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Hawsawi M, Pirrone MG, Wickramasinghe A, Crich D. Use of hydroxylamines, hydroxamic acids, oximes and amines as nucleophiles in the Zbiral oxidative deamination of N-acetyl neuraminic acid. Isolation and characterization of novel mono- and disubstitution products. Carbohydr Res 2020; 490:107921. [PMID: 32171977 PMCID: PMC7250565 DOI: 10.1016/j.carres.2020.107921] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/20/2020] [Accepted: 01/20/2020] [Indexed: 12/14/2022]
Abstract
The oxidative deamination of N-nitroso N-acetylneuraminic acid (NeuAc) derivatives is a useful reaction for the formation of 5-desamino-5-hydroxy NeuAc derivatives and their stereoisomers. We demonstrated previously that replacement of the classical nucleophile in these reactions, acetic acid, by phenols resulted in a novel double displacement process with substitution of the acetoxy group at the 4-position taking place in addition to that of the 5-acetamido group, for which we postulated a mechanism centered on the formation of a highly reactive vinyl diazonium ion. We now extend these studies to encompass the use of hydroxylamine-based systems and weakly basic amines as nucleophile. We find that the nature of the product depends significantly on the pKa of the nucleophile, with the more acidic species typically affording only substitution at the 5-position, while the less acidic species give mixtures of elimination products and disubstitution products. The use of aniline as nucleophile is of particular note as it affords a novel aziridine spanning positions 4- and 5- of the neuraminic acid skeleton.
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Affiliation(s)
- Mohammed Hawsawi
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA
| | - Michael G Pirrone
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA; Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, USA
| | - Anura Wickramasinghe
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA; Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, USA.
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA; Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, USA; Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA, 30602, USA; Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA.
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Liu H, Li X. A Stereoselective Ring-Closing Glycosylation via Nonglycosylating Pathway. J Org Chem 2014; 79:5834-41. [DOI: 10.1021/jo5006763] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Han Liu
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Xuechen Li
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
- State
Key Laboratory of Synthetic Chemistry, University of Hong Kong, Hong Kong, PR China
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Cai F, Yang F. Sulfenyl Triflates as Glycosylation Promoters: Applications in Synthesis and Mechanistic Studies. J Carbohydr Chem 2014. [DOI: 10.1080/07328303.2013.875554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Feng Cai
- a Department of Biochemistry , University of Texas Southwestern Medical Center , Dallas , TX , 75390 , USA
| | - Fan Yang
- a Department of Biochemistry , University of Texas Southwestern Medical Center , Dallas , TX , 75390 , USA
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Tanaka H, Takahashi D, Takahashi T. Stereoselective Synthesis of Oligo-α(2,8)-3-deoxy-D-manno-2-octulosonic Acid Derivatives. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200503299] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tanaka H, Takahashi D, Takahashi T. Stereoselective Synthesis of Oligo-α(2,8)-3-deoxy-D-manno-2-octulosonic Acid Derivatives. Angew Chem Int Ed Engl 2006; 45:770-3. [PMID: 16374791 DOI: 10.1002/anie.200503299] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hiroshi Tanaka
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan
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Affiliation(s)
- K H Jung
- Fachbereich Chemie, Universität Konstanz, Fach M 725, D-78457 Konstanz, Germany
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