51
|
Chen T, Zhang Y, Fu Z, Huang W. Cyclopropanation of Fluorinated Sulfur Ylides with 1‐Azadienes: Facile Synthesis of CF
3
‐Substituted Spiro Scaffolds. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900651] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Tao Chen
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 China
| | - Ye Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 China
- Shaanxi Institute of Flexible Electronics (SIFE)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 China
- Shaanxi Institute of Flexible Electronics (SIFE)Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| |
Collapse
|
52
|
|
53
|
Carrër A, Turban S, Provost N, Caliez A, Lamarche G, Zanirato G, Beucher M, Pean C, Mirguet O, Perron-Sierra F, Michelet V. Juniperanol: First total synthesis and evaluation in Type 2 Diabetes disease. Bioorg Chem 2019; 92:103243. [PMID: 31518756 DOI: 10.1016/j.bioorg.2019.103243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/31/2019] [Accepted: 08/31/2019] [Indexed: 01/19/2023]
Abstract
The first total synthesis of juniperanol, the tricyclic sesquiterpenoid enantiomer of α-cedrol is described. The synthesis relies on stereoselective gold-catalyzed Ohloff-type propargylic ester rearrangement performed on a 10 g scale, and a carbocationic cascade in the presence of acetyl methanesulfonate. The ability of juniperanol to interfere in glucose processes in different cell types is described.
Collapse
Affiliation(s)
- A Carrër
- PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France
| | - S Turban
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - N Provost
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - A Caliez
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - G Lamarche
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - G Zanirato
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - M Beucher
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - C Pean
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - O Mirguet
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - F Perron-Sierra
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - V Michelet
- PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France; University Côte d'Azur, Institut de Chimie de Nice, Parc Valrose, Faculté des Sciences, 06100 Nice, France
| |
Collapse
|
54
|
Rinaldi A, Langé V, Gómez-Bengoa E, Zanella G, Scarpi D, Occhiato EG. Synthesis of Indenes by Tandem Gold(I)-Catalyzed Claisen Rearrangement/Hydroarylation Reaction of Propargyl Vinyl Ethers. J Org Chem 2019; 84:6298-6311. [DOI: 10.1021/acs.joc.9b00646] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Antonia Rinaldi
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| | - Vittoria Langé
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Giovanna Zanella
- Departamento de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Dina Scarpi
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| | - Ernesto G. Occhiato
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| |
Collapse
|
55
|
Dubovtsev AY, Dar'in DV, Kukushkin VY. Three‐Component [2+2+1] Gold(I)‐Catalyzed Oxidative Generation of Fully Substituted 1,3‐Oxazoles Involving Internal Alkynes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900097] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Dmitry V. Dar'in
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| |
Collapse
|
56
|
Praveen C. Dexterity of gold catalysis in controlling the regioselectivity of cycloaddition reactions. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2019. [DOI: 10.1080/01614940.2019.1594016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Chandrasekar Praveen
- Materials Electrochemistry Division, Central Electrochemical Research Institute (CSIR Laboratory), Karaikudi, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Central Electrochemical Research Institute (CSIR Laboratory), Karaikudi, Tamil Nadu, India
| |
Collapse
|
57
|
Ge S, Cao W, Kang T, Hu B, Zhang H, Su Z, Liu X, Feng X. Bimetallic Catalytic Asymmetric Tandem Reaction of β‐Alkynyl Ketones to Synthesize 6,6‐Spiroketals. Angew Chem Int Ed Engl 2019; 58:4017-4021. [DOI: 10.1002/anie.201812842] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 02/01/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Shulin Ge
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Weidi Cao
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Tengfei Kang
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Bowen Hu
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Hang Zhang
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| |
Collapse
|
58
|
Ge S, Cao W, Kang T, Hu B, Zhang H, Su Z, Liu X, Feng X. Bimetallic Catalytic Asymmetric Tandem Reaction of β‐Alkynyl Ketones to Synthesize 6,6‐Spiroketals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812842] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shulin Ge
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Weidi Cao
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Tengfei Kang
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Bowen Hu
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Hang Zhang
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and TechnologyMinistry of EducationCollege of Chemistry, Sichuan University Chengdu 610064 China
| |
Collapse
|
59
|
Dubovtsev AY, Dar'in DV, Krasavin M, Kukushkin VY. Gold-Catalyzed Oxidation of Internal Alkynes into Benzils and its Application for One-Pot Synthesis of Five-, Six-, and Seven-Membered Azaheterocycles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900108] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Dmitry V. Dar'in
- Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Mikhail Krasavin
- Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| |
Collapse
|
60
|
Gao Y, Liu D, Fu Z, Huang W. Facile Synthesis of 2,2-Diacyl Spirocyclohexanones via an N-Heterocyclic Carbene-Catalyzed Formal [3C + 3C] Annulation. Org Lett 2019; 21:926-930. [PMID: 30714381 DOI: 10.1021/acs.orglett.8b03892] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel strategy for the construction of 2,2-diacyl spirocyclohexanones 3 has been demonstrated on the basis of an NHC-catalyzed [3C + 3C] annulation of potassium 2-oxo-3-enoates with 2-ethylidene 1,3-indandiones. Furthermore, enantioenriched 3 was obtained in good to excellent yields with good enantioselectivities when chiral N-heterocyclic carbene (NHC) was employed. Notably, ring opening of the resulting 2,2-diacyl spirocyclohexanones 3 with hydrazine led to the formation of phthalazinones in good to excellent yields.
Collapse
Affiliation(s)
- Yaru Gao
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Dehai Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Zhenqian Fu
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Wei Huang
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| |
Collapse
|
61
|
Brambilla E, Pirovano V, Giannangeli M, Abbiati G, Caselli A, Rossi E. Gold-catalyzed cascade reactions of 4H-furo[3,2-b]indoles with propargyl esters: synthesis of 2-alkenylidene-3-oxoindolines. Org Chem Front 2019. [DOI: 10.1039/c9qo00647h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-Trienyliden-indolin-3-ones were synthesised in high yields via a gold catalysed cascade reaction between 4H-furo[3,2-b]indoles and propargyl esters.
Collapse
Affiliation(s)
- Elisa Brambilla
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Matteo Giannangeli
- Dipartimento di Chimica and ISTM-CNR
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Giorgio Abbiati
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Alessandro Caselli
- Dipartimento di Chimica and ISTM-CNR
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Elisabetta Rossi
- Dipartimento di Scienze Farmaceutiche – Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| |
Collapse
|
62
|
Abstract
Total syntheses of biologically and structurally fascinating sesterterpenoids published between Jan. 2012 and Jan. 2018 are summarized and discussed here.
Collapse
Affiliation(s)
- Yuye Chen
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- China
- Department of Chemistry and Shenzhen Grubbs Institute
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- China
| | - Shaoping Li
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
| |
Collapse
|
63
|
Bera S, Chatterjee B, Mondal D. Advances in the Asymmetric Synthesis of Bridged and Fused Bicyclic Acetals. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800904] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Smritilekha Bera
- School of Chemical Sciences; Central University of Gujarat; 382030 Gandhinagar Gujarat India
| | - Bhaskar Chatterjee
- Department of Chemistry, Nabadwip; Vidyasagar College; 741302 Nabadwip West Bengal India
| | - Dhananjoy Mondal
- School of Chemical Sciences; Central University of Gujarat; 382030 Gandhinagar Gujarat India
| |
Collapse
|
64
|
Mato M, García‐Morales C, Echavarren AM. Generation of Gold(I) Carbenes by Retro‐Buchner Reaction: From Cyclopropanes to Natural Products Synthesis. ChemCatChem 2018. [DOI: 10.1002/cctc.201801201] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mauro Mato
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili C/Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Cristina García‐Morales
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili C/Marcel⋅li Domingo s/n 43007 Tarragona Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i Virgili C/Marcel⋅li Domingo s/n 43007 Tarragona Spain
| |
Collapse
|
65
|
Pflästerer D, Rudolph M, Hashmi ASK. Gold-Catalyzed Hydrofunctionalizations and Spiroketalizations of Alkynes as Key Steps in Total Synthesis. Isr J Chem 2018. [DOI: 10.1002/ijch.201700056] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Daniel Pflästerer
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| |
Collapse
|
66
|
Mouriès-Mansuy V, Fensterbank L. Gold-Catalyzed Migration of Propargyl Acetate as an Entry into the Total Synthesis of Natural Products. Isr J Chem 2018. [DOI: 10.1002/ijch.201700074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Virginie Mouriès-Mansuy
- Sorbonne Université, CNRS; Institut Parisien de Chimie Moléculaire, UMR 8232; 4 place Jussieu 75005 Paris France
| | - Louis Fensterbank
- Sorbonne Université, CNRS; Institut Parisien de Chimie Moléculaire, UMR 8232; 4 place Jussieu 75005 Paris France
| |
Collapse
|
67
|
Affiliation(s)
- Patrick Y. Toullec
- Institute of Molecular Sciences; University of Bordeaux; 351, cours de la Libération 33405 Talence France
| | - Véronique Michelet
- University Côte d'Azur; Institut de Chimie de Nice, UMR 7272 CNRS; Parc Valrose, Faculté des Sciences 06100 Nice France
| |
Collapse
|
68
|
Yang J, Wu Y, Zhang M, Zhu D, Shen R. Gold-catalyzed Cycloisomerization of 2-Aryl-2-(arylamino)-3-butyn-1-ols toward 2-(2′-Aminoaryl)-2,5-dihydrofurans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jianlin Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Yuanhua Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Ming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Dunru Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| | - Ruwei Shen
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemical Engineering; Nanjing Tech University; Nanjing 210009 People's Republic of China
| |
Collapse
|
69
|
Zeng Q, Zhang L, Xiao Y, Zhang J. Divergent access to N-hydroxypyrroles and isoxazoles via the gold(i)- or Brønsted acid-catalysed regioselective cyclization of N-(2-trifluoromethyl-3-alkynyl) oximes. Org Biomol Chem 2018; 16:1375-1380. [PMID: 29411001 DOI: 10.1039/c7ob03107f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The divergent regioselective cyclization of N-(2-trifluoromethyl-3-alkynyl) oximes by a suitable choice of a gold(i) or a Brønsted acid catalyst, leading to 4-trifluoromethyl-N-hydroxypyrroles or 4-trifluoromethyl-5-alkylisoxazoles was developed. In order to avoid the tedious separation of unstable N-(2-trifluoromethyl-3-alkynyl) oximes, an easy two-step, one-pot synthesis of 4-trifluoromethyl-5-alkylisoxazoles was realized via the sequential oxidation of the corresponding hydroxylamines and subsequent treatment with the reductant, sodium thiosulfate (Na2S2O3). This two-step, one-pot procedure is a complementary method for the synthesis of 4-trifluoromethyl-5-alkylisoxazole from those unstable N-(2-trifluoromethyl-3-alkynyl) oximes.
Collapse
Affiliation(s)
- Qin Zeng
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200062, P. R. China.
| | | | | | | |
Collapse
|
70
|
Zhang FM, Zhang SY, Tu YQ. Recent progress in the isolation, bioactivity, biosynthesis, and total synthesis of natural spiroketals. Nat Prod Rep 2018; 35:75-104. [DOI: 10.1039/c7np00043j] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The isolation, bioactivity, biosynthesis, and total synthesis of natural spiroketals from 2011 to July 2017 have been summarized in this review.
Collapse
Affiliation(s)
- Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
- School of Chemistry and Chemical Engineering
| |
Collapse
|
71
|
Guo JM, Wang WB, Guo J, Zhu YS, Bai XG, Jin SJ, Wang QL, Bu ZW. Diastereoselective construction of 4-indole substituted chromans bearing a ketal motif through a three-component Friedel–Crafts alkylation/ketalization sequence. RSC Adv 2018; 8:15641-15651. [PMID: 35539466 PMCID: PMC9080074 DOI: 10.1039/c8ra02481b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/13/2018] [Indexed: 01/09/2023] Open
Abstract
The first TfOH-catalyzed three-component Friedel–Crafts alkylation/ketalization sequence of indoles, alcohols and ortho-hydroxychalcones was developed to afford a wide range of 4-indole substituted chromans bearing a ketal motif in 77–99% yields. Notably, only a simple filtration was needed to purify them. By altering methanol to CHCl3, 2,4-bisindole substituted chroman with the same indole substituent at the C2 and C4 positions was afforded. Moreover, 2,4-bisindole substituted chromans with different indole substituents could be obtained by treatment of 4-indole monosubstituted chromans with another indole molecule. The first TfOH-catalyzed three-component Friedel–Crafts alkylation/ketalization sequence of indoles, alcohols and ortho-hydroxychalcones was developed to afford a wide range of 4-indole substituted chromans bearing a ketal motif in 77–99% yields.![]()
Collapse
Affiliation(s)
- Jiao-Mei Guo
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Wen-Bo Wang
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Jia Guo
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Yan-Shuo Zhu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xu-Guan Bai
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Shao-Jing Jin
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Qi-Lin Wang
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhan-Wei Bu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| |
Collapse
|
72
|
Inagaki F, Nakazawa K, Maeda K, Koseki T, Mukai C. Substituent Effects in the Cyclization of Yne-Diols Catalyzed by Gold Complexes Featuring L2/Z-Type Diphosphinoborane Ligands. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00369] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fuyuhiko Inagaki
- Division of Pharmaceutical Sciences,
Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kenta Nakazawa
- Division of Pharmaceutical Sciences,
Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kakeru Maeda
- Division of Pharmaceutical Sciences,
Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Tomoya Koseki
- Division of Pharmaceutical Sciences,
Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Chisato Mukai
- Division of Pharmaceutical Sciences,
Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| |
Collapse
|
73
|
Affiliation(s)
- Seewon Joung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Rira Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| |
Collapse
|
74
|
Tugny C, Khaled O, Derat E, Goddard JP, Mouriès-Mansuy V, Fensterbank L. Gold(i)-catalyzed access to neomerane skeletons. Org Chem Front 2017. [DOI: 10.1039/c7qo00360a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The gold(i) catalyzed cycloisomerization of an enynyl propargylic ester, featuring a 1,2-acyloxy migration/intramolecular cyclopropanation sequence, opens a straightforward access to the 5,7,3-tricyclic skeleton of neomerane sesquiterpenes. The first total synthesis of 5-epi-valeneomerin B in 12 steps with an overall yield of 5.3% is reported.
Collapse
Affiliation(s)
- Coralie Tugny
- Institut Parisien de Chimie Moléculaire
- UPMC CNRS 8232
- F-75252 Paris Cedex 05
- France
| | - Omar Khaled
- Institut Parisien de Chimie Moléculaire
- UPMC CNRS 8232
- F-75252 Paris Cedex 05
- France
| | - Etienne Derat
- Institut Parisien de Chimie Moléculaire
- UPMC CNRS 8232
- F-75252 Paris Cedex 05
- France
| | - Jean-Philippe Goddard
- Laboratoire de Chimie Organique et Bioorganique EA4566
- Université de Haute-Alsace
- Ecole Nationale Supérieure de Chimie de Mulhouse
- F-68093 Mulhouse Cedex
- France
| | | | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire
- UPMC CNRS 8232
- F-75252 Paris Cedex 05
- France
| |
Collapse
|