1
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Cheng ZY, Tang Z, Ma ZJ, Wang JH. Two new p-methoxyphenyl-type derivatives from a saline-lake derived Streptomyces sp. XZB32. Nat Prod Res 2024; 38:402-407. [PMID: 36125395 DOI: 10.1080/14786419.2022.2124986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/07/2022] [Indexed: 10/14/2022]
Abstract
Two new p-methoxyphenyl-type derivatives cytchloramol (1) and cytoxazinanone (2), along with six known compounds (3-8) were identified from the chemical investigations of a saline lake actinomycete, Streptomyces sp. XZB32. The structures of the new compounds were elucidated by extensive NMR spectroscopic analysis, HRESIMS data, GIAO (gauge-including atomic orbitals) NMR, specific optical rotation (SOR) and electronic circular dichroism (ECD) calculations. Cytotoxicity evaluation of the two new compounds showed that compound 1 exhibited significant activity against HCT-116 and MDA-MB-231 human cancer cell line with IC50 values of 2.7 ± 0.07 µM and 1.54 ± 0.14 µM, respectively.
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Affiliation(s)
- Zi-Yang Cheng
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, People's Republic of China
| | - Zhen Tang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, People's Republic of China
| | - Zhong-Jun Ma
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, People's Republic of China
| | - Jin-Hui Wang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan, People's Republic of China
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2
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Sarmiento-Vizcaíno A, Martín J, Ortiz-López FJ, Reyes F, García LA, Blanco G. Natural products, including a new caboxamycin, from Streptomyces and other Actinobacteria isolated in Spain from storm clouds transported by Northern winds of Arctic origin. Front Chem 2022; 10:948795. [DOI: 10.3389/fchem.2022.948795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Actinobacteria, mostly Streptomyces species, are the main source of natural products essential in medicine. While the majority of producer microorganisms of secondary metabolite are reported from terrestrial or marine environments, there are limited reports of their isolation from atmospheric precipitations. Clouds are considered as atmospheric oases for microorganisms and there is a recent paradigm shift whereby atmospheric-derived Actinobacteria emerge as an alternative source for drug discovery. In this context, we studied a total of 18 bioactive Actinobacteria strains, isolated by sampling nine precipitation events with prevailing Northern winds in the Cantabrian Sea coast, Northern Spain. Backward trajectories meteorological analyses indicate that air masses were originated mostly in the Arctic Ocean, and their trajectory to downwind areas involved the Atlantic Ocean and also terrestrial sources from continental Europe, and in some events from Canada, Greenland, Mauritania and Canary Islands. Taxonomic identification of the isolates, by 16S rRNA gene sequencing and phylogenetic analyses, revealed that they are members of three Actinobacteria genera. Fifteen of the isolates are Streptomyces species, thus increasing the number of bioactive species of this genus in the atmosphere to a 6.8% of the total currently validated species. In addition, two of the strains belong to the genus Micromonospora and one to genus Nocardiopsis. These findings reinforce a previous atmospheric dispersal model, extended herein to the genus Micromonospora. Production of bioactive secondary metabolites was screened in ethyl acetate extracts of the strains by LC-UV-MS and a total of 94 secondary metabolites were detected after LC/MS dereplication. Comparative analyses with natural products databases allowed the identification of 69 structurally diverse natural products with contrasted biological activities, mostly as antibiotics and antitumor agents, but also anti-inflammatory, antiviral, antiparasitic, immunosuppressant and neuroprotective among others. The molecular formulae of the 25 remaining compounds were determined by HRMS. None of these molecules had been previously reported in natural product databases indicating potentially novel metabolites. As a proof of concept, a new metabolite caboxamycin B (1) was isolated from the culture broth of Streptomyces sp. A-177 and its structure was determined by various spectrometric methods. To the best of our knowledge, this is the first novel natural product obtained from an atmospheric Streptomyces, thus pointing out precipitations as an innovative source for discovering new pharmaceutical natural products.
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3
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Sarmiento-Vizcaíno A, Martín J, Reyes F, García LA, Blanco G. Bioactive Natural Products in Actinobacteria Isolated in Rainwater From Storm Clouds Transported by Western Winds in Spain. Front Microbiol 2021; 12:773095. [PMID: 34858379 PMCID: PMC8631523 DOI: 10.3389/fmicb.2021.773095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
Actinobacteria are the main producers of bioactive natural products essential for human health. Although their diversity in the atmosphere remains largely unexplored, using a multidisciplinary approach, we studied here 27 antibiotic producing Actinobacteria strains, isolated from 13 different precipitation events at three locations in Northern and Southern Spain. Rain samples were collected throughout 2013-2016, from events with prevailing Western winds. NOAA HYSPLIT meteorological analyses were used to estimate the sources and trajectories of the air-mass that caused the rainfall events. Five-day backward air masses trajectories of the diverse events reveals a main oceanic source from the North Atlantic Ocean, and in some events long range transport from the Pacific and the Arctic Oceans; terrestrial sources from continental North America and Western Europe were also estimated. Different strains were isolated depending on the precipitation event and the latitude of the sampling site. Taxonomic identification by 16S rRNA sequencing and phylogenetic analysis revealed these strains to belong to two Actinobacteria genera. Most of the isolates belong to the genus Streptomyces, thus increasing the number of species of this genus isolated from the atmosphere. Furthermore, five strains belonging to the rare Actinobacterial genus Nocardiopsis were isolated in some events. These results reinforce our previous Streptomyces atmospheric dispersion model, which we extend herein to the genus Nocardiopsis. Production of bioactive secondary metabolites was analyzed by LC-UV-MS. Comparative analyses of Streptomyces and Nocardiopsis metabolites with natural product databases led to the identification of multiple, chemically diverse, compounds. Among bioactive natural products identified 55% are antibiotics, both antibacterial and antifungal, and 23% have antitumor or cytotoxic properties; also compounds with antiparasitic, anti-inflammatory, immunosuppressive, antiviral, insecticidal, neuroprotective, anti-arthritic activities were found. Our findings suggest that over time, through samples collected from different precipitation events, and space, in different sampling places, we can have access to a great diversity of Actinobacteria producing an extraordinary reservoir of bioactive natural products, from remote and very distant origins, thus highlighting the atmosphere as a contrasted source for the discovery of novel compounds of relevance in medicine and biotechnology.
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Affiliation(s)
- Aida Sarmiento-Vizcaíno
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Universidad de Oviedo, Oviedo, Spain
| | - Jesús Martín
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Granada, Spain
| | - Fernando Reyes
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Granada, Spain
| | - Luis A García
- Departamento de Ingeniería Química y Tecnología del Medio Ambiente, Área de Ingeniería Química, Universidad de Oviedo, Oviedo, Spain
| | - Gloria Blanco
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Universidad de Oviedo, Oviedo, Spain
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4
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Shibuya M, Orihashi T, Li Y, Yamamoto Y. N-Hydroxyphthalimide-catalyzed chemoselective intermolecular benzylic C-H amination of unprotected arylalkanols. Chem Commun (Camb) 2021; 57:8742-8745. [PMID: 34374398 DOI: 10.1039/d1cc03466a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
N-Hydroxyphthalimide-catalyzed chemoselective benzylic C(sp3)-H amination of unprotected arylalkanols using bis(2,2,2-trichloroethyl)azodicarboxylate has been developed. The use of 1,1,1,3,3,3-hexafluoropropan-2-ol as a solvent plays a critical role in chemoselectivity. The conversion of an aminated product to the corresponding free amino alcohol was also demonstrated.
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Affiliation(s)
- Masatoshi Shibuya
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
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5
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Miranda IL, Dos Santos PHC, Kohlhoff M, Purgato GA, Diaz MAN, Diaz-Muñoz G. Stereoselective synthesis of (-)-cytoxazone and its unnatural congener (+)-5-epi-cytoxazone. Chirality 2021; 33:479-489. [PMID: 34213029 DOI: 10.1002/chir.23334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 05/11/2021] [Accepted: 05/28/2021] [Indexed: 11/09/2022]
Abstract
An interesting protocol for stereoselective synthesis of (-)-cytoxazone and its unnatural stereoisomer (+)-5-epi-cytoxazone from d-4-hydroxyphenylglycine in overall yields of 10% and 16%, respectively, is described. The stereoselective addition of cyanide to an N-Boc protected aminoaldehyde (tert-butyl ((R)-1-(4-methoxyphenyl)-2-oxoethyl)carbamate) (5) constitutes the key step in this approach, producing a mixture of cyanohydrins 6a and b (1,2-anti and 1,2-syn tert-butyl (2-cyano-2-hydroxy-1-(4-methoxyphenyl)ethyl)carbamate) in 89% yield, with reasonable stereoselectivity (1.0:1.8) in favor of the anti-Felkin product (1,2-syn). A one-pot sequence of three successive steps from this mixture produced the oxazolidinone isomers 9a and b ((4R,5R)- and (4R,5S)-4-(4-methoxyphenyl)-2-oxooxazolidine-5-carboxylate). Chromatographic column separation and reduction of the ester function of both precursors led to (-)-cytoxazone and (+)-5-epi-cytoxazone.
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Affiliation(s)
- Izabel Luzia Miranda
- Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Markus Kohlhoff
- Chemistry of Bioactive Natural Products, René Rachou Institute, Oswaldo Cruz Foundation (Fiocruz), Belo Horizonte, Minas Gerais, Brazil
| | - Gislaine Aparecida Purgato
- Department of Biochemistry and Molecular Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Marisa Alves Nogueira Diaz
- Department of Biochemistry and Molecular Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Gaspar Diaz-Muñoz
- Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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6
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Matsushima Y, Orita M. Concise synthesis of the Taxol side chain and demethoxy-4-epi-cytoxazone via oxazoline formation through intramolecular benzylic substitution of a bis-trichloroacetimidate. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Choi H, Jang H, Choi J, Lee K. Stereoselective Synthesis of Oxazolidin-2-Ones via an Asymmetric Aldol/Curtius Reaction: Concise Total Synthesis of (-)-Cytoxazone. Molecules 2021; 26:molecules26030597. [PMID: 33498713 PMCID: PMC7865922 DOI: 10.3390/molecules26030597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 11/23/2022] Open
Abstract
Herein, we are reporting an efficient approach toward the synthesis of 4,5-disubstituted oxazolidin-2-one scaffolds. The developed approach is based on a combination of an asymmetric aldol and a modified Curtius protocol, which uses an effective intramolecular ring closure to rapidly access a range of oxazolidin-2-one building blocks. This strategy also permits a straightforward and concise asymmetric total synthesis of (−)-cytoxazone. Consisting of three steps, this is one of the shortest syntheses reported to date. Ultimately, this convenient platform would provide a promising method for the early phases of drug discovery.
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Affiliation(s)
| | | | | | - Kiyoun Lee
- Correspondence: ; Tel.: +82-2-2164-5528; Fax: +82-2-2164-4764
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8
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Wang F, Tan X, Wu T, Zheng LS, Chen GQ, Zhang X. Ni-Catalyzed asymmetric reduction of α-keto-β-lactams via DKR enabled by proton shuttling. Chem Commun (Camb) 2020; 56:15557-15560. [PMID: 33244528 DOI: 10.1039/d0cc05599a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chiral α-hydroxy-β-lactams are key fragments of many bioactive compounds and antibiotics, and the development of efficient synthetic methods for these compounds is of great value. The highly enantioselective dynamic kinetic resolution (DKR) of α-keto-β-lactams was realized via a novel proton shuttling strategy. A wide range of α-keto-β-lactams were reduced efficiently and enantioselectively by Ni-catalyzed asymmetric hydrogenation, providing the corresponding α-hydroxy-β-lactam derivatives with high yields and enantioselectivities (up to 92% yield, up to 94% ee). Deuterium-labelling experiments indicate that phenylphosphinic acid plays a pivotal role in the DKR of α-keto-β-lactams by promoting the enolization process. The synthetic potential of this protocol was demonstrated by its application in the synthesis of a key intermediate of Taxol and (+)-epi-Cytoxazone.
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Affiliation(s)
- Fangyuan Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
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9
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Deng X, Zhang L, Liu H, Bai Y, He W. mCPBA-mediated dioxygenation of unactivated alkenes for the synthesis of 5-imino-2-tetrahydrofuranyl methanol derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152620] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Liu Y, Yi Z, Yang X, Wang H, Yin C, Wang M, Dong XQ, Zhang X. Efficient Access to Chiral 2-Oxazolidinones via Ni-Catalyzed Asymmetric Hydrogenation: Scope Study, Mechanistic Explanation, and Origin of Enantioselectivity. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02569] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yuanhua Liu
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Zhiyuan Yi
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xuanliang Yang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Heng Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
| | - Congcong Yin
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
| | - Xiu-Qin Dong
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xumu Zhang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
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11
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Matador E, de Gracia Retamosa M, Monge D, Fernández R, Lassaletta JM. Formaldehyde tert-butyl hydrazone as a formyl anion equivalent: asymmetric addition to carbonyl compounds. Chem Commun (Camb) 2020; 56:9256-9267. [PMID: 32626864 DOI: 10.1039/d0cc02660c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric 1,2-addition of formyl anion equivalents to carbonyl compounds is a powerful synthetic tool that ideally provide access to highly functionalizable α-hydroxy aldehydes in an enantioselective fashion. In this context, the nucleophilic character of formaldehyde hydrazones, together with their remarkable stability as monomeric species, has been exploited for the functionalization of diverse carbonyl compounds, using initially auxiliary-based methodologies and, more recently, catalytic enantioselective versions. This feature article highlights our research progress employing formaldehyde tert-butyl hydrazone as a versatile formyl anion equivalent, in combination with bifunctional H-bonding organocatalysis. The design and optimization of different catalytic systems, focusing on a dual activation of both reagents, is reviewed, as well as the racemization free unmasking of the formyl group and representative product transformations for the construction of valuable, densely functionalyzed chiral building blocks.
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Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain.
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12
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Nanjo T, Zhang X, Tokuhiro Y, Takemoto Y. Divergent and Scalable Synthesis of α-Hydroxy/Keto-β-amino Acid Analogues by the Catalytic Enantioselective Addition of Glyoxylate Cyanohydrin to Imines. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03394] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Takeshi Nanjo
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Xuan Zhang
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yusuke Tokuhiro
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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13
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Matador E, de Gracia Retamosa M, Monge D, Iglesias-Sigüenza J, Fernández R, Lassaletta JM. Bifunctional Squaramide Organocatalysts for the Asymmetric Addition of Formaldehyde tert-Butylhydrazone to Simple Aldehydes. Chemistry 2018; 24:6854-6860. [PMID: 29570872 DOI: 10.1002/chem.201801052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 01/08/2023]
Abstract
The nucleophilic addition of formaldehyde tert-butylhydrazone to simple aldehydes (a formal hetero-carbonyl-ene reaction) can be performed with good reactivity and excellent enantioselectivity by virtue of the dual hydrogen-bonding activation exerted by amide-squaramide organocatalysts. The resulting hydroxydiazenes (azo alcohols) were isolated in high yields as enantiomerically enriched azoxy compounds after a regioselective azo-to-azoxy transformation. Subsequent derivatization provides an entry to relevant amino alcohols, oxazolidinones, and derivatives thereof.
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Affiliation(s)
- Esteban Matador
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - María de Gracia Retamosa
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092, Seville, Spain)
| | - David Monge
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012, Seville, Spain
| | - José M Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092, Seville, Spain)
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14
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Heravi MM, Lashaki TB, Fattahi B, Zadsirjan V. Application of asymmetric Sharpless aminohydroxylation in total synthesis of natural products and some synthetic complex bio-active molecules. RSC Adv 2018; 8:6634-6659. [PMID: 35559209 PMCID: PMC9092437 DOI: 10.1039/c7ra12625e] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/30/2018] [Indexed: 01/23/2023] Open
Abstract
This report illustrates the applications of Asymmetric Sharpless Aminohydroxylation (ASAH) in the stereoselective synthesis of vicinal amino alcohols as important intermediates in the total synthesis of complex molecules and natural products with significant biological activities. The ASHA allows the regio- syn-selective synthesis of 1,2-amino alcohols via reaction of alkenes with salts of N-halosulfonamides, -amides and -carbamates employing osmium tetroxide (OsO4) as an efficient catalyst. In this reaction, chirality is induced via the addition of dihydroquinine- and dihydroquinidine as derived chiral ligands.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
| | | | - Bahareh Fattahi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran
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15
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Gupta P, Mahajan N. Biocatalytic approaches towards the stereoselective synthesis of vicinal amino alcohols. NEW J CHEM 2018. [DOI: 10.1039/c8nj00485d] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The global need for clean manufacturing technologies and the management of hazardous chemicals and waste present new research challenges to both chemistry and biotechnology.
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Affiliation(s)
- Pankaj Gupta
- Department of Chemistry
- Govt. Degree College Kathua
- University of Jammu
- Higher Education Department
- India
| | - Neha Mahajan
- Department of Biotechnology
- Govt. Degree College Kathua
- University of Jammu
- Higher Education Department
- India
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16
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Dai X, Weng G, Yu S, Chen H, Zhang J, Cheng S, Xu X, Yuan W, Wang Z, Zhang X. One-pot diastereo- and enantioselective hydrosilylation–transacylation of α-acyloxy β-enamino esters. Org Chem Front 2018. [DOI: 10.1039/c8qo00602d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric hydrosilylation–transacylation of α-acyloxy β-enamino esters provided various α-hydroxyl-β-acylamido esters in good yields with good diastereoselectivities and enantioselectivities.
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Affiliation(s)
- Xingjie Dai
- Xihua University
- China
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
| | | | - Shuowen Yu
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Hui Chen
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Jiayan Zhang
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Shaobing Cheng
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xiaoying Xu
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Weicheng Yuan
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | | | - Xiaomei Zhang
- Xihua University
- China
- Key Laboratory for Asymmetric Synthesis and Chiral Technology of Sichuan Province
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
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17
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Reddy LR, Kotturi S, Waman Y, Patel C, Patwa A, Shenoy R. Diastereoselective addition of anisoles to N-tert-butanesulfinyl imines via four-membered lithium cycles. Chem Commun (Camb) 2018; 54:7007-7009. [DOI: 10.1039/c8cc03764g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly regio- and diastereo-selective ortho-lithiation/addition of anisoles to N-tert-butanesulfinyl imines resulting in the selective formation of chiral α-branched amines is described.
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Affiliation(s)
| | | | - Yogesh Waman
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Chirag Patel
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Aditya Patwa
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Rajesh Shenoy
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
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18
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Short synthesis of epi-cytoxazone via oxazoline formation through intramolecular benzylic substitution of a bis-trichloroacetimidate. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.11.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Mallik S, Bhajammanavar V, Ramakrishna I, Baidya M. Cross-Aldol Reaction of Activated Carbonyls with Nitrosocarbonyl Intermediates: Stereoselective Synthesis toward α-Hydroxy-β-amino Esters and Amides. Org Lett 2017; 19:3843-3846. [PMID: 28700246 DOI: 10.1021/acs.orglett.7b01721] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A practical and flexible strategy toward α-hydroxy-β-amino esters and amides, which are important biological motifs, based on an organocatalytic cross-aldol reaction of in situ-generated nitrosocarbonyl intermediates followed by hydrogenation is presented. The protocol features operational simplicity, high yields, a wide substrate scope, and high regio- and diastereoselectivity profiles. The utility of this method was showcased through the synthesis of bestatin analogues and indole formation.
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Affiliation(s)
- Sumitava Mallik
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600 036, Tamil Nadu, India
| | - Vinod Bhajammanavar
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600 036, Tamil Nadu, India
| | - Isai Ramakrishna
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600 036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600 036, Tamil Nadu, India
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20
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Ghrab S, Aroua L, Beji M. One-pot Three Component Synthesis of ω-(oxathiolan-2-thion-5-yl)-α-oxazolidin-2-ones. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Saad Ghrab
- Laboratory of Structural Organic Chemistry, Department of Chemistry, Faculty of Sciences of Tunis; Tunis El-Manar University; El Manar I 2092 Tunis Tunisia
| | - Lotfi Aroua
- Laboratory of Structural Organic Chemistry, Department of Chemistry, Faculty of Sciences of Tunis; Tunis El-Manar University; El Manar I 2092 Tunis Tunisia
- Department of Chemistry; College of Sciences, Qassim University; Buraida Qassim Saudi Arabia
| | - Mohamed Beji
- Laboratory of Structural Organic Chemistry, Department of Chemistry, Faculty of Sciences of Tunis; Tunis El-Manar University; El Manar I 2092 Tunis Tunisia
- Preparatory Institute for Engineering Studies of Tunis; Tunis University, Montfleury; Tunis Tunisia
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21
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DDQ mediated stereoselective intermolecular benzylic CN bond formation: Synthesis of (−)-cytoxazone, (−)-4-epi-cytoxazone and their analogues and immunological evaluation of their cytokine modulating activity. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Sugimoto H, Itoh S. Oxidative Transformation of Alkenes Catalyzed by Bioinspired Osmium Complexes. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.929] [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)
- Hideki Sugimoto
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University
| | - Shinobu Itoh
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University
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23
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Synthesis Approaches to (-)-Cytoxazone, a Novel Cytokine Modulator, and Related Structures. Molecules 2016; 21:molecules21091176. [PMID: 27608004 PMCID: PMC6274428 DOI: 10.3390/molecules21091176] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 08/22/2016] [Accepted: 08/30/2016] [Indexed: 11/16/2022] Open
Abstract
(−)-Cytoxazone, originally isolated from cultures of a Streptomyces species has an oxazolidin-2-one 4,5-disubstituted ring. It is known that this natural product presents a cytokine modulator effect through the signaling pathway of Th2 cells (type 2 cytokines), which are involved in the process of growth and differentiation of cells. From this, the interest in the development of research aimed at the total synthesis of this molecule and its analogs has remained high, which can be confirmed by the large number of publications on the topic, more than 30 to date. This review focuses on the various creative methods for the synthesis of (−)-cytoxazone and its congeners. The assessment of the preparation of this oxazolidinone and related structures serves as a treatise on the efforts made in the synthesis of this important class of compound from its first total synthesis in 1999.
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24
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Sugimoto H, Mikami A, Kai K, Sajith PK, Shiota Y, Yoshizawa K, Asano K, Suzuki T, Itoh S. cis-1,2-Aminohydroxylation of Alkenes Involving a Catalytic Cycle of Osmium(III) and Osmium(V) Centers: OsV(O)(NHTs) Active Oxidant with a Macrocyclic Tetradentate Ligand. Inorg Chem 2015; 54:7073-82. [DOI: 10.1021/acs.inorgchem.5b01083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hideki Sugimoto
- Department
of Material and Life Science, Division of Advanced Science and Biotechnology,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akine Mikami
- Department
of Material and Life Science, Division of Advanced Science and Biotechnology,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kenichiro Kai
- Department
of Material and Life Science, Division of Advanced Science and Biotechnology,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - P. K. Sajith
- Institute for Materials Chemistry and Engineering and
International Research Center for Molecular System, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering and
International Research Center for Molecular System, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and
International Research Center for Molecular System, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Elements Strategy Initiative for Catalysts & Batteries, Kyoto University, Nishi-ku, Kyoto 615-8520, Japan
| | - Kaori Asano
- Comprehensive Analysis Center, The Institute of Scientific
and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0057, Japan
| | - Takeyuki Suzuki
- Comprehensive Analysis Center, The Institute of Scientific
and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0057, Japan
| | - Shinobu Itoh
- Department
of Material and Life Science, Division of Advanced Science and Biotechnology,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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25
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Organocatalyzed asymmetric synthesis and absolute configuration assignment of enantioenriched α-benzylaminocoumarins. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.138] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Dong HQ, Xu MH, Feng CG, Sun XW, Lin GQ. Recent applications of chiral N-tert-butanesulfinyl imines, chiral diene ligands and chiral sulfur–olefin ligands in asymmetric synthesis. Org Chem Front 2015. [DOI: 10.1039/c4qo00245h] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The highly efficient asymmetric reactions of chiral sulfinyl auxiliary, diene ligands and sulfur–olefin ligands are presented.
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Affiliation(s)
- Han-Qing Dong
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Ming-Hua Xu
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Chen-Guo Feng
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xing-Wen Sun
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Guo-Qiang Lin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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27
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Wang Q, Huang W, Yuan H, Cai Q, Chen L, Lv H, Zhang X. Rhodium-Catalyzed Enantioselective Hydrogenation of Tetrasubstituted α-Acetoxy β-Enamido Esters: A New Approach to Chiral α-Hydroxyl-β-amino Acid Derivatives. J Am Chem Soc 2014; 136:16120-3. [DOI: 10.1021/ja509005e] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Qingli Wang
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Wenhua Huang
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Haoquan Yuan
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Qin Cai
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Liming Chen
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Hui Lv
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Xumu Zhang
- College of Chemistry and
Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
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28
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Yadav GD, Pawar SV. Novelty of immobilized enzymatic synthesis of 3-ethyl-1,3-oxazolidin-2-one using 2-aminoalcohol and dimethyl carbonate: Mechanism and kinetic modeling of consecutive reactions. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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29
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Sakamoto S, Kazumi N, Kobayashi Y, Tsukano C, Takemoto Y. Asymmetric Synthesis of Trisubstituted Oxazolidinones by the Thiourea-Catalyzed Aldol Reaction of 2-Isocyanatomalonate Diester. Org Lett 2014; 16:4758-61. [DOI: 10.1021/ol502198e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shota Sakamoto
- Graduate
School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Naoya Kazumi
- Graduate
School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yusuke Kobayashi
- Graduate
School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Chihiro Tsukano
- Graduate
School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshiji Takemoto
- Graduate
School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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30
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Perry JA, Koteva K, Verschoor CP, Wang W, Bowdish DME, Wright GD. A macrophage-stimulating compound from a screen of microbial natural products. J Antibiot (Tokyo) 2014; 68:40-6. [DOI: 10.1038/ja.2014.83] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 05/20/2014] [Accepted: 05/28/2014] [Indexed: 12/21/2022]
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31
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Asano M, Nagasawa C, Suzuki M, Nishiyama S, Sugai T. Short-Step and Scalable Synthesis of (±)-Cytoxazone. Biosci Biotechnol Biochem 2014; 69:145-8. [PMID: 15665479 DOI: 10.1271/bbb.69.145] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A five-step and scalable synthesis of racemic cytoxazone, a novel cytokine modulator, was accomplished in a total yield of 51% from p-methoxycinnamyl alcohol without any protective groups. The keystep was the new one-pot azidohydroxylation procedure by the combined use of NaN3-H2O2-CH3CN. The epoxidation of an olefin by means of an in situ-formed iminohydroperoxide worked well, accompanied by the concomitant regioselective ring opening reaction of the resulting highly reactive epoxide with an azide ion.
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32
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Wu H, Haeffner F, Hoveyda AH. An efficient, practical, and enantioselective method for synthesis of homoallenylamides catalyzed by an aminoalcohol-derived, boron-based catalyst. J Am Chem Soc 2014; 136:3780-3. [PMID: 24588835 PMCID: PMC3985786 DOI: 10.1021/ja500374p] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A practical catalytic
method for enantioselective addition
of an allene unit to aldimines is disclosed. Transformations are promoted
by an in-situ-generated B-based catalyst that is derived from a simple,
robust, and readily accessible (in multigram quantities) chiral aminoalcohol.
A range of aryl-, heteroaryl-, and alkyl-substituted homoallenylamides
can be obtained in 66–91% yield and 84:16 to >99:1 enantiomeric
ratio through reactions performed at ambient temperature and in the
presence of 0.1–3.0 mol% of the chiral catalyst and a commercially
available allenylboron reagent. The catalytic protocol does not require
strict anhydrous conditions, can be performed on gram scale, and promotes
highly selective addition of an allenyl unit (vs a propargyl group).
The utility of the approach is demonstrated through development of
succinct approaches to syntheses of anisomycin and epi-cytoxazone.
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Affiliation(s)
- Hao Wu
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
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33
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Kumar B, Aga MA, Rouf A, Shah BA, Taneja SC. Common precursor strategy for the synthesis of bestatin, amprenavir intermediate and syn-4-hydroxy-5-phenyl-γ-lactam. RSC Adv 2014. [DOI: 10.1039/c4ra00205a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A synthetic strategy using α,β-unsaturated ester as a common precursor for the preparation of bestatin hydrochloride, an anticancer agent; 1,3-diaminoalcohol, an amprenavir intermediate andsyn-4-hydroxy-5-phenyl-γ-lactam, an intermediate of bioactive molecules with good yields and excellent stereoselectivity is described.
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Affiliation(s)
- Brijesh Kumar
- Bio-organic Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
- Jammu, India-180001
| | - Mushtaq A. Aga
- Bio-organic Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
- Jammu, India-180001
| | - Abdul Rouf
- Bio-organic Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
- Jammu, India-180001
| | - Bhahwal A. Shah
- Natural Product Microbe
- Indian Institute of Integrative Medicine (CSIR)
- Jammu, India-180001
| | - Subhash C. Taneja
- Bio-organic Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
- Jammu, India-180001
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34
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Duan A, Peng L, Peng D, Gu FL. Theoretical study on the mechanism of stereoselective synthesis of oxazolidinones. J Org Chem 2013; 78:12585-92. [PMID: 24237588 DOI: 10.1021/jo4022452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oxazolidinones can be synthesized through an organocatalytic cascade reaction of stable sulfur ylides and nitro-olefins. This process, sequentially catalyzed by thiourea and N,N-dimethylaminopyridine (DMAP), is theoretically studied using density functional theory by the continuum solvation model. It is shown that the rate- and stereoselectivity-determining step is the addition reaction of sulfur ylide to the nitro-olefin with two competing reaction channels. One channel is where the nitro-cyclopropane is generated first and then converted into isoxazoline N-oxide through a DMAP-catalyzed rearrangement. The other channel is the direct generation of the isoxazoline N-oxide intermediate. DMAP plays an important role in the reaction as a nucleophilic catalyst. The mechanism for the important rearrangement reaction proposed by Xiao et al. (J. Am. Chem. Soc. 2008, 130, 6946-6948) is not appropriate as the reaction energy barrier is too high; a 10-step mechanism determined by our theoretical calculations is more feasible as the energy barrier is becoming much less than that by Xiao. It is the first time that the Hofmann rearrangement involved in the cascade organocatalysis is confirmed by theoretical calculations. Our result of the stereoselectivity for the synthesis of oxazolidinones is in good agreement with the experiment.
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Affiliation(s)
- Abing Duan
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment, South China Normal University , Guangzhou 510006, China
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35
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An Efficient Approach to the Synthesis of Novel Oxazolidinones as Potential Antimicrobial Agents. J CHEM-NY 2013. [DOI: 10.1155/2013/252187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Oxazolidinone, either mononuclear or condensed with other heterocyclics, has established its importance in medicinal chemistry. A variety of biological activities have been reported by oxazolidinone derivatives. The present work describes the synthesis of several oxazolidinone derivatives, 3-(2-(7-chloroquinoline-4-ylamino)ethyl)-2-imino-5-(4-chloro/nitro/methoxy benzylidene)oxazolidin-4-one 4(a–c) and 4-(2-(7-chloroquinolin-4-ylamino)ethyl)-2(4-chloro/nitro/methoxy-benzylidene)-1,6-diox-4,9-di-azaspiro[4,4]nonane-3,8-dione 5(a–c). Synthesized compounds (1, 3, 4a, 5a, and 5c) were screened against bacterial strains such asS. aureus(MTCC 96) andE. coli(MTCC119) and fungal strainsA. niger(MTCC 1344) andC. albicans(MTCC 871) compared with penicillin for bacteria and fluconazole for fungi as reference drugs by disk diffusion method. All synthesized compounds were identified by the means of IR, NMR, and MS.
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36
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Babu KC, Reddy RN, Rao SY, Venkateshwarlu P, Madhusudhan G. New, Efficient, and High-Yielding Asymmetric Synthesis of (4S,5S)-Cytoxazone. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2011.563450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Chiummiento L, Funicello M, Tramutola F. Stereoselective intramolecular cyclization to 4-(hydroxymethyl)-3-(1H-indolyl)oxazolidin-2-ones. Chirality 2012; 24:345-8. [DOI: 10.1002/chir.22003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Accepted: 12/15/2011] [Indexed: 11/08/2022]
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38
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Reddy LR, Gupta AP, Villhauer E, Liu Y. Rhodium-catalyzed asymmetric arylation of N-(tert-butanesulfinyl)imines with sodium tetraarylborates. J Org Chem 2012; 77:1095-100. [PMID: 22185461 DOI: 10.1021/jo2024224] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A diastereoselective rhodium-catalyzed arylation of N-(tert-butanesulfinyl)imines with sodium tetraarylborates is described. This method is general for constructing various chiral α-branched amines and 2-substituted pyrrolidines with high diastereoselectivity. A practical asymmetric approach to access chiral amines has been developed involving the use of air-stable Rh catalysts and reagents and in the absence of an external ligand.
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Affiliation(s)
- Leleti Rajender Reddy
- Chemical and Analytical Development, Novartis Pharmaceuticals Corporation, East Hanover, New Jersey 07936, USA.
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39
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Waser M. Enamine Catalysis. ASYMMETRIC ORGANOCATALYSIS IN NATURAL PRODUCT SYNTHESES 2012:7-44. [DOI: 10.1007/978-3-7091-1163-5_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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40
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Cui Z, Yu HJ, Yang RF, Gao WY, Feng CG, Lin GQ. Highly Enantioselective Arylation of N-Tosylalkylaldimines Catalyzed by Rhodium-Diene Complexes. J Am Chem Soc 2011; 133:12394-7. [DOI: 10.1021/ja2046217] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhe Cui
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
- College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, P.R. China
| | - Hong-Jie Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Rui-Feng Yang
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Wen-Yun Gao
- College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, P.R. China
| | - Chen-Guo Feng
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Guo-Qiang Lin
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
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41
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Detz RJ, Abiri Z, le Griel R, Hiemstra H, van Maarseveen JH. Enantioselective Copper-Catalysed Propargylic Substitution: Synthetic Scope Study and Application in Formal Total Syntheses of (+)-Anisomycin and (−)-Cytoxazone. Chemistry 2011; 17:5921-30. [DOI: 10.1002/chem.201003727] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Indexed: 11/09/2022]
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42
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Synoxazolidinone C; a bicyclic member of the synoxazolidinone family with antibacterial and anticancer activities. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.027] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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43
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Colpaert F, Mangelinckx S, De Brabandere S, De Kimpe N. Asymmetric Synthesis of α-Chloro-β-amino-N-sulfinyl Imidates as Chiral Building Blocks. J Org Chem 2011; 76:2204-13. [DOI: 10.1021/jo200082w] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Filip Colpaert
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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44
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45
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Donohoe TJ, Callens CKA, Flores A, Lacy AR, Rathi AH. Recent Developments in Methodology for the Direct Oxyamination of Olefins. Chemistry 2010; 17:58-76. [DOI: 10.1002/chem.201002323] [Citation(s) in RCA: 220] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Asymmetric synthesis of (4S,5S)-2-oxo-4-phenyloxazolidine-5-carboxylic acid using a 1,2-addition of PhMgBr to an N-sulfinimine derived from (R)-glyceraldehyde acetonide and (S)-t-BSA. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Robak MT, Herbage MA, Ellman JA. Synthesis and applications of tert-butanesulfinamide. Chem Rev 2010; 110:3600-740. [PMID: 20420386 DOI: 10.1021/cr900382t] [Citation(s) in RCA: 881] [Impact Index Per Article: 62.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- MaryAnn T Robak
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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Reddy RS, Chouthaiwale PV, Suryavanshi G, Chavan VB, Sudalai A. Co(iii)(salen)-catalyzed HKR of two stereocentered alkoxy- and azido epoxides: a concise enantioselective synthesis of (S,S)-reboxetine and (+)-epi-cytoxazone. Chem Commun (Camb) 2010; 46:5012-4. [DOI: 10.1039/c0cc00650e] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu M, Sun XW, Xu MH, Lin GQ. Highly Efficient Asymmetric Synthesis of Vinylic Amino Alcohols by Zn-Promoted Benzoyloxyallylation of ChiralN-tert-Butanesulfinyl Imines: Facile and Rapid Access to (−)-Cytoxazone. Chemistry 2009; 15:10217-24. [DOI: 10.1002/chem.200900801] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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