First Stereocontrolled Synthesis of the (3<i>S</i>,5<i>R</i>,7<i>R</i>,10<i>R</i>,11<i>R</i>)-C1−C13 Fragment of Nystatin A<sub>1</sub>
作者:Guy Solladié、Nicole Wilb、Claude Bauder、Carlo Bonini、Licia Viggiani、Lucia Chiummiento
DOI:10.1021/jo990245y
日期:1999.7.1
A convergent stereoselective synthesis of the (3S,5R,7R,10R,11R)-C1-C13 fragment of Nystatin Al is reported in this paper. This fragment contains an all-syn-1,3,5-triol subunit and a syn-1,2-diol moiety. The main features of the synthesis are the enzymatic desymmetrization of a meso diol to obtain an enantiomerically pure syn-4,6-dihydroxy-2-keto-phosphonate, chiral sulfoxide chemistry to prepare an alpha-(R)-hydroxyaldehyde and 2-trimethylsilyl thiazole reagent to synthesize a synthesize a syn-alpha,beta-(R,S)-dihydroxy aldehyde.