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The highly stereoselective synthesis of the AB-ring system of macquarimicin
s, a novel class of microbial metabolites with inhibitory activity for neut
ral sphingomyelinase, has been achieved. The present synthesis features the
highly stereocontrolled construction of the cis-tetrahydroindan structure
via the intramolecular Diels-Alder reaction of an (E,Z,E)-1,6,8-nonatrlene
derived from D-glyceraldehyde acetonide.