Journal ArticleDOI
Prenylated xanthones from cell suspension cultures of Hypericum patulum
TLDR
A new xanthone named demethylpaxanthonin, 1,2,5,6,tetrahydroxy-2-2′,2′-dimethyl-4′-isopropenyl)-cyclopentanyl-xanthen-9-one, has been isolated from the callus tissues of Hypericum patulum together with the known compounds padiaxanthone and tripteroide.About:
This article is published in Phytochemistry.The article was published on 1997-03-01. It has received 29 citations till now. The article focuses on the topics: Xanthone.read more
Citations
More filters
Journal ArticleDOI
Tetraoxygenated naturally occurring xanthones
Valdir Peres,Tanus Jorge Nagem +1 more
TL;DR: This review, with 350 references, gives information on the chemical study of 234 naturally occurring tetraoxygenated xanthones in 12 families, 53 genus and 182 species of higher plants, and two which are described as fungal and lichen metabolites.
Journal ArticleDOI
Xanthones from Hypericum japonicum and H. henryi.
TL;DR: From the aerial part of Hypericum japonicum, one new xanthone glycoside, 1,5-dihydroxyxanthone-6-O-beta-D-glucoside, and one novel dimer xanth one, bijaponicaxanthone, were isolated together with the four known xanthones.
Journal ArticleDOI
Unusual flavonoids produced by callus of Hypericum perforatum
Alberto Carlos Pires Dias,Francisco A. Tomás-Barberán,Manuel Fernandes-Ferreira,Federico Ferreres +3 more
TL;DR: 6-C-prenyl luteolin, a new naturally occurring compound, together with lutesin 5,3′-dimethyl ether, luteol 5-glucoside and luteolic acid are isolated from callus of Hypericum perforatum var.
Journal ArticleDOI
Prenylated xanthone derivatives with antiplasmodial activity from Allanblackia monticola STANER L.C.
Anatole Guy Blaise Azebaze,Michele Meyer,Alexis Valentin,Edwige Laure Nguemfo,Zacharias Tanee Fomum,Augustin Ephrem Nkengfack +5 more
TL;DR: The methanol extract and pure compounds were tested on two strains of Plasmodium falciparum, F32 ( chloroquine sensitive) and FcM29 (chloroquine resistant) and the IC50 values obtained ranged from 0.6 to 8.9 microg/ml.
Journal ArticleDOI
Composition and antimicrobial activity of the essential oil of Hypericum rumeliacum subsp. apollinis (Boiss. & Heldr.)
TL;DR: The essential oil showed a moderate in vitro activity against the six Gram negative and positive bacteria and a stronger one against the three‐tested pathogenic activity.
References
More filters
Journal ArticleDOI
The structures of garcinones a, b and c: Three new xanthones from Garcinia mangostana
Ashis K. Sen,Kalyan K. Sarkar,Pronobesh C. Mazumder,Nilima Banerji,Raimo Uusvuori,Tapio A. Hase +5 more
TL;DR: In this article, three new tetraoxygenated xanthones (garcinones A, B and C), each disubstituted with C5-units, have been isolated from the chloroform extract of the fruit hulls of Garcinia mangostana.
Journal ArticleDOI
Minor xanthones from the bark of cratoxylum cochinchinense
TL;DR: In this paper, three new xanthone derivatives, 11-hydroxy-1-isomangostin, a xanthonolignoid (5′-demethoxycadensin G) and a bisxanthone, as well as the known compound 1,3,5,6-tetrahydroxyxanthones, were isolated from the bark of Cratoxylum cochinchinense.
Journal ArticleDOI
Xanthones in cell suspension cultures of Hypericum paturum
TL;DR: A new xanthone named paxanthone, 9,11-dihydroxy-5-methoxy-3,3-dimethylpyrano[3,2-a]xanthen-12(3H)-one, has been isolated from the callus tissues of Hypericum paturum together with toxyloxanthone B and γ-mangostin.
Journal ArticleDOI
Co-occurrence of prenylated xanthones and their cyclization products in cell suspension cultures of Hypericum patulum
TL;DR: A new xanthone named paxanthone B, 5,9,11-trihydroxy-3,3-dimethyl-8-(3-methyl-2-butenyl)-3H,12H-pyrano[3,2-a]xanthen-12-one, has been isolated from callus tissues of Hypericum patulum, together with the known garcinone B and 1,3,6,7-tetrahydroxy-8-methyl)-9H-xanthens-9-one RE