Abstract
Pterocarine and galeon are typical examples of diarylether heptanoids (DAEHs) with planar chirality due to the strictly constrained conformations in their molecular skeletons. The characterized oxa[1,7]metapara-cyclophane motifs in DAEHs impose great challenges for their enantioselective synthesis. The asymmetric syntheses of (-)-pterocarine and (-)-galeon are demonstrated by employing a chiral phase transfer-catalyzed highly enantioselective SNAr cyclization as the key step for the formation of a diarylether cyclophane skeleton.
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