The total synthesis of pseudomonic acid C is described using an approach which gives access to analogues and putative biosynthetic precursors; the key step is installation of the C7 side-chain via alkylation of a trisubstituted δ-lactone with complete stereocontrol and in 85% yield under conditions which avoid the possible competing elimination of a protected hydroxy group β to the carbonyl.
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Mckay et al. (2000) studied this question.
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