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Abstract
Eucaglobulin (1), a new complex of gallotannin and monoterpene, was isolated from the leaves of Eucalyptus globulus. Its structure was elucidated on the basis of spectral data. Four known hydrolyzable tannins [tellimagrandin I (2), eucalbanin C (3), 2-O-digalloyl-1,3,4-tri-O-galloyl-β-D-glucose (4), 6-O-digalloyl-1,2,3-tri-O-galloyl-β-D-glucose (5)], as well as gallic acid (6) and (+)-catechin (7), were also isolated. The antibacterial effects of some of these compounds were examined.