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Jang WJ, Woo J, Yun J. Asymmetric Conjugate Addition of Chiral Secondary Borylalkyl Copper Species. Angew Chem Int Ed Engl 2021; 60:4614-4618. [PMID: 33225611 DOI: 10.1002/anie.202014425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Indexed: 12/23/2022]
Abstract
We report the diastereo- and enantioselective conjugate addition of chiral secondary borylalkyl copper species derived from borylalkenes in situ to α,β-unsaturated diesters. In the presence of a chiral bisphosphine-ligated CuH catalyst, the conjugate addition provides a direct access to enantioenriched alkylboron compounds containing two contiguous carbon stereogenic centers in good yield with high diastereo- and enantioselectivity (up to >98:2 dr, >99:1 er) by assembling readily available starting alkenyl reagents in a single operation without using preformed organometallic reagents or chiral auxiliaries. The resulting products were used in various organic transformations. The utility of the synthetic approach was highlighted by the synthesis of (-)-phaseolinic acid.
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Affiliation(s)
- Won Jun Jang
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 16419, Korea
| | - Jeongkyu Woo
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 16419, Korea
| | - Jaesook Yun
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 16419, Korea
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2
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Jang WJ, Woo J, Yun J. Asymmetric Conjugate Addition of Chiral Secondary Borylalkyl Copper Species. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Won Jun Jang
- Department of Chemistry and Institute of Basic Science Sungkyunkwan University Suwon 16419 Korea
| | - Jeongkyu Woo
- Department of Chemistry and Institute of Basic Science Sungkyunkwan University Suwon 16419 Korea
| | - Jaesook Yun
- Department of Chemistry and Institute of Basic Science Sungkyunkwan University Suwon 16419 Korea
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3
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Gangani AJ, Kumar P, Fernandes RA. Concise Stereoselective Synthesis of β-Hydroxy-γ-lactones: (4 R,5 R)-4-Hydroxy-γ-decalactone from the Japanese Orange Fly and Enantiomers of Arachnid Harvestmen Isolates. JOURNAL OF NATURAL PRODUCTS 2021; 84:120-125. [PMID: 33390009 DOI: 10.1021/acs.jnatprod.0c01207] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The naturally occurring (4R,5R)-4-hydroxy-γ-decalactone from the Japanese orange fly and the antipode of (4S,5R)-4-hydroxy-γ-dodecalactone from the harvestmen arachnid and their stereoisomers are synthesized from the chiral pool material d-glucono-δ-lactone in a few steps. The one-pot conversion of the latter to γ-vinyl-β-hydroxy-γ-lactone, cross-metathesis with requisite olefin, and hydrogenation enabled the synthesis of syn-lactones in just a two-pot operation. An additional efficient Pd-catalyzed allylic isomerization of γ-vinyl-β-hydroxy-γ-lactone led to the anti-lactones in high yields.
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Affiliation(s)
- Ashvin J Gangani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Praveen Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 Maharashtra, India
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4
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Matsumoto A, Lee HJ, Maruoka K. Development of New Radical-mediated Selective Reactions Promoted by Hypervalent Iodine(III) Reagents. CHEM REC 2020; 21:1342-1357. [PMID: 33210803 DOI: 10.1002/tcr.202000132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/22/2020] [Accepted: 10/22/2020] [Indexed: 11/09/2022]
Abstract
In this account, we describe our recent developments on the four-types of hypervalent iodine(III)-mediated radical reactions in organic synthesis. Firstly, the activation of aldehydic C-H bonds can be successfully effected with hypervalent iodine(III) reagents, thereby allowing the synthesis of various ketones with high efficiency. Secondly, the site-selective oxidation of unactivated C(sp3 )-H bonds of hydrocarbon substrates was realized with designer hypervalent iodine(III) reagents. Thirdly, various perfluoroalkyl and α-aminoalkyl radicals can be generated from sodium perfluoroalkanesulfinates and sodium α-aminoalkanesulfinates, respectively, under the influence of hypervalent iodine(III) reagents. Finally, the efficient generation of difluoromethyl radical from hypervalent difluoroacetoxyliodine(III) reagent was realized by photolysis. These four different strategies are illustrated by using various selective radical approaches.
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Affiliation(s)
- Akira Matsumoto
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto, 606-8501, Japan
| | - Hyo-Jun Lee
- Department of Chemistry, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto, 606-8501, Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
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5
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Fernandes RA, Chaudhari DA, Jha AK. Evolution of Strategies in Paraconic Acids Synthesis. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000353] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry Indian Institute of Technology Bombay Powai, Mumbai 400076 Maharashtra India
| | - Dipali A. Chaudhari
- Department of Chemistry Indian Institute of Technology Bombay Powai, Mumbai 400076 Maharashtra India
| | - Amit K. Jha
- Department of Chemistry Indian Institute of Technology Bombay Powai, Mumbai 400076 Maharashtra India
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6
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Intakaew N, Rithchumpon P, Prommin C, Yimklan S, Kungwan N, Thavornyutikarn P, Meepowpan P. Synthesis and characterization of novel chiral derivatizing agents containing β-keto-anthracene adducts (KAAs) by 1H-NMR: aromatic influence and chiral alcohol absolute configuration determination. Org Biomol Chem 2019; 17:541-554. [DOI: 10.1039/c8ob02662a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New chiral derivatizing agents and the effect of aromatic rings were investigated for absolute configuration of chiral alcohols via1H-NMR.
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Affiliation(s)
- Neeranuth Intakaew
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Puracheth Rithchumpon
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Chanatkran Prommin
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Saranphong Yimklan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Nawee Kungwan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | | | - Puttinan Meepowpan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
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7
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Selvakumar S, Kang QK, Arumugam N, Almansour AI, Kumar RS, Maruoka K. Hypervalent iodine(III) catalyzed radical hydroacylation of chiral alkylidenemalonates with aliphatic aldehydes under photolysis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Nallasivam JL, Fernandes RA. A protecting-group-free synthesis of (+)-nephrosteranic, (+)-protolichesterinic, (+)-nephrosterinic, (+)-phaseolinic, (+)-rocellaric acids and (+)-methylenolactocin. Org Biomol Chem 2017; 15:708-716. [DOI: 10.1039/c6ob02398c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A collective synthesis of a γ-butyrolactone class of paraconic acids such as (+)-methylenolactocin, (+)-phaseolinic acid, (+)-nephrosteranic acid, (+)-nephrosterinic acid, (+)-rocellaric acid and (+)-protolichesterinic acid is described.
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Affiliation(s)
- Jothi L. Nallasivam
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
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Nallasivam JL, Fernandes RA. A Concise Synthesis of (−)-Incrustoporin and its Analogues by Pd-catalyzed Suzuki-Miyaura Coupling fromγ-Vinyl-γ-butyrolactone. ChemistrySelect 2016. [DOI: 10.1002/slct.201601379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jothi L. Nallasivam
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai-400 076, Maharashtra India
| | - Rodney A. Fernandes
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai-400 076, Maharashtra India
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Selvakumar S, Sakamoto R, Maruoka K. Diastereoselective Radical Hydroacylation of Alkylidenemalonates with Aliphatic Aldehydes Initiated by Photolysis of Hypervalent Iodine(III) Reagents. Chemistry 2016; 22:6552-5. [PMID: 27097595 DOI: 10.1002/chem.201600425] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Indexed: 01/20/2023]
Abstract
Diastereoselective radical hydroacylation of chiral alkylidenemalonates with aliphatic aldehydes is realized by the combination of a hypervalent iodine(III) reagent and UV-light irradiation. The reaction is initiated by the photolysis of hypervalent iodine(III) reagents under mild, metal-free conditions, and is the first example of diastereoselective addition of acyl radicals to olefins to afford chiral ketones in a highly stereoselective fashion. The obtained optically active ketones are useful chiral synthons, as exemplified by the short formal synthesis of (-)-methyleneolactocin.
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Affiliation(s)
- Sermadurai Selvakumar
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan), Fax: (+81)75-753-4041
| | - Ryu Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan), Fax: (+81)75-753-4041
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan), Fax: (+81)75-753-4041.
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Chakrabarty K, Defrenza I, Denora N, Drioli S, Forzato C, Franco M, Lentini G, Nitti P, Pitacco G. Enzymatic resolution of α-methyleneparaconic acids and evaluation of their biological activity. Chirality 2015; 27:239-46. [PMID: 25581906 DOI: 10.1002/chir.22419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/31/2014] [Accepted: 11/18/2014] [Indexed: 12/12/2022]
Abstract
Both enantiomers of three biologically relevant paraconic acids-MB-3, methylenolactocin, and C75-were obtained with enantioselectivities up to 99% by kinetic enzymatic resolutions. Good enantiomeric excesses were obtained for MB-3 and methylenolactocin, using α-chymotrypsin and aminoacylase as enantiocomplementary enzymes, while C75 was resolved with aminoacylase. They all were evaluated for their antiproliferative, antibacterial, and antifungal activities, showing weak effects and practically no difference between enantiomers in each case. At high concentrations (16-64 µg/mL), (-)- C75 acted as an antimicrobial agent against Gram-positive bacteria.
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12
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Patil PH, Fernandes RA. A stereoselective synthesis of the reported structure of polyporolide. RSC Adv 2015. [DOI: 10.1039/c5ra07930f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A concise stereoselective synthesis of the reported structure of newly isolated acetogenin polyporolide is presented indicating a need for structure revision of the natural product.
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Affiliation(s)
- Pradnya H. Patil
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
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13
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Zeller MA, Riener M, Nicewicz DA. Butyrolactone synthesis via polar radical crossover cycloaddition reactions: diastereoselective syntheses of methylenolactocin and protolichesterinic acid. Org Lett 2014; 16:4810-3. [PMID: 25190259 DOI: 10.1021/ol5022993] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct catalytic synthesis of γ-butyrolactones from simple alkene and unsaturated acid starting materials is reported. The catalytic system consists of the Fukuzumi acridinium photooxidant and substoichiometric quantities of a redox-active cocatalyst. Oxidizable alkenes such as styrenes and trisubstituted aliphatic alkenes are cyclized with unsaturated acids via polar radical crossover cycloaddition (PRCC) reactions. This method has been applied to the diastereoselective total synthesis of methylenolactocin and protolichesterinic acid.
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Affiliation(s)
- Mary A Zeller
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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14
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Fernandes RA, Patil PH, Chowdhury AK. Ring-Closing Metathesis Enabled Efficient Synthesis ofγ-Butenolide Antifungal Agent (−)-Incrustoporin and its Analogues. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300216] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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The Orthoester Johnson-Claisen Rearrangement in the Synthesis of Bioactive Molecules, Natural Products, and Synthetic Intermediates - Recent Advances. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301033] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Fernandes RA, Chowdhury AK. A Synthesis of (-)-(R)- and (+)-(S)-Lavandulol, (+)-Lavandulyl 2-Methylbutanoate, and (+)-Lavandulyl Senecioate through Orthoester Johnson-Claisen Rearrangement. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300520] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Fernandes RA, Halle MB, Chowdhury AK, Ingle AB. Diastereoselective synthesis of (+)-nephrosterinic acid and (+)-protolichesterinic acid. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2011.12.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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18
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Haleema S, Sasi PV, Ibnusaud I, Polavarapu PL, Kagan HB. Enantiomerically pure compounds related to chiral hydroxy acids derived from renewable resources. RSC Adv 2012. [DOI: 10.1039/c2ra21205f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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Fernandes RA, Ingle AB, Chaudhari DA. Control of Diastereoselectivity in Orthoester Johnson-Claisen Rearrangement of Tartrate-Based Allyl Alcohol: An Efficient Synthesis of Arundic Acid, a Potential Therapeutic Agent for Alzheimer's Disease. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101420] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Total synthesis of (8S,11R,12R)- and (8R,11R,12R)-topsentolide B2 diastereomers and assignment of the absolute configuration. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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