A NEW LIGNAN FROM THE PATAGONIAN VALERIANA CARNOSA Sm

in addition to the known caffeoyl methyl ester, two pinoresinol type lignans were isolated from the whole plant of valeriana carnosa sm. one of these metabolites is 1-hydroxypinoresinol (1), which has previously been isolated from the genera olea and fraxinus. the other one (2) was identified as a novel compound and was characterised by using 1h (including noe experiments), and 13c-nmr spectroscopic techniques and mass spectrometry.