Synthesis of plakortethers F and G.

Synthesis of plakortethers F and G has been performed by taking advantage of the symmetry in the structure. The structures of the prepared compounds have been confirmed by COSY, 1D NOE, and chemical transformation studies. The synthetic plakortether F was found to match the natural product by all physical data. The synthetic plakortether G exhibited several disagreements in (13)C NMR data with the reported values. However, on the basis of an extremely close match in appearance of its (1)H NMR spectrum to the obtained (1)H NMR spectrum of the natural product, as well as matching optical rotations, the two compounds are believed to be identical.