Synthetic studies of the ionophore antibiotic zincophorin. 2. Iterative sigmatropic construction of the C1-C11 subunit

Article abstract of DOI:10.1016/S0040-4039(00)77501-0

Advanced intermediates 22 and 23, representing the C₁-C₁₁ subunit of the ionophore zincophorin, have been prepared by a scheme incorporating sequential glycolate Claisen and [2,3] Wittig rearrangements to establish the key structural