). Notably, Mn2 proved to be the most productive catalyst, allowing an outstanding turnover number of 8300 with catalyst loadings as low as 0.01 mol %. Furthermore, this catalytic protocol shows considerable promise for applications in the synthesis of chiral drugs such as Lusutrombopag.
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Affiliation(s)
- Yi Su
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Zhifeng Ma
- School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, China
| | - Jingyao Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Libin Li
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
- Shijiazhuang Chiral Chemical Co., Ltd., Shijiazhuang 050000, China
| | - Xiuli Yan
- College of Material Science and Engineering, Hebei University of Engineering, Handan 056038, China
| | - Ning Ma
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Qingbin Liu
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Gregory A Solan
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, U.K
| | - Zheng Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
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5
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Meng X, Lan S, Chen T, Luo H, Zhu L, Chen N, Liu J, Yang S, Cotman AE, Zhang Q, Fang X. Catalytic Asymmetric Transfer Hydrogenation of Acylboronates: BMIDA as the Privileged Directing Group. J Am Chem Soc 2024; 146:20357-20369. [PMID: 38869937 DOI: 10.1021/jacs.4c05924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Developing a general, highly efficient, and enantioselective catalytic method for the synthesis of chiral alcohols is still a formidable challenge. We report in this article the asymmetric transfer hydrogenation (ATH) of N-methyliminodiacetyl (MIDA) acylboronates as a general substrate-independent entry to enantioenriched secondary alcohols. ATH of acyl-MIDA-boronates with (het)aryl, alkyl, alkynyl, alkenyl, and carbonyl substituents delivers a variety of enantioenriched α-boryl alcohols. The latter are used in a range of stereospecific transformations based on the boron moiety, enabling the synthesis of carbinols with two closely related α-substituents, which cannot be obtained with high enantioselectivities using direct asymmetric hydrogenation methods, such as the (R)-cloperastine intermediate. Computational studies illustrate that the BMIDA group is a privileged enantioselectivity-directing group in Noyori-Ikariya ATH compared to the conventionally used aryl and alkynyl groups due to the favorable CH-O attractive electrostatic interaction between the η6-arene-CH of the catalyst and the σ-bonded oxygen atoms in BMIDA. The work expands the domain of conventional ATH and shows its huge potential in addressing challenges in symmetric synthesis.
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Affiliation(s)
- Xiangjian Meng
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Fujian Normal University, Fuzhou 350007, China
| | - Shouang Lan
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Ting Chen
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Haotian Luo
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Lixuan Zhu
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Nanchu Chen
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Jinggong Liu
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Andrej Emanuel Cotman
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, SI-1000 Ljubljana, Slovenia
| | - Qi Zhang
- Hefei University of Technology, Hefei 230009, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
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6
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Liu W, Ren C, Zhou L, Luo H, Meng X, Luo P, Luo Y, Dong W, Lan S, Liu J, Yang S, Zhang Q, Fang X. Regio- and Stereoselective Transfer Hydrogenation of Aryloxy Group-Substituted Unsymmetrical 1,2-Diketones: Synthetic Applications and Mechanistic Studies. J Am Chem Soc 2024; 146:20092-20106. [PMID: 39007870 DOI: 10.1021/jacs.4c04171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Developing a general method that leads to the formation of different classes of chiral bioactive compounds and their stereoisomers is an attractive but challenging research topic in organic synthesis. Furthermore, despite the great value of asymmetric transfer hydrogenation (ATH) in both organic synthesis and the pharmaceutical industry, the monohydrogenation of unsymmetrical 1,2-diketones remains underdeveloped. Here, we report the aryloxy group-assisted highly regio-, diastereo-, and enantioselective ATH of racemic 1,2-diketones. The work produces a myriad of enantioenriched dihydroxy ketones, and further transformations furnish all eight stereoisomers of diaryl triols, polyphenol, emblirol, and glycerol-type natural products. Mechanistic studies and calculations reveal two working modes of the aryloxy group in switching the regioselectivity from a more reactive carbonyl to a less reactive one, and the potential of ATH on 1,2-diketones in solving challenging synthetic issues has been clearly demonstrated.
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Affiliation(s)
- Wenjun Liu
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Caiyi Ren
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Liyuan Zhou
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Fujian Normal University, Fuzhou 350108, China
| | - Haotian Luo
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Xiangjian Meng
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Peng Luo
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Yingkun Luo
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Wennan Dong
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Shouang Lan
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Jinggong Liu
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei 230009, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
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7
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Sheokand S, Sharma S, Mohite MA, Rajaraman G, Balakrishna MS. ZnCl 2-catalysed transfer hydrogenation of carbonyls and chemoselective reduction of the CC bond in α,β-unsaturated ketones. Chem Commun (Camb) 2024; 60:7733-7736. [PMID: 38973425 DOI: 10.1039/d4cc02700k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
This manuscript describes chemoselective reduction of CC in α,β-unsaturated ketones and the transfer hydrogenation of aldehydes and ketones catalysed by ZnCl2-phosphinamino-triazolyl-pyridine (0.5 mol%) using KOH/iPrOH as a H2 source. A detailed mechanistic study using DFT calculations (B3LYP-D3/def2-TZVP) revealed the key role of metal-ligand cooperation (MLC) in the catalytic reaction demonstrating the non-innocent behaviour of the phosphine ligand.
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Affiliation(s)
- Sonu Sheokand
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Sunita Sharma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Manali A Mohite
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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8
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Kılınçarslan R, Tuncer H, Özdemir N, Çetinkaya B. Vitamin B1-based thiazol-2-ylidene-Ru(II) complexes: recyclable transfer hydrogenation catalysts in water. Dalton Trans 2024; 53:9192-9197. [PMID: 38742996 DOI: 10.1039/d4dt00445k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The [(p-cymene)RuCl(κ2C,N-{CNHC-NH})]+X- (CNHC = thiazol-2-ylidene) complexes with a bidentate ligand (2: X = Cl and 3: X = PF6) were prepared by a one-pot reaction of vitamin B1 (VB1, 1), Ag2O and [(p-cymene)RuCl2]2. In the complexes, VB1 coordinates through C2 and the exocyclic N in the imino form with the κ2-(C,N) coordination mode. The complexes 2 and 3 are stable in the solid state, but slowly release p-cymene in solution. Furthermore, upon heating in polar solvents, 2 or 3 can be converted by ligand exchange reactions to produce [(L)3RuCl(κ2C,N-{CNHC-NH})]+PF6- (4: L = py).Robustness was improved remarkably for 4. The complex 4 is stable in the solid state and in solution. The complexes 2-4 have been identified by 1H and 13C{1H} 2D NMR spectroscopy and 2 and 4 were studied by X-ray crystallography. In an effort to develop a recyclable catalyst in water, 2-4 were evaluated for TH of ketones and aldehydes with an azeotropic mixture of HCOOH/Et3N in water. The complexes 3 and 4 exhibited very good catalytic activity and 4 could be reused nine times without significant loss of activity, giving a high turnover frequency (TOF50%(h-1) = 1286).
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Affiliation(s)
- Rafet Kılınçarslan
- Pamukkale University, Faculty of Science, Department of Chemistry, 20070, Denizli, Turkey.
| | - Hayriye Tuncer
- Pamukkale University, Faculty of Science, Department of Chemistry, 20070, Denizli, Turkey.
| | - Namık Özdemir
- Ondokuz Mayıs University, Faculty of Science, Department of Physics, 55139, Samsun, Turkey
| | - Bekir Çetinkaya
- Ege University, Faculty of Science, Department of Chemistry, 35100, İzmir, Turkey
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9
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Gisbert Y, Fellert M, Stindt CN, Gerstner A, Feringa BL. Molecular Motors' Magic Methyl and Its Pivotal Influence on Rotation. J Am Chem Soc 2024; 146:12609-12619. [PMID: 38656891 PMCID: PMC11082891 DOI: 10.1021/jacs.4c01628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/26/2024]
Abstract
Molecular motors have found a wide range of applications, powering a transition from molecules to dynamic molecular systems for which their motion must be precisely tuned. To achieve this adjustment, strategies involving laborious changes in their design are often used. Herein, we show that control over a single methyl group allows a drastic change in rotational properties. In this regard, we present the straightforward asymmetric synthesis of β-methylated first-generation overcrowded-alkene-based molecular motors. Both enantiomers of the new motors were prepared in good yields and high enantiopurities, and these motors were thoroughly studied by variable-temperature nuclear magnetic resonance (VT-NMR), ultraviolet-visible (UV-vis), and circular dichroism (CD) spectroscopy, showing a crucial influence of the methylation pattern on the rotational behavior of the motors. Starting from a common chiral precursor, we demonstrate that subsequent methylation can drastically reduce the speed of the motor and reverse the direction of the rotation. We show for the first time that complete unidirectionality can be achieved even when the energy difference between the stable and metastable states is small, resulting in the coexistence of both states under ambient conditions without hampering the energy ratcheting process. This discovery opens the way for the design of more advanced first-generation motors.
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Affiliation(s)
| | | | - Charlotte N. Stindt
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
| | - Alexander Gerstner
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
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10
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Mangunuru HPR, Terrab L, Janganati V, Kalikinidi NR, Tenneti S, Natarajan V, Shada ADR, Naini SR, Gajula P, Lee D, Samankumara LP, Mamunooru M, Jayaraman A, Sahani RL, Yin J, Hewa-Rahinduwage CC, Gangu A, Chen A, Wang Z, Desai B, Yue TY, Wannere CS, Armstrong JD, Donsbach KO, Sirasani G, Gupton BF, Qu B, Senanayake CH. Synthesis of Chiral 1,2-Amino Alcohol-Containing Compounds Utilizing Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of Unprotected α-Ketoamines. J Org Chem 2024; 89:6085-6099. [PMID: 38648720 DOI: 10.1021/acs.joc.4c00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Herein, we disclose a facile synthetic strategy to access an important class of drug molecules that contain chiral 1,2-amino alcohol functionality utilizing highly effective ruthenium-catalyzed asymmetric transfer hydrogenation of unprotected α-ketoamines. Recently, the COVID-19 pandemic has caused a crisis of shortage of many important drugs, especially norepinephrine and epinephrine, for the treatment of anaphylaxis and hypotension because of the increased demand. Unfortunately, the existing technologies are not fulfilling the worldwide requirement due to the existing lengthy synthetic protocols that require additional protection and deprotection steps. We identified a facile synthetic protocol via a highly enantioselective one-step process for epinephrine and a two-step process for norepinephrine starting from unprotected α-ketoamines 1b and 1a, respectively. This newly developed enantioselective ruthenium-catalyzed asymmetric transfer hydrogenation was extended to the synthesis of many 1,2-amino alcohol-containing drug molecules such as phenylephrine, denopamine, norbudrine, and levisoprenaline, with enantioselectivities of >99% ee and high isolated yields.
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Affiliation(s)
- Hari P R Mangunuru
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Leila Terrab
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Venumadhav Janganati
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | | | - Srinivasarao Tenneti
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Vasudevan Natarajan
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Arun D R Shada
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Santhosh Reddy Naini
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Praveen Gajula
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Daniel Lee
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Lalith P Samankumara
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Manasa Mamunooru
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Aravindan Jayaraman
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Rajkumar Lalji Sahani
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Jinya Yin
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | | | - Aravind Gangu
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Anji Chen
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Zhirui Wang
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Bimbisar Desai
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Tai Y Yue
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Chaitanya S Wannere
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Joseph D Armstrong
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Kai O Donsbach
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Gopal Sirasani
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - B Frank Gupton
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Bo Qu
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
| | - Chris H Senanayake
- TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States
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11
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Kim SW, Foker EA, Wolf WJ, Woltornist RA, Shemet A, McCowen S, Simmons EM, Lin Z, He BL, Menger R, Xu X, Ayers S, Bunner MH, Sarjeant AA. α-Alkylation and Asymmetric Transfer Hydrogenation of Tetralone via Hydrogen Borrowing and Dynamic Kinetic Resolution Strategy Using a Single Iridium(III) Complex. Org Lett 2024; 26:3103-3108. [PMID: 38588485 DOI: 10.1021/acs.orglett.4c00718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Here we present a novel strategy for the synthesis of enantiomerically enriched tetrahydronaphthalen-1-ols. The reaction proceeds via an alkylation (via hydrogen borrowing) and ammonium formate-mediated asymmetric transfer hydrogenation (via dynamic kinetic resolution), giving alkylated tetralols in high yields and good enantio- and diastereoselectivity across a diverse range of both alcohol and tetralone substrates. Additionally, these products were successfully derivatized to several complex molecules, demonstrating the utility of the tetrahydronaphthalen-1-ol.
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Affiliation(s)
- Seung Wook Kim
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Elizabeth A Foker
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - William J Wolf
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Ryan A Woltornist
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Andrii Shemet
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Shelby McCowen
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Eric M Simmons
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Ziqing Lin
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Brian L He
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Robert Menger
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Xuejun Xu
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Sloan Ayers
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Matthew H Bunner
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Amy A Sarjeant
- Chemical Process Development, Bristol Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
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12
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Xu L, Yang T, Sun H, Zeng J, Mu S, Zhang X, Chen GQ. Rhodium-Catalyzed Asymmetric Hydrogenation and Transfer Hydrogenation of 1,3-Dipolar Nitrones. Angew Chem Int Ed Engl 2024; 63:e202319662. [PMID: 38366812 DOI: 10.1002/anie.202319662] [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: 12/19/2023] [Revised: 02/03/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
Owing to their distinctive 1,3-dipolar structure, the catalytic asymmetric hydrogenation of nitrones to hydroxylamines has been a formidable and longstanding challenge, characterized by intricate enantiocontrol and susceptibility to N-O bond cleavage. In this study, the asymmetric hydrogenation and transfer hydrogenation of nitrones were accomplished with a tethered TsDPEN-derived cyclopentadienyl rhodium(III) catalyst (TsDPEN: p-toluenesulfonyl-1,2-diphenylethylene-1,2-diamine), the reaction proceeds via a novel 7-membered cyclic transition state, producing chiral hydroxylamines with up to 99 % yield and >99 % ee. The practical viability of this methodology was underscored by gram-scale catalytic reactions and subsequent transformations. Furthermore, mechanistic investigations and DFT calculations were also conducted to elucidate the origin of enantioselectivity.
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Affiliation(s)
- Liren Xu
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Tilong Yang
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Hao Sun
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Jingwen Zeng
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Shuo Mu
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Xumu Zhang
- Department of Chemistry, the Grubbs Institute, and Medi-X Pingshan, Southern University of Science and Technology, Shenzhen, China
| | - Gen-Qiang Chen
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, China
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13
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Zhang S, Ouyang Y, Gao Y, Li P. Design and Application of New Pyridine-Derived Chiral Ligands in Asymmetric Catalysis. Acc Chem Res 2024; 57:957-970. [PMID: 38446135 DOI: 10.1021/acs.accounts.3c00808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
ConspectusThe innovation of chiral ligands has been crucial for the asymmetric synthesis of functional molecules, as demonstrated by several types of widely applied "privileged" ligands. In this context, chiral pyridine-derived ligands, by far some of the oldest and most widely utilized ligands in catalysis, have attracted considerable research interest in the past half-century. However, the development of broadly applicable chiral pyridine units (CPUs) has been plagued by several intertwining challenges, thus delaying advancements in many asymmetric reactions.This Account aims to summarize the recent progress in new CPU-containing ligands, focusing on a rationally designed, modular, and tunable CPU developed in our laboratory. A significant problem thwarting conventional designs is the paradox between broad reactivity and stereoselectivity; that is, while enhanced stereoselectivity may be achieved by introducing chiral elements close to the N atom, the concomitant increase in local steric hindrance often limits catalytic activity and scope. Our newly developed CPU features a rigid [6-5-3] fused-ring framework and a tunable spirocyclic ketal side wall. The well-defined three-dimensional structure minimizes local (inner layer) steric hindrance and tunes the peripheral environment (outer layer) by remote substituents, thus securing reactivity and stereoselectivity. Different chelating ligands were readily assembled using this chiral structural module, with applications in mechanistically diverse transition-metal-catalyzed reactions. Thus, a series of chiral 2,2'-bipyridine ligands were successfully employed in the development of a general, efficient, and highly enantioselective nickel-catalyzed intermolecular reductive addition, Ullmann coupling of ortho-chlorinated aryl aldehydes, and carboxylation of benzylic (pseudo)halides with CO2. Notably, these chiral 2,2'-bipyridine ligands exhibited superior catalytic activity in the reactions compared to common N-based ligands. In addition, highly enantioselective iridium-catalyzed C-H borylation was developed using a CPU-containing N,B-bidentate ligand. Furthermore, mechanistically challenging, additive-free, and broad-scope transfer hydrogenative direct asymmetric reductive amination was achieved using a half-sandwich iridium catalyst supported by a chiral N,C-bidentate ligand. The new ligands demonstrated excellent performance in securing high catalytic activity and stereoselectivity, which, when combined with experimental and computational mechanistic investigations, supported the "double-layer control" design concept.Considering the broad applications of pyridine-derived ligands, the research progress described herein should inspire the creation of novel chiral catalysts and drive the development of many catalytic asymmetric reactions.
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Affiliation(s)
- Shuai Zhang
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Yizhao Ouyang
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Yuan Gao
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Pengfei Li
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
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14
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Ning Y, Wang Y, Gui J. Bioinspired Two-Phase Synthesis of Gibbosterol A. JACS AU 2024; 4:635-641. [PMID: 38425898 PMCID: PMC10900487 DOI: 10.1021/jacsau.3c00698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/22/2023] [Accepted: 12/26/2023] [Indexed: 03/02/2024]
Abstract
The disecosteroid natural product gibbosterol A-which has a 14/5-bicyclic framework, a high oxidation state, and a twisted trans-9,11-epoxy motif-is the first water-soluble 5,10:8,9-disecosteroid. Herein, we report a bioinspired two-phase synthesis of this natural product in only 15 steps from inexpensive ergosterol. In the first (isomerase) phase, the core bicyclic framework is rapidly installed by the skeletal reorganization of ergosterol endoperoxide via a ruthenium-catalyzed dual C-C bond fragmentation. In the second (oxidase) phase, chemoselective, regioselective, and stereoselective redox transformations precisely introduce the requisite oxygenated functional groups. This work demonstrates that the ingenious two-phase synthesis logic that has been applied to terpenes is also a powerful strategy for steroid synthesis.
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Affiliation(s)
- Yuhan Ning
- State Key Laboratory of Chemical
Biology, Shanghai Institute of Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of
Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yun Wang
- State Key Laboratory of Chemical
Biology, Shanghai Institute of Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of
Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jinghan Gui
- State Key Laboratory of Chemical
Biology, Shanghai Institute of Organic Chemistry, University of Chinese
Academy of Sciences, Chinese Academy of
Sciences, 345 Lingling Road, Shanghai 200032, China
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15
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Booth R, Whitwood AC, Duhme-Klair AK. Effect of Ligand Substituents on Spectroscopic and Catalytic Properties of Water-Compatible Cp*Ir-(pyridinylmethyl)sulfonamide-Based Transfer Hydrogenation Catalysts. Inorg Chem 2024; 63:3815-3823. [PMID: 38343274 PMCID: PMC10900292 DOI: 10.1021/acs.inorgchem.3c04040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
Transition-metal-based hydrogenation catalysts have applications ranging from high-value chemical synthesis to medicinal chemistry. A series of (pyridinylmethyl)sulfonamide ligands substituted with electron-withdrawing and -donating groups were synthesized to study the influence of the electronic contribution of the bidentate ligand in Cp*Ir piano-stool complexes. A variable-temperature NMR investigation revealed a strong correlation between the electron-donating ability of the substituent and the rate of stereoinversion of the complexes. This correlation was partially reflected in the catalytic activity of the corresponding catalysts. Complexes with electron-withdrawing substituents followed the trend observed in the variable-temperature NMR study, thereby confirming the rate-determining step to be donation of the hydride ligand. Strongly electron-donating groups, on the other hand, caused a change in the rate-determining step in the formation of the iridium-hydride species. These results demonstrate that the activity of these catalysts can be tuned systematically via changes in the electronic contribution of the bidentate (pyridinylmethyl)sulfonamide ligands.
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16
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Hicks EF, Inoue K, Stoltz BM. Enantioselective Total Synthesis of (-)-Hunterine A Enabled by a Desymmetrization/Rearrangement Strategy. J Am Chem Soc 2024; 146:4340-4345. [PMID: 38346145 PMCID: PMC10885145 DOI: 10.1021/jacs.3c13590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The first enantioselective total synthesis of (-)-hunterine A is disclosed. Our strategy employs a catalytic asymmetric desymmetrization of a symmetrical diketone and subsequent Beckmann rearrangement to construct a 5,6-α-aminoketone. A convergent 1,2-addition joins a vinyl dianion nucleophile and the enantioenriched ketone. The endgame of the synthesis features an aza-Cope/Mannich reaction and azide-olefin dipolar cycloaddition to complete the pentacyclic ring system. The synthesis is completed through a regioselective aziridine ring opening.
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Affiliation(s)
- Elliot F Hicks
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kengo Inoue
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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17
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Lan S, Huang H, Liu W, Xu C, Lei X, Dong W, Liu J, Yang S, Cotman AE, Zhang Q, Fang X. Asymmetric Transfer Hydrogenation of Cyclobutenediones. J Am Chem Soc 2024; 146:4942-4957. [PMID: 38326715 DOI: 10.1021/jacs.3c14239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Four-membered carbocycles are fundamental substructures in bioactive molecules and approved drugs and serve as irreplaceable building blocks in organic synthesis. However, developing efficient protocols furnishing diversified four-membered ring compounds in a highly regio-, diastereo-, and enantioselective fashion remains challenging but very desirable. Here, we report the unprecedented asymmetric transfer hydrogenation of cyclobutenediones. The reaction can selectively afford three types of four-membered products in high yields with high stereoselectivities, and the highly functionalized products enable a series of further transformations to form more diversified four-membered compounds. Asymmetric synthesis of di-, tri-, and tetrasubstituted bioactive molecules has also been achieved. Systematic mechanistic studies and theoretical calculations have revealed the origin of the regioselectivity, the key hydrogenation transition state models, and the sequence of the double and triple hydrogenation processes. The work provides a new choice for the catalytic asymmetric synthesis of cyclobutanes and related structures and demonstrates the robustness of asymmetric transfer hydrogenation in the accurate selectivity control of highly functionalized substrates.
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Affiliation(s)
- Shouang Lan
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Huangjiang Huang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
- Fujian Normal University, Fuzhou 350108, China
| | - Wenjun Liu
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Chao Xu
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Xiang Lei
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Wennan Dong
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Jinggong Liu
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Andrej Emanuel Cotman
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, SI-1000 Ljubljana, Slovenia
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, University of Chinese Academy of Sciences, Fuzhou 350100, China
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18
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Khamis N, Zheng Y, Diamantakis MN, Clarkson GJ, Liu J, Wills M. Regio- and Enantioselective Asymmetric Transfer Hydrogenation of One Carbonyl Group in a Diketone through Steric Hindrance. J Org Chem 2024; 89:2759-2763. [PMID: 38308650 PMCID: PMC10877611 DOI: 10.1021/acs.joc.3c01950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 01/12/2024] [Accepted: 01/23/2024] [Indexed: 02/05/2024]
Abstract
On the basis of steric hindrance, one carbonyl group in a diketone can be reduced in a regioselective manner, with high enantioselectivity. The methodology can be extended to ketones with varied length of hydrocarbon chain spacing, and the products can be converted by oxidation to hydroxy esters or lactones without loss of enantiopurity.
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Affiliation(s)
- Noha Khamis
- Department
of Chemistry, The University of Warwick, Coventry CV4 7AL, U.K.
- Department
of Chemistry, Faculty of Science, University
of Alexandria, Alexandria, Egypt
| | - Ye Zheng
- Department
of Chemistry, The University of Warwick, Coventry CV4 7AL, U.K.
| | | | - Guy J. Clarkson
- Department
of Chemistry, The University of Warwick, Coventry CV4 7AL, U.K.
| | - Jie Liu
- Department
of Physics, The University of Warwick, Coventry CV4 7AL, U.K.
| | - Martin Wills
- Department
of Chemistry, The University of Warwick, Coventry CV4 7AL, U.K.
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19
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Sharma M, Perkins AM, Awoyemi RF, Schmittou AN, Raju S, Pierce BS, Donnadieu B, Wipf DO, Stokes SL, Emerson JP. Three water-soluble copper(II) N-heterocyclic carbene complexes: toward copper-catalyzed ketone reduction under sustainable conditions. Dalton Trans 2024. [PMID: 38247368 DOI: 10.1039/d3dt03406b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
A series of tridentate copper(II) N-heterocyclic carbene (NHC) complexes with imidazole, benzimidazole, and 5,6-dimethylbenzimidazole azole rings were synthesized and comprehensively characterized via X-ray crystallography, ESI-MS, cyclic voltammetry, and UV-Vis and EPR spectroscopic studies. These complexes were then utilized for the optimization of ketone reduction under sustainable conditions using 2-acetylpyridine and phenylsilane. The relationships between product formation, temperature, reaction time, and catalyst loading for the hydrogenation reactions are covered in detail. Reduction of eighteen different aliphatic, cyclic, and aromatic ketones were demonstrated, which were compatible to produce the corresponding products in moderate to good yields. These systems were used to develop related DNA-hybrid catalytic systems, but only supported weak enantioselectivity. Further thermodynamic experiments showed Cu-NHC complexes did not demonstrate specific binding to DNA, which is consistent with their limited selectivity.
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Affiliation(s)
- Mitu Sharma
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Amanda M Perkins
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Raymond Femi Awoyemi
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Allison N Schmittou
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL, USA
| | - Selvam Raju
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Brad S Pierce
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL, USA
| | - Bruno Donnadieu
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - David O Wipf
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Sean L Stokes
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
| | - Joseph P Emerson
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
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20
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Kumar R. Transition-Metal-Catalyzed 1,2-Diaminations of Olefins: Synthetic Methodologies and Mechanistic Studies. Chem Asian J 2024; 19:e202300705. [PMID: 37743249 DOI: 10.1002/asia.202300705] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
1,2-Diamines are synthetically important motifs in organo-catalysis, natural products, and drug research. Continuous utilization of transition-metal based catalyst in direct 1,2-diamination of olefines, in contrast to metal-free transformations, with numerous impressive advances made in recent years (2015-2023). This review summarized contemporary research on the transition-metal catalyzed/mediated [e. g., Cu(II), Pd(II), Fe(II), Rh(III), Ir(III), and Co(II)] 1,2-diamination (asymmetric and non-asymmetric) especially emphasizing the recent synthetic methodologies and mechanistic understandings. Moreover, up-to-date discussion on (i) paramount role of oxidant and catalyst (ii) key achievements (iii) generality and uniqueness, (iv) synthetic limitations or future challenges, and (v) future opportunities are summarized related to this potential area.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, INDIA
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21
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Dinhof T, Kalina T, Stanković T, Braunsteiner K, Rohrbach P, Turhan E, Gradwohl A, Königshofer A, Horak J, Pallitsch K. Asymmetric Transfer Hydrogenation as a Key Step in the Synthesis of the Phosphonic Acid Analogs of Aminocarboxylic Acids. Chemistry 2023; 29:e202302171. [PMID: 37461839 PMCID: PMC10947287 DOI: 10.1002/chem.202302171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 09/21/2023]
Abstract
α-Aminophosphonic acids have a remarkably broad bioactivity spectrum. They can function as highly efficient transition state mimics for a variety of hydrolytic and angiotensin-converting enzymes, which makes them interesting target structures for synthetic chemists. In particular, the phosphonic acid analogs to α-aminocarboxylic acids (Pa AAs) are potent enzyme inhibitors, but many of them are only available by chiral or enzymatic resolution; sometimes only one enantiomer is accessible, and several have never been prepared in enantiopure form at all. Today, a variety of methods to access enantiopure α-aminophosphonic acids is known but none of the reported approaches can be generally applied for the synthesis of Pa AAs. Here we show that the phosphonic acid analogs of many (proteinogenic) α-amino acids become accessible by the catalytic, stereoselective asymmetric transfer hydrogenation (ATH) of α-oxo-phosphonates. The highly enantioenriched (enantiomeric excess (ee) ≥ 98 %) α-hydroxyphosphonates obtained are important pharmaceutical building blocks in themselves and could be easily converted to α-aminophosphonic acids in most studied cases. Even stereoselectively deuterated analogs became easily accessible from the same α-oxo-phosphonates using deuterated formic acid (DCO2 H).
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Affiliation(s)
- Tamara Dinhof
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
- Vienna Doctoral School in Chemistry (DoSChem)University of ViennaWähringerstraße 421090ViennaAustria
| | - Thomas Kalina
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
| | - Toda Stanković
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
| | - Kristóf Braunsteiner
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
| | - Philipp Rohrbach
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
| | - Ertan Turhan
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
- Vienna Doctoral School in Chemistry (DoSChem)University of ViennaWähringerstraße 421090ViennaAustria
| | - Andreas Gradwohl
- Vienna Doctoral School in Chemistry (DoSChem)University of ViennaWähringerstraße 421090ViennaAustria
- Institute of Inorganic ChemistryFaculty of ChemistryUniversity of ViennaJosef-Holaubek-Platz 21090ViennaAustria
| | - Artur Königshofer
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
| | - Jeannie Horak
- Division of Metabolic and Nutritional MedicineDr. von Hauner Children's HospitalLudwig Maximilians University Munich Medical CenterLindwurmstraße 480337MunichGermany
| | - Katharina Pallitsch
- Institute of Organic ChemistryFaculty of ChemistryUniversity of ViennaWähringerstraße 381090ViennaAustria
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22
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Taleb B, Jahjah R, Cornu D, Bechelany M, Al Ajami M, Kataya G, Hijazi A, El-Dakdouki MH. Exploring Hydrogen Sources in Catalytic Transfer Hydrogenation: A Review of Unsaturated Compound Reduction. Molecules 2023; 28:7541. [PMID: 38005261 PMCID: PMC10673347 DOI: 10.3390/molecules28227541] [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: 10/14/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Catalytic transfer hydrogenation has emerged as a pivotal chemical process with transformative potential in various industries. This review highlights the significance of catalytic transfer hydrogenation, a reaction that facilitates the transfer of hydrogen from one molecule to another, using a distinct molecule as the hydrogen source in the presence of a catalyst. Unlike conventional direct hydrogenation, catalytic transfer hydrogenation offers numerous advantages, such as enhanced safety, cost-effective hydrogen donors, byproduct recyclability, catalyst accessibility, and the potential for catalytic asymmetric transfer hydrogenation, particularly with chiral ligands. Moreover, the diverse range of hydrogen donor molecules utilized in this reaction have been explored, shedding light on their unique properties and their impact on catalytic systems and the mechanism elucidation of some reactions. Alcohols such as methanol and isopropanol are prominent hydrogen donors, demonstrating remarkable efficacy in various reductions. Formic acid offers irreversible hydrogenation, preventing the occurrence of reverse reactions, and is extensively utilized in chiral compound synthesis. Unconventional donors such as 1,4-cyclohexadiene and glycerol have shown a good efficiency in reducing unsaturated compounds, with glycerol additionally serving as a green solvent in some transformations. The compatibility of these donors with various catalysts, substrates, and reaction conditions were all discussed. Furthermore, this paper outlines future trends which include the utilization of biomass-derived hydrogen donors, the exploration of hydrogen storage materials such as metal-organic frameworks (MOFs), catalyst development for enhanced activity and recyclability, and the utilization of eco-friendly solvents such as glycerol and ionic liquids. Innovative heating methods, diverse base materials, and continued research into catalyst-hydrogen donor interactions are aimed to shape the future of catalytic transfer hydrogenation, enhancing its selectivity and efficiency across various industries and applications.
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Affiliation(s)
- Batoul Taleb
- Platform for Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 6573/14, Lebanon; (B.T.); (R.J.); (M.A.A.); (G.K.); (A.H.)
- Department of Chemistry, Faculty of Science, Beirut Arab University, Debbieh P.O. Box 11-5020, Lebanon
| | - Rabih Jahjah
- Platform for Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 6573/14, Lebanon; (B.T.); (R.J.); (M.A.A.); (G.K.); (A.H.)
| | - David Cornu
- Institut Européen des Membranes (IEM), UMR 5635, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, 34095 Montpellier, France;
| | - Mikhael Bechelany
- Institut Européen des Membranes (IEM), UMR 5635, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, 34095 Montpellier, France;
- Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology (GUST), Mubarak Al-Abdullah 32093, Kuwait
| | - Mohamad Al Ajami
- Platform for Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 6573/14, Lebanon; (B.T.); (R.J.); (M.A.A.); (G.K.); (A.H.)
| | - Ghenwa Kataya
- Platform for Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 6573/14, Lebanon; (B.T.); (R.J.); (M.A.A.); (G.K.); (A.H.)
- Institut Européen des Membranes (IEM), UMR 5635, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, 34095 Montpellier, France;
| | - Akram Hijazi
- Platform for Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 6573/14, Lebanon; (B.T.); (R.J.); (M.A.A.); (G.K.); (A.H.)
| | - Mohammad H. El-Dakdouki
- Department of Chemistry, Faculty of Science, Beirut Arab University, Debbieh P.O. Box 11-5020, Lebanon
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23
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Nath S, Yadav E, Raghuvanshi A, Singh AK. Ru(II) Complexes with Protic- and Anionic-Naked-NHC Ligands for Cooperative Activation of Small Molecules. Chemistry 2023; 29:e202301971. [PMID: 37377294 DOI: 10.1002/chem.202301971] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
A set of ruthenium(II)-protic-N-heterocyclic carbene complexes, [Ru(NNCH )(PPh3 )2 (X)]Cl (1, X=Cl and 2, X=H) and their deprotonated forms [Ru(NNC)(PPh3 )2 (X)] (1', X=Cl and 2', X=H), in which NNC is a new unsymmetrical pincer ligand, are reported. The four complexes are interconvertible by simple acid-base chemistry. The combined theoretical and spectroscopic investigations indicate charge segregation in anionic-NHC complexes (1' and 2') and can be described from a Lewis pair perspective. The chemical reactivity of deprotonated complex 1' shows cooperative small molecule activation. Complex 1' activates H-H bond of hydrogen, C(sp3 )-I bond of iodomethane, and C(sp)-H bond of phenylacetylene. The activation of CO2 using anionic NHC complex 1' at moderate temperature and ambient pressure and subsequent conversion to formate is also described. All the new compounds have been characterized using ESI-MS, 1 H, 13 C, and 31 P NMR spectroscopy. Molecular structures of 1, 2, and 2' have also been determined with single-crystal X-ray diffraction. The cooperative small molecule activation perspective broadens the scope of potential applications of anionic-NHC complexes in small molecule activation, including the conversion of carbon dioxide to formate, a much sought after reaction in the renewable energy and sustainable development domains.
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Affiliation(s)
- Shambhu Nath
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Ekta Yadav
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Abhinav Raghuvanshi
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Amrendra K Singh
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
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24
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Wang Z, Ma N, Lu X, Liu M, Liu T, Liu Q, Solan GA, Sun WH. Robust and efficient transfer hydrogenation of carbonyl compounds catalyzed by NN-Mn(I) complexes. Dalton Trans 2023; 52:10574-10583. [PMID: 37458677 DOI: 10.1039/d3dt02022c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
A series of manganese(I) carbonyl complexes bearing structurally related NN- and NNN-chelating ligands have been synthesized and assessed as catalysts for transfer hydrogenation (TH). Notably, the NN-systems based on N-R functionalized 5,6,7,8-tetrahydroquinoline-8-amines, proved the most effective in the manganese-promoted conversion of acetophenone to 1-phenylethanol. In particular, the N-isopropyl derivative, Mn1, when conducted in combination with t-BuONa, was the standout performer mediating not only the reduction of acetophenone but also a range of carbonyl substrates including (hetero)aromatic-, aliphatic- and cycloalkyl-containing ketones and aldehydes with especially high values of TON (up to 17 200; TOF of 3550 h-1). These findings, obtained through a systematic variation of the N-R group of the NN ligand, are consistent with an outer-sphere mechanism for the hydrogen transfer. As a more general point, this Mn-based catalytic TH protocol offers an attractive and sustainable alternative for producing alcoholic products from carbonyl substrates.
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Affiliation(s)
- Zheng Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Ning Ma
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Xiaochi Lu
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Ming Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Tian Liu
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Qingbin Liu
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Gregory A Solan
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK.
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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25
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Shimoi R, Saito Y, Miura Y, Nakagawa-Goto K. Total Synthesis of Waltherione A, a Quinolone Alkaloid Fused with Oxabicyclo[3.2.1]octane. Org Lett 2023; 25:4755-4758. [PMID: 37347116 DOI: 10.1021/acs.orglett.3c01837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
Waltherione A (1), a unique quinolone alkaloid fused with oxabicyclo[3.2.1]octane, was isolated originally from Waltheria douradinha and recently by us from a methanol extract of Melochia umbellata along with the related 3,4-dimethoxyquinoline paliasanines A-E. Compound 1 showed selective cytotoxicity against A549 and MCF-7 cell lines. Its interesting structural and biological features prompted several attempts at total synthesis and clarification of the absolute configuration, although none were successful to date. Now, we have accomplished the first total synthesis of 1 starting from commercially available benzosuberone in 21 steps as well as elucidated its absolute configuration.
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Affiliation(s)
- Ryosuke Shimoi
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Yohei Saito
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Yuta Miura
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Kyoko Nakagawa-Goto
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
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26
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Tomoya K, Komiya K, Nakajima D, Umekubo N, Yokoshima S. Total Synthesis of Kopsone. Org Lett 2023; 25:2718-2721. [PMID: 37036762 DOI: 10.1021/acs.orglett.3c00838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
A total synthesis of kopsone was achieved, featuring stereoselective preparation of an acyclic aldehyde having a protected hydroxylamine moiety via Ireland-Claisen rearrangement and intramolecular cycloaddition of an eight-membered cyclic nitrone to form the 2-azabicyclo[3.3.1]nonane skeleton.
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Affiliation(s)
- Kazutoshi Tomoya
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Kazuaki Komiya
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Daisuke Nakajima
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Nariyoshi Umekubo
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya 464-8601, Japan
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27
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Kumar R, Khanna Y, Kaushik P, Kamal R, Khokhar S. Recent Advancements on Metal-Free Vicinal Diamination of Alkenes: Synthetic Strategies and Mechanistic Insights. Chem Asian J 2023; 18:e202300017. [PMID: 36869415 DOI: 10.1002/asia.202300017] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/25/2023] [Accepted: 03/03/2023] [Indexed: 03/05/2023]
Abstract
The oxidative aminative vicinal difunctionalization of alkenes or related chemical feedstocks has emerged as sustainable and multipurpose strategies that can efficiently construct two -N bonds, and simultaneously prepare the synthetically fascinating molecules and catalysis in organic synthesis that typically required multi-step reactions. This review summarized the impressive breakthroughs on synthetic methodologies (2015-2022) documented especially over inter/intra-molecular vicinal diamination of alkenes with electron-rich or deficient diverse nitrogen sources. These unprecedented strategies predominantly involved iodine-based reagents/catalysts, which resent the interest of organic chemists due to their impressive role as flexible, non-toxic, and environmentally friendly reagents, resulting in a wide variety of synthetically useful organic molecules. Moreover, the information collected also describes the significant role of catalyst, terminal oxidant, substrate scope, synthetic applications, and their unsuccessful results to highlight the limitations. Special emphasis has been given to proposed mechanistic pathways to determine the key factors governing the issues of regioselectivity, enantioselectivity, and diastereoselectivity ratios.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Yugam Khanna
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Parul Kaushik
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (INDIA
| | - Raj Kamal
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
| | - Shiwani Khokhar
- Department of Chemistry, Kurukshetra University, Kurukshetra, 136119, Haryana, INDIA
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28
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Yang W, Filonenko GA, Pidko EA. Performance of homogeneous catalysts viewed in dynamics. Chem Commun (Camb) 2023; 59:1757-1768. [PMID: 36683401 PMCID: PMC9910057 DOI: 10.1039/d2cc05625a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Effective assessment of catalytic performance is the foundation for the rational design and development of new catalysts with superior performance. The ubiquitous screening/optimization studies use reaction yields as the sole performance metric in an approach that often neglects the complexity of the catalytic system and intrinsic reactivities of the catalysts. Using an example of hydrogenation catalysis, we examine the transient behavior of catalysts that are often encountered in activation, deactivation and catalytic turnover processes. Each of these processes and the reaction environment in which they take place are gradually shown to determine the real-time catalyst speciation and the resulting kinetics of the overall catalytic reaction. As a result, the catalyst performance becomes a complex and time-dependent metric defined by multiple descriptors apart from the reaction yield. This behaviour is not limited to hydrogenation catalysis and affects various catalytic transformations. In this feature article, we discuss these catalytically relevant descriptors in an attempt to arrive at a comprehensive depiction of catalytic performance.
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Affiliation(s)
- Wenjun Yang
- Inorganic Systems Engineering group, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
| | - Georgy A. Filonenko
- Inorganic Systems Engineering group, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 92629 HZDelftThe Netherlands
| | - Evgeny A. Pidko
- Inorganic Systems Engineering group, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 92629 HZDelftThe Netherlands
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29
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Dangalov M, Fernández-Figueiras A, Ravutsov MA, Vakarelska E, Marinova MK, Candeias NR, Simeonov SP. Ru-Catalyzed Isomerization of Achmatowicz Derivatives: A Sustainable Route to Biorenewables and Bioactive Lactones. ACS Catal 2023; 13:1916-1925. [PMID: 36776384 PMCID: PMC9904008 DOI: 10.1021/acscatal.2c04867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/03/2023] [Indexed: 01/20/2023]
Abstract
A Ru-catalyzed isomerization of Achmatowicz derivatives that opens unexplored routes to diversify the biogenic furanic platform is reported. The mechanistic insights of this formally redox-neutral intramolecular process were studied computationally and by deuterium labeling. The transformation proved to be a robust synthetic tool to achieve the synthesis of bioderived-monomers and a series of 4-keto-δ-valerolactones that further enabled the development of a flexible strategy for the synthesis of acetogenins. A concise and protective group-free asymmetric total synthesis of two natural products, namely, (S,S)-muricatacin and the (S,S)-L-factor, is also described.
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Affiliation(s)
- Miroslav Dangalov
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria
| | - Adolfo Fernández-Figueiras
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria
| | - Martin A. Ravutsov
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria
| | - Ekaterina Vakarelska
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria
| | - Maya K. Marinova
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria
| | - Nuno R. Candeias
- LAQV-REQUIMTE,
Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal,Faculty
of Engineering and Natural Sciences, Tampere
University, Korkeakoulunkatu
8, 33101 Tampere, Finland
| | - Svilen P. Simeonov
- Institute
of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl 9, Sofia 1113, Bulgaria,Research
Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal,
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30
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Chen T, Liu W, Gu W, Niu S, Lan S, Zhao Z, Gong F, Liu J, Yang S, Cotman AE, Song J, Fang X. Dynamic Kinetic Resolution of β-Substituted α-Diketones via Asymmetric Transfer Hydrogenation. J Am Chem Soc 2023; 145:585-599. [PMID: 36563320 DOI: 10.1021/jacs.2c11149] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Developing innovative dynamic kinetic resolution (DKR) modes and achieving the highly regio- and enantioselective semihydrogenation of unsymmetrical α-diketones are two formidable challenges in the field of contemporary asymmetric (transfer) hydrogenation. In this work, we report the highly regio- and stereoselective asymmetric semi-transfer hydrogenation of unsymmetrical α-diketones through a unique DKR mode, which features the reduction of the carbonyl group distal from the labile stereocenter, while the proximal carbonyl remains untouched. Moreover, the protocol affords a variety of enantioenriched acyclic ketones with α-hydroxy-α'-C(sp2)-functional groups, which represent a new product class that has not been furnished in known arts. The utilities of the products have been demonstrated in a series of further transformations including the rapid synthesis of drug molecules. Density functional theory calculations and plenty of control experiments have also been conducted to gain more mechanistic insights into the highly selective semihydrogenation.
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Affiliation(s)
- Ting Chen
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Wenjun Liu
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Wei Gu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Shengtong Niu
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Shouang Lan
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Zhifei Zhao
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Fan Gong
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Jinggong Liu
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
| | - Andrej Emanuel Cotman
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, Ljubljana SI-1000, Slovenia
| | - Jinshuai Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, and Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, Fuzhou 350100, China
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31
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Manganese(I)-Catalyzed Asymmetric (Transfer) Hydrogenation of Ketones: An Insight into the Effect of Chiral PNN and NN ligands. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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An improved total synthesis of tunicamycin V. MethodsX 2023; 10:102095. [PMID: 36911209 PMCID: PMC9995453 DOI: 10.1016/j.mex.2023.102095] [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: 11/30/2022] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
The tunicamycins are important biochemical tools to study N-linked glycosylation and protein misfolding in cancer biochemistry fields. We reported a convergent synthesis of tunicamycin V with 21% overall yield from D-galactal. We have further optimized our original synthetic scheme by increasing the selectivity of azidonitration of the galactal derivative and developing a one-pot Büchner-Curtius-Schlotterbeck reaction. An improved synthetic scheme reported here enables the synthesis of tunicamycin V in 33% overall yield. In this article, we describe detailed procedures for a gram-scale synthesis of the key intermediate 12 and synthesizing 100 mg of tunicamycin V (1) from commercially available D-galctal-4,5-acetonide. All chemical steps have been repeated multiple times.•Highly selective azidonitration of N-(((3aR,4R,7aR)-2,2-dimethyl-3a,7a-dihydro-4H-[1,3]dioxolo[4,5-c]pyran-4-yl)methyl)acetamide (D-galctal-4,5-acetonide) to form 2-azido-2-deoxy-α/β-D-galactopyranoside derivatives.•Optimized Büchner-Curtius-Schlotterbeck (BCS) reaction procedure for the tunicamycin core structure.•Full detail on the 15-chemical step synthesis of tunicamycin V.
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33
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Wang F, Zhang Z, Chen Y, Ratovelomanana-Vidal V, Yu P, Chen GQ, Zhang X. Stereodivergent synthesis of chiral succinimides via Rh-catalyzed asymmetric transfer hydrogenation. Nat Commun 2022; 13:7794. [PMID: 36528669 PMCID: PMC9759521 DOI: 10.1038/s41467-022-35124-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 11/18/2022] [Indexed: 12/23/2022] Open
Abstract
Chiral succinimide moieties are ubiquitous in biologically active natural products and pharmaceuticals. Until today, despite the great interest, little success has been made for stereodivergent synthesis of chiral succinimides. Here, we report a general and efficient method for accessing 3,4-disubstituted succinimides through a dynamic kinetic resolution strategy based on asymmetric transfer hydrogenation. The Rh catalyst system exhibit high activities, enantioselectivities, and diastereoselectivities (up to 2000 TON, up to >99% ee, and up to >99:1 dr). Products with syn- and anti-configuration are obtained separately by control of the reaction conditions. For the N-unprotected substrates, both the enol and the imide group can be reduced by control of reaction time and catalyst loading. In addition, the detailed reaction pathway and origin of stereoselectivity are elucidated by control experiments and theoretical calculations. This study offers a straightforward and stereodivergent approach to the valuable enantioenriched succinimides (all 4 stereoisomers) from cheap chemical feedstocks in a single reaction step.
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Affiliation(s)
- Fangyuan Wang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Zongpeng Zhang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Yu Chen
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Virginie Ratovelomanana-Vidal
- grid.4444.00000 0001 2112 9282PSL University, Chimie ParisTech, CNRS, Institute1 of Chemistry for Life and Health Sciences, CSB2D team, 75005 Paris, France
| | - Peiyuan Yu
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Gen-Qiang Chen
- grid.263817.90000 0004 1773 1790Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Xumu Zhang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
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34
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Moore AS, Stanley LM. Nickel-Catalyzed Formation of α-Substituted γ-Amino Ketones via Alkene Carboacylation. Org Lett 2022; 24:8959-8963. [DOI: 10.1021/acs.orglett.2c03413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Austin S. Moore
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Levi M. Stanley
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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35
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Qi H, Wang L, Sun Q, Sun W. Asymmetric transfer hydrogenation of quinoline derivatives catalyzed by chiral iridium-imidazoline complex in water. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Li L, Ma N, Chen Q, Sun H, Tian J, Xu Q, Li C, Zhang L. Iridium-catalyzed asymmetric transfer hydrogenation of aromatic ketones with a cinchona alkaloid derived NNP ligand. Org Biomol Chem 2022; 20:7936-7941. [PMID: 36177951 DOI: 10.1039/d2ob01422j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iridium complex generated in situ from [Ir(COD)Cl]2 and a cinchona alkaloid derived NNP ligand has been developed for the asymmetric transfer hydrogenation of aromatic ketones. In this study, 30 aromatic ketones and heteroaryl ketones were hydrogenated to produce valuable chiral alcohols with up to 99% ee using i-PrOH as the hydrogen source and the solvent. The easily prepared Ir(L8)(COD)Cl also exhibited excellent activity and enantioselectivity in asymmetric transfer hydrogenation of aromatic ketones with a high S/C ratio (up to 2000).
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Affiliation(s)
- Linlin Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Nana Ma
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Qian Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Hao Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Jie Tian
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Qian Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Chun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
| | - Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550004, People's Republic of China.
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37
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Zheng Y, Wang Z, Ye Z, Tang K, Xie Z, Xiao J, Xiang H, Chen K, Chen X, Yang H. Regioselective Access to Vicinal Diamines by Metal‐Free Photosensitized Amidylimination of Alkenes with Oxime Esters. Angew Chem Int Ed Engl 2022; 61:e202212292. [DOI: 10.1002/anie.202212292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Zhu‐Jun Wang
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Zhi‐Peng Ye
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Kai Tang
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Zhen‐Zhen Xie
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Jun‐An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics Nanning Normal University Nanning 530001 Guangxi P. R. China
| | - Hao‐Yue Xiang
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 Henan P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Xiao‐Qing Chen
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 P. R. China
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38
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Zheng Y, Wang ZJ, Ye ZP, Tang K, Xie ZZ, Xiao JA, Xiang HY, Chen K, Chen XQ, Yang H. Regioselective Access to Vicinal Diamines by Metal‐Free Photosensitized Amidylimination of Alkenes with Oxime Esters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212292] [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)
- Yu Zheng
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Zhu-Jun Wang
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Zhi-Peng Ye
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Kai Tang
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Zhen-Zhen Xie
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Jun-An Xiao
- Nanning Normal University Guangxi Key Laboratory of Natural Polymer Chemistry and Physics CHINA
| | - Hao-Yue Xiang
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Kai Chen
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Xiao-Qing Chen
- Central South University School of Chemistry and Chemical Engineering CHINA
| | - Hua Yang
- Central South University School of Chemistry and Chemical Engineering chang sha citylushan south road NO:932 410083 chang sha CHINA
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39
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Enantiocontrolled Preparation of ϒ-Substituted Cyclohexenones: Synthesis and Kinase Activity Assays of Cyclopropyl-Fused Cyclohexane Nucleosides. Int J Mol Sci 2022; 23:ijms23179704. [PMID: 36077100 PMCID: PMC9456008 DOI: 10.3390/ijms23179704] [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: 07/22/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/25/2022] Open
Abstract
The enantioselective preparation of the two isomers of 4-hydroxy-2-cyclohexanone derivatives 1a,b was achieved, starting from a common cyclohexenone, through asymmetric transfer hydrogenation (ATH) reactions using bifunctional ruthenium catalysts. From these versatile intermediates, a stereoselective route to a cytosine analogue built on a bicyclo [4.1.0]heptane scaffold is described. Nucleoside kinase activity assays with this cyclopropyl-fused cyclohexane nucleoside, together with other related nucleosides (2a–e), were performed, showing that thymine- and guanine- containing compounds have affinity for herpes simplex virus Type 1 (HSV-1) thymidine kinase (TK) but not for human cytosolic TK-1, thus pointing to their selectivity for herpetic TKs but not cellular TKs.
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40
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Khamis N, Clarkson GJ, Wills M. Heterocycle-containing Noyori-Ikariya catalysts for asymmetric transfer hydrogenation of ketones. Dalton Trans 2022; 51:13462-13469. [PMID: 35994090 DOI: 10.1039/d2dt02411j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a range of N-(heterocyclesulfonyl)-functionalised Noyori-Ikariya catalysts is described. The complexes were prepared through a short sequence from C2-symmetric 1,2-diphenylethylene-1,2-diamine (DPEN) and were characterised by a range of methods including X-ray crystallography. The complexes were active catalysts for the asymmetric transfer hydrogenation (ATH) of a range of acetophenone derivatives, giving products of high ee in most cases, with notably good results for ortho-substituted acetophenones.
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Affiliation(s)
- Noha Khamis
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK. .,Department of Chemistry, Faculty of science, University of Alexandria, Alexandria, Egypt
| | - Guy J Clarkson
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK.
| | - Martin Wills
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK.
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41
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Mitachi K, Mingle D, Effah W, Sánchez‐Ruiz A, Hevener KE, Narayanan R, Clemons WM, Sarabia F, Kurosu M. Concise Synthesis of Tunicamycin V and Discovery of a Cytostatic DPAGT1 Inhibitor. Angew Chem Int Ed Engl 2022; 61:e202203225. [PMID: 35594368 PMCID: PMC9329268 DOI: 10.1002/anie.202203225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Indexed: 11/11/2022]
Abstract
A short total synthesis of tunicamycin V (1), a non-selective phosphotransferase inhibitor, is achieved via a Büchner-Curtius-Schlotterbeck type reaction. Tunicamycin V can be synthesized in 15 chemical steps from D-galactal with 21 % overall yield. The established synthetic scheme is operationally very simple and flexible to introduce building blocks of interest. The inhibitory activity of one of the designed analogues 28 against human dolichyl-phosphate N-acetylglucosaminephosphotransferase 1 (DPAGT1) is 12.5 times greater than 1. While tunicamycins are cytotoxic molecules with a low selectivity, the novel analogue 28 displays selective cytostatic activity against breast cancer cell lines including a triple-negative breast cancer.
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Affiliation(s)
- Katsuhiko Mitachi
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - David Mingle
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - Wendy Effah
- Department of Medicine University of Tennessee Health Science Center 19 S. Manassas, Room 120 Memphis TN 38103 USA
| | - Antonio Sánchez‐Ruiz
- Faculty of Pharmacy Campus de Albacete Universidad de Castilla-La Mancha Avda. Dr. José María Sánchez Ibáñez S/N 02008 Albacete Spain
| | - Kirk E. Hevener
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - Ramesh Narayanan
- Department of Medicine University of Tennessee Health Science Center 19 S. Manassas, Room 120 Memphis TN 38103 USA
| | - William M. Clemons
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. Pasadena CA 91125 USA
| | - Francisco Sarabia
- Department of Organic Chemistry Faculty of Sciences Universidad de Málaga, Campus de Teatinos 29071 Málaga Spain
| | - Michio Kurosu
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
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42
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Hafeez J, Bilal M, Rasool N, Hafeez U, Adnan Ali Shah S, Imran S, Amiruddin Zakaria Z. Synthesis of Ruthenium complexes and their catalytic applications: A review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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43
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Mitachi K, Mingle D, Effah W, Sánchez-Ruiz A, Hevener KE, Narayanan R, Clemons WM, Sarabia F, Kurosu M. Concise Synthesis of Tunicamycin V and Discovery of a Cytostatic DPAGT1 Inhibitor. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Katsuhiko Mitachi
- The University of Tennessee Health Science Center College of Pharmacy Pharmacy 881 Madison AvenueROOM 557 38163 MEMPHS UNITED STATES
| | - David Mingle
- The University of Tennessee Health Science Center College of Pharmacy Pharmacy 881 MADISON AVE 38163 MEMPHS UNITED STATES
| | - Wendy Effah
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine Medicine UNITED STATES
| | | | - Kirk E. Hevener
- UTHSC College of Pharmacy Memphis: The University of Tennessee Health Science Center College of Pharmacy Pharmacy UNITED STATES
| | - Ramesh Narayanan
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine Medicine 19, S. Manassas 38013 Memphis UNITED STATES
| | - William M. Clemons
- Caltech: California Institute of Technology Chemistry and Chemical Engineering UNITED STATES
| | - Francisco Sarabia
- University of Malaga: Universidad de Malaga Organic Chemistry UNITED STATES
| | - Michio Kurosu
- UTHSC College of Pharmacy Memphis: The University of Tennessee Health Science Center College of Pharmacy Department of Pharmaceutical Sciences, College of Pharmacy 881 MADISON AVEROOM 557 38163 Memphis UNITED STATES
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44
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Zheng Y, Wills M. Asymmetric transfer hydrogenation of boronic acid pinacol ester (Bpin)-containing acetophenones. Org Biomol Chem 2022; 20:3742-3746. [PMID: 35438123 DOI: 10.1039/d2ob00569g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A series of Bpin-containing acetophenone derivatives were reduced by asymmetric transfer hydrogenation (ATH), using Noyori-Ikariya catalysts, with formic acid/triethylamine, to alcohols in high ee when the Bpin is in the para- or meta-position. Substrates containing ortho-Bpin groups were reduced in lower ee, with formation of a cyclic boron-containing group. The products were converted to substituted derivatives using Pd-catalysed coupling reactions. The results represent the first examples of ATH of Bpin-containing ketones.
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Affiliation(s)
- Ye Zheng
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK.
| | - Martin Wills
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK.
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45
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Trobe M, Blesl J, Vareka M, Schreiner T, Breinbauer R. A Modular Synthesis of Teraryl-Based α-Helix Mimetics, Part 4: Core Fragments with Two Halide Leaving Groups Featuring Side Chains of Proteinogenic Amino Acids. European J Org Chem 2022; 2022:e202101279. [PMID: 35910460 PMCID: PMC9304293 DOI: 10.1002/ejoc.202101279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/08/2022] [Indexed: 12/03/2022]
Abstract
Teraryl-based α-helix mimetics have proven to be useful compounds for the inhibition of protein-protein interactions (PPI). We have developed a modular and flexible approach for the synthesis of teraryl-based α-helix mimetics using a benzene core unit featuring two halide leaving groups of differentiated reactivity in the Pd-catalyzed cross-coupling used for teraryl assembly. The use of para-bromo iodoarene core fragments resolved the issue of hydrolysis during cross-coupling that was observed when using triflate as a leaving group. We report a complete set of para-bromoiodoarene core fragments decorated with side chains of all proteinogenic amino acids relevant for PPI (Ala, Arg, Asn, Asp, Cys, Gln, Glu, His, Ile, Leu, Lys, Met, Phe, Ser, Thr, Trp, Tyr and Val). In order to be compatible with general cross-coupling conditions, some of the nucleophilic side chains had to be provided in a protected form to serve as stable building blocks.
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Affiliation(s)
- Melanie Trobe
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
| | - Julia Blesl
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
| | - Martin Vareka
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
| | - Till Schreiner
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
| | - Rolf Breinbauer
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
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46
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Foucher AC, Yang S, Rosen DJ, Lee JD, Huang R, Jiang Z, Barrera FG, Chen K, Hollyer GG, Friend CM, Gorte RJ, Murray CB, Stach EA. Synthesis and Characterization of Core-Shell Cu-Ru, Cu-Rh, and Cu-Ir Nanoparticles. J Am Chem Soc 2022; 144:7919-7928. [PMID: 35471010 DOI: 10.1021/jacs.2c02538] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Optimizing the use of expensive precious metals is critical to developing sustainable and low-cost processes for heterogeneous catalysis or electrochemistry. Here, we report a synthesis method that yields core-shell Cu-Ru, Cu-Rh, and Cu-Ir nanoparticles with the platinum-group metals segregated on the surface. The synthesis of Cu-Ru, Cu-Rh, and Cu-Ir particles allows maximization of the surface area of these metals and improves catalytic performance. Furthermore, the Cu core can be selectively etched to obtain nanoshells of the platinum-group metal components, leading to a further increase in the active surface area. Characterization of the samples was performed with X-ray absorption spectroscopy, X-ray powder diffraction, and ex situ and in situ transmission electron microscopy. CO oxidation was used as a reference reaction: the three core-shell particles and derivatives exhibited promising catalyst performance and stability after redox cycling. These results suggest that this synthesis approach may optimize the use of platinum-group metals in catalytic applications.
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Affiliation(s)
- Alexandre C Foucher
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Shengsong Yang
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daniel J Rosen
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jennifer D Lee
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Renjing Huang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zhiqiao Jiang
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Francisco G Barrera
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kelly Chen
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - George G Hollyer
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Cynthia M Friend
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.,John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Raymond J Gorte
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.,Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher B Murray
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eric A Stach
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.,Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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47
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Zhong YL, Ji Y, Wang H, Wang X, Gauthier DR. Highly Enantioselective Rhodium-Catalyzed Transfer Hydrogenation of Tetrasubstituted Olefins: Application toward the Synthesis of GPR40 Agonist MK-2305. Org Lett 2022; 24:3254-3258. [PMID: 35467884 DOI: 10.1021/acs.orglett.2c01021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient enantioselective synthesis for the potent G-protein-coupled receptor 40 agonist MK-2305 was developed. The key tetrasubstituted olefin was prepared via a stereoselective Mukaiyama aldol reaction/elimination sequence. The highly enantioselective rhodium-catalyzed transfer hydrogenation of the tetrasubstituted olefin afforded the target compound MK-2305 in excellent optical and chemical purity. The key asymmetric transfer hydrogenation proceeds in excellent yields and enantioselectivities for a variety of substrates. The superior reactivity of the tethered catalysts was revealed by NMR studies.
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Affiliation(s)
- Yong-Li Zhong
- Department of Process Research and Development, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Yining Ji
- Department of Process Research and Development, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Heather Wang
- Department of Process Research and Development, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Xiao Wang
- Department of Process Research and Development, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Donald R Gauthier
- Department of Process Research and Development, Merck & Co., Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
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48
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Kushwaha R, Kumar A, Saha S, Bajpai S, Yadav AK, Banerjee S. Os(II) complexes for catalytic anticancer therapy: recent update. Chem Commun (Camb) 2022; 58:4825-4836. [PMID: 35348152 DOI: 10.1039/d2cc00341d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The recent dramatic enhancement in cancer-related mortality and the drawbacks (side effects and resistance) of Pt-based first-generation chemotherapeutics have escalated the need for new cancer medicines with unique anticancer activities for better human life. To overcome the demerits of Pt-based cancer drugs, the concept of catalytic anticancer agents has recently been presented in the field of anticancer metallodrug development research. Many intracellular transformations in cancer cells are catalyzed by metal complexes, including pyruvate reduction to lactate, NAD(P)+ reduction to NAD(P)H and vice versa, and the conversion of 3O2 to reactive oxygen species (ROS). These artificial in-cell changes with non-toxic and catalytic dosages of metal complexes have been shown to disrupt several essential intracellular processes which ultimately cause cell death. This new approach could develop potent next-generation catalytic anticancer drugs. In this context, recently, several 16/18 electron Os(II)-based complexes have shown promising catalytic anticancer activities with unique anticancer mechanisms. Herein, we have delineated the catalytic anticancer activity of Os(II) complexes from a critical viewpoint. These catalysts are reported to induce the in-cell catalytic transfer hydrogenation of pyruvate and important quinones to create metabolic disorder and photocatalytic ROS generation for oxidative stress generation in cancer cells. Overall, these Os(II) catalysts have the potential to be novel catalytic cancer drugs with new anticancer mechanisms.
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Affiliation(s)
- Rajesh Kushwaha
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
| | - Ashish Kumar
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
| | - Souvik Saha
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
| | - Sumit Bajpai
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
| | - Ashish Kumar Yadav
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
| | - Samya Banerjee
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India.
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49
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Chen F, Romero-Canelón I, Habtemariam A, Song JI, Banerjee S, Clarkson GJ, Song L, Prokes I, Sadler PJ. Effect of cysteine thiols on the catalytic and anticancer activity of Ru(II) sulfonyl-ethylenediamine complexes. Dalton Trans 2022; 51:4447-4457. [PMID: 35226015 DOI: 10.1039/d1dt03856g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have synthesized a series of novel substituted sulfonyl ethylenediamine (en) RuII arene complexes 1-8 of [(η6-arene)Ru(R1-SO2-EnBz)X], where the arene is benzene, HO(CH2)2O-phenyl or biphenyl (biph), X = Cl or I, and R1 is phenyl, 4-Me-phenyl, 4-NO2-phenyl or dansyl. The 'piano-stool' structure of complex 3, [(η6-biph)Ru(4-Me-phenyl-SO2-EnBz)I], was confirmed by X-ray crystallography. The values of their aqua adducts were determined to be high (9.1 to 9.7). Complexes 1-8 have antiproliferative activity against human A2780 ovarian, and A549 lung cancer cells with IC50 values ranging from 4.1 to >50 μM, although, remarkably, complex 7 [(η6-biph)Ru(phenyl-SO2-EnBz)Cl] was inactive towards A2780 cells, but as potent as the clinical drug cisplatin towards A549 cells. All these complexes also showed catalytic activity in transfer hydrogenation (TH) of NAD+ to NADH with sodium formate as hydride donor, with TOFs in the range of 2.5-9.7 h-1. The complexes reacted rapidly with the thiols glutathione (GSH) and N-acetyl-L-cysteine (NAC), forming dinuclear bridged complexes [(η6-biph)2Ru2(GS)3]2- or [(η6-biph)2Ru2(NAC-H)3]2-, with the liberation of the diamine ligand which was detected by LC-MS. In addition, the switching on of fluorescence for complex 8 in aqueous solution confirmed release of the chelated DsEnBz ligand in reactions with these thiols. Reactions with GSH hampered the catalytic TH of NAD+ to NADH due to the decomposition of the complexes. Co-administration to cells of complex 2 [(η6-biph)Ru(4-Me-phenyl-SO2-EnBz)Cl] with L-buthionine sulfoximine (L-BSO), an inhibitor of GSH synthesis, partially restored the anticancer activity towards A2780 ovarian cancer cells. Complex 2 caused a concentration-dependent G1 phase cell cycle arrest, and induced a significant level of reactive oxygen species (ROS) in A2780 human ovarian cancer cells. The amount of induced ROS decreased with increase in GSH concentration, perhaps due to the formation of the dinuclear Ru-SG complex.
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Affiliation(s)
- Feng Chen
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK. .,School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Isolda Romero-Canelón
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK. .,School of Pharmacy, University of Birmingham, Birmingham B15 2TT, UK
| | - Abraha Habtemariam
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Ji-Inn Song
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Samya Banerjee
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK. .,Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, UP-221005, India
| | - Guy J Clarkson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Lijiang Song
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Ivan Prokes
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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Amason EK, Rajabimoghadam K, Baughman NN, Ghareeb CR, Bourgeois SK, Keuk C, Manacsa G, Popp BV, Garcia-Bosch I, Ferrence GM, Joslin EE. Synthesis and Reactivity of Ampy-Based Ruthenium(II) Catalysts for Transfer Hydrogenation of Ketones. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Edith K. Amason
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
| | | | - Notashia N. Baughman
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - C. Roland Ghareeb
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
| | - Samantha K. Bourgeois
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
| | - Channita Keuk
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
| | - Gayle Manacsa
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
| | - Brian V. Popp
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Isaac Garcia-Bosch
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Gregory M. Ferrence
- Department of Chemistry, Illinois State University, Normal, Illinois 61790, United States
| | - Evan E. Joslin
- Department of Chemistry, The University of the South, Sewanee, Tennessee 22903, United States
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