7-Hydroxy-1,8-cineole (3a) and the corresponding carboxylic acid (3b) have been isolated from the urine of brushtail possums ( Trichosurus vulpecula: Marsupialia ) fed a diet enhanced with 1,8-cineole. Chemical syntheses of these two novel metabolites are described.

1993 terpenes terpenes U 0200 30 -249 7-Hydroxy-1,8-cineole and 7-Cineolic Acid. Two New Possum Urinary Metabolites. -The title compounds (I) were isolated from the urine of brushtail possums after the animals had a diet enhanced with 1,8-cineole. Chemical syntheses of the novel metabolites are described. -(BULL, S. D.; CARMAN, R. M.; CARRICK, F. N.; KLIKA, K. D.; Aust.