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Contribution à la phytochimie du genre Gentiana. II. Etude des cyclitols dans les feuilles de Gentiana lutea L.

✍ Scribed by Günter Bellmann; André Jacot-Guillarmod


Publisher
John Wiley and Sons
Year
1973
Tongue
German
Weight
186 KB
Volume
56
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

L‐(+)‐bornesitol has been isolated from the leaves of G. lutea L. in the proportion of 1,6% by weight of dried material. Meso‐inositol has also been detected by chromatography. Distribution of L‐(+)‐bornesitol and its taxonomic interest are discussed.


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Contribution à la phytochimie du genre G
✍ Kurt Hostettmann; Rafaël Tabacchi; André Jacot-Guillarmod 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 499 KB

## Abstract Ten tetraoxygenated xanthones (1‐hydroxy‐3, 7, 8‐trimethoxyxanthone I; 1, 7‐dihydroxy‐3, 8‐dimethoxyxanthone II; 1, 7, 8‐trihydroxy‐3‐methoxyxanthone III; 1, 3, 7, 8‐tetrahydroxyxanthone IV; 3, 7, 8‐trimethoxyxanthone‐1‐O‐primeveroside V; 7‐hydroxy‐3, 8‐dimethoxyxanthone‐1‐O‐primeverosi

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## 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

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## 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

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## 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**);

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Contribution à la phytochimie du genre G
✍ Maryse Kaldas; Kurt Hostettmann; André Jacot-Guillarmod 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 315 KB

## 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