1
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Hwang HJ, Ciufolini MA. Therapies from Thiopeptides. Molecules 2023; 28:7579. [PMID: 38005301 PMCID: PMC10673184 DOI: 10.3390/molecules28227579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
The first part of this contribution describes solutions that were developed to achieve progressively more efficient syntheses of the thiopeptide natural products, micrococcins P1 and P2 (MP1-MP2), with an eye toward exploring their potential as a source of new antibiotics. Such efforts enabled investigations on the medicinal chemistry of those antibiotics, and inspired the development of the kinase inhibitor, Masitinib®, two candidate oncology drugs, and new antibacterial agents. The studies that produced such therapeutic resources are detailed in the second part. True to the theme of this issue, "Organic Synthesis and Medicinal Chemistry: Two Inseparable Partners", an important message is that the above advances would have never materialized without the support of curiosity-driven, academic synthetic organic chemistry: a beleaguered science that nonetheless has been-and continues to be-instrumental to progress in the biomedical field.
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Affiliation(s)
- Hee-Jong Hwang
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada;
- A&J Science, Ltd., 80 Chumbok Ro, Dong Gu, Daegu 41061, Republic of Korea
| | - Marco A. Ciufolini
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada;
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2
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Kumar D, Sharma H, Saha N, Chakraborti AK. Domino synthesis of functionalized pyridine carboxylates under gallium catalysis: Unravelling the reaction pathway and the role of the nitrogen source counter anion. Chem Asian J 2022; 17:e202200304. [PMID: 35608137 DOI: 10.1002/asia.202200304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/11/2022] [Indexed: 11/10/2022]
Abstract
The catalytic potential of various metal Lewis acid catalysts have been assessed to derive a high-yielding, multi-component domino synthesis of functionalized pyridines from (E)-3-(dimethylamino)-1-aryl/heteroaryl-prop-2-en-1-ones, 1,3-dicarbonyl compounds, and an ammonium salt (as the nitrogen precursor). Amongst the various metal halides, tetrafluoroborates, perchlorates, and triflates used as the catalyst GaI3 proved to be the most effective. The mechanistic course of the most plausible pathway has been outlined as the intermediate formation of imine/enamine by the reaction of the 1,3-dicarbonyl compound with ammonia (liberated in situ from the ammonium salt used as the nitrogen source), which participates in the domino nucleophilic Michael reaction to the (2E)-3-(dimethylamino)-1-aryl/hetroarylprop-2-en-1-one by its active methylene carbon through its enamine form followed by intramolecular cyclization and aromatization. The effect of different ammonium salts as the nitrogen source has been investigated and NH4OAc was found to be best. The influence of the acetate counter anion of NH4OAc on the progress of the reaction was studied and its specific role in the cyclization and subsequent aromatization has been revealed. This work offers distinct advantages compared to the literature reported methodologies on the count of several green index parameters.
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Affiliation(s)
- Dinesh Kumar
- National Institute of Pharmaceutical Education and Research, Medicinal Chemistry, Sector 67, 160062, S. A. S. Nagar, INDIA
| | - Himanshu Sharma
- National Institute of Pharmaceutical Education and Research, Medicinal Chemistry, Sector 67, 160062, S. A. S. Nagar, INDIA
| | - Nirjhar Saha
- National Institute of Pharmaceutical Education and Research, Medicinal Chemistry, Sector 67, 160062, S. A. S. Nagar, INDIA
| | - Asit Kumar Chakraborti
- National Institute of Pharmaceutical Education and Research, Medicinal Chemistry, Sector 67, 160062, S. A. S. Nagar, INDIA
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3
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Wu X, Li W. The Applications of
β
‐Keto
Amides for Heterocycle Synthesis. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoqiang Wu
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai P. R. China
| | - Wanfang Li
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai P. R. China
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4
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Wang J, Ba D, Yang M, Cheng G, Wang L. Regioselective Synthesis of 2,4-Diaryl-6-trifluoromethylated Pyridines through Copper-Catalyzed Cyclization of CF 3-Ynones and Vinyl Azides. J Org Chem 2021; 86:6423-6432. [PMID: 33905254 DOI: 10.1021/acs.joc.1c00275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel copper-catalyzed cyclization of readily available vinyl azides with CF3-ynones is steadily achieved under mild conditions to furnish the versatile 2,4-diaryl-6-trifluoromethylated pyridine products, which are of great interest in medicinal chemistry. The generation of the vinyl iminophosphorane intermediates from vinyl azides through the Staudinger-Meyer reaction ensures the subsequent 1,4-addition process with CF3-ynones in this transformation.
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Affiliation(s)
- Jixin Wang
- School of Medicine, Huaqiao University, Quanzhou 362021, P.R. China
| | - Da Ba
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P.R. China
| | - Mengqi Yang
- School of Medicine, Huaqiao University, Quanzhou 362021, P.R. China
| | - Guolin Cheng
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P.R. China
| | - Lianhui Wang
- School of Medicine, Huaqiao University, Quanzhou 362021, P.R. China
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5
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Shabalin DA, Dvorko MY, Schmidt EY, Trofimov BA. Regiocontrolled synthesis of 2,4,6-triarylpyridines from methyl ketones, electron-deficient acetylenes and ammonium acetate. Org Biomol Chem 2021; 19:2703-2715. [PMID: 33667288 DOI: 10.1039/d1ob00193k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel one-pot two-step approach for the synthesis of 2,4,6-triarylpyridines via t-BuOK/DMSO-promoted C-vinylation of a variety of methyl ketones with electron-deficient acetylenes (alkynones) followed by a cyclization of the in situ generated unsaturated 1,5-dicarbonyl species with ammonium acetate has been developed. This approach possesses competitive advantages such as high regioselectivity, available starting materials and the absence of transition-metal catalysts, oxidants and undesirable byproducts. A wide synthetic utility of the developed approach was demonstrated by the synthesis of trisubstituted, tetrasubstituted and fused pyridines.
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Affiliation(s)
- Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation.
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6
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Yang T, Deng Z, Wang KH, Li P, Huang D, Su Y, Hu Y. Synthesis of Polysubstituted Trifluoromethylpyridines from Trifluoromethyl-α,β -ynones. J Org Chem 2019; 85:924-933. [PMID: 31833770 DOI: 10.1021/acs.joc.9b02873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel and efficient method for synthesis of polysubstituted trifluoromethylpyridine derivatives by the Bohlmann-Rahtz heteroannulation reaction is described, which use trifluoromethyl-α,β-ynones as trifluoromethyl building blocks to react with β-enamino esters or β-enamino ketones in the presence of ZnBr2 to form the trifluoromethylpyridine derivatives in good yields. The protocol has the advantages of readily available starting materials, mild reaction conditions, and high atom economy.
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Affiliation(s)
- Tianyu Yang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Zhoubin Deng
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Pengfei Li
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering , Northwest Normal University , 967 Anning East Road , Lanzhou 730070 , P. R. China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P. R. China
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7
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Hamza EK, Hamdy NA, Zarie ES, Fakhr IM, Elwahy AH, Awad HM. Synthesis and in vitro evaluation of novel tetralin‐pyrazolo[3,4‐
b
]pyridine hybrids as potential anticancer agents. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3764] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Eman Kh. Hamza
- Applied Organic Chemistry DepartmentNational Research Centre Giza Egypt
| | - Nehal A. Hamdy
- Applied Organic Chemistry DepartmentNational Research Centre Giza Egypt
| | - Eman S. Zarie
- Pharmaceutical and Drug Industries Research Division, Therapeutic Chemistry DepartmentNational Research Centre Giza Egypt
| | - Issa M.I. Fakhr
- Applied Organic Chemistry DepartmentNational Research Centre Giza Egypt
| | - Ahmed H.M. Elwahy
- Department of Chemistry, Faculty of ScienceCairo University Giza Egypt
| | - Hanem M. Awad
- Department of Tanning Materials and Leather TechnologyNational Research Centre Cairo Egypt
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8
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Guin S, Gupta R, Majee D, Samanta S. DABCO- and DBU-promoted one-pot reaction of N-sulfonyl ketimines with Morita-Baylis-Hillman carbonates: a sequential approach to (2-hydroxyaryl)nicotinate derivatives. Beilstein J Org Chem 2018; 14:2771-2778. [PMID: 30498526 PMCID: PMC6244423 DOI: 10.3762/bjoc.14.254] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/16/2018] [Indexed: 12/25/2022] Open
Abstract
An intriguing DABCO-catalyzed and DBU-promoted one-pot synthesis of an important class of (2-hydroxyaryl)pyridine derivatives bearing a carboxylate or a nitrile group suitably placed at C3 position of the aza-ring has been achieved in acceptable chemical yields with a broad functional group tolerance. This sequential C-C/C-N bond making process proceeds through a regioselective allylic alkylation/aza-Michael reaction between MBH carbonates derived from an acrylate/acrylonitrile and N-sulfonyl ketimines as C,N-binucleophiles catalyzed by DABCO, followed by elimination of SO2 under the influence of base and subsequent aromatization in an open atmosphere.
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Affiliation(s)
- Soumitra Guin
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Raman Gupta
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Debashis Majee
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Sampak Samanta
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
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9
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Gouda MA, Berghot MA, Abd El-Ghani GE, Khalil AEGM. Synthesis of Some Novel 4-(Furan-2-yl)-5,6-dimethylpyridines. J Heterocycl Chem 2018; 55:1935-1941. [DOI: 10.1002/jhet.3231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Moustafa A. Gouda
- Department of Chemistry; Faculty of Science and Arts, Taibah University; Ulla Saudi Arabia
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
| | - Moged A. Berghot
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
| | - Ghada E. Abd El-Ghani
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
| | - Abd El-Galil M. Khalil
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
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10
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Gracia-Vitoria J, Osante I, Cativiela C, Merino P, Tejero T. Self-Regeneration of Chirality with l-Cysteine through 1,3-Dipolar Cycloadditions between Diazoalkanes and Enantiomerically Pure Thiazolines: Experimental and Computational Studies. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00312] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- J. Gracia-Vitoria
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - I. Osante
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - C. Cativiela
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - P. Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Zaragoza 50009, Spain
| | - T. Tejero
- Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
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11
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Liu Y, He P, Zhang Y, Zhang X, Liu J, Du Y. One-Pot Enantiomeric Synthesis of Thiazole-Containing Amino Acids: Total Synthesis of Venturamides A and B. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00244] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi Liu
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Peng He
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Zhang
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangyu Zhang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Jun Liu
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Chemoselective Suzuki Coupling of Bromoarenes Catalysed by Palladium(II)-Complexing Macrocycles in Aqueous Media. ChemistrySelect 2018. [DOI: 10.1002/slct.201703073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Methyl N-[1-(Benzoylamino)-2-methoxy-2-oxoethyl]-tryptophanate. MOLBANK 2017. [DOI: 10.3390/m958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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14
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Gore BS, Senadi GC, Garkhedkar AM, Wang JJ. Efficient Approach to Amide Bond Formation with Nitriles and Peroxides: One-Pot Access to Boronated β-Ketoamides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Babasaheb Sopan Gore
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1 Rd, Sanmin district Kaohsiung City 807 Taiwan
| | - Gopal Chandru Senadi
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1 Rd, Sanmin district Kaohsiung City 807 Taiwan
| | - Amol Milind Garkhedkar
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1 Rd, Sanmin district Kaohsiung City 807 Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1 Rd, Sanmin district Kaohsiung City 807 Taiwan
- Department of Medical Research; Kaohsiung Medical University Hospital; No. 100, Tzyou 1 Rd, Sanmin District Kaohsiung City 807 Taiwan
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15
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Majee D, Biswas S, Mobin SM, Samanta S. Domino reaction of cyclic sulfamidate imines with Morita–Baylis–Hillman acetates promoted by DABCO: a metal-free approach to functionalized nicotinic acid derivatives. Org Biomol Chem 2017; 15:3286-3297. [DOI: 10.1039/c7ob00240h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 4,6-diarylnicotinates have been prepared in good to excellent yields via a domino reaction of cyclic sulfamidate imines with MBH acetates in 2-MeTHF promoted by DABCO under an O2 atmosphere.
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Affiliation(s)
- Debashis Majee
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- India
| | - Soumen Biswas
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- India
| | - Shaikh M. Mobin
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- India
| | - Sampak Samanta
- Discipline of Chemistry
- Indian Institute of Technology Indore
- Simrol
- India
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16
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Goswami L, Gogoi S, Gogoi J, Boruah RK, Boruah RC, Gogoi P. Facile Diversity-Oriented Synthesis of Polycyclic Pyridines and Their Cytotoxicity Effects in Human Cancer Cell Lines. ACS COMBINATORIAL SCIENCE 2016; 18:253-61. [PMID: 26975927 DOI: 10.1021/acscombsci.5b00192] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A three-component cascade method has been developed for the direct synthesis of polysubstituted pyridines. This strategy provides a very convenient route to pyridines using a variety of β-bromo-α,β-unsaturated aldehydes, 1,3-diketones, and ammonium acetate without any additional catalyst or metal salt under mild conditions. A variety of β-ketoesters and 4-hydroxycoumarin were also used instead of 1,3-diketones for the diverse synthesis of polycyclic pyridines. One of the synthesized pyridines has been unambiguously established by a single crystal XRD study. All of the synthesized pyridine derivatives were evaluated for their antiproliferative properties in vitro against the human cancer cell lines HeLa, Me180, and ZR751. Compounds 4{4,1} and 4{2,4} showed significant cytotoxicity in the human breast cancer cell line ZR751 and cervical cancer cell line Me180, respectively, and a few other compounds were found to have moderate activities.
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Affiliation(s)
- Limi Goswami
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Shyamalee Gogoi
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Junali Gogoi
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Rajani K. Boruah
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Romesh C. Boruah
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Pranjal Gogoi
- Medicinal
Chemistry Division and ‡Analytical Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
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17
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Hamama WS, Waly MA, El-Hawary II, Zoorob HH. Utilization of 2-Chloronicotinonitrile in the Syntheses of Novel Fused Bicyclic and Polynuclear Heterocycles of Anticipated Antitumor Activity. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.1631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wafaa S. Hamama
- Chemistry Department, Faculty of Science; Mansoura University; Mansoura ET-35516 Egypt
| | - Mohamed A. Waly
- Chemistry Department, Faculty of Science; Mansoura University; Damietta Egypt
| | | | - Hanafi H. Zoorob
- Chemistry Department, Faculty of Science; Mansoura University; Mansoura ET-35516 Egypt
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18
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Qiao Y, Yang W, Wei D, Chang J. Theoretical investigations toward TMEDA-catalyzed [2 + 4] annulation of allenoate with 1-aza-1,3-diene: mechanism, regioselectivity, and role of the catalyst. RSC Adv 2016. [DOI: 10.1039/c6ra09507k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A computational study on the reaction between allenoate and 1-aza-1,3-diene catalyzed by TMEDA has been performed using the DFT method.
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Affiliation(s)
- Yan Qiao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
| | - Wanjing Yang
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Junbiao Chang
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
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19
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Duttagupta I, Ghosh K, Sinha S. Synthetic Studies Toward Nonribosomal Peptides. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63602-7.00002-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Hussain AA, Abdulla MM, Amr AEGE, Al-Omar MA, Shalaby AFA. Anti-inflammatory activities of some newly synthesized pyridinyl- and indazolyl benzamide derivatives. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2015; 41:87-96. [DOI: 10.1134/s106816201405015x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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21
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Allais C, Grassot JM, Rodriguez J, Constantieux T. Metal-Free Multicomponent Syntheses of Pyridines. Chem Rev 2014; 114:10829-68. [DOI: 10.1021/cr500099b] [Citation(s) in RCA: 363] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christophe Allais
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 MARSEILLE, France
| | - Jean-Marie Grassot
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 MARSEILLE, France
| | - Jean Rodriguez
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 MARSEILLE, France
| | - Thierry Constantieux
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 MARSEILLE, France
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22
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Kalaria PN, Satasia SP, Avalani JR, Raval DK. Ultrasound-assisted one-pot four-component synthesis of novel 2-amino-3-cyanopyridine derivatives bearing 5-imidazopyrazole scaffold and their biological broadcast. Eur J Med Chem 2014; 83:655-64. [DOI: 10.1016/j.ejmech.2014.06.071] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 06/28/2014] [Accepted: 06/28/2014] [Indexed: 11/30/2022]
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23
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Thiopeptide antibiotics: retrospective and recent advances. Mar Drugs 2014; 12:317-51. [PMID: 24445304 PMCID: PMC3917276 DOI: 10.3390/md12010317] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 12/13/2013] [Accepted: 12/16/2013] [Indexed: 02/06/2023] Open
Abstract
Thiopeptides, or thiazolyl peptides, are a relatively new family of antibiotics that already counts with more than one hundred different entities. Although they are mainly isolated from soil bacteria, during the last decade, new members have been isolated from marine samples. Far from being limited to their innate antibacterial activity, thiopeptides have been found to possess a wide range of biological properties, including anticancer, antiplasmodial, immunosuppressive, etc. In spite of their ribosomal origin, these highly posttranslationally processed peptides have posed a fascinating synthetic challenge, prompting the development of various methodologies and strategies. Regardless of their limited solubility, intensive investigations are bringing thiopeptide derivatives closer to the clinic, where they are likely to show their veritable therapeutic potential.
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24
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Bagley MC, Fusillo V, Jenkins RL, Lubinu MC, Mason C. One-step synthesis of pyridines and dihydropyridines in a continuous flow microwave reactor. Beilstein J Org Chem 2013; 9:1957-68. [PMID: 24204407 PMCID: PMC3817555 DOI: 10.3762/bjoc.9.232] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 09/11/2013] [Indexed: 11/23/2022] Open
Abstract
The Bohlmann-Rahtz pyridine synthesis and the Hantzsch dihydropyridine synthesis can be carried out in a microwave flow reactor or using a conductive heating flow platform for the continuous processing of material. In the Bohlmann-Rahtz reaction, the use of a Brønsted acid catalyst allows Michael addition and cyclodehydration to be carried out in a single step without isolation of intermediates to give the corresponding trisubstituted pyridine as a single regioisomer in good yield. Furthermore, 3-substituted propargyl aldehydes undergo Hantzsch dihydropyridine synthesis in preference to Bohlmann-Rahtz reaction in a very high yielding process that is readily transferred to continuous flow processing.
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Affiliation(s)
- Mark C Bagley
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK
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25
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Synthesis, antimicrobial and cytotoxic activity of 2-azetidinone derivatives of pyridyl benzimidazoles. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0775-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Just-Baringo X, Bruno P, Ottesen LK, Cañedo LM, Albericio F, Álvarez M. Total Synthesis and Stereochemical Assignment of Baringolin. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302372] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Just-Baringo X, Bruno P, Ottesen LK, Cañedo LM, Albericio F, Álvarez M. Total Synthesis and Stereochemical Assignment of Baringolin. Angew Chem Int Ed Engl 2013; 52:7818-21. [DOI: 10.1002/anie.201302372] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Indexed: 11/10/2022]
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28
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Waly MA, EL-Hawary II, Hamama WS, Zoorob HH. Synthesis and Antitumor Evaluation of Some New Fused and Binary Pyridines. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohamed A. Waly
- Department of Chemistry, Faculty of Science (Damietta); Mansoura University; Egypt
| | - Ibrahim I. EL-Hawary
- Department of Chemistry, Faculty of Science (Damietta); Mansoura University; Egypt
| | - Wafaa S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura, ET-35516; Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science (Damietta); Mansoura University; Egypt
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29
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Utilization of nicotinonitrile-2-thiol in the synthesis of new thiepino[2,3-b]pyridine derivative as an in vitro novel antitumor potent. Med Chem Res 2013. [DOI: 10.1007/s00044-012-0161-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Gade NR, Devendram V, Pal M, Iqbal J. IBX mediated reaction of β-enamino esters with allylic alcohols: a one pot metal free domino approach to functionalized pyridines. Chem Commun (Camb) 2013; 49:7926-8. [DOI: 10.1039/c3cc44274h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Akai S, Sato KI, Nagaya A, Yamagishi Y, Yonezawa Y, Shin CG. Scope and Limitations of a Modified Hantzsch Reaction for the Synthesis of Oxazole-Dehydroamino Acid Derivatives from Dehydroamino Acid Amides. HETEROCYCLES 2012. [DOI: 10.3987/com-11-12372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Prévost S, Ayad T, Phansavath P, Ratovelomanana-Vidal V. Total Synthesis of Symbioramide: a Flexible Approach for the Efficient Preparation of Structural Isomers. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100579] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Affiliation(s)
- Yan Zou
- North Carolina State University, Department of Chemistry, Raleigh, North Carolina 27695-8204, United States
| | - Qingyang Liu
- North Carolina State University, Department of Chemistry, Raleigh, North Carolina 27695-8204, United States
| | - Alexander Deiters
- North Carolina State University, Department of Chemistry, Raleigh, North Carolina 27695-8204, United States
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34
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Kantevari S, Patpi SR, Addla D, Putapatri SR, Sridhar B, Yogeeswari P, Sriram D. Facile diversity-oriented synthesis and antitubercular evaluation of novel aryl and heteroaryl tethered pyridines and dihydro-6H-quinolin-5-ones derived via variants of the Bohlmann-Rahtz Reaction. ACS COMBINATORIAL SCIENCE 2011; 13:427-35. [PMID: 21699150 DOI: 10.1021/co2000604] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The diversity oriented synthesis of substituted pyridines and dihydro-6H-quinolin-5-ones tethered with aryls and heteroaryls was achieved in very good yields through CeCl(3)·7H(2)O-NaI catalyst via variants of the Bohlmann-Rahtz reaction. β-Enaminones derived from various aryl and heteroaryl methyl ketones were regioselectively reacted with ethyl acetoacetate or 5,5-dimethylcyclohexane-1,3-dione or 4,4-dimethylcyclohexane-1,3-dione and ammonium acetate refluxing in 2-propanol. Applicability of nontoxic cerium catalyst, high reactivity with wide range of aryl and heteroaryl β-enaminones leading to diverse analogues, operational simplicity, and shorter reaction time at comparatively low temperatures are prominent features of the developed protocol. These synthesized substituted pyridines and dihydro-6H-quinolin-5-one analogues have been evaluated for their in vitro antimycobacterial activity against Mycobacterium tuberculosis H37Rv (MTB) by agar dilution method. Among the 48 compounds screened, six compounds 2-(5-chlorothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one 4{13,2}, 2-(5-bromothiophen-2-yl)-7,7-dimethyl-7,8-dihydro-6H-quinolin-5-one 4{14,2}, 2-(5-chloro thiophen-2-yl)-6,6-dimethyl-7,8-dihydroquinolin-5(6H)-one 4{13,3}, and 2-(5-bromothiophen-2-yl)-6,6-dimethyl-7,8-dihydroquinolin-5(6H)-one 4{14,3}, 7,7-dimethyl-2-(naphthalen-2-yl)-7,8-dihydroquinoline-5(6H)-one 4{6,2}, 6,6-dimethyl-2-(naphthalen-2-yl)-7,8-di hydroquinolin-5(6H)-one 4{6,3} resulted as the most promising antitubercular agents.
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Affiliation(s)
| | | | | | | | | | - Perumal Yogeeswari
- Medicinal Chemistry and Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad-500078, India
| | - Dharmarajan Sriram
- Medicinal Chemistry and Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad-500078, India
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35
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Aulakh VS, Ciufolini MA. Total synthesis and complete structural assignment of thiocillin I. J Am Chem Soc 2011; 133:5900-4. [PMID: 21446660 PMCID: PMC3077036 DOI: 10.1021/ja110166x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Indexed: 11/30/2022]
Abstract
The total synthesis of the thiopeptide antibiotic, thiocillin I, is described. This work unequivocally defines the full structure (constitution and configuration) of the natural product as 1.
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Affiliation(s)
| | - Marco A. Ciufolini
- Department of Chemistry, The University of British Columbia, 2036 Main Mall Vancouver, BC V6T 1Z1, Canada
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36
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Bohlmann-Rahtz cyclodehydration of aminodienones to pyridines using N-iodosuccinimide. Molecules 2010; 15:3211-27. [PMID: 20657473 PMCID: PMC6263277 DOI: 10.3390/molecules15053211] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 04/20/2010] [Indexed: 11/17/2022] Open
Abstract
Cyclodehydration of Bohlmann-Rahtz aminodienone intermediates using N-iodosuccinimide as a Lewis acid proceeds at low temperature under very mild conditions to give the corresponding 2,3,6-trisubstituted pyridines in high yield and with total regiocontrol.
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37
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Ciufolini MA, Lefranc D. Micrococcin P1: Structure, biology and synthesis. Nat Prod Rep 2010; 27:330-42. [DOI: 10.1039/b919071f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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del Duque MMS, Allais C, Isambert N, Constantieux T, Rodriguez J. β-Diketo Building Blocks for MCRs-Based Syntheses of Heterocycles. SYNTHESIS OF HETEROCYCLES VIA MULTICOMPONENT REACTIONS I 2010. [DOI: 10.1007/7081_2010_26] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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39
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Catozzi N, Edwards MG, Raw SA, Wasnaire P, Taylor RJK. Synthesis of the Louisianin Alkaloid Family via a 1,2,4-Triazine Inverse-Electron-Demand Diels−Alder Approach. J Org Chem 2009; 74:8343-54. [DOI: 10.1021/jo901761r] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicola Catozzi
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Michael G. Edwards
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Steven A. Raw
- Process Research and Development, AstraZeneca, Silk Road Business Park, Charter Way, Macclesfield, Cheshire SK10 2NA, U.K
| | - Pierre Wasnaire
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
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40
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Aulakh VS, Ciufolini MA. An Improved Synthesis of Pyridine−Thiazole Cores of Thiopeptide Antibiotics. J Org Chem 2009; 74:5750-3. [DOI: 10.1021/jo900950x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Virender S. Aulakh
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Marco A. Ciufolini
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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41
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Merritt EA, Bagley MC. An unusual picoline derivative from the trifluoroacetolysis of thiostrepton. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570440609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Strieter ER, Koglin A, Aron ZD, Walsh CT. Cascade reactions during coronafacic acid biosynthesis: elongation, cyclization, and functionalization during Cfa7-catalyzed condensation. J Am Chem Soc 2009; 131:2113-5. [PMID: 19199623 PMCID: PMC2662718 DOI: 10.1021/ja8077945] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, the biogenesis of the hydrindane ring system within coronafacic acid (CFA) has been investigated. These studies reveal that in addition to the canonical polyketide chain elongation and functionalization encoded by type I polyketide synthase (PKSs), cascade reactions can take place during assembly line-like biosynthesis. Indeed, upon Cfa7-catalyzed Claisen condensation between enzyme-bound malonate and an N-acetylcysteamine (SNAC) thioester, latent reactivity within the elongated enzyme-bound intermediate is unveiled. This reactivity translates into an intramolecular cyclization, which can proceed in a facile manner as observed by the enzyme-independent cyclization of a linear beta-ketothioester intermediate.
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Affiliation(s)
- Eric R Strieter
- Harvard Medical School, Department of Biological Chemistry and Molecular Pharmacology, 240 Longwood Avenue, Boston, Massachusetts 02115, USA
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43
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Sasada T, Sakai N, Konakahara T. Me3SiCl-Promoted Three-Component Coupling Reaction of a Functionalized Enamine, an Acetal, and an Alkyne: An Unprecedented Approach to the Synthesis of Tetrasubstituted Pyridines via a [3 + 2 + 1] Intermolecular Cyclization. J Org Chem 2008; 73:6905-8. [DOI: 10.1021/jo801090h] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Toshiaki Sasada
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science (RIKADAI), Noda, Chiba 278-8510, Japan
| | - Norio Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science (RIKADAI), Noda, Chiba 278-8510, Japan
| | - Takeo Konakahara
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science (RIKADAI), Noda, Chiba 278-8510, Japan
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44
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Kantevari S, Chary MV, Vuppalapati SVN, Lingaiah N. Microwave-assisted regioselective one-pot synthesis of trisubstituted pyridine scaffolds using K5CoW12O40.3H2O under solvent free conditions. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450424] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Martin T, Verrier C, Hoarau C, Marsais F. Direct C-2 Arylation of Alkyl 4-Thiazolecarboxylates: New Insights in Synthesis of Heterocyclic Core of Thiopeptide Antibiotics. Org Lett 2008; 10:2909-12. [DOI: 10.1021/ol801035c] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Thibaut Martin
- Institut de Chimie Organique Fine (IRCOF) associé au CNRS (UMR 6014), INSA et Université de Rouen, BP08 76131 Mont Saint Aignan, France
| | - Cécile Verrier
- Institut de Chimie Organique Fine (IRCOF) associé au CNRS (UMR 6014), INSA et Université de Rouen, BP08 76131 Mont Saint Aignan, France
| | - Christophe Hoarau
- Institut de Chimie Organique Fine (IRCOF) associé au CNRS (UMR 6014), INSA et Université de Rouen, BP08 76131 Mont Saint Aignan, France
| | - Francis Marsais
- Institut de Chimie Organique Fine (IRCOF) associé au CNRS (UMR 6014), INSA et Université de Rouen, BP08 76131 Mont Saint Aignan, France
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46
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Kantevari S, Chary MV, Vuppalapati SV. A highly efficient regioselective one-pot synthesis of 2,3,6-trisubstituted pyridines and 2,7,7-trisubstituted tetrahydroquinolin-5-ones using K5CoW12O40·3H2O as a heterogeneous recyclable catalyst. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.10.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Štefane B, Polanc S. Aminolysis of 2,2-difluoro-4-alkoxy-1,3,2-dioxaborinanes: route to β-keto amides and β-enamino carboxamides. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.085] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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48
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Hughes RA, Moody CJ. From Amino Acids to Heteroaromatics—Thiopeptide Antibiotics, Nature's Heterocyclic Peptides. Angew Chem Int Ed Engl 2007; 46:7930-54. [PMID: 17854013 DOI: 10.1002/anie.200700728] [Citation(s) in RCA: 231] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Amino acids, the building blocks of proteins, also serve as precursors to a wide range of other naturally occurring substances including alkaloids, antibiotics, and, the subject of this Review, heterocyclic peptides. Simple alpha-amino acids are converted into complex arrays of heteroaromatic rings that display interesting and potent biological activity. The thiopeptide antibiotics, with their complex molecular architectures, are wonderful examples. In this Review we show how organic chemists have developed innovative methods for the synthesis of the heterocyclic ring systems, including routes inspired by the likely biosynthetic processes, and successfully assembled such building blocks into the final target molecule by application of orthogonal protecting groups and coupling methodologies.
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Affiliation(s)
- Rachael A Hughes
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315-Oslo, Norway
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49
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Hughes R, Moody C. Von Aminosäuren zu Heteroarenen – Thiopeptid-Antibiotika als heterocyclische Peptide aus der Natur. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700728] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Five-membered ring systems: with N and S (Se, Te) atoms. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0959-6380(07)80013-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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