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  4. Enantiomerically Pure 7-Oxabicyclo(2.2.1)Hept-5-En-2-Yl Derivatives (Naked Sugars) as Synthetic Intermediates .25. Total Asymmetric-Synthesis of 3-Amino-3-Deoxy-L-Talose and Derivatives
 
research article

Enantiomerically Pure 7-Oxabicyclo(2.2.1)Hept-5-En-2-Yl Derivatives (Naked Sugars) as Synthetic Intermediates .25. Total Asymmetric-Synthesis of 3-Amino-3-Deoxy-L-Talose and Derivatives

Hunenberger, P.
•
Allemann, S.
•
Vogel, P.  
1994
Carbohydrate Research

(1R,2R,4R)-2-exo-Cyano-7-oxabicyclo[2.2.1]hept-5-en-2-yl (1S')-camphanate [(+)-1, Diels-Alder adduct of furan to 1-cyanovinyl (1S)-camphanate] was transformed with high stereoselectivity into (1R,2R,6R,7R)-4-phenyl-3,10-dioxa-5-azatricyclo[5.2.1.0(2,6)]dec-4-en-9- one [(+)-10]. Bromination of the corresponding (tert-butyl)dimethylsilyl enol ether [(-)-11], followed by Baeyer-Villiger oxidation and then alkaline methanolysis provided methyl 3-amino-1,5-anhydro-2-O,3-N-benzoyl-3-deoxy-alpha-L-talofuranuronate [(-)-17], the reduction of which gave 3-amino-1,5-anhydro-2-O,3-N-benzoyl-3-deoxy-alpha-L-talofuranose [(-)-19]. Treatment with aqueous HCl furnished 3-amino-3-deoxy-L-talose hydrochloride [(-)-2].

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Type
research article
DOI
10.1016/0008-6215(94)80034-0
Author(s)
Hunenberger, P.
Allemann, S.
Vogel, P.  
Date Issued

1994

Published in
Carbohydrate Research
Volume

257

Issue

2

Start page

175

End page

187

Subjects

Naked sugars

•

7-oxabicyclo<2.2.1>heptane

•

additions

•

furan

•

acids

Note

Univ lausanne,chim sect,ch-1005 lausanne,switzerland.

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LGSA  
Available on Infoscience
November 9, 2005
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/219692
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