Intermediates 4 and 5have been coupled via a Shapiro reaction to afford compound 6 which has been further elaborated to the ABCtaxcid systems 11and 12via a McMurry pinacol cyclization to 11followed by oxidation to12.
K. C. Nicolaou, Z. Yang, E. J. Sorensen and M. Nakada, J. Chem. Soc., Chem. Commun., 1993, 1024 DOI: 10.1039/C39930001024
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