Isolation of spatulenol and (−)‐caryophyllene oxide from <i>Vernonia mollissima</i> don and ¹H and ¹³C reassignment by two‐dimensional NMR spectroscopy

Abstract

Abstract Two sesquiterpenoids, spatulenol and (−)‐caryophyllene oxide, were isolated from the hexane extract of the Brazilian plant Vernonia mollissima Don. The 1 H and 13 C NMR spectra of these compounds have been reassigned completely by COSY experiments and 13 C/ 1 H shift correlation diagrams.