Abstract：
:The unique series of C-2''-acylated C-glycosylflavones is extended by the discovery of the C-8-glucosyl derivatives 2''-O-galloylvitexin and 2''-O-galloylorientin and their C-6 analogues 2''-O-galloylisovitexin and 2''-O-galloylisoorientin, representing the first described O-galloyl-C-glycosylflavones. They are accompanied in the aerial parts of Pelargonium reniforme by the known non-galloylated parent analogues vitexin, orientin, isovitexin and isoorientin, as well as several known flavonoid-O-glycosides. The structures of these compounds were established from spectroscopic studies. Differentiation between C-glycosylation at C-6 and C-8 is discussed on the basis of the effects of dynamic rotational isomerism.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Latté KP,Ferreira D,Venkatraman MS,Kolodziej Hdoi
10.1016/s0031-9422(01)00403-4subject
Has Abstractpub_date
2002-02-01 00:00:00pages
419-24issue
4eissn
0031-9422issn
1873-3700pii
S0031942201004034journal_volume
59pub_type
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