Abstract
New schemes of synthesis of (2S)-4-methyl- and (2S)-4-methyl-6-oxo-3,6-dihydro-2H-pyran-2-carbaldehydes have been developed with the goal of obtaining C22–C27 fragments of fijianolides and their synthetic analogs on the basis of transformations of cyclopropanol intermediates. The C22–C27 block of fijianolides A and B has been synthesized.
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