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Showing papers on "Glycal published in 1986"




Journal ArticleDOI
TL;DR: Activated zinc in tetrahydrofuran efficiently converts derivatives of furanosyl and pyranosyl halides into glyacals as mentioned in this paper, and can be used to convert derivatives of pyrano-naphroxyl halide derivatives to glyacal derivatives.
Abstract: Activated zinc in tetrahydrofuran efficiently converts derivatives of furanosyl and pyranosyl halides into glyacals.

29 citations



Journal ArticleDOI
TL;DR: Stereochimie de l'addition de chlore et de brome au di-O-acetyl-3,4 L-rhammal, d'Oacetyl 3, 4 L-fucal, and a d'autres glycals.
Abstract: Stereochimie de l'addition de chlore et de brome au di-O-acetyl-3,4 L-rhammal, di-O-acetyl-3,4 L-fucal et a d'autres glycals

20 citations


Journal ArticleDOI
TL;DR: The first enantiospecific synthesis of natural (R )-(+)-α-lipoic acid in 13 steps starting from d -glucose is described in this paper.

19 citations




Journal ArticleDOI
TL;DR: In this article, 2-Azido-2-deoxypentose derivatives having D-xylo and L-arabino configurations were prepared via azidonitration of 1,5-anhydro-2deoxyment-1enitols, that is, xylal and arabinal derivatives, respectively.
Abstract: 2-Azido-2-deoxypentose derivatives having D-xylo and L-arabino configurations were prepared via azidonitration of 1,5-anhydro-2-deoxypent-1-enitols, that is, xylal and arabinal derivatives, respectively. The L-ribo isomer was prepared by substitution of 2-trifluoromethylsulfonyloxy and 2-(1-imidazolylsulfonyloxy) group with azide. The D-xylo isomer was converted into the corresponding D-ribo and D-lyxo isomers.

13 citations



Journal ArticleDOI
TL;DR: In this paper, the reactions of l'isocyanate de trichloroacetyle with trich chloroacetyl avec les di-O-acetyl L-rhamnal et -L-xylal conduisent a des perhydro pyranno [3,2-e] oxazine-1,3ones-4 and a des oxa-2aza-8bicyclo [4.2] octanones-7
Abstract: Les reactions de l'isocyanate de trichloroacetyle avec les di-O-acetyl L-rhamnal et -L-xylal conduisent a des perhydro pyranno [3,2-e] oxazine-1,3ones-4 et a des oxa-2aza-8bicyclo [4.2.0] octanones-7