Chemical Structure of Piericidin A. Part V

Mass Spectrometrical Confirmation for the Side Chain Structure of Piericidin A

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Mass spectra of C₁₁-dioic, C₁₂-dioic and C₁₃-keto acids methyl esters, which are the degradation products of octahydropiericidin A (II), are consistent with the assigned structures, IX, VI and X, respectively. Confirmation for the side chain skeleton of piericidin A (I) is successfully accomplished through mass spectrometry on some derivatives of II.