1
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Hemmerling F, Piel J. Strategies to access biosynthetic novelty in bacterial genomes for drug discovery. Nat Rev Drug Discov 2022; 21:359-378. [PMID: 35296832 DOI: 10.1038/s41573-022-00414-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2022] [Indexed: 12/17/2022]
Abstract
Bacteria provide a rich source of natural products with potential therapeutic applications, such as novel antibiotic classes or anticancer drugs. Bioactivity-guided screening of bacterial extracts and characterization of biosynthetic pathways for drug discovery is now complemented by the availability of large (meta)genomic collections, placing researchers into the postgenomic, big-data era. The progress in next-generation sequencing and the rise of powerful computational tools provide unprecedented insights into unexplored taxa, ecological niches and 'biosynthetic dark matter', revealing diverse and chemically distinct natural products in previously unstudied bacteria. In this Review, we discuss such sources of new chemical entities and the implications for drug discovery with a particular focus on the strategies that have emerged in recent years to identify and access novelty.
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Affiliation(s)
- Franziska Hemmerling
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland
| | - Jörn Piel
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland.
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2
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Baeva LA, Biktasheva LF, Nugumanov TR, Fatykhov AA. Multicomponent Synthesis of 1,3-Bis[(alkylsulfanyl)methyl]-1,3,5-triazinan-2-ones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428021120071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Chen J, Lv S, Liu J, Yu Y, Wang H, Zhang H. An Overview of Bioactive 1,3-Oxazole-Containing Alkaloids from Marine Organisms. Pharmaceuticals (Basel) 2021; 14:ph14121274. [PMID: 34959674 PMCID: PMC8706051 DOI: 10.3390/ph14121274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/20/2022] Open
Abstract
1,3-Oxazole chemicals are a unique class of five-membered monocyclic heteroarenes, containing a nitrogen atom and an oxygen. These alkaloids have attracted extensive attention from medicinal chemists and pharmacologists owing to their diverse arrays of chemical structures and biological activities, and a series of 1,3-oxazole derivatives has been developed into therapeutic agents (e.g., almoxatone, befloxatone, cabotegravir, delpazolid, fenpipalone, haloxazolam, inavolisib). A growing amount of evidence indicates that marine organisms are one of important sources of 1,3-oxazole-containing alkaloids. To improve our knowledge regarding these marine-derived substances, as many as 285 compounds are summarized in this review, which, for the first time, highlights their sources, structural features and biological properties, as well as their biosynthesis and chemical synthesis. Perspective for the future discovery of new 1,3-oxazole compounds from marine organisms is also provided.
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Affiliation(s)
- Jinyun Chen
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Sunyan Lv
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Jia Liu
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Yanlei Yu
- Collaborative Innovation Center of Green Pharmaceutics of Delta Yangzi Region, Zhejiang University of Technology, Hangzhou 310014, China;
| | - Hong Wang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
- Correspondence:
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Chiacchio MA, Lanza G, Chiacchio U, Giofrè SV, Romeo R, Iannazzo D, Legnani L. Oxazole-Based Compounds As Anticancer Agents. Curr Med Chem 2020; 26:7337-7371. [PMID: 30501590 DOI: 10.2174/0929867326666181203130402] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 10/22/2018] [Accepted: 11/15/2018] [Indexed: 11/22/2022]
Abstract
Heterocyclic compounds represent a significant target for anti-cancer research and drug discovery, due to their structural and chemical diversity. Oxazoles, with oxygen and nitrogen atoms present in the core structure, enable various types of interactions with different enzymes and receptors, favoring the discovery of new drugs. Aim of this review is to describe the most recent reports on the use of oxazole-based compounds in anticancer research, with reference to the newly discovered iso/oxazole-based drugs, to their synthesis and to the evaluation of the most biologically active derivatives. The corresponding dehydrogenated derivatives, i.e. iso/oxazolines and iso/oxazolidines, are also reported.
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Affiliation(s)
- Maria A Chiacchio
- Dipartimento di Scienze del Farmaco, University of Catania, V.le Doria 6, 95125 Catania, Italy
| | - Giuseppe Lanza
- Dipartimento di Scienze del Farmaco, University of Catania, V.le Doria 6, 95125 Catania, Italy
| | - Ugo Chiacchio
- Dipartimento di Scienze del Farmaco, University of Catania, V.le Doria 6, 95125 Catania, Italy
| | - Salvatore V Giofrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Roberto Romeo
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Daniela Iannazzo
- Dipartimento di Ingegneria, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| | - Laura Legnani
- Dipartimento di Scienze del Farmaco, University of Catania, V.le Doria 6, 95125 Catania, Italy.,Dipartimento di Chimica, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
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Tomassetti M, Lupidi G, Piermattei P, Rossi FV, Lillini S, Bianchini G, Aramini A, Ciufolini MA, Marcantoni E. Catalyst-Free Synthesis of Polysubstituted 5-Acylamino-1,3-Thiazoles via Hantzsch Cyclization of α-Chloroglycinates. Molecules 2019; 24:molecules24213846. [PMID: 31731437 PMCID: PMC6864457 DOI: 10.3390/molecules24213846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 11/17/2022] Open
Abstract
A catalyst-free heterocyclization reaction of α-chloroglycinates with thiobenzamides or thioureas leading to 2,4-disubstituted-5-acylamino-1,3-thiazoles has been developed. The methodology provides straightforward access to valuable building blocks for pharmaceutically relevant compounds.
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Affiliation(s)
- Mara Tomassetti
- Dompé Farmaceutici S.p.A., Via Pietro Castellino, Napoli 80131, Italy; (S.L.); (A.A.)
- Correspondence: (M.T.); (E.M.); Tel.: +39-(816)-132-220 (M.T.); Tel.: +39-(737)-402-255 (E.M.)
| | - Gabriele Lupidi
- School of Science and Technology, Chemistry Division, University of Camerino, Camerino 62032, Italy; (G.L.); (P.P.); (F.V.R.)
| | - Pamela Piermattei
- School of Science and Technology, Chemistry Division, University of Camerino, Camerino 62032, Italy; (G.L.); (P.P.); (F.V.R.)
| | - Federico V. Rossi
- School of Science and Technology, Chemistry Division, University of Camerino, Camerino 62032, Italy; (G.L.); (P.P.); (F.V.R.)
| | - Samuele Lillini
- Dompé Farmaceutici S.p.A., Via Pietro Castellino, Napoli 80131, Italy; (S.L.); (A.A.)
| | | | - Andrea Aramini
- Dompé Farmaceutici S.p.A., Via Pietro Castellino, Napoli 80131, Italy; (S.L.); (A.A.)
- Dompé Farmaceutici S.p.A., Via Campo di Pile, L’Aquila 67100, Italy;
| | - Marco A. Ciufolini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada;
| | - Enrico Marcantoni
- School of Science and Technology, Chemistry Division, University of Camerino, Camerino 62032, Italy; (G.L.); (P.P.); (F.V.R.)
- Correspondence: (M.T.); (E.M.); Tel.: +39-(816)-132-220 (M.T.); Tel.: +39-(737)-402-255 (E.M.)
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6
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Baeva LA, Nugumanov RM, Fatykhov AA, Lyapina NK. Synthesis of 4-[Alkylsulfanyl(sulfonyl)methyl]isoxazoles and -1H-pyrazoles from 3-[(Alkylsulfanyl)methyl]- pentane-2,4-diones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018030120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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8
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Liu Q, Zhang X, He Y, Hussain MI, Hu W, Xiong Y, Zhu X. Oxidative rearrangement strategy for synthesis of 2,4,5-trisubstituted oxazoles utilizing hypervalent iodine reagent. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Patil PC, Luzzio FA. Synthesis of Extended Oxazoles III: Reactions of 2-(Phenylsulfonyl)methyl-4,5-diaryloxazoles. J Org Chem 2016; 81:10521-10526. [PMID: 27441569 DOI: 10.1021/acs.joc.6b01280] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
2-((Phenylsulfonyl)methyl)-4,5-diphenyloxazole is a useful scaffold for synthetic elaboration at the 2-methylene position thereby affording extended oxazoles. The corresponding α-sulfonyl anion reacts smoothly with diverse alkyl halides giving monoalkylated (47-90%), dialkylated (50-97%), and cyclic (59-93%) products. The reductive desulfonylation of the monoalkylated and selected dialkylated products was optimized with a magnesium/mercuric chloride reagent system and afforded desulfonylated products in the range of 66-97%. The anti-inflammatory Oxaprozin was prepared using the α-sulfonyl carbanion strategy along with optimized desulfonylation.
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Affiliation(s)
- Pravin C Patil
- Department of Chemistry, University of Louisville , 2320 South Brook Street, Louisville, Kentucky 40292, United States
| | - Frederick A Luzzio
- Department of Chemistry, University of Louisville , 2320 South Brook Street, Louisville, Kentucky 40292, United States
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Korp J, Vela Gurovic MS, Nett M. Antibiotics from predatory bacteria. Beilstein J Org Chem 2016; 12:594-607. [PMID: 27340451 PMCID: PMC4902038 DOI: 10.3762/bjoc.12.58] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 03/11/2016] [Indexed: 11/23/2022] Open
Abstract
Bacteria, which prey on other microorganisms, are commonly found in the environment. While some of these organisms act as solitary hunters, others band together in large consortia before they attack their prey. Anecdotal reports suggest that bacteria practicing such a wolfpack strategy utilize antibiotics as predatory weapons. Consistent with this hypothesis, genome sequencing revealed that these micropredators possess impressive capacities for natural product biosynthesis. Here, we will present the results from recent chemical investigations of this bacterial group, compare the biosynthetic potential with that of non-predatory bacteria and discuss the link between predation and secondary metabolism.
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Affiliation(s)
- Juliane Korp
- Leibniz Institute for Natural Product Research and Infection Biology – Hans-Knöll-Institute, Beutenbergstr. 11, 07745 Jena, Germany
| | - María S Vela Gurovic
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS) -CONICET- Carrindanga Km 11, Bahía Blanca 8000, Argentina
| | - Markus Nett
- Leibniz Institute for Natural Product Research and Infection Biology – Hans-Knöll-Institute, Beutenbergstr. 11, 07745 Jena, Germany
- Department of Biochemical and Chemical Engineering, Technical Biology, Technical University Dortmund, Emil-Figge-Strasse 66, 44227 Dortmund, Germany
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Imai S, Kikui H, Moriyama K, Togo H. One-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from aromatic ketones with molecular iodine, oxone, and trifluoromethanesulfonic acid in nitriles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Halli J, Hofman K, Beisel T, Manolikakes G. Synthesis ofN-Acyl-N,O-acetals from Aldehydes, Amides and Alcohols. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500655] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Selvi T, Srinivasan K. Synthesis of 2,4,5-trisubstituted oxazoles through tin(iv) chloride-mediated reaction of trans-2-aryl-3-nitro-cyclopropane-1,1-dicarboxylates with nitriles. Chem Commun (Camb) 2014; 50:10845-8. [DOI: 10.1039/c4cc04764h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Abstract
This paper highlights ongoing efforts toward Erythrina alkaloids, himandrine, tetrodotoxin, and thiopeptide antibiotics such as nosiheptide and describes representative spinoffs in biomedicine that emanated from the author’s research in synthetic organic chemistry.
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Affiliation(s)
- Marco A. Ciufolini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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16
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Yu X, Xin X, Wan B, Li X. Base-Catalyzed Cyclization of N-Sulfonyl Propargylamides to Sulfonylmethyl-Substituted Oxazoles via Sulfonyl Migration. J Org Chem 2013; 78:4895-904. [DOI: 10.1021/jo4004635] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xinzhang Yu
- Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian
116023, China
| | - Xiaoyi Xin
- Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian
116023, China
| | - Boshun Wan
- Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian
116023, China
| | - Xingwei Li
- Dalian Institute
of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian
116023, China
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17
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Shah SR, Navathe SS, Dikundwar AG, Guru Row TN, Vasella AT. Thermal Rearrangement of Azido Ketones into Oxazoles via Azirines: One-Pot, Metal-Free Heteroannulation to Functionalized 1,3-Oxazoles. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201269] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Deng J, Wang F, Yan W, Zhu J, Jiang H, Wang W, Li J. Synthesis of 3-substituted 1,5-aldehyde estersvia an organocatalytic highly enantioselective conjugate addition of new carbonylmethyl 2-pyridinylsulfone to enals. Chem Commun (Camb) 2012; 48:148-50. [DOI: 10.1039/c1cc15714k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Li X, Huang L, Chen H, Wu W, Huang H, Jiang H. Copper-catalyzed oxidative [2 + 2 + 1] cycloaddition: regioselective synthesis of 1,3-oxazoles from internal alkynes and nitriles. Chem Sci 2012. [DOI: 10.1039/c2sc21041j] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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21
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Bouma MJ, Masson G, Zhu J. Exploiting the Divergent Reactivity of Isocyanoacetates: One-Pot Three-Component Synthesis of Functionalized Angular Furoquinolines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101567] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Bartoli G, Cimarelli C, Cipolletti R, Diomedi S, Giovannini R, Mari M, Marsili L, Marcantoni E. Microwave-Assisted Cerium(III)-Promoted Cyclization of Propargyl Amides to Polysubstituted Oxazole Derivatives. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101302] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang J, Ciufolini MA. An Approach to the Bis-oxazole Macrocycle of Diazonamides. Org Lett 2010; 13:390-3. [DOI: 10.1021/ol102678j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianmin Zhang
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Marco A. Ciufolini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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Zhang J, Coqueron PY, Vors JP, Ciufolini MA. Synthesis of 5-amino-oxazole-4-carboxylates from alpha-chloroglycinates. Org Lett 2010; 12:3942-5. [PMID: 20698488 DOI: 10.1021/ol101704r] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aluminum-based Lewis acids are effective promoters of the condensation of alpha-chloroglycinates with isonitriles or with cyanide ion, leading to the formation of 5-amino-oxazoles.
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Affiliation(s)
- Jianmin Zhang
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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Davyt D, Serra G. Thiazole and oxazole alkaloids: isolation and synthesis. Mar Drugs 2010; 8:2755-80. [PMID: 21139843 PMCID: PMC2996175 DOI: 10.3390/md8112755] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 10/27/2010] [Accepted: 11/04/2010] [Indexed: 12/22/2022] Open
Abstract
Thiazoles, oxazole and their corresponding reduced derivatives, thiazolines and oxazolines, are found in marine sources exhibiting significant biological activities. The isolation, synthetic, and biological studies of these natural products, covering literature from January 2007 to June 2010, are summarized.
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Affiliation(s)
- Danilo Davyt
- *Authors to whom correspondence should be addressed; E-Mails: (D.D.); (G.S.); Tel.: +598 2 9290290; Fax: +598 2 9241906
| | - Gloria Serra
- *Authors to whom correspondence should be addressed; E-Mails: (D.D.); (G.S.); Tel.: +598 2 9290290; Fax: +598 2 9241906
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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
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Intermolecular alkyl/aryl exchange of 2-iminothiazoles with isothiocyanates and isocyanates: scopes and limitations. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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PIDA-mediated synthesis of oxazoles through oxidative cycloisomerization of propargylamides. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.02.096] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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