The total syntheses of four 14-membered ring lactones, (1a), (2a), (22), and (23), are described. The starting materials are the appropriate 2-hydroxybenzoic or (2-hydroxyphenyl)acetic acids and the final step in each case involves lactonization using a modification of the Corey pyridinethiol ester procedure.
K. Smith, I. K. Morris, P. G. Owen and R. J. Bass, J. Chem. Soc., Perkin Trans. 1, 1988, 77 DOI: 10.1039/P19880000077
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