Volatiles of the Leaves, Stems and Flowers of Otacanthus azureus (Linden) Ronse

Abstract

The volatiles of the leaves, stems and flowers of Otacanthus azureus were obtained by hydrodistillation and analyzed by GC and GC/MS. The oils of O. azureus were terpenoid in nature. Among the monoterpenes trans-pinocarveol was the major component (leaves: 14.8%, stems: 7.0%, flowers: 2.2%). β-Copaen-4α-ol was the main sesquiterpene found (leaves: 15.6%, stems: 24.3%, flowers 27.4%).