A highly stereoselective and sterospecific palladium-catalyzed glycosylation reaction of a variety of alcohols is reported. The reaction selectively converts alpha-2-substituted 6-carboxy-2H-pyran-3(6H)-ones into alpha-2-substituted 6-alkoxy-2H-pyran-3(6H)-ones with complete retention of configuration and similarly converts the pyranones with beta-carboxy groups into pyranones with beta-alkoxy groups. The reaction works equally well with both amino acid- and carbohydrate-based alcohols. To demonstrate the utility of this process for carbohydrate chemistry several of the products were selectively converted into alpha-manno-pyranosides in two additional steps. Because the 2-substituted 6-carboxy-2H-pyran-3(6H)-ones are prepared by asymmetric synthesis, this reaction can be used for the preparation of either d- or l-pyranones.
A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides. Publishing Authors By Initials
A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides. Journal Published:
PUBLICATION TYPE: Research Support, U.S. Gov't,
Journal: Journal of the American Chemical Society
VOLUME: 125
Page Numbers: 12406-7
Journal Abbreviation: J. Am. Chem. Soc.
ISSN: 0002-7863
DAY: 15
MONTH: Oct
YEAR: 2003
A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides. Information
Number of References:
LANGUAGE: eng
NlmUniqueID: 7503056
A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides. Keywords Mesh Terms:
KEYWORDS: Pyrans
MESH TERMS: chemistry
Chemical & Substance for Abstract: A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides. Information
Substance Name: Palladium
Registry Number: 7440-05-3
Grant and Affiliation Information for A palladium-catalyzed glycosylation reaction: the de novo synthesis of natural and unnatural glycosides.
AFFILIATION: Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, USA.
Country: United States
AGENCY: United States NIGMS
GRANT: 1R01 GM63150-01A1
ACRONYM: GM
MEDLINETA: J Am Chem Soc
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