Enantioselective syntheses of D- and L-ribo- and arabino-C18- phytosphingosine from (R)-2,3-0-isopropylidene glyceraldehyde

作者: Johann Mulzer , Clemens Brand

DOI: 10.1016/S0040-4020(01)96078-8

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摘要: Abstract Practical syntheses of homochiral D- and L-ribo- arabino-C18-phytosphingosine 1 2 from (R)-2,3-0-iso-propylidene glyceraldehyde ( 3 ) are described (Scheme 1), the key steps being: (1) Z -selective olefination (→5) (2) selective monobenzoylation diol 6 (→ 7 ); (3) Mitsunobu-type introduction nitrogen →9); (4) osmylation 9 10 / 11 ).

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