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C‐GLYCOSYLFLAVONES IN THE GNETOPSIDA: A PRELIMINARY REPORT
Author(s) -
Wallace James W.
Publication year - 1979
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1979.tb06233.x
Subject(s) - luteolin , apigenin , biology , botany , flavonoid , glycoside , traditional medicine , biochemistry , antioxidant , medicine
C‐Glycosylflavones appear to be the only detectable flavonoids in representative species of Gnetum, Ephedra and Welwitschia. Ephedra antisyphilitica contains mixed 6,8‐di‐C‐glycosides of apigenin and luteolin and Welwitschia mirabilis produces 6‐C‐glycosylchrysoeriol and 6,8‐di‐C‐glycosylchrysoeriol. Recently it was reported that Gnetum gnemon contains 6‐C‐, 8‐C and 6,8‐di‐C‐glucosyl derivatives of apigenin, luteolin and their 7‐0‐methyl ethers. Based on the present preliminary survey the apparent absence of other flavonoid types indicates that C‐glycosylflavones may be a unifying characteristic of the Gnetopsida.