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Zhu C, Yuan Z, Deng Z, Yin D, Zhang Y, Zhou J, Rao Y. Photoenzymatic Enantioselective Synthesis of Oxygen-Containing Benzo-Fused Heterocycles. Angew Chem Int Ed Engl 2023; 62:e202311762. [PMID: 37899302 DOI: 10.1002/anie.202311762] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/26/2023] [Accepted: 10/29/2023] [Indexed: 10/31/2023]
Abstract
New-to-nature biocatalysis in organic synthesis has recently emerged as a green and powerful strategy for the preparation of valuable chiral products, among which chiral oxygen-containing benzo-fused heterocycles are important structural motifs in pharmaceutical industry. However, the asymmetric synthesis of these compounds through radical-mediated methods is challenging. Herein, a novel asymmetric radical-mediated photoenzymatic synthesis strategy is developed to realize the efficient enantioselective synthesis of oxygen-containing benzo-fused heterocycles through structure-guided engineering of a flavin-dependent 'ene'-reductase GluER. It shows that variant GluER-W100H could efficiently produce various benzoxepinones, chromanone and indanone with different benzo-fused rings in high yields with great stereoselectivities under visible light. Moreover, these results are well supported by mechanistic experiments, revealing that this photoenzymatic process involves electron donor-acceptor complex formation, single electron transfer and hydrogen atom transfer. Therefore, we provide an alternative green approach for efficient chemoenzymatic synthesis of important chiral skeletons of bioactive pharmaceuticals.
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Affiliation(s)
- Changtong Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, P. R. China
| | - Zhenbo Yuan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, P. R. China
| | - Zhiwei Deng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, P. R. China
| | - Dejing Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, P. R. China
| | - Yan Zhang
- School of Life Sciences and Health Engineering, Jiangnan University, 214122, Wuxi, P. R. China
| | - Jingwen Zhou
- Science Center for Future Foods, Jiangnan University, 214122, Wuxi, P. R. China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, P. R. China
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2
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Kim MC, Winter JM, Cullum R, Smith AJ, Fenical W. Expanding the Utility of Bioinformatic Data for the Full Stereostructural Assignments of Marinolides A and B, 24- and 26-Membered Macrolactones Produced by a Chemically Exceptional Marine-Derived Bacterium. Mar Drugs 2023; 21:367. [PMID: 37367692 DOI: 10.3390/md21060367] [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: 06/03/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
Marinolides A and B, two new 24- and 26-membered bacterial macrolactones, were isolated from the marine-derived actinobacterium AJS-327 and their stereostructures initially assigned by bioinformatic data analysis. Macrolactones typically possess complex stereochemistry, the assignments of which have been one of the most difficult undertakings in natural products chemistry, and in most cases, the use of X-ray diffraction methods and total synthesis have been the major methods of assigning their absolute configurations. More recently, however, it has become apparent that the integration of bioinformatic data is growing in utility to assign absolute configurations. Genome mining and bioinformatic analysis identified the 97 kb mld biosynthetic cluster harboring seven type I polyketide synthases. A detailed bioinformatic investigation of the ketoreductase and enoylreductase domains within the multimodular polyketide synthases, coupled with NMR and X-ray diffraction data, allowed for the absolute configurations of marinolides A and B to be determined. While using bioinformatics to assign the relative and absolute configurations of natural products has high potential, this method must be coupled with full NMR-based analysis to both confirm bioinformatic assignments as well as any additional modifications that occur during biosynthesis.
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Affiliation(s)
- Min Cheol Kim
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, Skaggs School of Pharmacy and Pharmaceutical Sciences, Moores Comprehensive Cancer Center, University of California, La Jolla, San Diego, CA 92093, USA
| | - Jaclyn M Winter
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Reiko Cullum
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, Skaggs School of Pharmacy and Pharmaceutical Sciences, Moores Comprehensive Cancer Center, University of California, La Jolla, San Diego, CA 92093, USA
| | - Alexander J Smith
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, Skaggs School of Pharmacy and Pharmaceutical Sciences, Moores Comprehensive Cancer Center, University of California, La Jolla, San Diego, CA 92093, USA
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, Skaggs School of Pharmacy and Pharmaceutical Sciences, Moores Comprehensive Cancer Center, University of California, La Jolla, San Diego, CA 92093, USA
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3
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Recent Advances in Molecule Synthesis Involving C-C Bond Cleavage of Ketoxime Esters. Molecules 2023; 28:molecules28062667. [PMID: 36985637 PMCID: PMC10058904 DOI: 10.3390/molecules28062667] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
The synthetic strategies of oxime derivatives participating in radical-type reactions have been rapidly developed in the last few decades. Among them, the N–O bond cleavage of oxime esters leading to formation of nitrogen-centered radicals triggers adjacent C–C bond cleavage to produce carbon-centered free radicals, which has been virtually used in organic synthesis in recent years. Herein, we summarized the radical reactions involving oxime N–O bond and C–C bond cleavage through this special reaction form, including those from acyl oxime ester derivatives and cyclic ketoxime ester derivatives. These contents were systematically classified according to different reaction types. In this review, the free radical reactions involving acyl oxime esters and cyclic ketoxime esters after 2021 were included, with emphasis on the substrate scope and reaction mechanism.
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Li JK, Qu G, Li X, Tian Y, Cui C, Zhang FG, Zhang W, Ma JA, Reetz MT, Sun Z. Rational enzyme design for enabling biocatalytic Baldwin cyclization and asymmetric synthesis of chiral heterocycles. Nat Commun 2022; 13:7813. [PMID: 36535947 PMCID: PMC9763437 DOI: 10.1038/s41467-022-35468-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Chiral heterocyclic compounds are needed for important medicinal applications. We report an in silico strategy for the biocatalytic synthesis of chiral N- and O-heterocycles via Baldwin cyclization modes of hydroxy- and amino-substituted epoxides and oxetanes using the limonene epoxide hydrolase from Rhodococcus erythropolis. This enzyme normally catalyzes hydrolysis with formation of vicinal diols. Firstly, the required shutdown of the undesired natural water-mediated ring-opening is achieved by rational mutagenesis of the active site. In silico enzyme design is then continued with generation of the improved mutants. These variants prove to be versatile catalysts for preparing chiral N- and O-heterocycles with up to 99% conversion, and enantiomeric ratios up to 99:1. Crystal structural data and computational modeling reveal that Baldwin-type cyclizations, catalyzed by the reprogrammed enzyme, are enabled by reshaping the active-site environment that directs the distal RHN and HO-substituents to be intramolecular nucleophiles.
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Affiliation(s)
- Jun-Kuan Li
- grid.33763.320000 0004 1761 2484Department of Chemistry, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072 China ,grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China
| | - Ge Qu
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,National Technology Innovation Center of Synthetic Biology, Tianjin, 300308 China
| | - Xu Li
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,National Technology Innovation Center of Synthetic Biology, Tianjin, 300308 China
| | - Yuchen Tian
- grid.33763.320000 0004 1761 2484Department of Chemistry, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072 China
| | - Chengsen Cui
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,National Technology Innovation Center of Synthetic Biology, Tianjin, 300308 China
| | - Fa-Guang Zhang
- grid.33763.320000 0004 1761 2484Department of Chemistry, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072 China
| | - Wuyuan Zhang
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,National Technology Innovation Center of Synthetic Biology, Tianjin, 300308 China
| | - Jun-An Ma
- grid.33763.320000 0004 1761 2484Department of Chemistry, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072 China
| | - Manfred T. Reetz
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,grid.419607.d0000 0001 2096 9941Biocatalysis Section, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Zhoutong Sun
- grid.9227.e0000000119573309Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308 China ,National Technology Innovation Center of Synthetic Biology, Tianjin, 300308 China
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5
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Wagner L, Stang J, Derra S, Hollmann T, Hahn F. Towards understanding oxygen heterocycle-forming biocatalysts: a selectivity study of the pyran synthase PedPS7. Org Biomol Chem 2022; 20:9645-9649. [PMID: 36412217 DOI: 10.1039/d2ob02064e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Intramolecular oxa-Michael addition-catalysing cyclases are widespread in polyketide biosynthetic pathways. Although they have significant potential in biotechnology and chemoenzymatic synthesis of chiral heterocycles, they have only scarcely been studied. Here, we present detailed investigations on the selectivity profile of the pyran synthase PedPS7 showing that it combines broad substrate tolerance with high selectivity for the formation of up to two new stereocentres and relaxed precursor stereoisomer discrimination. Two of the four possible tetrahydropyran stereoisomers are reliably accessible by this enzyme. The results indicate fundamental differences between the individual subtypes of intramolecular oxa-Michael addition-catalysing cyclases.
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Affiliation(s)
- Lisa Wagner
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, 95447 Bayreuth, Germany.
| | - Jörg Stang
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, 95447 Bayreuth, Germany.
| | - Sebastian Derra
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, 95447 Bayreuth, Germany.
| | - Tim Hollmann
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, 95447 Bayreuth, Germany.
| | - Frank Hahn
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, 95447 Bayreuth, Germany.
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6
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Sigmund M, Xu G, Grandi E, Poelarends GJ. Enhancing the Peroxygenase Activity of a Cofactor-Independent Peroxyzyme by Directed Evolution Enabling Gram-Scale Epoxide Synthesis. Chemistry 2022; 28:e202201651. [PMID: 35861144 PMCID: PMC9804992 DOI: 10.1002/chem.202201651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Indexed: 01/09/2023]
Abstract
Peroxygenases selectively incorporate oxygen into organic molecules making use of the environmentally friendly oxidant H2 O2 with water being the sole by-product. These biocatalysts can provide 'green' routes for the synthesis of enantioenriched epoxides, which are fundamental intermediates in the production of pharmaceuticals. The peroxyzyme 4-oxalocrotonate tautomerase (4-OT), catalysing the epoxidation of a variety of α,β-unsaturated aldehydes with H2 O2 , is outstanding because of its independence from any cost-intensive cofactor. However, its low-level peroxygenase activity and the decrease in the enantiomeric excess of the corresponding α,β-epoxy-aldehydes under preparative-scale conditions is limiting the potential of 4-OT. Herein we report the directed evolution of a tandem-fused 4-OT variant, which showed an ∼150-fold enhanced peroxygenase activity compared to 4-OT wild type, enabling the synthesis of α,β-epoxy-aldehydes in milligram- and gram-scale with high enantiopurity (up to 98 % ee) and excellent conversions. This engineered cofactor-independent peroxyzyme can provide new opportunities for the eco-friendly and practical synthesis of enantioenriched epoxides at large scale.
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Affiliation(s)
- Marie‐Cathérine Sigmund
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Guangcai Xu
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Eleonora Grandi
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Gerrit J. Poelarends
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
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7
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Han C, Meng W, Feng X, Du H. Asymmetric Intramolecular Hydroalkoxylation of 2‐Vinylbenzyl Alcohols with Chiral Boro‐Phosphates. Angew Chem Int Ed Engl 2022; 61:e202200100. [DOI: 10.1002/anie.202200100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Caifang Han
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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8
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Asymmetric Intramolecular Hydroalkoxylation of 2‐Vinylbenzyl Alcohols with Chiral Boro‐Phosphates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Liu YC, Chen P, Li XJ, Xiong BQ, Liu Y, Tang KW, Huang PF. Visible-Light-Induced Dual Acylation of Alkenes for the Construction of 3-Substituted Chroman-4-ones. J Org Chem 2022; 87:4263-4272. [PMID: 35234478 DOI: 10.1021/acs.joc.1c03100] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Heterocyclic compounds, especially oxygen-containing heterocyclic compounds, are crucial moieties in bioactive compounds and drug leads. Substituted chroman-4-ones are a kind of the most significant structural skeletons. Herein, we report a visible-light-induced dual acylation of alkenes for constructing 3-substituted chroman-4-ones, which undergoes a radical tandem cyclization reaction through carbon-carbon bond cleavage of oxime esters by a nitrogen-centered radical strategy. A series of 3-substituted chroman-4-ones were prepared with up to 86% yield.
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Affiliation(s)
- Yi-Chen Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Pu Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Xue-Jiao Li
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Peng-Fei Huang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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10
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A soil-borne Mn(II)-oxidizing bacterium of Providencia sp. exploits a strategy of superoxide production coupled to hydrogen peroxide consumption to generate Mn oxides. Arch Microbiol 2022; 204:168. [DOI: 10.1007/s00203-022-02771-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/08/2021] [Accepted: 01/17/2022] [Indexed: 12/13/2022]
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11
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Bowen JI, Wang L, Crump MP, Willis CL. Synthetic and biosynthetic methods for selective cyclisations of 4,5-epoxy alcohols to tetrahydropyrans. Org Biomol Chem 2022; 20:1150-1175. [PMID: 35029626 PMCID: PMC8827043 DOI: 10.1039/d1ob01905h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 12/21/2021] [Indexed: 12/20/2022]
Abstract
Tetrahydropyrans (THPs) are common structural motifs found in natural products and synthetic therapeutic molecules. In Nature these 6-membered oxygen heterocycles are often assembled via intramolecular reactions involving either oxy-Michael additions or ring opening of epoxy-alcohols. Indeed, the polyether natural products have been particularly widely studied due to their fascinating structures and important biological properties; these are commonly formed via endo-selective epoxide-opening cascades. In this review we outline synthetic approaches for endo-selective intramolecular epoxide ring opening (IERO) of 4,5-epoxy-alcohols and their applications in natural product synthesis. In addition, the biosynthesis of THP-containing natural products which utilise IERO reactions are reviewed.
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Affiliation(s)
- James I Bowen
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Luoyi Wang
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Matthew P Crump
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Christine L Willis
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
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12
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Malūkaitė D, Grybaitė B, Vaickelionienė R, Vaickelionis G, Sapijanskaitė-Banevič B, Kavaliauskas P, Mickevičius V. Synthesis of Novel Thiazole Derivatives Bearing β-Amino Acid and Aromatic Moieties as Promising Scaffolds for the Development of New Antibacterial and Antifungal Candidates Targeting Multidrug-Resistant Pathogens. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010074. [PMID: 35011308 PMCID: PMC8746625 DOI: 10.3390/molecules27010074] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/09/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022]
Abstract
Rapidly growing antimicrobial resistance among clinically important bacterial and fungal pathogens accounts for high morbidity and mortality worldwide. Therefore, it is critical to look for new small molecules targeting multidrug-resistant pathogens. Herein, in this paper we report a synthesis, ADME properties, and in vitro antimicrobial activity characterization of novel thiazole derivatives bearing β-amino acid, azole, and aromatic moieties. The in silico ADME characterization revealed that compounds 1-9 meet at least 2 Lipinski drug-like properties while cytotoxicity studies demonstrated low cytotoxicity to Vero cells. Further in vitro antimicrobial activity characterization showed the selective and potent bactericidal activity of 2a-c against Gram-positive pathogens (MIC 1-64 µg/mL) with profound activity against S. aureus (MIC 1-2 µg/mL) harboring genetically defined resistance mechanisms. Furthermore, the compounds 2a-c exhibited antifungal activity against azole resistant A. fumigatus, while only 2b and 5a showed antifungal activity against multidrug resistant yeasts including Candida auris. Collectively, these results demonstrate that thiazole derivatives 2a-c and 5a could be further explored as a promising scaffold for future development of antifungal and antibacterial agents targeting highly resistant pathogenic microorganisms.
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Affiliation(s)
- Dovilė Malūkaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
| | - Birutė Grybaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
| | - Rita Vaickelionienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
- Correspondence: ; Tel.: +370-6001-6958
| | - Giedrius Vaickelionis
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
| | - Birutė Sapijanskaitė-Banevič
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
| | - Povilas Kavaliauskas
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
- Weill Cornell Medicine of Cornell University, 527 East 68th Street, New York, NY 10065, USA
- Institute for Genome Sciences, School of Medicine, University of Maryland, 655 W. Baltimore Street, Baltimore, MD 21201, USA
- Biological Research Center, Veterinary Academy, Lithuanian University of Health Sciences, Tilžės Str. 18, LT-47181 Kaunas, Lithuania
- Institute of Infectious Diseases and Pathogenic Microbiology, Birštono Str. 38A, LT-59116 Prienai, Lithuania
| | - Vytautas Mickevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (D.M.); (B.G.); (G.V.); (B.S.-B.); (P.K.); (V.M.)
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13
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Goswami M, Dutta A, Paul P, Nongkhlaw R. Recent Developments on Catalyst‐Free, Visible‐Light‐Triggered Synthesis of Heterocyclic Scaffolds and Their Mechanistic Study. ChemistrySelect 2021. [DOI: 10.1002/slct.202102696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Munmee Goswami
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Arup Dutta
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Pooja Paul
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Rishanlang Nongkhlaw
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
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14
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Singh PP, Singh PK, Beg MZ, Kashyap A, Srivastava V. Recent applications of photoredox catalysis in O-heterocycles: A short review. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1968907] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Praveen P. Singh
- Department of Chemistry, United College of Engineering & Research, Prayagraj, India
| | - Pravin K. Singh
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, India
| | - Mohd. Zaheeruddin Beg
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, India
| | - Akanksha Kashyap
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, India
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15
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Ali HS, Henchman RH, Visser SP. Mechanism of Oxidative Ring‐Closure as Part of the Hygromycin Biosynthesis Step by a Nonheme Iron Dioxygenase. ChemCatChem 2021. [DOI: 10.1002/cctc.202100393] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hafiz Saqib Ali
- Manchester Institute of Biotechnology The University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Richard H. Henchman
- Manchester Institute of Biotechnology The University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Sam P. Visser
- Manchester Institute of Biotechnology The University of Manchester 131 Princess Street Manchester M1 7DN UK
- Department of Chemical Engineering and Analytical Science The University of Manchester Oxford Road Manchester M13 9PL UK
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Song H, Rao C, Deng Z, Yu Y, Naismith JH. The Biosynthesis of the Benzoxazole in Nataxazole Proceeds via an Unstable Ester and has Synthetic Utility. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haigang Song
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University 185 East Lake Road Wuhan 430071 P. R. China
- Division of Structural BiologyWellcome Centre for Human Genetics Roosevelt Drive Oxford OX3 7BN UK
- The Research Complex at Harwell Harwell Campus OX11 0FA UK
- The Rosalind Franklin Institute Harwell Campus OX11 0FA UK
| | - Cong Rao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University 185 East Lake Road Wuhan 430071 P. R. China
| | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University 185 East Lake Road Wuhan 430071 P. R. China
| | - Yi Yu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University 185 East Lake Road Wuhan 430071 P. R. China
| | - James H. Naismith
- Division of Structural BiologyWellcome Centre for Human Genetics Roosevelt Drive Oxford OX3 7BN UK
- The Research Complex at Harwell Harwell Campus OX11 0FA UK
- The Rosalind Franklin Institute Harwell Campus OX11 0FA UK
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Hollmann T, Berkhan G, Wagner L, Sung KH, Kolb S, Geise H, Hahn F. Biocatalysts from Biosynthetic Pathways: Enabling Stereoselective, Enzymatic Cycloether Formation on a Gram Scale. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tim Hollmann
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Gesche Berkhan
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
- Centre for Biomolecular Drug Research, Leibniz Universität Hannover, Schneiderberg 38, 30167 Hannover, Germany
| | - Lisa Wagner
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Kwang Hoon Sung
- Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Institute of Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany
- Protein Facility, ILAb Co., Ltd. NP513, The Catholic University of Korea, 420-743 Bucheon, Republic of Korea
| | - Simon Kolb
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Hendrik Geise
- Centre for Biomolecular Drug Research, Leibniz Universität Hannover, Schneiderberg 38, 30167 Hannover, Germany
| | - Frank Hahn
- Professur für Organische Chemie (Lebensmittelchemie), Fakultät für Biologie, Chemie und Geowissenschaften, Department of Chemistry, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
- Centre for Biomolecular Drug Research, Leibniz Universität Hannover, Schneiderberg 38, 30167 Hannover, Germany
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Song H, Rao C, Deng Z, Yu Y, Naismith JH. The Biosynthesis of the Benzoxazole in Nataxazole Proceeds via an Unstable Ester and has Synthetic Utility. Angew Chem Int Ed Engl 2020; 59:6054-6061. [PMID: 31903677 PMCID: PMC7204872 DOI: 10.1002/anie.201915685] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Indexed: 11/25/2022]
Abstract
Heterocycles, a class of molecules that includes oxazoles, constitute one of the most common building blocks in current pharmaceuticals and are common in medicinally important natural products. The antitumor natural product nataxazole is a model for a large class of benzoxazole‐containing molecules that are made by a pathway that is not characterized. We report structural, biochemical, and chemical evidence that benzoxazole biosynthesis proceeds through an ester generated by an ATP‐dependent adenylating enzyme. The ester rearranges via a tetrahedral hemiorthoamide to yield an amide, which is a shunt product and not, as previously thought, an intermediate in the pathway. A second zinc‐dependent enzyme catalyzes the formation of hemiorthoamide from the ester but, by shuttling protons, the enzyme eliminates water, a reverse hydrolysis reaction, to yield the benzoxazole and avoids the amide. These insights have allowed us to harness the pathway to synthesize a series of novel halogenated benzoxazoles.
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Affiliation(s)
- Haigang Song
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University185 East Lake RoadWuhan430071P. R. China
- Division of Structural BiologyWellcome Centre for Human GeneticsRoosevelt DriveOxfordOX3 7BNUK
- The Research Complex at HarwellHarwell CampusOX11 0FAUK
- The Rosalind Franklin InstituteHarwell CampusOX11 0FAUK
| | - Cong Rao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University185 East Lake RoadWuhan430071P. R. China
| | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University185 East Lake RoadWuhan430071P. R. China
| | - Yi Yu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education)School of Pharmaceutical SciencesWuhan University185 East Lake RoadWuhan430071P. R. China
| | - James H. Naismith
- Division of Structural BiologyWellcome Centre for Human GeneticsRoosevelt DriveOxfordOX3 7BNUK
- The Research Complex at HarwellHarwell CampusOX11 0FAUK
- The Rosalind Franklin InstituteHarwell CampusOX11 0FAUK
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Oxetane-containing metabolites: origin, structures, and biological activities. Appl Microbiol Biotechnol 2019; 103:2449-2467. [PMID: 30610285 DOI: 10.1007/s00253-018-09576-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 01/21/2023]
Abstract
Cyclobutanes containing one oxygen atom in a molecule are called oxetane-containing compounds (OCC). More than 600 different OCC are found in nature; they are produced by microorganisms, and also found in marine invertebrates and algae. The greatest number of them is found in plants belonging to the genus Taxus. Oxetanes are high-energy oxygen-containing non-aromatic heterocycles that are of great interest as new potential pharmacophores with a significant spectrum of biological activities. The biological activity of OCC that is produced by bacteria and Actinomycetes demonstrates antineoplastic, antiviral (arbovirus), and antifungal activity with confidence an angiogenesis stimulator, respiratory analeptic, and antiallergic activity dominate with confidence from 81 to 99%.
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