Studies on chemical constituents in fruits of Eucalyptus globulus / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents in the fruits of Eucalyptus globulus Labill.</p><p><b>METHOD</b>The chemical constituents were isolated by various column chromatographic methods and structurally elucidated by IR, NMR and MS evidences.</p><p><b>RESULT</b>Fifteen compounds were obtained and identified as beta-sitosterol (1), betulinic acid (2), stigmasterol (3), euscaphic acid (4), 2a-Hydroxybetulinic acid (5), macrocarpal B (6), macrocarpal A (7), oleanolic acid (8), 3,4,3'-O-trimethylellagic acid (9), 3-O-methylellagic acid 4'-O-(2"-O-acetyl )-alpha-L-rhamnopyranoside (10), camaldulenside (cypellocarpin C, 11), 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside (12), 3-O-methylellagic acid (13), ellagic acid (14), and gallic acid (15).</p><p><b>CONCLUSION</b>Compounds 4 and 5 from genera Eucalyptus, 1, 3 and 11 from plant E. globulus, and 6, 7, 9 and 15 from the fruits of E. globulus were isolated for the first time.</p>