3.1. Structure elucidation of new compounds
A sample, chosen among those exhibiting the higher yields
of essential oil as well as the higher contents of unidentified
compounds A and B was repeatedly chromatographed over silica
gel column in order to purify these compounds. Compounds
A and B were found into two different fractions of CC and their
structural elucidation was achieved using a full set of two dimensional
NMR experiments.