Diterpenoide Drüsenfarbstoffe: Coleone S und T ausPlectranthus caninusR<scp>OTH</scp>(Labiatae), ein neues Diosphenol/trans-A/B-6,7-Diketon-Paar aus der Abietanreihe

Leaf-gland Pigments: Coleons S and T from Plectranthus caninus ROTH(Labiatae), New Hydroquinones of the Abietane Series with a Diosphenol/trans-A/B-6,7-Diketone Structure. Coleons S and T were isolated from the more polar fractions from extracts of the above mentioned plant. Coleon S, C20H26O6, has been shown to have structure 1a, and coleon T, C20H26O6, structure 2.