## Abstract The xanthone isogentisin and two flavonic heterosides (isocrientin‐4′‐O‐glucoside and isovitexin‐4′‐O‐glucoside) have been isolated from leaves of __Gentiana lutea__ L. by means of column chromatography on polyamide. The determination of the structures and the NMR. spectra of the acetyl
Contribution à la phytochimie du genre Gentiana, XIII. Etude des composés flavoniques et xanthoniques dans les feuilles de Gentiana campestris L. 2ème communication
✍ Scribed by Maryse Kaldas; Kurt Hostettmann; André Jacot-Guillarmod
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- German
- Weight
- 543 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Phytochemistry of genus Gentiana XIII. Study of flavocic and xantonic compounds in the leaves of Gentiana campestris L. 2nd communication.
By means of column chromatography on polyamide, we have isolated from the leaves of Gentiana campestris L. a new xanthone‐O‐glucoside, the 3,4‐dimethoxy‐5, 8‐dihydroxy‐xanthone‐1‐O‐β‐D‐glucopyranoside (2) and its aglucone, the 3,4‐dimethoxy‐1,5,8‐trihydroxy‐xanthone (1). The C‐glucosides mangiferin (3) and swertisin (4) have also been isolated and identified.
📜 SIMILAR VOLUMES
## Abstract One new (**1**) and one previously identified (**2**) flavone‐C‐glycosides were isolated from leaves of __Gentiana verna__ L. by means of column chromatography. The columns used were polyamid and cellulose. The structure of the new compound was established as iso‐orientin‐2″‐O‐glucoside
## Abstract A new xanthone‐O‐glycoside, the 1,7‐dihydroxy‐3‐methoxyxanthone‐8‐O‐β‐D‐glucopyranoside (**7**), has been isolated from the leaves of __Gentiana verna__ L. by means of column chromatography on polyamid. Six known xanthones: 1‐hydroxy‐3,7,8‐trimethoxyxanthone‐1‐O‐primerveroside (**2**);
## Abstract Two new xanthone‐O‐glycoside, the 1,3,5‐trihydroxy‐xanthone‐8‐O‐β‐D‐glucopyranoside (**3**), the 1,5‐dihydroxy‐3‐methoxyxanthone‐8‐O‐β‐D‐glucopyranoside (**4**), have been isolated from the leaves of __Gentiana campestris__ L. by means of column chromatography on polyamid. Two known xan
## Abstract Six polyphenolheterosides have been isolated from the leaves of __G. lutea__ L. by means of thin layer and column chromatography on polyamide. The xanthones mangiferin (III) and gentioside (IV), the flavones isoorientin (V) isovitexin (VI) and two new heterosides (E and F) have been iso
**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′