[Studies on chemical constituents in fruit of Eucalyptus globulus].

OBJECTIVE: AIM To study the chemical constituents of the fruit of Eucalyptus globulus. METHOD: Various column chromatographies with silica gel were employed for the isolation and purification. The structures of the compounds were elucidated with of spectral analyses and chemical methods. RESULT: Five compounds were isolated and elucidated as follows: betulonic acid (I), betulinic acid (II), ursolic acid (III), corosolic acid (IV), daucosterol (V). CONCLUSION: Compound I, II, III and IV were isolated from this plant for the first time.