1
|
Nakayama T, Fujiki S, Enda T, Kikkawa S, Hikawa H, Azumaya I. A sequential reaction of picolinamide with benzaldehydes promoted by Pd(TFA) 2: rapid access to 4,5-disubstituted 2-(pyridin-2-yl)oxazoles in n-octane. Org Biomol Chem 2024; 22:759-766. [PMID: 38168691 DOI: 10.1039/d3ob01815f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
We developed a synthetic method for obtaining 4,5-disubstituted 2-(pyridin-2-yl)oxazoles from picolinamide and aldehydes by employing Pd(TFA)2 as the catalyst in n-octane. This cascade reaction involves the condensation of picolinamide and two aldehyde molecules promoted by trifluoroacetic acid (TFA) generated in situ from Pd(TFA)2. This one-pot protocol provides rapid access to synthetically valuable triaryloxazoles from readily available starting materials under mild conditions. An 18O labeling study revealed that this tandem reaction proceeded via a different reaction mechanism compared to the Robinson-Gabriel oxazole synthesis.
Collapse
Affiliation(s)
- Taku Nakayama
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Sayaka Fujiki
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Tomokatsu Enda
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| |
Collapse
|
2
|
Savelson E, Tepe JJ. One-Pot Friedel-Crafts/Robinson-Gabriel Synthesis of the Indole-Oxazole Scaffold and Its Application to the Synthesis of Breitfussins C, G, and H. J Org Chem 2023; 88:755-761. [PMID: 35235750 DOI: 10.1021/acs.joc.2c00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The indole-oxazole scaffold is found in a range of biologically active natural products, including the breitfussin family. Divergent methods that provide access to the indole-oxazole template are relatively scarce, which impedes the wider exploration of these natural products and their exciting biological activity. Herein, we describe a highly divergent synthesis of the indole-oxazole scaffold via a one-pot Friedel-Crafts/Robinson-Gabriel synthesis and the application of this methodology to the synthesis of breitfussins C, G, and H.
Collapse
Affiliation(s)
- Evan Savelson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48823, United States
| | - Jetze J Tepe
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48823, United States
| |
Collapse
|
3
|
Shinde RS, Narnawre AR, Walke PM, Karade NN. (Diacetoxyiodo)benzene Mediated Oxidative Conversion of Erlenmeyer Azlactones to 2‐Substituted Oxazolines Under Basic Conditions: Synthesis of 4‐Methoxy‐2‐phenyl‐5‐aryl‐4,5‐dihydrooxazole‐4‐carboxylate. ChemistrySelect 2023. [DOI: 10.1002/slct.202203899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Rameshwar S. Shinde
- Department of Chemistry Rashtrasant Tukadoji Maharaj Nagpur University Nagpur Maharashtra 440 033 India
| | - Aditya R. Narnawre
- Department of Chemistry Rashtrasant Tukadoji Maharaj Nagpur University Nagpur Maharashtra 440 033 India
| | - Prashik M. Walke
- Department of Chemistry Rashtrasant Tukadoji Maharaj Nagpur University Nagpur Maharashtra 440 033 India
| | - Nandkishor N. Karade
- Department of Chemistry Rashtrasant Tukadoji Maharaj Nagpur University Nagpur Maharashtra 440 033 India
| |
Collapse
|
4
|
Kajol K, Ramesh C. Sequential One‐pot Method for the Synthesis of 4‐(Hydroxymethyl)oxazoles and their Application in Phosphonates Synthesis. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Km Kajol
- Medicinal & Process Chemistry Division CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
| | - Chintakunta Ramesh
- Medicinal & Process Chemistry Division CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension Sitapur Road, P.O. Box 173 Lucknow 226031 India
- Academy of Scientific and Innovative Research New Delhi 110001 India
| |
Collapse
|
5
|
Wu D, Lu Y, Hao W, Tu S, Jiang B. Synthesis of Fully Substituted Oxazoles via an NFSI/KF‐Mediated Double Bond Cleavage‐Rearrangement Cascade. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000627] [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)
- Dan Wu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Yi Lu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Wen‐Juan Hao
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Shu‐Jiang Tu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Bo Jiang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 P. R. China
| |
Collapse
|
6
|
Cankařová N, Krchňák V. Isocyanide Multicomponent Reactions on Solid Phase: State of the Art and Future Application. Int J Mol Sci 2020; 21:E9160. [PMID: 33271974 PMCID: PMC7729642 DOI: 10.3390/ijms21239160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 01/17/2023] Open
Abstract
Drug discovery efforts largely depend on access to structural diversity. Multicomponent reactions allow for time-efficient chemical transformations and provide advanced intermediates with three or four points of diversification for further expansion to a structural variety of organic molecules. This review is aimed at solid-phase syntheses of small molecules involving isocyanide-based multicomponent reactions. The majority of all reported syntheses employ the Ugi four-component reaction. The review also covers the Passerini and Groebke-Blackburn-Bienaymé reactions. To date, the main advantages of the solid-phase approach are the ability to prepare chemical libraries intended for biological screening and elimination of the isocyanide odor. However, the potential of multicomponent reactions has not been fully exploited. The unexplored avenues of these reactions, including chiral frameworks, DNA-encoded libraries, eco-friendly synthesis, and chiral auxiliary reactions, are briefly outlined.
Collapse
Affiliation(s)
- Naděžda Cankařová
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 779 00 Olomouc, Czech Republic;
| | - Viktor Krchňák
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 779 00 Olomouc, Czech Republic;
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, IN 46556, USA
| |
Collapse
|
7
|
Chen J, Li Z, Suleman M, Wang Z, Lu P, Wang Y. TfOH-promoted synthesis of 4,5-dihydrooxazolo[5,4- c]isoquinolines via formal [3 + 2] cycloaddition of 4-diazoisoquinolin-3-one and benzonitriles. Org Biomol Chem 2020; 18:7671-7676. [PMID: 32966526 DOI: 10.1039/d0ob01748e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A facile and efficient method for the synthesis of novel 2-substituted 4-tosyl-4,5-dihydrooxazolo[5,4-c]isoquinolines from 4-diazoisoquinolin-3-ones and nitriles is reported. The reaction proceeded through a TfOH-promoted formal [3 + 2] cycloaddition and the products could be conveniently converted to 2-aryloxazolo[5,4-c]isoquinolines and the subsequent 2-(oxazolo[5,4-c]isoquinolin-2-yl)phenol which emitted bright green light in dilute dichloromethane solution and in solid form as well. Simple operation, metal-free and mild reaction conditions, short reaction time and broad substrate scope are the prominent features of this methodology.
Collapse
Affiliation(s)
- Junrong Chen
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
| | | | | | | | | | | |
Collapse
|
8
|
Das D, Mukherjee P, Das AR. "On water" palladium catalyzed diastereoselective boronic acid addition to structurally diverse cyclopropane nitriles. Org Biomol Chem 2020; 18:8886-8898. [PMID: 33108794 DOI: 10.1039/d0ob00077a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient palladium catalyzed diastereoselective addition of arylboronic acids to complex spirocyclopropyl dinitriles is developed in the presence of a catalytic amount of 4-dodecylbenzenesulphonic acid (DBSA) as a Brønsted acid surfactant in aqueous media. The protocol is also found to be highly effective when different types of nitrile compounds and organo-boron compounds are used. The overall reaction has been found to be very cost efficient since it requires low catalyst loading, mild thermal energy and short reaction time. Wide substrate scope, operational simplicity, good to excellent product yield, and use of green solvents make the reaction a practical route to transform nitrile into a keto functionality in biorelevant heterocyclic scaffolds. The scale-up synthesis of the target scaffolds can also be achieved with ease which also signifies the practicability of this protocol.
Collapse
Affiliation(s)
- Dwaipayan Das
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
| | | | | |
Collapse
|
9
|
Abstract
Traceless solid-phase synthesis represents an ultimate sophisticated synthetic strategy on insoluble supports. Compounds synthesized on solid supports can be released without a trace of the linker that was used to tether the intermediates during the synthesis. Thus, the target products are composed only of the components (atoms, functional groups) inherent to the target core structure. A wide variety of synthetic strategies have been developed to prepare products in a traceless manner, and this review is dedicated to all aspects of traceless solid-phase organic synthesis. Importantly, the synthesis does not need to be carried out on a linker designed for traceless synthesis; most of the synthetic approaches described herein were developed using standard, commercially available linkers (originally devised for solid-phase peptide synthesis). The type of structure prepared in a traceless fashion is not restricted. The individual synthetic approaches are divided into eight sections, each devoted to a different methodology for traceless synthesis. Each section consists of a brief outline of the synthetic strategy followed by a description of individual reported syntheses.
Collapse
Affiliation(s)
- Naděžda Cankařová
- Department of Organic Chemistry, Faculty of Science , Palacky University , 17. Listopadu 12 , Olomouc , 771 46 , Czech Republic
| | - Eva Schütznerová
- Department of Organic Chemistry, Faculty of Science , Palacky University , 17. Listopadu 12 , Olomouc , 771 46 , Czech Republic
| | - Viktor Krchňák
- Department of Organic Chemistry, Faculty of Science , Palacky University , 17. Listopadu 12 , Olomouc , 771 46 , Czech Republic.,Department of Chemistry and Biochemistry , University of Notre Dame , 251 Nieuwland Science Center , Notre Dame , Indiana 46556 , United States
| |
Collapse
|
10
|
Sun M, Zhao L, Ding MW. One-Pot–Three-Component Synthesis of 2-(1,2,3,4-Tetrahydroisoquinolin-1-yl)oxazoles via DEAD-Promoted Oxidative Ugi/Wittig Reaction. J Org Chem 2019; 84:14313-14319. [DOI: 10.1021/acs.joc.9b02016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mei Sun
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Long Zhao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Central China Normal University, Wuhan 430079, P. R. China
| |
Collapse
|
11
|
Shi X, Soulé J, Doucet H. Reaction Conditions for the Regiodivergent Direct Arylations at C2‐ or C5‐Positions of Oxazoles using Phosphine‐Free Palladium Catalysts. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900641] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xinzhe Shi
- Univ Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| | | | - Henri Doucet
- Univ Rennes, CNRS, ISCR-UMR 6226 F-35000 Rennes France
| |
Collapse
|
12
|
Jang HY, Damodar K, Kim JK, Jun JG. Efficient Synthesis and In Vitro
Biological Evaluation of 2,5-Diaryloxazoles as Potential Nitric Oxide Production Inhibitors. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ha Young Jang
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
| | - Kongara Damodar
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
| | - Jin-Kyung Kim
- Department of Biomedical Science, College of Natural Science; Catholic University of Daegu; Gyeungsan-Si 38430 South Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
| |
Collapse
|
13
|
Shalabi AR, Walther D, Baumann MH, Glennon RA. Deconstructed Analogues of Bupropion Reveal Structural Requirements for Transporter Inhibition versus Substrate-Induced Neurotransmitter Release. ACS Chem Neurosci 2017; 8:1397-1403. [PMID: 28220701 DOI: 10.1021/acschemneuro.7b00055] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Bupropion (1), an α-aminophenone uptake inhibitor at plasma membrane transporters for dopamine (DAT) and norepinephrine (NET), is a widely prescribed antidepressant and smoking cessation aid. Cathinone (2), a structurally simpler α-aminophenone, is a substrate-type releasing agent at the same transporters and a recognized drug of abuse. Our goal was to identify the structural features of α-aminophenones that govern the mechanistic transition from uptake inhibition to substrate-induced release. Deconstructed analogues of 1 were synthesized and compared for their ability to interact with DAT, NET, and the serotonin transporter (SERT) using in vitro assay methods. Bulky amine substituents resulted in compounds that function as DAT uptake inhibitors but not release agents, whereas smaller amine substituents result in relatively nonselective releasing agents at DAT and NET. Our findings add to empirical evidence supporting distinct molecular determinants for α-aminophenone- (i.e., cathinone-) related agents acting as transporter inhibitors versus those acting as releasers.
Collapse
Affiliation(s)
- Abdelrahman R. Shalabi
- Department of Medicinal
Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298 United States
| | - Donna Walther
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224, United States
| | - Michael H. Baumann
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224, United States
| | - Richard A. Glennon
- Department of Medicinal
Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23298 United States
| |
Collapse
|
14
|
Zhou RR, Cai Q, Li DK, Zhuang SY, Wu YD, Wu AX. Acid-Promoted Multicomponent Tandem Cyclization to Synthesize Fully Substituted Oxazoles via Robinson–Gabriel-Type Reaction. J Org Chem 2017; 82:6450-6456. [DOI: 10.1021/acs.joc.7b00763] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Rong-Rong Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Qun Cai
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Deng-Kui Li
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Shi-Yi Zhuang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| |
Collapse
|
15
|
Yang W, Zhang R, Yi F, Cai M. A Heterogeneous Gold(I)-Catalyzed [2 + 2 + 1] Annulation of Terminal Alkynes, Nitriles, and Oxygen Atoms Leading to 2,5-Disubstituted Oxazoles. J Org Chem 2017; 82:5204-5211. [PMID: 28459566 DOI: 10.1021/acs.joc.7b00386] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first heterogeneous gold(I)-catalyzed [2 + 2 + 1] annulation of terminal alkynes, nitriles, and oxygen atoms has been achieved by using an MCM-41-immobilized phosphine-gold(I) complex as catalyst and 8-methylquinoline N-oxide as oxidant under mild conditions, yielding a variety of 2,5-disubstituted oxazoles in good to excellent yields with broad substrate scope. The new heterogeneous gold(I) catalyst can easily be recovered by simple filtration of the reaction solution and recycled for at least eight times without significant loss of activity.
Collapse
Affiliation(s)
- Weisen Yang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University , Nanchang 330022, P. R. China.,College of Ecology and Resources Engineering, Wuyi University , Wuyishan City 354300, P. R. China
| | - Rongli Zhang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University , Nanchang 330022, P. R. China
| | - Feiyan Yi
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University , Nanchang 330022, P. R. China
| | - Mingzhong Cai
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University , Nanchang 330022, P. R. China
| |
Collapse
|
16
|
Soeta T, Matsumoto A, Sakata Y, Ukaji Y. Development of a One-Pot Synthetic Method for Multifunctional Oxazole Derivatives Using Isocyanide Dichloride. J Org Chem 2017; 82:4930-4935. [DOI: 10.1021/acs.joc.7b00296] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takahiro Soeta
- Division of Material Sciences,
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Akihiro Matsumoto
- Division of Material Sciences,
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yoko Sakata
- Division of Material Sciences,
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yutaka Ukaji
- Division of Material Sciences,
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| |
Collapse
|
17
|
Jalani HB, Venkateswararao E, Manickam M, Jung SH. Sequential One-Pot Synthesis of Imidazoles and2H-Imidazolones from β-Ketoamines, Acylating Agents and Ammonium Acetate. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.11005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hitesh B. Jalani
- College of Pharmacy and Institute of Drug Research and Development; Chungnam National University; Daejeon 34134 Korea
| | - Eeda Venkateswararao
- College of Pharmacy and Institute of Drug Research and Development; Chungnam National University; Daejeon 34134 Korea
| | - Manoj Manickam
- College of Pharmacy and Institute of Drug Research and Development; Chungnam National University; Daejeon 34134 Korea
| | - Sang-Hun Jung
- College of Pharmacy and Institute of Drug Research and Development; Chungnam National University; Daejeon 34134 Korea
| |
Collapse
|
18
|
Stroganova TA, Vasilin VK, Shestakova PS, Red'kin VM, Krapivin GD. Novel Rearrangement of 3-Acylaminofuro[2,3-b]pyridines into 3-(oxazol-4-yl)pyridin-2-ones. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tatyana A. Stroganova
- Kuban State Technological University; Moskovskaya Street 2 Krasnodar 350072 Russian Federation
| | - Vladimir K. Vasilin
- Kuban State Technological University; Moskovskaya Street 2 Krasnodar 350072 Russian Federation
| | - Polina S. Shestakova
- Kuban State Technological University; Moskovskaya Street 2 Krasnodar 350072 Russian Federation
| | - Viktor M. Red'kin
- Kuban State Technological University; Moskovskaya Street 2 Krasnodar 350072 Russian Federation
| | - Gennady D. Krapivin
- Kuban State Technological University; Moskovskaya Street 2 Krasnodar 350072 Russian Federation
| |
Collapse
|
19
|
Yuan S, Li Z, Xu L. Convenient One-Pot Synthesis of 2,5-Disubstituted Oxazoles via a Catalytic Oxidative Dehydrogenation of F3CSO3H·SiO2-DDQ/CuCl2/LiCl. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shizhen Yuan
- Department of Chemistry; Anhui University of Architecture; Hefei Anhui 230022 China
| | | | - Ling Xu
- Department of Chemistry; Anhui University of Architecture; Hefei Anhui 230022 China
| |
Collapse
|
20
|
Eftekhari-Sis B, Zirak M, Akbari A. Arylglyoxals in Synthesis of Heterocyclic Compounds. Chem Rev 2013; 113:2958-3043. [DOI: 10.1021/cr300176g] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bagher Eftekhari-Sis
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
| | - Maryam Zirak
- Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran,
Iran
| | - Ali Akbari
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
| |
Collapse
|
21
|
Kawase M, Saijo R, Kurihara KI. 4-Trifluoroacetyl-2-phenyloxazol-5-one: Versatile Template for Synthesis of Trifluoromethyl-Substituted Heterocycles. HETEROCYCLES 2013. [DOI: 10.3987/com-13-12838] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
22
|
Zhong CL, Tang BY, Yin P, Chen Y, He L. Synthesis of 2,5-Disubstituted Oxazoles and Oxazolines Catalyzed by Ruthenium(II) Porphyrin and Simple Copper Salts. J Org Chem 2012; 77:4271-7. [PMID: 22436032 DOI: 10.1021/jo202663n] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chuan Long Zhong
- Key Laboratory of Drug-Targeting
and Drug-Delivery Systems of the Ministry of Education, Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University,
Chengdu, Sichuan, 610041, P. R. China
| | - Bo Yang Tang
- Key Laboratory of Drug-Targeting
and Drug-Delivery Systems of the Ministry of Education, Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University,
Chengdu, Sichuan, 610041, P. R. China
| | - Ping Yin
- Key Laboratory of Drug-Targeting
and Drug-Delivery Systems of the Ministry of Education, Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University,
Chengdu, Sichuan, 610041, P. R. China
| | - Yue Chen
- Department of Nuclear Medicine,
Affiliated Hospital, Luzhou Medical College, No. 25 Taiping Street,
Luzhou, Sichuan, 646000, P. R. China
| | - Ling He
- Key Laboratory of Drug-Targeting
and Drug-Delivery Systems of the Ministry of Education, Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University,
Chengdu, Sichuan, 610041, P. R. China
| |
Collapse
|
23
|
Liu Z, Nefzi A. Ugi four-center three-component reaction for the parallel solid-phase synthesis of N-substituted thiomopholinones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
24
|
Wendlandt AE, Stahl SS. Copper(ii)-mediated oxidative cyclization of enamides to oxazoles. Org Biomol Chem 2012; 10:3866-70. [DOI: 10.1039/c2ob25310k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Patonay T, Kónya K, Juhász-Tóth É. Syntheses and transformations of α-azido ketones and related derivatives. Chem Soc Rev 2011; 40:2797-847. [DOI: 10.1039/c0cs00101e] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Ferreira PM, Castanheira EM, Monteiro LS, Pereira G, Vilaça H. A mild high yielding synthesis of oxazole-4-carboxylate derivatives. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
27
|
Liu Z, Nefzi A. Solid-phase synthesis of N-substituted pyrrolidinone-tethered N-substituted piperidines via Ugi reaction. JOURNAL OF COMBINATORIAL CHEMISTRY 2010; 12:566-70. [PMID: 20527770 PMCID: PMC2917892 DOI: 10.1021/cc100054u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Starting with resin-bound glutamic acid, an efficient synthesis of N-substituted pyrrolidinones is described, using the Ugi four-component reaction (U-4CR). The same methodology is employed to produce N-substituted pyrrolidinone tethered N-substituted piperidines.
Collapse
Affiliation(s)
- Zhang Liu
- Torrey Pines Institute for Molecular Studies, Port Saint Lucie, Florida 34987, USA
| | | |
Collapse
|
28
|
Murai K, Takahara Y, Matsushita T, Komatsu H, Fujioka H. Facile Preparation of Oxazole-4-carboxylates and 4-Ketones from Aldehydes using 3-Oxazoline-4-carboxylates as Intermediates. Org Lett 2010; 12:3456-9. [DOI: 10.1021/ol1012789] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yusuke Takahara
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tomoyo Matsushita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hideyuki Komatsu
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
29
|
Lee JJ, Kim J, Jun YM, Lee BM, Kim BH. Indium-mediated one-pot synthesis of benzoxazoles or oxazoles from 2-nitrophenols or 1-aryl-2-nitroethanones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.059] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
30
|
Beletskii EV, Kuznetsov MA. Synthesis of oxazoles from α,β-unsaturated carbonyl compounds through 2-acylaziridines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s107042800908020x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
31
|
Kocí J, Pudelová N, Krchnák V. Polymer-supported alpha-acylamino ketones: preparation and application in syntheses of 1,2,4-trisubstituted-1H-imidazoles. ACTA ACUST UNITED AC 2009; 11:397-402. [PMID: 19354277 DOI: 10.1021/cc800210q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polymer-supported alpha-acylamino ketones were prepared from resin-bound amines, bromoketones, and carboxylic acids. Selective monoalkylation of amines by bromoketones was carried out via 4-nitrobenzenesulfonamides. There was a striking difference in the reaction outcome between 2-Nos and 4-Nos derivatives. Alpha-acylamino ketones were converted to imidazoles. The cyclization was performed on resin, allowing further polymer-supported elaboration of imidazoles including synthesis of bis-heterocyclic compounds. A small combinatorial array of imidazoles was synthesized. Target compounds were prepared under mild conditions using commercially available building blocks for the introduction of three points of diversity.
Collapse
Affiliation(s)
- Jan Kocí
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | | | | |
Collapse
|
32
|
Thompson MJ, Adams H, Chen B. Development of a Diversity-Oriented Approach to Oxazole-5-amide Libraries. J Org Chem 2009; 74:3856-65. [DOI: 10.1021/jo900425w] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mark J. Thompson
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
| | - Harry Adams
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
| | - Beining Chen
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K
| |
Collapse
|
33
|
|
34
|
dos Santos A, El Kaïm L, Grimaud L, Ronsseray C. Unconventional oxazole formation from isocyanides. Chem Commun (Camb) 2009:3907-9. [DOI: 10.1039/b904699b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
35
|
Ferreira PMT, Monteiro LS, Pereira G. Synthesis of Substituted Oxazoles fromN-Acyl-β-hydroxyamino Acid Derivatives. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800602] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
36
|
Bey E, Marchais-Oberwinkler S, Kruchten P, Frotscher M, Werth R, Oster A, Algül O, Neugebauer A, Hartmann RW. Design, synthesis and biological evaluation of bis(hydroxyphenyl) azoles as potent and selective non-steroidal inhibitors of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) for the treatment of estrogen-dependent diseases. Bioorg Med Chem 2008; 16:6423-35. [DOI: 10.1016/j.bmc.2008.04.073] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 04/24/2008] [Accepted: 04/30/2008] [Indexed: 11/15/2022]
|
37
|
Martín R, Cuenca A, Buchwald SL. Sequential Copper-Catalyzed Vinylation/Cyclization: An Efficient Synthesis of Functionalized Oxazoles. Org Lett 2007; 9:5521-4. [DOI: 10.1021/ol7024718] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rubén Martín
- Department of Chemistry, Massachusetts Instituteof Technology, Cambridge, Massachusetts 02139
| | - Ana Cuenca
- Department of Chemistry, Massachusetts Instituteof Technology, Cambridge, Massachusetts 02139
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Instituteof Technology, Cambridge, Massachusetts 02139
| |
Collapse
|
38
|
Dolle RE, Le Bourdonnec B, Morales GA, Moriarty KJ, Salvino JM. Comprehensive survey of combinatorial library synthesis: 2005. ACTA ACUST UNITED AC 2006; 8:597-635. [PMID: 16961395 DOI: 10.1021/cc060095m] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
| | | | | | | | | |
Collapse
|
39
|
|
40
|
Biron E, Chatterjee J, Kessler H. Solid-Phase Synthesis of 1,3-Azole-Based Peptides and Peptidomimetics. Org Lett 2006; 8:2417-20. [PMID: 16706540 DOI: 10.1021/ol0607645] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] We report highly efficient two-step procedures for the synthesis of 1,3-oxazole-, thiazole-, and imidazole-containing peptides on solid phase from dipeptides composed of C-terminal threonine, serine, cysteine, or diaminopropionic acid by using different cyclodehydration procedures followed or preceded by oxidation. The methods are compatible with Fmoc solid-phase peptide synthesis conditions and with N-Fmoc, N-Boc, N-Cbz, and N-Alloc protecting groups.
Collapse
Affiliation(s)
- Eric Biron
- Department Chemie, Lehrstuhl II für Organische Chemie, Technische Universität München, Garching, Germany
| | | | | |
Collapse
|
41
|
Herrera A, Martínez-Alvarez R, Ramiro P, Molero D, Almy J. New Easy Approach to the Synthesis of 2,5-Disubstituted and 2,4,5-Trisubstituted 1,3-Oxazoles. The Reaction of 1-(Methylthio)acetone with Nitriles. J Org Chem 2006; 71:3026-32. [PMID: 16599597 DOI: 10.1021/jo052619v] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of 1-(methylthio)acetone with different nitriles in the presence of triflic anhydride led to the one-pot formation of 2-substituted 5-methyl-4-methylthio-1,3-oxazoles in good yield. 1,2- and 1,4-Bisozaxolyl-substituted benzenes were obtained when the reaction was carried out using aromatic dinitriles. The methylthio group at the C4 position of the oxazole ring was easily removed with Raney nickel to form 2-substituted 5-methyl-1,3-oxazoles in good yields. 4-Methylsulfonyl derivatives were prepared by the oxidation of the MeS group with m-CPBA. The proposed mechanism for the formation of oxazoles involves an unstable 1-(methylthio)-2-oxopropyl triflate, which was detected from the low-temperature NMR spectra.
Collapse
Affiliation(s)
- Antonio Herrera
- Departamento de Química Organica, Facultad de Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain
| | | | | | | | | |
Collapse
|