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Cruz PDJ, Cassels WR, Chen CH, Johnson JS. Doubly stereoconvergent crystallization enabled by asymmetric catalysis. Science 2022; 376:1224-1230. [PMID: 35679416 PMCID: PMC9467684 DOI: 10.1126/science.abo5048] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthetic methods that enable simultaneous control over multiple stereogenic centers are desirable for the efficient preparation of pharmaceutical compounds. Herein, we report the discovery and development of a catalyst-mediated asymmetric Michael addition/crystallization-induced diastereomer transformation of broad scope. The sequence controls three stereogenic centers, two of which are stereochemically labile. The configurational instability of 1,3-dicarbonyls and nitroalkanes, typically considered a liability in stereoselective synthesis, is productively leveraged by merging enantioselective Brønsted base organocatalysis and thermodynamic stereocontrol using a single convergent crystallization. The synthesis of useful γ-nitro β-keto amides containing three contiguous stereogenic centers is thus achieved from Michael acceptors containing two prochiral centers.
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Affiliation(s)
- Pedro de Jesús Cruz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - William R. Cassels
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Chun-Hsing Chen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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2
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Kawafuchi H, Ma L, Hossain MI, Inokuchi T. O-AcylTEMPOs, a Modified and Fundamental, but Unexplored Carboxylic Derivative: Recent Progress in Synthetic Applications. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666191019102511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
O-Acylated 2,2,6,6-tetramethylpiperidine-N-oxyls (abbr. O-AcylTEMPOs) are
easily available and stable carboxylic derivatives, but their utility in organic synthesis is
unexplored in contrast to analogues, such as the N-methoxy-N-methylamides, known as
Weinreb amides. Especially, the O–N unit of the O-acylTEMPOs dictates a fairly electronwithdrawing
character for the carbonyl function. This enhances the reactivity and stability
of the resulting enolate ions. Accordingly, O-acylTEMPOs allow various transformations
and this review encompasses seven topics: (1) Reactivity of O-acylTEMPOs towards nucleophiles
and chemoselective transformations, (2) Reactivity of anionic species derived
from O-acylTEMPOs, (3) E-Selective Knoevenagel condensation of acetoacetylTEMPOs
and synthesis of furans, (4) Electrocyclization of 2,4-dienones derived from acetoacetic
derivatives and 2-substituted enals, (5) Diastereoselective addition of amide anion to O-(2-alkenoyl)TEMPOs
and β-amino acid synthesis, (6) Thermolysis of O-acylTEMPOs, and (7) Applications for Umpolung reactions
using O-benzoylTEMPOs, useful for the electrophilic amination of alkenes and alkynes.
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Affiliation(s)
- Hiroyuki Kawafuchi
- National Institute of Technology, Toyama College 13, Hongo-machi, Toyama, 939-8630, Japan
| | - Lijian Ma
- College of Chemistry, Sichuan University Chengdu 610064, China
| | - Md Imran Hossain
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, 419 Faser Hall, University, MS 38677, United States
| | - Tsutomu Inokuchi
- Graduate School of Natural Science and Technology, Okayama University, Tsushima-naka, Kita- Ku, 3-1-1, Okayama, 700-8530, Japan
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3
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Dillon AS, Kerr DJ, Flynn BL. Formation of Highly Substituted Indenes through Acid Promoted Cyclodehydration with Nucleophile Incorporation. J Org Chem 2019; 84:2756-2767. [PMID: 30673245 DOI: 10.1021/acs.joc.8b03042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Readily accessible 3-aryl-2-carboxypropenones (by Knoevenagel condensation) undergo acid promoted cyclodehydration with nucleophile incorporation to form highly substituted indenes. For stronger nucleophiles, nucleophile incorporation precedes cyclodehydration in a nucleophilic-addition-cyclodehydration (NAC) sequence. For weaker nucleophiles, cyclodehydration precedes nucleophile incorporation in a cyclodehydrative-nucleophilic-trapping (CNT) sequence, involving a reactive allyl cation intermediate. The substrate scope and preferred cyclization pathway (NAC or CNT) has been studied with respect to 3-aryl-2-carboxypropenone and the nature of the nucleophile. Also, for 1,3-diaryl-2-carboxypropenones, which can also undergo Nazarov cyclization, delineation between competing Nazarov and CNT pathways is controlled by the nature of the acid catalyst.
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Affiliation(s)
- Annaliese S Dillon
- Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville 3052 , Victoria , Australia
| | - Daniel J Kerr
- Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville 3052 , Victoria , Australia
| | - Bernard L Flynn
- Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville 3052 , Victoria , Australia
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4
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Misaki T, Tatsumi T, Okamoto T, Hayashi Y, Jin N, Sugimura T. Stereoconvergent 1,4-Addition Reaction of 5H-Oxazol-4-ones with E,Z Isomeric Mixture of Alkylidene β-Ketoesters Catalyzed by Chiral Guanidines. Chemistry 2018; 24:9778-9782. [PMID: 29741785 DOI: 10.1002/chem.201802271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Indexed: 12/13/2022]
Abstract
A 1,4-addition reaction of 5H-oxazol-4-ones to alkylidene β-ketoesters, which was catalyzed by using chiral guanidines via a dynamic kinetic resolution process that involved geometric isomerization of the alkylidene β-ketoesters, was developed. This method allowed using E,Z isomeric mixture of various acyclic alkylidene β-ketoesters to obtain the products stereoselectively. The relation between the geometry and the stereoselectivity of products was investigated, and the derivatization of the products to the corresponding α-acyl-γ-lactone was performed.
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Affiliation(s)
- Tomonori Misaki
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
| | - Toshifumi Tatsumi
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
| | - Tatsumasa Okamoto
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
| | - Yusuke Hayashi
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
| | - Nari Jin
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
| | - Takashi Sugimura
- Graduate School of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo, 678-1297, Japan
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5
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Donau SS, Bechmann M, Müller N, Nielsen TT, Wimmer R. ( Z
), Not ( E
) - An End to a Century of Confusion about the Double-Bond Stereoisomers of 3-Amino-2-cyanoacrylates. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Søren S. Donau
- Department of Chemistry and Bioscience; Aalborg University; Frederik Bajers Vej 7H 9220 Aalborg Ø Denmark
| | - Matthias Bechmann
- Institute of Organic Chemistry; Johannes Kepler University Linz; Altenbergerstr 69 4040 Linz Austria
| | - Norbert Müller
- Institute of Organic Chemistry; Johannes Kepler University Linz; Altenbergerstr 69 4040 Linz Austria
- Faculty of Science; University of South Bohemia; Branišovská 31 37005 České Budějovice Czech Republic
| | - Thorbjørn T. Nielsen
- Department of Chemistry and Bioscience; Aalborg University; Frederik Bajers Vej 7H 9220 Aalborg Ø Denmark
| | - Reinhard Wimmer
- Department of Chemistry and Bioscience; Aalborg University; Frederik Bajers Vej 7H 9220 Aalborg Ø Denmark
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6
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Nugent J, Schwartz BD. N-Methoxy-N-methylcyanoformamide, a Highly Reactive Reagent for the Formation of β-Keto Weinreb Amides and Unsymmetrical Ketones. Org Lett 2016; 18:3834-7. [DOI: 10.1021/acs.orglett.6b01844] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeremy Nugent
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Brett D. Schwartz
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
- Eskitis
Institute for Drug Discovery, Griffith University, Don Young Road, Nathan, QLD 4111, Australia
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7
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Abstract
The carbon–carbon (C–C) bond forms the ‘backbone’ of nearly every organic molecule, and lies at the heart of the chemical sciences! Let us explore designing of carbon–carbon frameworks at ambient conditions.
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Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis
- Department of Chemistry
- Visva-Bharati (a Central University)
- Santiniketan-731235
- India
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8
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Kawafuchi H, Ma LJ, Inokuchi T. O-AcylTEMPOs as a Modified Carboxylic Derivative and Their Analogues; Exploration of the Reactivity and Synthetic Applications. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroyuki Kawafuchi
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology, Toyama College
| | - Li-Jian Ma
- Graduate School of Natural Science and Technology, Okayama University
| | - Tsutomu Inokuchi
- Graduate School of Natural Science and Technology, Okayama University
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9
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Tarleton M, Dyson L, Gilbert J, Sakoff JA, McCluskey A. Focused library development of 2-phenylacrylamides as broad spectrum cytotoxic agents. Bioorg Med Chem 2013. [DOI: 10.1016/j.bmc.2012.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Tarleton M, Gilbert J, Sakoff JA, McCluskey A. Cytotoxic 2-phenyacrylnitriles, the importance of the cyanide moiety and discovery of potent broad spectrum cytotoxic agents. Eur J Med Chem 2012; 57:65-73. [PMID: 23047225 DOI: 10.1016/j.ejmech.2012.09.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 09/08/2012] [Accepted: 09/11/2012] [Indexed: 01/09/2023]
Abstract
We previously reported the discovery of a simple conjugated cyano pharmacophore which had led to the development of (Z)-2-(3,4-dichlorophenyl)-3-(4-nitrophenyl)acrylonitrile, as a selective inhibitor of oestrogen receptor positive (ER+ve) human breast cancer cell line, MCF-7. Further exploration though modification of the acrylonitrile and aromatic substituents has highlighted key structural components necessary for broad spectrum cytotoxicity. The acrylic acid derivates (Z)-2-(3,4-dichlorophenyl)-3-(4-nitrophenyl)acrylic acid and (Z)-2-(3,4-dichlorophenyl)-3-(4-methoxyphenyl)acrylic acid (9) were inactive; confirming the importance of the cyanide moiety. The most potent 2-phenylacrylonitriles synthesized were (Z)-2-(3,4-dichlorophenyl)-3-(1H-indol-3-yl)acrylonitrile and (Z)-2-(3,4-dichlorophenyl)-3-(1H-indol-5-yl)acrylonitrile (20) with an average GI(50) values of 1.4 and 0.53 μM respectively. Five additional (Z)-2-(3,4-dichlorophenyl)-3-(indolyl)acrylonitriles also displayed average GI(50) values of ≤8.4 μM. In the case of indole, this represents a 32-fold increase in broad spectrum cytotoxicity relative to the lead.
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Affiliation(s)
- Mark Tarleton
- Chemistry, School of Environmental & Life Science, The University of Newcastle, University Drive Callaghan, NSW 2308, Australia
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11
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Fan L, Chen W, Tang K, Wu D. Stereoselective Synthesis of α-Ylidene-β-dicarbonyl Compounds: A Mild PhI(OAc)2-mediated Dehydrogenation Process. CHEM LETT 2012. [DOI: 10.1246/cl.2012.940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Liyan Fan
- Department of Chemistry, Tongji University
| | - Wen Chen
- Department of Chemistry, Tongji University
| | | | - Dongbei Wu
- Department of Chemistry, Tongji University
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12
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Srikanth G, Ray UK, Srinivas Rao DVN, Gupta PB, Lavanya P, Islam A. Efficient Approach to Pure Entacapone and Related Compounds. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2010.539894] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- G. Srikanth
- a Chemical Research and Development, Aurobindo Pharma Limited , Hyderabad , India
- b Jawaharlal Nehru Technological University , Hyderabad , India
| | - Uttam Kumar Ray
- a Chemical Research and Development, Aurobindo Pharma Limited , Hyderabad , India
| | | | - P. Badarinadh Gupta
- a Chemical Research and Development, Aurobindo Pharma Limited , Hyderabad , India
| | - P. Lavanya
- a Chemical Research and Development, Aurobindo Pharma Limited , Hyderabad , India
| | - Aminul Islam
- a Chemical Research and Development, Aurobindo Pharma Limited , Hyderabad , India
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13
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Peña J, Moro RF, Basabe P, Marcos IS, Díez D. Solvent free l-proline-catalysed domino Knoevenagel/6π-electrocyclization for the synthesis of highly functionalised 2H-pyrans. RSC Adv 2012. [DOI: 10.1039/c2ra21306k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Peng W, Hirabaru T, Kawafuchi H, Inokuchi T. Substituent-Controlled Electrocyclization of 2,4-Dienones: Synthesis of 2,3,6-Trisubstituted 2H-Pyran-5-carboxylates and Their Transformations. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100780] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Chahrour O, Abdalla A, Lam F, Midgley C, Wang S. Synthesis and biological evaluation of benzyl styrylsulfonyl derivatives as potent anticancer mitotic inhibitors. Bioorg Med Chem Lett 2011; 21:3066-9. [PMID: 21463944 DOI: 10.1016/j.bmcl.2011.03.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 03/09/2011] [Accepted: 03/09/2011] [Indexed: 02/05/2023]
Abstract
We herein report the synthesis, biological activity and structure activity relationship of derivatives of benzylstyrylsulfone, benzylstyrylsulfine and benzylsulfonyl-N-phenylacetamide. A lead compound 7 represents a new class of mitotic inhibitors that demonstrates potent anti-proliferative activity and selectively induces cancer cell apoptosis while sparing non-transformed lung fibroblast.
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Affiliation(s)
- Osama Chahrour
- School of Pharmacy and Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, UK
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16
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Tarleton M, Gilbert J, Robertson MJ, McCluskey A, Sakoff JA. Library synthesis and cytotoxicity of a family of 2-phenylacrylonitriles and discovery of an estrogen dependent breast cancer lead compound. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00147c] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Pratap UR, Jawale DV, Waghmare RA, Lingampalle DL, Mane RA. Synthesis of 5-arylidene-2,4-thiazolidinediones by Knoevenagel condensation catalyzed by baker's yeast. NEW J CHEM 2011. [DOI: 10.1039/c0nj00691b] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Ma LJ, Mei ZW, Toyohara K, Kawafuchi H, Nokami J, Inokuchi T. Diastereoselective Michael Addition of Magnesium Amide toO-(2-Alkenoyl)TEMPOs and Comparison of Reactivity with Acyl Substituent-Modified Carboxylic Analogues. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20100172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Liu Q, Rovis T. Enantio- and diastereoselective intermolecular Stetter reaction of glyoxamide and alkylidene ketoamides. Org Lett 2009; 11:2856-9. [PMID: 19507841 DOI: 10.1021/ol901081a] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A triazolinylidene carbene catalyzed intermolecular Stetter reaction of glyoxamide and alkylidene ketoamides has been developed. 1,4-Dicarbonyl products are afforded in good to excellent yields, enantioselectivities, and diastereoselectivities. Further derivatization of the products affords useful intermediates for organic synthesis.
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Affiliation(s)
- Qin Liu
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
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20
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Affiliation(s)
- Anniina Erkkilä
- Laboratory of Organic Chemistry, Department of Chemical Technology, Helsinki University of Technology, P.O. Box 6100, FI-02015 TKK, Finland
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21
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Wang S, Zhang L. A highly efficient preparative method of alpha-ylidene-beta-diketones via Au(III)-catalyzed acyl migration of propargylic esters. J Am Chem Soc 2007; 128:8414-5. [PMID: 16802803 DOI: 10.1021/ja062777j] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient synthesis of alpha-alkylidene or benzylidene-beta-diketones from readily available propargylic esters has been developed. The proposed key transformation is a novel intramolecular acyl migration to nucleophilic AuIII-C(sp2) bonds. Noteworthy features of this method are its efficiency and stereoselectivity. The yields of this reaction were mostly close to quantitative, and high to excellent stereoselectivities were observed in the cases of dienyl beta-diketones.
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Affiliation(s)
- Shaozhong Wang
- Department of Chemistry/216, University of Nevada-Reno, 1664 North Virginia Street, Reno, NV 89557, USA
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22
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Inokuchi T, Kawafuchi H. Alkylation, Aldol, and Related Reactions of O-Alkanoyl- and 2-AlkenoylTEMPOs (2,2,6,6-Tetramethylpiperidine-N-oxyl): Insight into the Reactivity of Their Anionic Species in Comparison with Esters and Amides. J Org Chem 2007; 72:1472-5. [PMID: 17253744 DOI: 10.1021/jo0617316] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The lithium anionic species generated from O-alkanoylTEMPOs upon treatment with LDA were first employed as a nucleophile for alkylation, Michael addition, direct aldol reaction, and others. The alkylation occurred smoothly at the methylene carbon, and no alkylation was found in the isobutyryl analogue, while silylation was scarcely attainable. Substitutions of the heteroatom were achieved by reaction with PhSSPh and DEAD. The reactivity of these anionic species is successfully extended to aldol reactions in which moderate anti or syn selectivity was executed with propionyl derivatives. Tandem Michael addition of lithium amide followed by aldol reaction was performed on the O-crotonoylTEMPOs.
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Affiliation(s)
- Tsutomu Inokuchi
- Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University, Tsushima-naka, Okayama, 700-8530, Japan.
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23
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Sinha AK, Sharma A, Joshi BP. One-pot two-step synthesis of 4-vinylphenols from 4-hydroxy substituted benzaldehydes under microwave irradiation: a new perspective on the classical Knoevenagel–Doebner reaction. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.11.023] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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