1
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Yin H, Tian Y, Guo C, Song R, Yang D, Lv J. Cu(OTf) 2-Phosphoric Acid-Catalyzed Tandem Oxa-Nazarov Cyclization and Dibromination of Conjugated 1,2-Diketones. J Org Chem 2023; 88:15862-15870. [PMID: 37910640 DOI: 10.1021/acs.joc.3c01941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A facile tandem oxa-Nazarov cyclization and dibromination has been developed. The combination of Cu(OTf)2 and diphenyl phosphate (DPP-H) was found to synergistically promote the coupling of conjugated 1,2-diketones and N-bromosuccinimide to form 2,4-dibromo-3(2H)-furanones in good yields.
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Affiliation(s)
- Hongchao Yin
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Yuan Tian
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Chenxi Guo
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Ran Song
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Daoshan Yang
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jian Lv
- Key Laboratory of Optic-electric Sensing and Analytic Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
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2
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Abstract
Interrupted reactions reroute established processes to new and often unanticipated end points. Of particular interest are the cases in which a known reactive intermediate takes on a new reaction pathway, either because this pathway is lower in energy or because the conventional pathway is no longer available. Through analysis of documented cases, we aim to dissect the known interrupted reactions and trace their mechanistic origins. As new chemical processes are being discovered at a seemingly ever-increasing pace, it is likely that new interrupted reactions will continue to emerge. Our hope is that the cases considered in this Review will help identify new classes of these fascinating transformations.
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3
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Novel d-Annulated Pentacyclic Steroids: Regioselective Synthesis and Biological Evaluation in Breast Cancer Cells. Molecules 2020; 25:molecules25153499. [PMID: 32752019 PMCID: PMC7435891 DOI: 10.3390/molecules25153499] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 12/19/2022] Open
Abstract
The acid-catalyzed cyclization of benzylidenes based on 16-dehydropregnenolone acetate (16-DPA) was studied. It was found that these compounds readily undergo regioselective interrupted Nazarov cyclization with trapping chloride ion and an efficient method of the synthesis of d-annulated pentacyclic steroids based on this reaction was proposed. The structures of the synthesized pentacyclic steroids were determined by NMR and X-ray diffraction. It was found that the reaction affords a single diastereomer, but the latter can crystallize as two conformers depending on the structure. Antiproliferative activity of synthesized compounds was evaluated against two breast cancer cell lines: MCF-7 and MDA-MB-231. All tested compounds showed relatively high antiproliferative activity. The synthetic potential of the protocol developed was illustrated by the gram-scale experiment.
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4
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Affiliation(s)
- Anton V. Yadykov
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 47 Leninsky prosp., 119991 Moscow Russian Federation
| | - Valerii Z. Shirinian
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 47 Leninsky prosp., 119991 Moscow Russian Federation
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5
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Koenig JJ, Arndt T, Gildemeister N, Neudörfl JM, Breugst M. Iodine-Catalyzed Nazarov Cyclizations. J Org Chem 2019; 84:7587-7605. [DOI: 10.1021/acs.joc.9b01083] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jonas J. Koenig
- Department of Chemistry, University of Cologne, Greinstraße 4, 50939 Köln, Germany
| | - Thiemo Arndt
- Department of Chemistry, University of Cologne, Greinstraße 4, 50939 Köln, Germany
| | - Nora Gildemeister
- Department of Chemistry, University of Cologne, Greinstraße 4, 50939 Köln, Germany
| | - Jörg-M. Neudörfl
- Department of Chemistry, University of Cologne, Greinstraße 4, 50939 Köln, Germany
| | - Martin Breugst
- Department of Chemistry, University of Cologne, Greinstraße 4, 50939 Köln, Germany
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6
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Zhang H, Lu Z. Nickel/Copper Dual Catalysis for Sequential Nazarov Cyclization/Decarboxylative Aldol Reaction. Org Lett 2018; 20:5709-5713. [PMID: 30160123 DOI: 10.1021/acs.orglett.8b02426] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A nickel/copper cocatalyzed sequential Nazarov cyclization/decarboxylative aldol reaction is reported. Various β-hydroxycyclopentenones containing three contiguous stereocenters were prepared in good yields with high diastereoselectivities. A gram-scale reaction and further derivatizations were easily achieved to highlight the synthetic utility of this transformation. Preliminary attempts for sequential asymmetric transformation were also conducted.
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Affiliation(s)
- Heyi Zhang
- Department of Chemistry , Zhejiang University , 866 Yuhangtang Road , Hangzhou 310058 , China
| | - Zhan Lu
- Department of Chemistry , Zhejiang University , 866 Yuhangtang Road , Hangzhou 310058 , China
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7
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Congmon J, Tius MA. Contiguous Quaternary Centers from a Au
I
‐Catalyzed Nazarov Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jonathan Congmon
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
| | - Marcus A. Tius
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
- University of Hawaii Cancer Center 701 Ilalo Street 96813 Honolulu HI USA
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8
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Gelozia S, Kwon Y, McDonald R, West FG. One-Pot Generation of Bicyclo[3.1.0]hexanols and Cyclohexanones by Double Interrupted Nazarov Reactions. Chemistry 2018; 24:6052-6056. [PMID: 29444379 DOI: 10.1002/chem.201800758] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Indexed: 12/20/2022]
Abstract
Organoaluminum-mediated double interrupted Nazarov cyclization to access bicyclo[3.1.0]hexanols via nucleophilic methyl attack followed by Simmons-Smith-type electrophilic cyclopropanation is reported. These alcohols can undergo ring opening to afford cyclohexanones or cyclohexenones, broadening the range of scaffolds available via interrupted Nazarov reaction beyond the usual cyclopentanoid products. Throughout the sequence, a total of four new C-C bonds are formed, along with four new stereogenic centers.
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Affiliation(s)
- Shorena Gelozia
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - Yonghoon Kwon
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - F G West
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
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Dhanya BP, Gopalan G, Sasikumar P, Neethu S, Meenu MT, Sharathna P, John J, Varughese S, Sabu M, Dan M, Radhakrishnan KV. Lewis-Acid-Catalyzed Activation of Zerumbone towards Sesquiterpenoid Derivatives: Sustainable Utilization of Abundant Natural Resources for the Synthesis of Chemically Diverse Architectures. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bhandara Purayil Dhanya
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Greeshma Gopalan
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Parameswaran Sasikumar
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Sivadas Neethu
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Murugan Thulasi Meenu
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Puthiyaparambath Sharathna
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Jubi John
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Sunil Varughese
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
| | - Mamiyil Sabu
- Department of Botany; University of Calicut; Calicut-35 India
| | - Mathew Dan
- Genetic Resource Division; Jawaharlal Nehru Tropical Botanic Garden and Research Institute; Thiruvananthapuram-562 India)
| | - Kokkuvayil Vasu Radhakrishnan
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram-19 India
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10
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Yang B, Zhai X, Feng S, Shao Z. Dearomatization of naphthols using oxy-allyl cations: efficient construction of α-all-carbon quaternary center-containing 2-(2-oxocycloalkyl)cycloalkyl diketones. Org Chem Front 2018. [DOI: 10.1039/c8qo00783g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient strategy for the dearomatization of both α- and β-naphthols using in situ generated oxy-allyl cations is reported.
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Affiliation(s)
- Binmiao Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Xuejie Zhai
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Shubo Feng
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091
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11
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Pinacol rearrangement of cyclopent-3-en-1,2-diols: Cyclopentenone formation and interrupting reaction. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Sudhakar G, Mahesh SK, Vemulapalli SPB, Nanubolu JB. Nazarov Cyclization and Tandem [4 + 2]-Cycloaddition Reactions of Donor–Acceptor Cyclopropanes. Org Lett 2017; 19:4500-4503. [DOI: 10.1021/acs.orglett.7b02061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gangarajula Sudhakar
- Department of CPC (Organic Chemistry-II), ‡Centre for NMR and
Structural Chemistry, §Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - S. K. Mahesh
- Department of CPC (Organic Chemistry-II), ‡Centre for NMR and
Structural Chemistry, §Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - S. Phani Babu Vemulapalli
- Department of CPC (Organic Chemistry-II), ‡Centre for NMR and
Structural Chemistry, §Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Jagadeesh Babu Nanubolu
- Department of CPC (Organic Chemistry-II), ‡Centre for NMR and
Structural Chemistry, §Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
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13
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Abstract
The acid-promoted cycloisomerization of conjugated dienals and linearly-conjugated dienones for the synthesis of five-membered ring systems is reviewed.
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Affiliation(s)
- Martín J. Riveira
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
| | - Lucía A. Marsili
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
| | - Mirta P. Mischne
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
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