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Enantiodivergent synthesis of d- and l-erythro-sphingosines through mannich-type reactions of N-benzyl-2,3-O-isopropylidene-d-glyceraldehyde nitrone

AuthorsMerino, Pedro ; Jiménez, Pablo ; Tejero, Tomás
Issue DateMay-2006
PublisherAmerican Chemical Society
CitationJournal of Organic Chemistry 71(12): 4685-4688 (2006)
AbstractThe addition of a 2-silyloxy silylketene acetal to N-benzyl-2,3-O-isopropylidene-d-glyceraldehyde nitrone (Mannich-type reaction) can be stereocontrolled to give 2S,3S,4S and 2R,3R,4S adducts as major compounds, depending on whether the reaction is activated with zinc(II) triflate or tin(IV) chloride, respectively. The corresponding major adducts were used for preparing diastereomeric polyhydroxy-β-aminoesters that were further converted into suitable orthogonally protected enantiomeric d- and l-erythro-sphingosines.
Description4 pages, 2 schemes, 1 table.-- Supporting Information Available: http://pubs.acs.org.
Publisher version (URL)http://dx.doi.org/10.1021/jo060465t
Appears in Collections:(ICMA) Artículos
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