Abstract

AbstractA short enantioselective synthesis of phoracantholide I [(R)‐4] (ee = 91 %), a component of the defensive secretion of the eucalypt longicorn Phoracantha synonyma, is described. Key steps of the synthesis are the enantioselective α‐alkylation of cyclononanone SAMP hydrazone [(S)‐1] (de > 93%) and subsequent Baeyer‐Villiger reaction of the ketone (R)‐3 with retention of configuration.

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