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Contribution à la phytochimie du genre Gentiana. XXV. Etude des composés flavoniques et xanthoniques dans les feuilles de Gentiana X marcailhouana RY. Nouveaux cinnamoyl-C-glucosides flavoniques

✍ Scribed by Par Minh Duc Luong; Pierre Fombasso; André Jacot-Guillarmod

Publisher
John Wiley and Sons
Year
1980
Tongue
German
Weight
294 KB
Volume
63
Category
Article
ISSN
0018-019X

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✦ Synopsis

Phytochemistry of genus Gentiana XXV: Study of the flavonic and xanthonic compounds in leaves of Gentiana X marcailhouana RY. New cinnamoyl‐C‐glucosyl‐flavones

Nine flavonic compounds: isoorientin (1), isovitexin (2), isoorientin‐4′‐O‐β‐D‐glucoside (3), isovitexin‐4′‐O‐β‐D‐glucoside (4), luteolin‐7‐O‐β‐D‐glucoside (5), trans‐cafeoyl‐2′′‐isoorientin (6), trans‐feruloyl‐2′′‐isoorientin (7), trans‐p‐coumaroyl‐2′′‐isoorientin (8), p‐O‐β‐D‐glucosyl‐trans‐cafeoyl‐2′′‐isoorientin (9) and three xanthones: gentioside (10), isogentisine (11), mangiferin (12), have been identified from leaves of Gentiana X marcailhouana RY. Compounds 8 and 9 were described for the first time. The cyclitol L‐(+)‐bornesitol (13) has been also isolated.

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**Phytochemistry of Genus __Gentiana__. XXVI. Identification of a New Di‐__O__‐glucosyl Cinnamoyl‐__C__‐glucosylflavone in the Leaves of __Gentiana X marcailhouana__ RY.** A new di‐__O__‐glucosyl cinnamoyl‐__C__‐glucosylflavone has been identified as 4′‐__O__‐β‐D‐glucosyl‐2″‐__O__‐[2‐__O__‐β‐D‐gluc