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Li L, Li P, Li T, Zhang M, Liu W, Li J, Wang L, Chen Y. Synthesis of the ABC ring system of kadlongilactones. Org Biomol Chem 2023; 21:1704-1708. [PMID: 36749621 DOI: 10.1039/d2ob01701f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A racemic approach towards the synthesis of the ABC (7/7/5) ring system of Schisandra triterpenoid kadlongilactones is described. The synthesis features two key transformations: (1) conjugate addition followed by iodolactonization to build the cis-fused 7/7 ring; and (2) conjugate addition-Rubottom oxidation cascade followed by ring-closing metathesis to construct the 7/7/5 tricyclic ring.
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Affiliation(s)
- Liang Li
- College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Pengfei Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300350, People's Republic of China
| | - Tianhao Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300350, People's Republic of China
| | - Mingxiao Zhang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300350, People's Republic of China
| | - Wenjie Liu
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300350, People's Republic of China
| | - Jing Li
- College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Liang Wang
- College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
| | - Yue Chen
- College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
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2
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Batabyal M, Upadhyay A, Kadu R, Birudukota NC, Chopra D, Kumar S. Tetravalent Spiroselenurane Catalysts: Intramolecular Se···N Chalcogen Bond-Driven Catalytic Disproportionation of H 2O 2 to H 2O and O 2 and Activation of I 2 and NBS. Inorg Chem 2022; 61:8729-8745. [PMID: 35638247 DOI: 10.1021/acs.inorgchem.2c00651] [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
Chalcogen-bonding interactions have recently gained considerable attention in the field of synthetic chemistry, structure, and bonding. Here, three organo-spiroselenuranes, having a Se(IV) center with a strong intramolecular Se···N chalcogen-bonded interaction, have been isolated by the oxidation of the respective bis(2-benzamide) selenides derived from an 8-aminoquinoline ligand. Further, the synthesized spiroselenuranes, when assayed for their antioxidant activity, show disproportionation of hydrogen peroxide into H2O and O2 with first-order kinetics with respect to H2O2 for the first time by any organoselenium molecules as monitored by 1H NMR spectroscopy. Electron-donating 5-methylthio-benzamide ring-substituted spiroselenurane disproportionates hydrogen peroxide at a high rate of 15.6 ± 0.4 × 103 μM min-1 with a rate constant of 8.57 ± 0.50 × 10-3 s-1, whereas 5-methoxy and unsubstituted-benzamide spiroselenuranes catalyzed the disproportionation of H2O2 at rates of 7.9 ± 0.3 × 103 and 2.9 ± 0.3 × 103 μM min-1 with rate constants of 1.16 ± 0.02 × 10-3 and 0.325 ± 0.025 × 10-3 s-1, respectively. The evolved oxygen gas from the spiroselenurane-catalyzed disproportion of H2O2 has also been confirmed by a gas chromatograph-thermal conductivity detector (GCTCD) and a portable digital polarographic dissolved O2 probe. Additionally, the synthesized spiroselenuranes exhibit thiol peroxidase antioxidant activities for the reduction of H2O2 by a benzenethiol co-reductant monitored by UV-visible spectroscopy. Next, the Se···N bonded spiroselenuranes have been explored as catalysts in synthetic oxidation iodolactonization and bromination of arenes. The synthesized spiroselenurane has activated I2 toward the iodolactonization of alkenoic acids under base-free conditions. Similarly, efficient chemo- and regioselective monobromination of various arenes with NBS catalyzed by chalcogen-bonded synthesized spiroselenuranes has been achieved. Mechanistic insight into the spiroselenuranes in oxidation reactions has been gained by 77Se NMR, mass spectrometry, UV-visible spectroscopy, single-crystal X-ray structure, and theoretical (DFT, NBO, and AIM) studies. It seems that the highly electrophilic nature of the selenium center is attributed to the presence of an intramolecular Se···N interaction and a vacant coordination site in spiroselenuranes is crucial for the activation of H2O2, I2, and NBS. The reaction of H2O2, I2, and NBS with tetravalent spiroselenurane would lead to an octahedral-Se(VI) intermediate, which is reduced back to Se(IV) due to thermodynamic instability of selenium in its highest oxidation state and the presence of a strong intramolecular N-donor atom.
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Affiliation(s)
- Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Rahul Kadu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India.,MIT School of Engineering, MIT Art, Design and Technology University Pune, Loni Kalbhor, Maharashtra 412201, India
| | - Nihal Chaitanya Birudukota
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
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3
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Cheng F, Wang LL, Mao YH, Dong YX, Liu B, Zhu GF, Yang YY, Guo B, Tang L, Zhang JQ. Iron-Catalyzed Radical Annulation of Unsaturated Carboxylic Acids with Disulfides for the Synthesis of γ-Lactones. J Org Chem 2021; 86:8620-8629. [PMID: 34097828 DOI: 10.1021/acs.joc.1c00284] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An efficient aerobic iron-catalyzed annulation of unsaturated carboxylic acids with disulfides has been developed. This procedure proceeds using FeCl3 as the catalyst and KI as an iodine source under an air atmosphere, which provides practical access to a wide range of substituted γ-lactone derivatives. The disclosed method is quite simple, highly atom-economic, environmentally friendly, and tolerates a broad substrate scope.
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Affiliation(s)
- Fei Cheng
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Li-Li Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Yuan-Hu Mao
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Yong-Xi Dong
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Bin Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Gao-Feng Zhu
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Yuan-Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang 550025, China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
| | - Ji-Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, Guiyang 550025, China
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Barik R, Halder J, Nanda S. Biocatalytic dynamic kinetic reductive resolution with ketoreductase from Klebsiella pneumoniae: the asymmetric synthesis of functionalized tetrahydropyrans. Org Biomol Chem 2019; 17:8571-8588. [PMID: 31517368 DOI: 10.1039/c9ob01681c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ketoreductase from growing cells of Klebsiella pneumoniae (NBRC 3319) acts as an efficient reagent for converting racemic α-benzyl/cinnamyl substituted-β-ketoesters to the corresponding β-hydroxy esters with excellent yields and stereoselectivities (ee and de >99 %). The reactions described herein followed a biocatalytic dynamic kinetic reductive resolution (DKRR) pathway, which is reported for the first time with such substrates. It was found that the enzyme system can accept substituted mono-aryl rings with different electronic natures. In addition, it also accepts a substituted naphthyl ring and heteroaryl ring in the α-position of the parent β-ketoester. The synthesized enantiopure β-hydroxy esters were then synthetically manipulated to valuable tetrahydropyran building blocks.
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Affiliation(s)
- Rasmita Barik
- Department of Chemistry, IIT Kharagpur, Kharagpur, 721302, India.
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Ariyarathna JP, Wu F, Colombo SK, Hillary CM, Li W. Aerobic Catalytic Features in Photoredox- and Copper-Catalyzed Iodolactonization Reactions. Org Lett 2018; 20:6462-6466. [PMID: 30277403 DOI: 10.1021/acs.orglett.8b02771] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mechanistic evaluations and comparison of two important aerobic catalytic oxidation processes, aerobic copper catalysis and photoredox catalysis, are performed. Interesting and distinct catalytic behaviors were observed for a common reaction of iodolactonization of alkenoic acids. Namely, the aerobic copper catalysis requires the formation of a copper carboxylate, whereas the aerobic photoredox catalysis requires the addition of proton sources to proceed to completion. Furthermore, the iodolactone products obtained from these catalytic processes are extensively derivatized to a number of functionalized lactones, including aryl lactones generated from the nickel-catalyzed reductive coupling with aryl halides.
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Affiliation(s)
- Jeewani Poornima Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Sara Katelyn Colombo
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Charleese Marisa Hillary
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
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6
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Klosowski DW, Hethcox JC, Paull DH, Fang C, Donald JR, Shugrue CR, Pansick AD, Martin SF. Enantioselective Halolactonization Reactions using BINOL-Derived Bifunctional Catalysts: Methodology, Diversification, and Applications. J Org Chem 2018; 83:5954-5968. [PMID: 29717607 PMCID: PMC5984189 DOI: 10.1021/acs.joc.8b00490] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general protocol is described for inducing enantioselective halolactonizations of unsaturated carboxylic acids using novel bifunctional organic catalysts derived from a chiral binaphthalene scaffold. Bromo- and iodolactonization reactions of diversely substituted, unsaturated carboxylic acids proceed with high degrees of enantioselectivity, regioselectivity, and diastereoselectivity. Notably, these BINOL-derived catalysts are the first to induce the bromo- and iodolactonizations of 5-alkyl-4( Z)-olefinic acids via 5- exo mode cyclizations to give lactones in which new carbon-halogen bonds are created at a stereogenic center with high diastereo- and enantioselectivities. Iodolactonizations of 6-substituted-5( Z)-olefinic acids also occur via 6- exo cyclizations to provide δ-lactones with excellent enantioselectivities. Several notable applications of this halolactonization methodology were developed for desymmetrization, kinetic resolution, and epoxidation of Z-alkenes. The utility of these reactions is demonstrated by their application to a synthesis of precursors of the F-ring subunit of kibdelone C and to the shortest catalytic, enantioselective synthesis of (+)-disparlure reported to date.
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Affiliation(s)
- Daniel W. Klosowski
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | - J. Caleb Hethcox
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | | | | | | | | | - Andrew D. Pansick
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Stephen F. Martin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
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7
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Inagaki S, Nakazato M, Fukuda N, Tamura S, Kawano T. Synthesis of 4-Halo-3(2H)-furanones Using Intramolecular Cyclization of Sulfonium Salts. J Org Chem 2017; 82:5583-5589. [DOI: 10.1021/acs.joc.7b00399] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sho Inagaki
- Department of Medicinal
and
Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Maiko Nakazato
- Department of Medicinal
and
Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Nozomi Fukuda
- Department of Medicinal
and
Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Satoru Tamura
- Department of Medicinal
and
Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Tomikazu Kawano
- Department of Medicinal
and
Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
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8
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Du B, Wang Y, Mei H, Han J, Pan Y. Copper(II) Acetate-Catalyzed Hydroxysulfenylation-Initiated Lactonization of Unsaturated Carboxylic Acids with Oxygen as Oxidant and Oxygenation Reagent. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700036] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bingnan Du
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210093 People's Republic of China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210093 People's Republic of China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210093 People's Republic of China
- MaAnShan High-Tech Research Institute of Nanjing University; MaAnShan 238200 People's Republic of China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210093 People's Republic of China
- MaAnShan High-Tech Research Institute of Nanjing University; MaAnShan 238200 People's Republic of China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210093 People's Republic of China
- MaAnShan High-Tech Research Institute of Nanjing University; MaAnShan 238200 People's Republic of China
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9
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Panahi F, Fareghi-Alamdari R, Khajeh Dangolani S, Khalafi-Nezhad A, Golestanzadeh M. Graphene GraftedN-Methyl-4-pyridinamine (G-NMPA): An Efficient Heterogeneous Organocatalyst for Acetylation of Alcohols. ChemistrySelect 2017. [DOI: 10.1002/slct.201601578] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Farhad Panahi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
- Department of Chemistry, College of Sciences; Shiraz University; Shiraz 71454 Iran
| | - Reza Fareghi-Alamdari
- Faculty of Chemistry & Chemical Engineering; Malek-Ashtar University of Technology; Tehran Iran
| | | | - Ali Khalafi-Nezhad
- Department of Chemistry, College of Sciences; Shiraz University; Shiraz 71454 Iran
| | - Mohsen Golestanzadeh
- Department of Organic Chemistry, Faculty of Chemistry; University of Kashan; Kashan Iran
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Panahi F, Dangolani SK, Khalafi-Nezhad A. Synthesis of a Novel Magnetic Reusable Organocatalyst Based on 4-Dialkylaminopyridines for Acyl Transformations. ChemistrySelect 2016. [DOI: 10.1002/slct.201600824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Farhad Panahi
- Department of Chemistry; College of Sciences; Shiraz 71454, Iran Iran
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
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11
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Dangolani SK, Panahi F, Nourisefat M, Khalafi-Nezhad A. 4-Dialkylaminopyridine modified magnetic nanoparticles: as an efficient nano-organocatalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives in water. RSC Adv 2016. [DOI: 10.1039/c6ra18078g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A new DMAP-based magnetic nano-organocatalyst was developed for efficient one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives in water as a green solvent.
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Affiliation(s)
| | - Farhad Panahi
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - Maryam Nourisefat
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Ali Khalafi-Nezhad
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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