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Synthesis 2010(3): 498-504
DOI: 10.1055/s-0029-1218591
DOI: 10.1055/s-0029-1218591
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Stereoselective Synthesis of Fluorinated and Nonfluorinated Triazolo Analogues of Ceramides
Weitere Informationen
Received
21 July 2009
Publikationsdatum:
07. Dezember 2009 (online)
Publikationsverlauf
Publikationsdatum:
07. Dezember 2009 (online)
Abstract
A series of diastereomeric fluorinated and nonfluorinated triazolo analogues of naturally occurring sphingolipids like dihydroceramide suitable for physicochemical and medicinal chemistry applications were prepared enantioselectively. Key steps of the synthetic sequence are asymmetric Sharpless dihydroxylation of α,β-unsaturated esters to diols, regioselective ring opening of derived cyclic sulfates by azide, 1,3-dipolar cycloaddition with alkynes, and reduction of the ester groups.
Key words
sphingolipids - asymmetric synthesis - 1,3-dipolar cycloaddition - triazoles - enantioselective fluorination - nucleophilic substitution
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