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Wang JM, Zhao Y, Li WP, Kong XJ, Yao CS, Zhang K. Synthesis of tetracyclic dibenzo[ b, f][1,4]oxazepine-fused β-lactams via visible-light-induced Staudinger annulation. Org Biomol Chem 2023; 21:7106-7114. [PMID: 37610712 DOI: 10.1039/d3ob01078c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An efficient visible-light-induced Staudinger [2 + 2] annulation reaction between α-diazo ketones and dibenzo[b,f][1,4]oxazepine/thiazepine-imines under catalyst-free conditions has been developed. This protocol provides a facile method to synthesize tetracyclic dibenzo[b,f][1,4]oxazepine/thiazepine-fused β-lactams bearing a quaternary carbon center with a broad substrate scope and high efficiency (37 examples, up to >99% yield).
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Affiliation(s)
- Jiao-Mei Wang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221018, P. R China
| | - Yu Zhao
- College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shanxi 716000, P. R. China
| | - Wen-Ping Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Xiang-Jun Kong
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221018, P. R China
| | - Chang-Sheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
| | - Kai Zhang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China.
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2
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Minuto F, Lambruschini C, Basso A. Ketene 3‐Component Staudinger Reaction (K‐3CSR) to β‐Lactams: A New Entry in the Class of Photoinduced Multicomponent Reactions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Federica Minuto
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
| | - Chiara Lambruschini
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
| | - Andrea Basso
- Department of Chemistry and Industrial Chemistry Università degli Studi di Genova Via Dodecaneso 31 16146 Genova Italy
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Hua TB, Yang QQ, Zou YQ. Recent Advances in Enantioselective Photochemical Reactions of Stabilized Diazo Compounds. Molecules 2019; 24:molecules24173191. [PMID: 31480796 PMCID: PMC6749315 DOI: 10.3390/molecules24173191] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 08/25/2019] [Accepted: 08/26/2019] [Indexed: 12/30/2022] Open
Abstract
Diazo compounds have proven to be a useful class of carbenes or metal carbenoids sources under thermal, photochemical, or metal-catalyzed conditions, which can subsequently undergo a wide range of synthetically important transformations. Recently, asymmetric photocatalysis has provoked increasing research interests, and great advances have been made in this discipline towards the synthesis of optically enriched compounds. In this context, the past two decades have been the most productive period in the developments of enantioselective photochemical reactions of diazo compounds due to a better understanding of the reactivities of diazo compounds and the emergence of new catalytic modes, as well as easier access to and treatment of stabilized diazo compounds. This review highlights these impressive achievements according to the reaction type, and the general mechanisms and stereochemical inductions are briefly discussed as well.
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Affiliation(s)
- Ting-Bi Hua
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang 443002, Hubei, China
| | - Qing-Qing Yang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang 443002, Hubei, China.
| | - You-Quan Zou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang 443002, Hubei, China
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Golubev AA, Smetanin IA, Agafonova AV, Rostovskii NV, Khlebnikov AF, Starova GL, Novikov MS. [2 + 1 + 1] Assembly of spiro β-lactams by Rh(ii)-catalyzed reaction of diazocarbonyl compounds with azirines/isoxazoles. Org Biomol Chem 2019; 17:6821-6830. [PMID: 31250875 DOI: 10.1039/c9ob01301f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A domino synthesis of dispiro-fused N-vinyl β-lactams from diazo-Meldrum's acid and 2H-azirines or 5-alkoxyisoxazoles via the "2-azabuta-1,3-diene formation/Staudinger ketene-imine cycloaddition" sequence is described. The Rh2(Piv)4-catalyzed formation of the 2-azabuta-1,3-diene intermediates in the first stage of the reaction sequence proceeds via addition of the rhodium carbenoid to the azirines/isoxazoles and provides the first example of the generation of iminium-type ylides from diazo-Meldrum's acid. This methodology was extended to monospiro-β-lactams, which were synthesized in two steps using acyclic α-diazocarbonyl compounds in the stage of the formation of 2-azabuta-1,3-dienes. The method allows for the rapid assemblage of the carbon part of the azetidin-2-one system from diazo compounds only and affords spiro- and dispiro-β-lactams in moderate yields. A bromine atom in the 2-bromoalkenyl moiety of the synthesized β-lactams can be easily substituted by hydrogen under catalytic hydrogenation conditions or by 2-pyridyl-substituent via the Stille cross-coupling reaction.
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Affiliation(s)
- Artem A Golubev
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Ilia A Smetanin
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Anastasiya V Agafonova
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Nikolai V Rostovskii
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Alexander F Khlebnikov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Galina L Starova
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Mikhail S Novikov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
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Zarezin DP, Nenajdenko VG. Diazocarbonyl derivatives of amino acids: unique chiral building blocks for the synthesis of biologically active compounds. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4852] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This review deals with applications of chiral α-amino diazoketones, α-amino acid derivatives, in the synthesis of various biologically active compounds. General approaches to the synthesis of chiral α-amino diazoketones, including the Arndt – Eistert reaction, acylation of trimethylsilyldiazomethanes, etc., are discussed. Due to the presence of three functional groups, these building blocks can be used to produce a wide range of organic compounds with potential physiological activity, ranging from various heterocyclic compounds to peptidomimetics. Methods for the synthesis of β-amino acid-containing peptides and depsipeptides, amino acid derivatives and heterocyclic compounds with three- to seven-membered rings are considered.
The bibliography includes 226 references.
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Huang B, Zeng L, Shen Y, Cui S. One-Pot Multicomponent Synthesis of β-Amino Amides. Angew Chem Int Ed Engl 2017; 56:4565-4568. [DOI: 10.1002/anie.201700840] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 02/24/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Bo Huang
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Linwei Zeng
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Yangyong Shen
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Sunliang Cui
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
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Huang B, Zeng L, Shen Y, Cui S. One-Pot Multicomponent Synthesis of β-Amino Amides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bo Huang
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Linwei Zeng
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Yangyong Shen
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
| | - Sunliang Cui
- Institute of Drug Discovery and Design; College of Pharmaceutical Sciences; Zhejiang University; 866 Yuhangtang Road, Hangzhou 310058 Zhejiang China
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8
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1093] [Impact Index Per Article: 121.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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9
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Heteroatom effect on potential energy topology. A novel reaction mechanism of stereospecific Staudinger synthesis. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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10
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Arya N, Jagdale AY, Patil TA, Yeramwar SS, Holikatti SS, Dwivedi J, Shishoo CJ, Jain KS. The chemistry and biological potential of azetidin-2-ones. Eur J Med Chem 2014; 74:619-56. [PMID: 24531200 DOI: 10.1016/j.ejmech.2014.01.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/30/2013] [Accepted: 01/02/2014] [Indexed: 12/12/2022]
Abstract
Azetidin-2-ones, commonly referred as β-lactams, represent a unique ring system, with interesting chemistry and great biological potential. Besides its well known antibiotic activity, this ring system exhibits a wide range of activities, attracting the attention of researchers. The biological and pharmacological profile of azetidin-2-ones is reviewed here comprehensively with several examples under fourteen different activity heads. The chemistry and methods of synthesis have also been discussed.
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Affiliation(s)
- Nikhilesh Arya
- Department of Chemistry, Banasthali University, Tonk 304022, Rajasthan, India; Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India
| | - Archana Y Jagdale
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India
| | - Tushar A Patil
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India
| | - Shradha S Yeramwar
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India
| | - Sidharam S Holikatti
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India
| | - Jaya Dwivedi
- Department of Chemistry, Banasthali University, Tonk 304022, Rajasthan, India
| | - Chamanlal J Shishoo
- B.V. Patel Pharmaceutical Education and Research Development (PERD) Centre, S.G. Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - Kishor S Jain
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmaceutical Sciences, Lonavala, Pune 410401, Maharashtra, India.
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Siciliano C, De Marco R, Guidi LE, Spinella M, Liguori A. A One-Pot Procedure for the Preparation of N-9-Fluorenylmethyloxycarbonyl-α-amino Diazoketones from α-Amino Acids. J Org Chem 2012; 77:10575-82. [DOI: 10.1021/jo301657e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carlo Siciliano
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Rosaria De Marco
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Ludovica Evelin Guidi
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Mariagiovanna Spinella
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Angelo Liguori
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
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Aubry S, Aubert G, Cresteil T, Crich D. Synthesis and biological investigation of the β-thiolactone and β-lactam analogs of tetrahydrolipstatin. Org Biomol Chem 2012; 10:2629-32. [DOI: 10.1039/c2ob06976h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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13
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Vishwanatha T, Narendra N, Sureshbabu VV. Synthesis of β-lactam peptidomimetics through Ugi MCR: first application of chiral Nβ-Fmoc amino alkyl isonitriles in MCRs. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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15
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Addition of allylzinc to α-amino acid-derived imines: synthesis of diamino alcohols by hydroboration. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-009-0239-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Mandal B, Ghosh P, Basu B. Recent Approaches Toward Solid Phase Synthesis of β-Lactams. HETEROCYCLIC SCAFFOLDS I 2010. [DOI: 10.1007/7081_2009_9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Taubinger AA, Fenske D, Podlech J. Synthesis of β,β′-diamino acids from α-amino acid-derived β-lactams by ring opening with nucleophiles. Utilization in the synthesis of peptidomimetics. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Wang Y, Liang Y, Jiao L, Du DM, Xu J. Do Reaction Conditions Affect the Stereoselectivity in the Staudinger Reaction? J Org Chem 2006; 71:6983-90. [PMID: 16930052 DOI: 10.1021/jo0611521] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The stereochemistry is one of the critical issues in the Staudinger reaction. We have proposed the origin of the stereoselectivity recently. The effects of solvents, additives, and pathways of ketene generation on the stereoselectivity were investigated by using a clean Staudinger reaction, which is a sensitive reaction system to the stereoselectivity. The results indicate that the additives, usually existed and generated in the Staudinger reaction, and the pathways of the ketene generation do not generally affect the stereoselectivity. The solvent affects the stereoselectivity. The polar solvent is favorable to the formation of trans-beta-lactams. The addition orders of the reagents affect the stereoselectivity in the Staudinger reaction between acyl chlorides and imines. The addition of a tertiary amine into a solution of the acyl chloride and the imine generally decreases the stereoselectivity, which is affected by the interval between additions of the acyl chloride and the tertiary amine, and the imine substituents. Our current results provide further understanding on the stereochemistry of the Staudinger reaction between acyl chlorides and imines and on the factors affecting the stereochemistry and also provide a method to prepare beta-lactams with the desired relative configuration via rationally tuning the stereoselectivity-controlling factors in the Staudinger reaction.
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Affiliation(s)
- Yikai Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
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19
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Cardillo G, Fabbroni S, Gentilucci L, Perciaccante R, Tolomelli A. Highly Regio- and Diastereoselective Palladium-Catalyzed Allylic Substitution. Synthesis of 3-(2-Aminobutylidene)- 4-arylazetidin-2-ones. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200404385] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Stereoselective reductive amination of chiral trans-3-acetyl-4-alkylpyrrolidin-2-ones. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/j.tetasy.2003.08.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Campomanes P, Menéndez MI, Sordo TL. Theoretical study of the mechanism of the formation of 3-unsubstituted 4,4-disubstituted beta-lactams by silver-induced ring expansion of alkoxycyclopropylamines: a new synthetic route to 4-alkoxycarbonyl-4-alkyl-2-azetidinones. J Org Chem 2003; 68:6685-9. [PMID: 12919033 DOI: 10.1021/jo034803r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanisms of formation of 4,4-dialkyl- and 4-alkoxycarbonyl-4-alkyl-2-azetidinones by silver-induced ring expansion of the corresponding 2,2-disubstituted N-chloro-1-hydroxycyclopropylamines were theoretically investigated by means of the B3LYP method and the PCM solvation model. The obtained results indicate that these reactions are facile two-step regioselective processes proceeding through a short-life nitrenium intermediate. The theoretical results thus predict that this synthetic strategy, which has already been used to obtain 4,4-dialkyl-2-azetidinones, could also be a new route to efficiently obtain in a regio- and stereoselective way 4-alkoxycarbonyl-4-alkyl-2-azetidinones, which are precursors of conformationally constrained amino acids.
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Affiliation(s)
- Pablo Campomanes
- Departamento de Química Física y Analítica, Facultad de Química, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Principado de Asturias, Spain
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Malachowski WP, Tie C, Wang K, Broadrup RL. The synthesis of azapeptidomimetic beta-lactam molecules as potential protease inhibitors. J Org Chem 2002; 67:8962-9. [PMID: 12467415 DOI: 10.1021/jo026280d] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthetic methods for the construction of a novel peptidomimetic structure are reported. The structure incorporates a beta-lactam and an azapeptide in a peptide backbone with the intention of generating rationally designed substrate-based protease inhibitors. The beta-lactam is formed by subjecting serine or threonine-azapeptides to Mitsunobu reaction conditions. Importantly, the azapeptidomimetic beta-lactam structure permits extended binding inhibition and the synthetic methods to create tetrapeptidomimetic structures are described.
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Affiliation(s)
- William P Malachowski
- Department of Chemistry and Physics, The University of New England, Biddeford, Maine 04005, USA
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Han Y, Mierke DF, Chorev M. Homologs of 1,2,5-hexahydro-3-one-1H-1,4-diazepine (DAP) as novel dipeptidomimetics and molecular scaffolds: efficient preparation of synthons. Biopolymers 2002; 64:1-15. [PMID: 11948437 DOI: 10.1002/bip.10079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Structurally constraint dipeptidomimetics represent an important class of conformationally rigid dipeptide surrogates and molecular scaffolds, which are frequently employed in peptide-based structure-activity relationships (SAR) and construction of combinatorial libraries. We report on the design of an improved and general synthetic procedure to prepare synthons related to the trisubstituted 1,2,5-hexahydro-3-one-1H-1,4-diazepines [DAP(Xxx)(alpha7)] (DAP: 1,2,5-hexahydro-3-one-1H-1,4-diazepine; DAP(Xxx)(alpha7): the homologous series of DAP in which alpha refers to the location of the chiral carbon in the i(th) amino acid, Xxx represents the three letter notation for the i-1 amino acids, and 7 denotes the number of atoms in the ring) and their higher homologs [DAP(Xxx)(alphaN)] [Xxx = Phe, Asp(beta-OcHex) (cHex: cyclohexyl), and Arg(N(G)-Tos] (Tos: p-toluenesulfonyl); N = 8-10]. These dipetidomimetic structures are generated by reductive alkylation-mediated Calpha(i)-to-N(i-1) bridging between a Calpha (i)-(CH(2))(i-1)(n)-COSEt (n = 1-4) and H(2)N-C(i-1)HR-CO(2)Fm (Fm: 9-fluorenylmethyl) followed by H(2)N(i)-to-C(i-1)-CO(2)H lactam formation. We also describe the preparation of blocked N-Ac-[DAP(Phe)(alphaN)]-CONMe(2) (N = 8-10), which serve as model systems for detailed conformational analysis reported in the accompanying article.
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Affiliation(s)
- Yinglin Han
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue (HIM 944), Boston, MA 02215, USA
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González-Muñiz R, Gerona-Navarro G, Angeles Bonache M, Reyero N, Teresa García-López M. Amino Acid-derived 4-Alkyl-4-carboxy-2-azetidinones. New Insights into b-Lactam Ring Formation and N-Deprotection. HETEROCYCLES 2002. [DOI: 10.3987/com-01-9400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Linder MR, Podlech J. Synthesis of beta-lactams from diazoketones and imines: the use of microwave irradiation. Org Lett 2001; 3:1849-51. [PMID: 11405727 DOI: 10.1021/ol015891+] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[see reaction]. The transformation of diazoketones derived from alpha-amino acids to ketenes that, in turn, react further with imines to afford beta-lactams, can be realized not only by utilizing photochemical reaction conditions but also under the action of microwave irradiation. Under the latter reaction conditions 4-alkenyl-substituted beta-lactams derived from amino acids, substrates that were not previously accessible, have been prepared. beta-Lactams possessing a trans-substitution pattern at the ring were obtained exclusively.
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Affiliation(s)
- M R Linder
- Institut für Organische Chemie der Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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