Flavonol glycosides from leaves of Costus spiralis.
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.
Antunes
A S
AS
Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-590, Brazil.
da Silva
B P
BP
Parente
J P
JP
D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D006801:Humans; D019684:Magnoliopsida; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves; D010946:Plants, Medicinal
D005419:Flavonoids; D044948:Flavonols; D006027:Glycosides; D010936:Plant Extracts