Abstract:
:Four Mexican Nymphaea species, N. ampla, N. pulchella, N. gracilis and N. elegans belonging to subgenera Brachyceras were analyzed. In this work two 5-glycosyl isoflavones, 7,3',4'-trihydroxy-5-O-beta-D-(2''-acetyl)-xylopyranosylisoflavone (1) and 7,3',4'-trihydroxy-5-O-alpha-L-rhamnopyranosylisoflavone (2), were isolated from N. ampla and N. pulchella, respectively, together with other known 3-glycosyl flavones and triterpene saponins from the same four species. The structures were elucidated by 1D and 2D NMR, FABMS, and other spectroscopic analyses. These results confirmed that the four species were different from each other and established that N. pulchella represents a different taxa than N. ampla. In addition, the 5-glycosyl isoflavones could be considered as a taxonomic character of this group of plants.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Marquina S,Bonilla-Barbosa J,Alvarez Ldoi
10.1016/j.phytochem.2005.02.027subject
Has Abstractpub_date
2005-04-01 00:00:00pages
921-7issue
8eissn
0031-9422issn
1873-3700pii
S0031-9422(05)00091-9journal_volume
66pub_type
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