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Flavonol glycosides from leaves of Costus spiralis
A S Antunes1, B P da Silva, J P Parente
1Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-590, Brazil.
Fitoterapia
|July 17, 2001
Abstract:
A new flavonol diglycoside, 3,5-dihydroxy-7,4'-dimethoxyflavone 3-O-neohesperidoside (1), together with four known flavonol 3-O-neohesperidosides were isolated from the leaves of Costus spiralis and their structures were elucidated by a combination of spectroscopic methods and chemical reactions.