Structure of a new phenol aldehyde from the leaves of Eucalyptus viminalis

A new terpenoid phenol aldehyde has been isolated from an alcoholic extract of the leaves of the ribbon eucalyptus by column chromatography on silica gel, and on the basis of the results of¹H and¹³C NMR spectroscopy and mass spectrometry the structure of 4-1-(3,5-diformyl-2,4,6-trihydroxyphenyl)-3-methylbutyl]-ledol is proposed for it. The relative configurations of the substituents in the terpenoid moiety of the molecule have been determined. All-Union Scientific-Research Institute of Medicinal Plants and Production Association, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 789–795, November–December, 1991.