1
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Xi ZW, He Y, Liu LQ, Wang YC, Zeng HY. Three-Component Domino Reaction of Thioamide, Isonitriles, and Water: Selective Synthesis of 1,2,4-Thiadiazolidin-3-ones and ( E)- N-(1,2-Diamino-2-thioxoethylidene)benzamides. J Org Chem 2024; 89:8315-8325. [PMID: 36693028 DOI: 10.1021/acs.joc.2c01969] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The three-component domino reaction of thioamides, benzyl isocyanide, and water in the presence of a catalytic amount of both Pd(dppf)Cl2 and Cu(OAc)2 afforded novel 1,2,4-thiadiazolidin-3-one cyclic compounds, whereas the same reaction with tertiary alkylisonitriles in the presence of rare earth metal salt [La(OTf)3] resulted in (E)-N-(1,2-diamino-2-thioxoethylidene)benzamide open-chain products. This divergent reaction enabled the one-pot construction of five (N-S, C-S, C-O, and two C-N) or four (C-S, C-N, C-O, and C-C) new chemical bonds. Mechanism studies indicate that the oxygen atom of the product was derived from H2O.
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Affiliation(s)
- Zhi-Wei Xi
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China
| | - Yan He
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China
| | - Li-Qiu Liu
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China
| | - Ying-Chun Wang
- National Demonstration Center for Experimental Chemistry Education, Hunan Engineering Laboratory for Analyse and Drugs Development of Ethnomedicine in Wuling Mountains, Jishou University, Jishou 416000, P. R. China
| | - Hui-Ying Zeng
- The State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Road, Lanzhou 730000, P. R. China
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2
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Patil RD, Pratihar S. Ruthenium(II)-Catalyzed Hydrogenation and Tandem (De)Hydrogenation via Metal-Ligand Cooperation: Base- and Solvent-Assisted Switchable Selectivity. J Org Chem 2024; 89:1361-1378. [PMID: 36283058 DOI: 10.1021/acs.joc.2c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A versatile, selective, solvent (methanol vs ethanol)- and base (potassium vs lithium carbonate)-assisted switchable synthesis of saturated ketone and α-methyl saturated ketone from α,β-unsaturated ketone is developed. Mechanistic aspects, evaluated from spectroscopic studies, in situ monitoring of the reaction progress, control studies, and labeling studies, further indicate the involvement of a tandem dehydrogenation-condensation-hydrogenation sequence in the reaction, in which the interconvertible coordination mode (imino N → Ru and amido N-Ru) of coordinated imidazole with Ru(II)-para-cymene is crucial, without which the efficiency and selectivity of the catalyst are completely lost. The catalyst demonstrates good efficiency, selectivity, and functional group tolerance and displays a broad scope (69 examples) for monomethylation and hydrogenation of unsaturated chalcones, double methylation of ketones, and N-methylation of amines.
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Affiliation(s)
- Rahul Daga Patil
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Sanjay Pratihar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
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3
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Hussain A, Sravanthi R, Katta S, Ramachary DB. Two-step, high-yielding total synthesis of antibiotic pyrones. Org Biomol Chem 2024; 22:554-560. [PMID: 38116605 DOI: 10.1039/d3ob01923c] [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: 12/21/2023]
Abstract
A simple two-step dialkylation protocol was developed to synthesize biologically active antibiotics photopyrones, pseudopyronines, and violapyrones from bio-renewable triacetate lactone in excellent yields. These pyrones are functionally modified into another set of pyrone natural products by a single O-methylation reaction. The high-yielding gram scale synthesis of four natural products [pseudopyronine A, photopyrone A, pseudopyronine B and photopyrone C] demonstrated the viability for industrial applications.
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Affiliation(s)
- Akram Hussain
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
| | - Revoju Sravanthi
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
- Pharmacognosy and Phytochemistry Division, Gitam Institute of Pharmacy, Gitam Deemed to be University, Visakhapatnam, 530 045, Andhra Pradesh, India
| | - Sunitha Katta
- Pharmacognosy and Phytochemistry Division, Gitam Institute of Pharmacy, Gitam Deemed to be University, Visakhapatnam, 530 045, Andhra Pradesh, India
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4
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Peshkov AA, Gapanenok D, Puzyk A, Amire N, Novikov AS, Martynova SD, Kalinin S, Dar'in D, Peshkov VA, Krasavin M. Substrate-Controlled Three-Component Synthesis of Diverse Fused Heterocycles. J Org Chem 2023; 88:10508-10524. [PMID: 37459446 DOI: 10.1021/acs.joc.3c00497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A chemoselective strategy toward a variety of fused heterocyclic scaffolds relying on a three-component condensation of heterocyclic ketene aminals (HKAs) or corresponding thioaminals with aryl glyoxals and cyclic 1,3-dicarbonyl compounds has been developed and explored. Depending on the applied combination of substrates, the strategy can be tuned to provide straightforward access to imidazo[1,2-a]quinoline, pyrrolo[1,2-a]imidazole, and pyrrolo[2,1-b]thiazole frameworks.
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Affiliation(s)
- Anatoly A Peshkov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Nazarbayev University, Department of Chemistry, School of Sciences and Humanities, Nur-Sultan 010000, Kazakhstan
| | - Diana Gapanenok
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Aleksandra Puzyk
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Niyaz Amire
- Nazarbayev University, Department of Chemistry, School of Sciences and Humanities, Nur-Sultan 010000, Kazakhstan
| | - Alexander S Novikov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Sofia D Martynova
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Stanislav Kalinin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Vsevolod A Peshkov
- Nazarbayev University, Department of Chemistry, School of Sciences and Humanities, Nur-Sultan 010000, Kazakhstan
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
- Immanuel Kant Baltic Federal University, Kaliningrad 236016, Russian Federation
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5
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Kumar Sharma S. The Importance of Organocatalysis (Asymmetric and Non‐Asymmetric) in Agrochemicals. ChemistrySelect 2023. [DOI: 10.1002/slct.202300204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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6
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Kobatake M, Miyoshi N, Ueno M. One-Pot Tandem Coupling Method for the Short-Step Formal Synthesis of Riccardin C. Chemistry 2023; 29:e202203805. [PMID: 36573022 DOI: 10.1002/chem.202203805] [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: 12/06/2022] [Indexed: 12/28/2022]
Abstract
One-pot reactions reduce reagent amounts and circumvent process treatments, such as work-up and purifications in multi-step reactions. In this study, we achieved the formal total synthesis of riccardin C through a one-pot reaction by simultaneously linking four units through two Sonogashira coupling reactions and one Suzuki coupling reaction, followed by reduction and deprotection. Thus, this one-pot method comprised five steps and did not require the purification of intermediate reaction mixtures, which saves resources, such as reagents and solvents, and expedites the work process.
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Affiliation(s)
- Miho Kobatake
- Department of Natural Science, Graduate School of Sciences and Technology, Tokushima University, 2-1 Minami-jousanjima, Tokushima, 770-8506, Japan
| | - Norikazu Miyoshi
- Department of Natural Science, Graduate School of Sciences and Technology, Tokushima University, 2-1 Minami-jousanjima, Tokushima, 770-8506, Japan
| | - Masaharu Ueno
- Department of Natural Science, Graduate School of Sciences and Technology, Tokushima University, 2-1 Minami-jousanjima, Tokushima, 770-8506, Japan
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7
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Mazibuko M, Jeena V. Synthesis of 2,4,5-Trisubstituted Oxazoles from Copper-Mediated Benzylic sp 3 C-H Aerobic Oxidative Annulation of Ketones and Amines via a Cascade Reaction. J Org Chem 2023; 88:1227-1234. [PMID: 36575054 DOI: 10.1021/acs.joc.2c02148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The functionalization of sp3 carbons is deemed challenging in synthetic organic chemistry yet has tremendous potential in producing potent organic compounds. A facile synthesis of 2,4,5-trisubstituted oxazoles through an oxidative, copper-catalyzed, and solvent-free annulation is described. Various arylated oxazoles were efficaciously synthesized at a mild temperature from readily available substrates under a molecular oxygen atmosphere. Preliminary mechanistic studies suggested that the reaction proceeds via an anionic-type mechanism and indicated the formation of a keto-imine intermediate. The reaction is notable for the abstraction of six hydrogen atoms, the functionalization of one sp2 carbon and two sp3 carbons, and the formation of C-O and C-N bonds.
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Affiliation(s)
- Mncedisi Mazibuko
- School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Pietermaritzburg 3209, South Africa
| | - Vineet Jeena
- School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Pietermaritzburg 3209, South Africa
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8
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Li J, Huang JH, Wang JY, Xu ZG, Chen ZZ, Lei J. An intramolecular hydrogen bond-promoted "green" Ugi cascade reaction for the synthesis of 2,5-diketopiperazines with anticancer activity. RSC Adv 2022; 12:33175-33179. [PMID: 36425196 PMCID: PMC9678023 DOI: 10.1039/d2ra04958a] [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: 08/08/2022] [Accepted: 09/23/2022] [Indexed: 11/23/2022] Open
Abstract
We report a "green chemistry"-based Ugi cascade reaction to furnish a series of 2,5-diketopiperazines (through nucleophilic attack of amides upon ketones in Ugi adducts) at moderate-to-good yields. Investigation with the MTT assay revealed compound (±) 5c to exhibit potent anticancer activities against acute myeloid leukaemia (MV411; IC50 = 1.7 μM) and acute T lymphocyte leukaemia (Jurkat; IC50 = 5.7 μM) cell lines.
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Affiliation(s)
- Jie Li
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jiu Hong Huang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jing Ya Wang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Zhi Gang Xu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Zhong Zhu Chen
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jie Lei
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
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9
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Romaniszyn M, Skrzyńska A, Dybowska J, Albrecht Ł. Organocatalytic Asymmetric Approach to γ,δ-Functionalization of 3-Cyano-4-styrylcoumarins via Bifunctional Catalysis. Org Lett 2022; 24:7722-7726. [PMID: 36252955 DOI: 10.1021/acs.orglett.2c02836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel organocatalytic reaction cascade between 3-cyano-4-styrylcoumarins and 2-mercaptoacetophenones is described. It is based on stereocontrolled functionalization of cyanocoumarins proceeding in a sequence of thia-Michael/aldol/annulation reactions. This highly diastereo- and enantioselective reaction is realized by employing enantioselective bifunctional catalysis and exhibits a broad substrate scope and excellent functional group tolerance. The synthetic application involves the transformation of the imidoester group, thus opening access to biologically relevant coumarin and δ-lactone-fused products.
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Affiliation(s)
- Marta Romaniszyn
- Institute of Organic Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Anna Skrzyńska
- Institute of Organic Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | | | - Łukasz Albrecht
- Institute of Organic Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
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10
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Becerra D, Abonia R, Castillo JC. Recent Applications of the Multicomponent Synthesis for Bioactive Pyrazole Derivatives. Molecules 2022; 27:molecules27154723. [PMID: 35897899 PMCID: PMC9331265 DOI: 10.3390/molecules27154723] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 12/04/2022] Open
Abstract
Pyrazole and its derivatives are considered a privileged N-heterocycle with immense therapeutic potential. Over the last few decades, the pot, atom, and step economy (PASE) synthesis of pyrazole derivatives by multicomponent reactions (MCRs) has gained increasing popularity in pharmaceutical and medicinal chemistry. The present review summarizes the recent developments of multicomponent reactions for the synthesis of biologically active molecules containing the pyrazole moiety. Particularly, it covers the articles published from 2015 to date related to antibacterial, anticancer, antifungal, antioxidant, α-glucosidase and α-amylase inhibitory, anti-inflammatory, antimycobacterial, antimalarial, and miscellaneous activities of pyrazole derivatives obtained exclusively via an MCR. The reported analytical and activity data, plausible synthetic mechanisms, and molecular docking simulations are organized in concise tables, schemes, and figures to facilitate comparison and underscore the key points of this review. We hope that this review will be helpful in the quest for developing more biologically active molecules and marketed drugs containing the pyrazole moiety.
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Affiliation(s)
- Diana Becerra
- Escuela de Ciencias Química, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia, Avenida Central del Norte, Tunja 150003, Colombia;
| | - Rodrigo Abonia
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, A.A. 25360, Cali 76001, Colombia;
| | - Juan-Carlos Castillo
- Escuela de Ciencias Química, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia, Avenida Central del Norte, Tunja 150003, Colombia;
- Correspondence: ; Tel.: +57-8-740-5626 (ext. 2425)
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11
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Peraka S, Gorachand B, Hussain A, Sravanthi R, Ramachary DB. Organocatalytic One‐pot Synthesis of Pseudo‐Terpenoids. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200674] [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)
- Swamy Peraka
- University of Hyderabad School of Chemistry INDIA
| | | | | | | | - Dhevalapally B. Ramachary
- University of Hyderabad School of Chemistry Prof. C.R.Rao RoadCentral University PostGachi BowliHyderabad 500 046 Hyderabad INDIA
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12
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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13
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López‐Agudo M, Ríos‐Lombardía N, González‐Sabín J, Lavandera I, Gotor‐Fernández V. Chemoenzymatic Oxosulfonylation-Bioreduction Sequence for the Stereoselective Synthesis of β-Hydroxy Sulfones. CHEMSUSCHEM 2022; 15:e202101313. [PMID: 34409744 PMCID: PMC9292901 DOI: 10.1002/cssc.202101313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/26/2021] [Indexed: 06/13/2023]
Abstract
A series of optically active β-hydroxy sulfones has been obtained through an oxosulfonylation-stereoselective reduction sequence in aqueous medium. Firstly, β-keto sulfones were synthesized from arylacetylenes and sodium sulfinates to subsequently develop the carbonyl reduction in a highly selective fashion using alcohol dehydrogenases as biocatalysts. Optimization of the chemical oxosulfonylation reaction was investigated, finding inexpensive iron(III) chloride hexahydrate (FeCl3 ⋅ 6H2 O) as the catalyst of choice. The selection of isopropanol in the alcohol-water media resulted in high compatibility with the enzymatic process for enzyme cofactor recycling purposes, providing a straightforward access to both (R)- and (S)-β-hydroxy sulfones. The practical usefulness of this transformation was illustrated by describing the synthesis of a chiral intermediate of Apremilast. Interestingly, the development of a chemoenzymatic cascade approach avoided the isolation of β-keto sulfone intermediates, which allowed the preparation of chiral β-hydroxy sulfones in high conversion values (83-94 %) and excellent optical purities (94 to >99 % ee).
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Affiliation(s)
- Marina López‐Agudo
- Organic and Inorganic Chemistry DepartmentUniversity of OviedoAvenida Julián Clavería 8Oviedo33006Spain
| | | | | | - Iván Lavandera
- Organic and Inorganic Chemistry DepartmentUniversity of OviedoAvenida Julián Clavería 8Oviedo33006Spain
| | - Vicente Gotor‐Fernández
- Organic and Inorganic Chemistry DepartmentUniversity of OviedoAvenida Julián Clavería 8Oviedo33006Spain
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14
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Pasha MA, Anebouselvy K, Ramachary DB. Lawsone as synthon in the catalytic asymmetric reactions. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Gayathri S, Viswanathamurthi P, Grzegorz Malecki J. Efficient multicomponent synthesis of propargylamines catalyzed by Cu(I) complexes encompassing hydrazone ligands under solvent-free condition. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Yadav J, Dolas AJ, Iype E, Rangan K, Ohshita J, Kumar D, Kumar I. Asymmetric Synthesis of Bridged N-Heterocycles with Tertiary Carbon Center through Barbas Dienamine-Catalysis: Scope and Applications. J Org Chem 2021; 86:17213-17225. [PMID: 34743517 DOI: 10.1021/acs.joc.1c02295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A direct aza-Diels-Alder reaction between 2-aryl-3H-indolin-3-ones and cyclic-enones has been developed to access chiral indolin-3-one fused polycyclic bridged compounds. This method proceeds via proline-catalyzed Barbas-dienamine intermediate formation from various cyclic-enones such as 2-cyclopenten-1-one, 2-cyclohexene-1-one, and 2-cycloheptene-1-one, followed by a reaction with 2-aryl-3H-indol-3-ones. Several indolin-3-ones fusing [2.2.2], [2.2.1], and [3.2.1] skeletons decorated with a tertiary carbon chiral center have been prepared. Computational studies (DFT) supported the observed stereoselectivity in the method. The synthesized compounds have shown exciting photophysical activities and selective sensing of Pd2+ and Fe3+ ions through the fluorescence quenching "switch-off" mode.
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Affiliation(s)
- Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Atul Jankiram Dolas
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Eldhose Iype
- Department of Chemical Engineering, Birla Institute of Technology and Science, Dubai Campus, Dubai 345055, United Arab Emirates
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science, Hyderabad Campus, Hyderabad 500078, Telangana, India
| | - Joji Ohshita
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima City, Hiroshima, 739-8527, Japan
| | - Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
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17
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Madhavachary R, Mallik R, Ramachary DB. Organocatalytic Enantiospecific Total Synthesis of Butenolides. Molecules 2021; 26:molecules26144320. [PMID: 34299595 PMCID: PMC8306825 DOI: 10.3390/molecules26144320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022] Open
Abstract
Biologically important, chiral natural products of butenolides, (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone, lipid metabolites, (+)-ancepsenolide, (+)-homoancepsenolide, mosquito larvicidal butenolide and their analogues were synthesized in very good yields in a sequential one-pot manner by using an organocatalytic reductive coupling and palladium-mediated reductive deoxygenation or organocatalytic reductive coupling and silica-mediated reductive deamination as the key steps.
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18
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González‐Granda S, Lavandera I, Gotor‐Fernández V. Alcohol Dehydrogenases and N‐Heterocyclic Carbene Gold(I) Catalysts: Design of a Chemoenzymatic Cascade towards Optically Active β,β‐Disubstituted Allylic Alcohols. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sergio González‐Granda
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
| | - Vicente Gotor‐Fernández
- Organic and Inorganic Chemistry Department University of Oviedo Avenida Julián Clavería 8 33006 Oviedo Spain
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19
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González-Granda S, Lavandera I, Gotor-Fernández V. Alcohol Dehydrogenases and N-Heterocyclic Carbene Gold(I) Catalysts: Design of a Chemoenzymatic Cascade towards Optically Active β,β-Disubstituted Allylic Alcohols. Angew Chem Int Ed Engl 2021; 60:13945-13951. [PMID: 33721361 DOI: 10.1002/anie.202015215] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/22/2021] [Indexed: 12/14/2022]
Abstract
The combination of gold(I) and enzyme catalysis is used in a two-step approach, including Meyer-Schuster rearrangement of a series of readily available propargylic alcohols followed by stereoselective bioreduction of the corresponding allylic ketone intermediates, to provide optically pure β,β-disubstituted allylic alcohols. This cascade involves a gold N-heterocyclic carbene and an enzyme, demonstrating the compatibility of both catalyst types in aqueous medium under mild reaction conditions. The combination of [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene][bis(trifluoromethanesulfonyl)-imide]gold(I) (IPrAuNTf2 ) and a selective alcohol dehydrogenase (ADH-A from Rhodococcus ruber, KRED-P1-A12 or KRED-P3-G09) led to the synthesis of a series of optically active (E)-4-arylpent-3-en-2-ols in good yields (65-86 %). The approach was also extended to various 2-hetarylpent-3-yn-2-ol, hexynol, and butynol derivatives. The use of alcohol dehydrogenases of opposite selectivity led to the production of both allyl alcohol enantiomers (93->99 % ee) for a broad panel of substrates.
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Affiliation(s)
- Sergio González-Granda
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006, Oviedo, Spain
| | - Iván Lavandera
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006, Oviedo, Spain
| | - Vicente Gotor-Fernández
- Organic and Inorganic Chemistry Department, University of Oviedo, Avenida Julián Clavería 8, 33006, Oviedo, Spain
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20
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Lainer B, Lichosyt D, Aleksandrova M, Dydio P. Enantioselective α-Arylation of Primary Alcohols under Sequential One-Pot Catalysis. J Org Chem 2021; 86:9253-9262. [PMID: 34114458 DOI: 10.1021/acs.joc.1c00983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Secondary benzylic alcohols and diarylmethanols are common structural motifs of biologically active and medicinally relevant compounds. Here we report their enantioselective synthesis by α-arylation of primary aliphatic and benzylic alcohols under sequential catalysis integrating a Ru-catalyzed hydrogen transfer oxidation and a Ru-catalyzed nucleophilic addition. The method can be applied to various alcohols and aryl nucleophiles tolerating a range of functional groups, including secondary alcohols, ketones, alkenes, esters, NH amides, tertiary amines, aryl halides, and heterocycles.
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Affiliation(s)
- Bruno Lainer
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Dawid Lichosyt
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Maiia Aleksandrova
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Paweł Dydio
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
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21
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Liu X, Wang C, Wang X, Ma Z, Meng L, Ding D, Liu J, Chen Y. Synthesis of Spirobarbiturate Piperidin-2-one Derivatives via Cascade Aza-Michael/Michael Cyclization Reaction. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Zhang M, Gong Y, Zhou W, Zhou Y, Liu XL. Recent advances of chromone-based reactants in the catalytic asymmetric domino annulation reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo00269d] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chiral polycyclic chromanones are important heterocyclic frameworks that constitute the core structures of many natural products and bioactive molecules.
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Affiliation(s)
- Min Zhang
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Southwest Medicine and Food
- Guizhou University
- Guiyang
- P. R. China
| | - Yi Gong
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Southwest Medicine and Food
- Guizhou University
- Guiyang
- P. R. China
| | - Wei Zhou
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Southwest Medicine and Food
- Guizhou University
- Guiyang
- P. R. China
| | - Ying Zhou
- College of Pharmaceutical Sciences
- Guizhou University of Chinese Medicine
- Guiyang
- P. R. China
| | - Xiong-Li Liu
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Southwest Medicine and Food
- Guizhou University
- Guiyang
- P. R. China
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23
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Wang Y, Cobo AA, Franz AK. Recent advances in organocatalytic asymmetric multicomponent cascade reactions for enantioselective synthesis of spirooxindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo00220a] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Catalytic asymmetric MCCRs for enantioselective synthesis of spirooxindoles by using chiral phosphoric acids, amines, bifunctional thiourea/squaramides and metal-based reagents as catalysts.
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Affiliation(s)
- Yongchao Wang
- Colleage of Vocational and Technical Education
- Yunnan Normal University
- Kunming 650092
- P. R. China
| | - Angel A. Cobo
- Department of Chemistry
- University of California
- Davis
- USA
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24
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Thiourea–Tertiary Amine Promoted Cascade Catalysis: A Tool for Complexity Generation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001114] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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25
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Pei JP, Lv XJ, Peng CJ, Liu YK. Asymmetric organocatalytic multicomponent reactions for efficient construction of bicyclic compounds bearing bisacetal and isoxazolidine moieties. Chem Commun (Camb) 2020; 56:12765-12768. [PMID: 32966389 DOI: 10.1039/d0cc05099g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic multicomponent reaction of N-protected hydroxylamines, acrylaldehyde and acetal-containing enones was developed. Bisacetal-containing bicyclic isoxazolidine derivatives bearing four continuous stereocenters were formed with excellent stereoselectivities. A plausible reaction pathway was proposed based on 18O-labeling control experiments.
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Affiliation(s)
- Jun-Ping Pei
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
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26
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Song R, Yu B, Friedrich D, Li J, Shen H, Krautscheid H, Huang SD, Kim MH. Naphthoquinone-derivative as a synthetic compound to overcome the antibiotic resistance of methicillin-resistant S. aureus. Commun Biol 2020; 3:529. [PMID: 32973345 PMCID: PMC7518446 DOI: 10.1038/s42003-020-01261-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 08/25/2020] [Indexed: 12/15/2022] Open
Abstract
The treatment of Staphylococcus aureus (S. aureus) infections has become more difficult due to the emergence of multidrug resistance in the bacteria. Here, we report the synthesis of a lawsone (2-hydroxy-1,4-naphthoquinone)-based compound as an antimicrobial agent against methicillin-resistant S. aureus (MRSA). A series of lawsone-derivative compounds were synthesized by means of tuning the lipophilicity of lawsone and screened for minimum inhibitory concentrations against MRSA to identify a candidate compound that possesses a potent antibacterial activity. The identified lawsone-derivative compound exhibited significantly improved drug resistance profiles against MRSA compared to conventional antibiotics. The therapeutic efficacy of the compound was validated using murine models of wound infection as well as non-lethal systemic infection induced by MRSA. Our study further revealed the multifaceted modes of action of the compound, mediated by three distinctive mechanisms: (1) cell membrane damage, (2) chelation of intracellular iron ions, and (3) generation of intracellular reactive oxygen species. Ronghui Song et al. demonstrate that a lawsone (2-hydroxy-1,4-naphthoquinone)-based compound decreases the drug resistance of methicillin-resistant Staphylococcus aureus much better than conventional antibiotics. This study provides insights into the design and action mechanism of effective antibiotics that overcome the antibiotic resistance of bacteria.
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Affiliation(s)
- Ronghui Song
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44240, USA
| | - Bing Yu
- Department of Biological Sciences, Kent State University, Kent, OH, 44240, USA
| | - Dirk Friedrich
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44240, USA
| | - Junfeng Li
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44240, USA
| | - Hao Shen
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44240, USA
| | - Harald Krautscheid
- Institute of Inorganic Chemistry, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Songping D Huang
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44240, USA.
| | - Min-Ho Kim
- Department of Biological Sciences, Kent State University, Kent, OH, 44240, USA.
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27
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Krishna AV, Reddy GS, Gorachand B, Ramachary DB. Organocatalytic Asymmetric Formal [3+3]‐Cycloaddition to Access 2,3‐Diazaspiro[4.5]deca‐3,6‐dien‐1‐ones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001175] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- A. Vamshi Krishna
- Catalysis Laboratory School of Chemistry University of Hyderabad 500 046 Hyderabad India
| | - G. Surendra Reddy
- Catalysis Laboratory School of Chemistry University of Hyderabad 500 046 Hyderabad India
| | - B. Gorachand
- Catalysis Laboratory School of Chemistry University of Hyderabad 500 046 Hyderabad India
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28
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Elamri I, Radloff M, Hohmann KF, Nimbarte VD, Nasiri HR, Bolte M, Safarian S, Michel H, Schwalbe H. Synthesis and Biological Screening of New Lawson Derivatives as Selective Substrate-Based Inhibitors of Cytochrome bo 3 Ubiquinol Oxidase from Escherichia coli. ChemMedChem 2020; 15:1262-1271. [PMID: 32159929 PMCID: PMC7497249 DOI: 10.1002/cmdc.201900707] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/20/2020] [Indexed: 01/13/2023]
Abstract
The respiratory chain of Escherichia coli contains two different types of terminal oxidase that are differentially regulated as a response to changing environmental conditions. These oxidoreductases catalyze the reduction of molecular oxygen to water and contribute to the proton motive force. The cytochrome bo3 oxidase (cyt bo3 ) acts as the primary terminal oxidase under atmospheric oxygen levels, whereas the bd-type oxidase is most abundant under microaerobic conditions. In E. coli, both types of respiratory terminal oxidase (HCO and bd-type) use ubiquinol-8 as electron donor. Here, we assess the inhibitory potential of newly designed and synthesized 3-alkylated Lawson derivatives through L-proline-catalyzed three-component reductive alkylation (TCRA). The inhibitory effects of these Lawson derivatives on the terminal oxidases of E. coli (cyt bo3 and cyt bd-I) were tested potentiometrically. Four compounds were able to reduce the oxidoreductase activity of cyt bo3 by more than 50 % without affecting the cyt bd-I activity. Moreover, two inhibitors for both cyt bo3 and cyt bd-I oxidase could be identified. Based on molecular-docking simulations, we propose binding modes of the new Lawson inhibitors. The molecular fragment benzyl enhances the inhibitory potential and selectivity for cyt bo3 , whereas heterocycles reduce this effect. This work extends the library of 3-alkylated Lawson derivatives as selective inhibitors for respiratory oxidases and provides molecular probes for detailed investigations of the mechanisms of respiratory-chain enzymes of E. coli.
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Affiliation(s)
- Isam Elamri
- Center for Biomolecular Magnetic Resonance Institute of Organic Chemistry and Chemical BiologyGoethe-Universität Frankfurt am MainMax-von Laue-Straße 760438Frankfurt am MainGermany
| | - Melanie Radloff
- Department of Molecular Membrane BiologyMax Planck Institute of BiophysicsMax-von-Laue-Straße 360438Frankfurt am MainGermany
| | - Katharina F. Hohmann
- Center for Biomolecular Magnetic Resonance Institute of Organic Chemistry and Chemical BiologyGoethe-Universität Frankfurt am MainMax-von Laue-Straße 760438Frankfurt am MainGermany
| | - Vijaykumar D. Nimbarte
- Center for Biomolecular Magnetic Resonance Institute of Organic Chemistry and Chemical BiologyGoethe-Universität Frankfurt am MainMax-von Laue-Straße 760438Frankfurt am MainGermany
| | - Hamid R. Nasiri
- Center for Biomolecular Magnetic Resonance Institute of Organic Chemistry and Chemical BiologyGoethe-Universität Frankfurt am MainMax-von Laue-Straße 760438Frankfurt am MainGermany
| | - Michael Bolte
- Institute for Inorganic ChemistryGoethe-UniversitätFrankfurt am MainGermany
| | - Schara Safarian
- Department of Molecular Membrane BiologyMax Planck Institute of BiophysicsMax-von-Laue-Straße 360438Frankfurt am MainGermany
| | - Hartmut Michel
- Department of Molecular Membrane BiologyMax Planck Institute of BiophysicsMax-von-Laue-Straße 360438Frankfurt am MainGermany
| | - Harald Schwalbe
- Center for Biomolecular Magnetic Resonance Institute of Organic Chemistry and Chemical BiologyGoethe-Universität Frankfurt am MainMax-von Laue-Straße 760438Frankfurt am MainGermany
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29
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Li X, Sun P, Xie K, Zhou D, Peng J, Fan A, Zhang J, Chen C. Transition-Metal-Free One-Pot Synthesis of Naphthoquinonefuran Derivatives Through Sequential Nucleophilic Substitution-Nucleophilic Addition Reaction. J Org Chem 2020; 85:9313-9320. [PMID: 32608986 DOI: 10.1021/acs.joc.0c00513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A transition-metal-free route for tandem one-pot synthesis of naphthoquinonefuran derivatives from 2-hydroxynaphthoquinones has been developed. The sequentially accomplished process comprises an intermolecular alkynylation of sp2-carbon at the 3 position of 2-hydroxynaphthoquinones with arylethynyl bromides, followed by a base-promoted intramolecular nucleophilic annulation reaction. A broad range of functional groups is compatible with this reaction, and diverse naphtho[2,3-b]furan-4,9-diones can be obtained with good yields and excellent regioselectivity.
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Affiliation(s)
- Xiang Li
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Peng Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, Harbin 150040, P. R. China
| | - Kaijun Xie
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Dun Zhou
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Jinsong Peng
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Aihong Fan
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Jing Zhang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Chunxia Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, Harbin 150040, P. R. China
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30
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Kripalaya Ratheesh A, Karnam Jayarampillai RP. Acid‐Promoted Hetero Annulation: An Expeditious Route to Construct Functionalized Pyrido‐ and Pyrimido[5′,4′:5,6]pyrido‐ Fused [
a
]Carbazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202000281] [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]
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31
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Regio- and Enantioselective α,γ-Dialkylation of α,β-Unsaturated Aldehydes Through Cascade Organocatalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Medas KM, Lesch RW, Edioma FB, Wrenn SP, Ndahayo V, Mulcahy SP. Metal-Catalyzed Cyclotrimerization Reactions of Cyanamides: Synthesis of 2-Aryl-α-carbolines. Org Lett 2020; 22:3135-3139. [PMID: 32255636 DOI: 10.1021/acs.orglett.0c00891] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The synthesis of annulated 2-aryl-α-carboline heterocycles is described using transition metal catalysis. A linear strategy is described that uses Rh(I) catalysis to form the α-carboline scaffold by [2+2+2] cyclotrimerization. Alternatively, a tandem catalytic approach using a Pd(II) precatalyst afforded the same target molecules by mediating a Sonogashira reaction and a [2+2+2] cyclotrimerization in the same reaction flask. In each case, nine different 2-aryl-α-carbolines have been prepared in high to modest isolated yields.
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Affiliation(s)
- Kyle M Medas
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
| | - Robert W Lesch
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
| | - Friendship B Edioma
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
| | - Sean P Wrenn
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
| | - Vincent Ndahayo
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
| | - Seann P Mulcahy
- Department of Chemistry and Biochemistry, Providence College, 1 Cunningham Square, Providence, Rhode Island 02918, United States
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33
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Sancheti SP, Urvashi, Shah MP, Patil NT. Ternary Catalysis: A Stepping Stone toward Multicatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04000] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Shashank P. Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Urvashi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Mosami P. Shah
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
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34
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Reddy RJ, Shankar A, Kumari AH. An Efficient Sequential One‐Pot Approach for the Synthesis of C3‐Functionalized Imidazo[1,2‐
a
]pyridines under Transition‐Metal Free Conditions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900606] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry University College of ScienceOsmania University Hyderabad 500 007 India
| | - Angothu Shankar
- Department of Chemistry University College of ScienceOsmania University Hyderabad 500 007 India
| | - Arram Haritha Kumari
- Department of Chemistry University College of ScienceOsmania University Hyderabad 500 007 India
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35
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Pasha MA, Krishna AV, Ashok E, Ramachary DB. Organocatalytic Reductive Propargylation: Scope and Applications. J Org Chem 2019; 84:15399-15416. [DOI: 10.1021/acs.joc.9b02415] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Mohammed Anif Pasha
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - A. Vamshi Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Etikala Ashok
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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36
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Wang Y, Jia S, Li EQ, Duan Z. Phosphine/Palladium Cooperative Catalysis: (4 + 3) Annulations of Morita–Baylis–Hillman Carbonates and Vinyl Benzoxazinanones. J Org Chem 2019; 84:15323-15330. [DOI: 10.1021/acs.joc.9b02349] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yue Wang
- College of Chemistry, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Siming Jia
- College of Chemistry, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Er-Qing Li
- College of Chemistry, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Zheng Duan
- College of Chemistry, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, P. R. China
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37
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Zhang W, Wang Z, Zhao Y, Miras HN, Song Y. Precise Control of the Oriented Layered Double Hydroxide Nanosheets Growth on Graphene Oxides Leading to Efficient Catalysts for Cascade Reactions. ChemCatChem 2019. [DOI: 10.1002/cctc.201901208] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Zhang
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Zelin Wang
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Yufei Zhao
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
| | | | - Yu‐Fei Song
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
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38
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Peraka S, Pasha MA, Thirupathi G, Ramachary DB. Organocatalytic Formal Intramolecular [3+2]‐Cycloaddition to Acquire Biologically Important Methanodibenzo[
a,f
]azulenes and Methanobenzo[
f
]azulenes. Chemistry 2019; 25:14036-14041. [DOI: 10.1002/chem.201902453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/11/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Swamy Peraka
- Catalysis LaboratorySchool of ChemistryUniversity of Hyderabad Hyderabad 500 046 India
| | - Mohammed Anif Pasha
- Catalysis LaboratorySchool of ChemistryUniversity of Hyderabad Hyderabad 500 046 India
| | - Guguloth Thirupathi
- Catalysis LaboratorySchool of ChemistryUniversity of Hyderabad Hyderabad 500 046 India
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39
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Chen XB, Xiong SL, Xie ZX, Wang YC, Liu W. Three-Component One-Pot Synthesis of Highly Functionalized Bis-Indole Derivatives. ACS OMEGA 2019; 4:11832-11837. [PMID: 31460292 PMCID: PMC6682060 DOI: 10.1021/acsomega.9b01159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 06/25/2019] [Indexed: 05/10/2023]
Abstract
In this study, we detail the development of a concise and efficient three-component protocol for the regioselective synthesis of highly functionalized bis-indoles through a one-pot, two-step sequential process starting from enaminones 1, indoles 2, and acenaphthylene-1,2-dione 3 that is catalyzed by piperidine and p-methyl benzenesulfonic acid. This protocol has several advantages including simplicity of experimental operation, high efficiency of bond formation, ready availability and low cost of starting materials, environmentally benign conditions, and target molecular diversity.
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Affiliation(s)
- Xue-Bing Chen
- School
of Science, Honghe University, Mengzi, 661100 Yunnan, P. R. China
| | - Sheng-Li Xiong
- School
of Science, Honghe University, Mengzi, 661100 Yunnan, P. R. China
| | - Zhi-Xu Xie
- School
of Science, Honghe University, Mengzi, 661100 Yunnan, P. R. China
| | - Yong-Chao Wang
- School
of Vocational and Technical Education, Yunnan
Normal University, Kunming 650092, P. R. China
| | - Wei Liu
- School
of Science, Honghe University, Mengzi, 661100 Yunnan, P. R. China
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40
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Vidyacharan S, Ramanjaneyulu BT, Jang S, Kim DP. Continuous-Flow Visible Light Organophotocatalysis for Direct Arylation of 2H-Indazoles: Fast Access to Drug Molecules. CHEMSUSCHEM 2019; 12:2581-2586. [PMID: 30985985 DOI: 10.1002/cssc.201900736] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A continuous-flow homogeneous photocatalytic method has been devised for the direct arylation of 2H-indazoles. This visible-light-promoted approach directly accesses a wide range of structurally diverse C3-arylated scaffolds of biological interest in a fast (1 min), single-step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast synthesis of liver X receptor inhibitor drugs with very good yields under metal-free conditions, whereas the reported methods required multiple steps and much longer reaction times (18-24 h).
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Affiliation(s)
- Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Bandaru T Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
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41
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Romaniszyn M, Gronowska K, Albrecht Ł. 2-Substituted 1,4-Naphthoquinones in [6 + 4]-Cycloaddition with 8,8-Dicyanoheptafulvene. J Org Chem 2019; 84:9929-9936. [DOI: 10.1021/acs.joc.9b01091] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Marta Romaniszyn
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology Zeromskiego 116, 90-924 Łódź, Poland
| | - Katarzyna Gronowska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology Zeromskiego 116, 90-924 Łódź, Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology Zeromskiego 116, 90-924 Łódź, Poland
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42
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Murugan A, Babu VN, Polu A, Sabarinathan N, Bakthadoss M, Sharada DS. Regioselective C3-H Trifluoromethylation of 2 H-Indazole under Transition-Metal-Free Photoredox Catalysis. J Org Chem 2019; 84:7796-7803. [PMID: 31117559 DOI: 10.1021/acs.joc.9b00676] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Trifluoromethyl-substituted heteroarenes are biologically active compounds and useful building blocks. In this sequence, we have developed a visible-light-promoted regioselective C3-H trifluoromethylation of 2 H-indazole under metal-free conditions, which proceeds via a radical mechanism. The combination of photocatalysis and hypervalent iodine reagent provides a practical approach to a library of trifluoromethylated indazoles in 35-83% yields.
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Affiliation(s)
- Arumugavel Murugan
- Catalysis & Chemical Biology Laboratory, Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, 502285 Sangareddy , Telangana , India
| | - Venkata Nagarjuna Babu
- Catalysis & Chemical Biology Laboratory, Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, 502285 Sangareddy , Telangana , India
| | - Ashok Polu
- Catalysis & Chemical Biology Laboratory, Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, 502285 Sangareddy , Telangana , India
| | - Nagaraj Sabarinathan
- Catalysis & Chemical Biology Laboratory, Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, 502285 Sangareddy , Telangana , India
| | - Manickam Bakthadoss
- Department of Chemistry , Pondicherry University , Pondicherry 605014 , India
| | - Duddu S Sharada
- Catalysis & Chemical Biology Laboratory, Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, 502285 Sangareddy , Telangana , India
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43
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Zheng H, Wang Y, Xu C, Xiong Q, Lin L, Feng X. Diversified Cycloisomerization/Diels-Alder Reactions of 1,6-Enynes through Bimetallic Relay Asymmetric Catalysis. Angew Chem Int Ed Engl 2019; 58:5327-5331. [PMID: 30758902 DOI: 10.1002/anie.201900421] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Indexed: 01/24/2023]
Abstract
We report the combination of transition-metal-catalyzed diversified cycloisomerization of 1,6-enynes with chiral Lewis acid promoted asymmetric Diels-Alder reaction to realize asymmetric cycloisomerization/Diels-Alder relay reactions of 1,6-enynes with electron-deficient alkenes. A broad spectrum of chiral [5,6]-bicyclic products could be acquired in high yields (up to 99 %) with excellent diastereoselectivy (>19:1 dr) and enantioselectivity (up to 99 % ee).
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Affiliation(s)
- Haifeng Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yan Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Chaoran Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Qian Xiong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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44
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Zheng H, Wang Y, Xu C, Xiong Q, Lin L, Feng X. Diversified Cycloisomerization/Diels–Alder Reactions of 1,6‐Enynes through Bimetallic Relay Asymmetric Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900421] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Haifeng Zheng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Yan Wang
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Chaoran Xu
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Qian Xiong
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
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45
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Skrzyńska A, Frankowski S, Moczulski M, Drelich P, Albrecht Ł. Site-Selective and Enantioselective α,β,γ-Functionalization of 5-Alkylidenefuran-2(5 H)-ones: A Route to Polycyclic γ-Lactones. Org Lett 2019; 21:1248-1252. [PMID: 30746947 DOI: 10.1021/acs.orglett.8b03796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new strategy for a direct α,β,γ-functionalization of the γ-lactone framework in the corresponding 5-alkylidenefuran-2(5 H)-ones is reported. The developed approach is based on a stereocontrolled cascade reaction with 2-mercaptocarbonyl compounds proceeding in a sequence of thia-Michael/aldol/oxa-Michael reactions. Such a synthetic strategy allows for a construction of a unique polycyclic architecture containing γ-lactone, tetrahydrofuran, and tetrahydrothiophene ring systems. Excellent enantioselectivities and diastereoselectivities have been obtained in the presence of bifunctional catalyst derived from cinchona alkaloids.
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Affiliation(s)
- Anna Skrzyńska
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Sebastian Frankowski
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Marek Moczulski
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Piotr Drelich
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry , Lodz University of Technology , Żeromskiego 116 , 90-924 Łódź , Poland
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46
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Albrecht A, Bojanowski J, Kot A, Sieroń L. Decarboxylative, trienamine mediated cycloaddition for the synthesis of 3,4-dihydrocoumarin derivatives. Org Biomol Chem 2019; 17:4238-4242. [DOI: 10.1039/c9ob00386j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Communication describes the first decarboxylative trienamine-mediated cycloaddition between 2,4-dienals and coumarin-3-carboxylic acids.
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Affiliation(s)
- Anna Albrecht
- Institute of Organic Chemistry
- Department of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Jan Bojanowski
- Institute of Organic Chemistry
- Department of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Adrianna Kot
- Institute of Organic Chemistry
- Department of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Lesław Sieroń
- Institute of Inorganic Chemistry
- Department of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
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47
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Maji M, Kundu S. Cooperative ruthenium complex catalyzed multicomponent synthesis of pyrimidines. Dalton Trans 2019; 48:17479-17487. [DOI: 10.1039/c9dt04040d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The ruthenium-catalyzed multicomponent synthesis of pyrimidines from amidines and alcohols is reported for the first time.
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Affiliation(s)
- Milan Maji
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Sabuj Kundu
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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48
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Zhao Q, Zhang J, Szostak M. Ruthenium(0)-sequential catalysis for the synthesis of sterically hindered amines by C–H arylation/hydrosilylation. Chem Commun (Camb) 2019; 55:9003-9006. [DOI: 10.1039/c9cc04072b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report sequential ruthenium(0)-catalysis for the synthesis of sterically-hindered amines via direct C–H arylation of simple imines and imine hydrosilylation.
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Affiliation(s)
- Qun Zhao
- Department of Chemistry
- Rutgers University
- Newark
- USA
| | - Jin Zhang
- College of Chemistry and Chemical Engineering and Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry
- Ministry of Education
- Shaanxi University of Science and Technology
- Xi’an 710021
- China
| | - Michal Szostak
- College of Chemistry and Chemical Engineering and Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry
- Ministry of Education
- Shaanxi University of Science and Technology
- Xi’an 710021
- China
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49
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Kaurav MS, Sahu PK, Sahu PK, Messali M, Almutairi S, Sahu PL, Agarwal DD. An efficient, mild and metal freel-proline catalyzed construction of fused pyrimidines under microwave conditions in water. RSC Adv 2019; 9:3755-3763. [PMID: 35518091 PMCID: PMC9060310 DOI: 10.1039/c8ra07517d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 01/10/2019] [Indexed: 02/03/2023] Open
Abstract
One-pot condensation of 4-hydroxy coumarins, aldehydes and urea/thiourea to build C–C and C–N bonds is described. Fused pyrimidines have been synthesized under mild reaction conditions using l-proline. The protocol has been performed rapidly and efficiently in water under metal free conditions. Heterocyclic derivatives have been synthesized using the present methodology and avoid the use of hazardous solvents over conventional organic solvents. A proposed mechanism could be established for three component reactions. The present study reveals the first case in which l-proline has been explored as a homogeneous catalyst in the synthesis of fused pyrimidines in water under microwave irradiation. This synthesis involves simple workup and acceptable efficiency. The most notable feature of this protocol is the ability of the catalyst to influence asymmetric induction in the reaction. One-pot condensation of 4-hydroxy coumarins, aldehydes and urea/thiourea to build C–C and C–N bonds is described.![]()
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Affiliation(s)
| | - Pramod K. Sahu
- School of Studies in Chemistry
- Jiwaji University
- Gwalior-474011
- India
- Department of Industrial Chemistry
| | - Praveen K. Sahu
- Department of Industrial Chemistry
- Jiwaji University
- Gwalior-474011
- India
| | - Mouslim Messali
- Department of Chemistry
- Taibah University
- 30002 Al-Madina Al-Mounawara
- Saudi Arabia
| | - Saud M. Almutairi
- King Abdulaziz City for Science and Technology
- Riyadh 11442
- Saudi Arabia
| | - Puran L. Sahu
- Indian Pharmacopoeia Commission
- Ministry of Health and Family Welfare
- Ghaziabad 201002
- India
- National Dope Testing Laboratory (NDTL)
| | - Dau D. Agarwal
- School of Studies in Chemistry
- Jiwaji University
- Gwalior-474011
- India
- Department of Industrial Chemistry
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50
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Kowalczyk-Dworak D, Albrecht Ł. α,β-Unsaturated butenolides in an organocatalytic doubly annulative cascade for the preparation of 3,4-dihydrocoumarins. Org Biomol Chem 2019; 17:2624-2628. [DOI: 10.1039/c9ob00068b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An organocatalytic doubly annulative cascade utilizing α,β-unsaturated butenolides and imines (derived from salicyl aldehydes and α-amino-γ-lactones) as starting materials is described.
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Affiliation(s)
- Dorota Kowalczyk-Dworak
- Institute of Organic Chemistry
- Faculty of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry
- Faculty of Chemistry
- Lodz University of Technology
- 90-924 Łódź
- Poland
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