科研之友
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摘要
Four ellagic acid derivatives have been isolated from the fruits of Eucalyptus globulus Labill., one of which is new compound, identified as 3-O-methylellagic acid 4'-O-alpha-L-2''-O-acetyl-rhamnopyranoside (1), the known compounds were identified as 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside (2), ellagic acid (3) and 3-0-methylellagic acid (4), on the basis of the analysis of H-1 NMR, C-13 NMR, HSQC, HMBC, IR and MS spectral data. It is also assignment the C-13 NMR signals of 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside for the first.
- 出版日期2005-9
