Abstract

AbstractThe synthesis of (R,S)‐(–)‐dehydroiridodiol(dial) [(R,S)‐6b], isolated from the plant Actinidia polygama Miq., and its analogues, in high diastereo‐ and enantiomeric purity (ee ⩾ 96%) is described. Key steps of the synthesis are the Michael addition of metallated SAMP hydrazones [(S)‐1] to the 2‐cyclopentenecarboxylate 2 and subsequent conversion to the 5‐substituted 2‐methylcyclopentenecarboxylates 5.

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