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triphyophyllum/alkaloid

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ArtykułyBadania klinicznePatenty
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The isolation and structural elucidation of a new naphthylisoquinoline alkaloid, 8-O-methyldioncophyllinol B, from Triphyophyllum peltatum (Hutch. et Dalz.) Airy Shaw (Dioncophyllaceae) is described, together with the revised structures of other 'B-type' compounds previously misidentified as
Extracts from three tropical medicinal plant species belonging to the Dioncophyllaceae (Triphyophyllum peltatum) and the Ancistrocladaceae (Ancistrocladus abbreviatus and Ancistrocladus barteri), and pure naphthylisoquinoline alkaloids derived from these species have been examined for the first time

Larvicidal activity of the naphthylisoquinoline alkaloid dioncophylline A against the malaria vector Anopheles stephensi.

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The larvicidal activity of dionocophylline A, a naphthylisoquinoline alkaloid derived from the tropical vine Triphyophyllum peltatum (Dioncophyllaceae), was investigated against the malaria vector Anopheles stephensi. In direct and indirect inhibition assays it was demonstrated that the younger

Naphthylisoquinoline alkaloids and their synthetic analogs as potent novel inhibitors against Babesia canis in vitro

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Babesia canis is the predominant and clinically relevant canine Babesia species in Europe. Transmitted by vector ticks, the parasite enters red blood cells and induces a severe, potentially fatal hemolytic anemia. Here, we report on the antibabesial activities of three extracts of the West African

5'-O-demethyldioncophylline A, a new antimalarial alkaloid from triphyophyllum peltatum.

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From the root bark of Triphyophyllum peltatum, the new naphthylisoquinoline alkaloid 5'-O-demethyldioncophylline A has been isolated. Its otherwise difficult separation from the largely dominating main alkaloid, dioncophylline A, was greatly facilitated by a bromination-benzylation procedure. From
UV resonance Raman microspectroscopy was applied for a localization of the antiplasmodial naphthylisoquinoline alkaloid dioncophylline A in very low concentrations in different parts of the samples (e.g., in the roots) of the tropical liana Triphyophyllum peltatum. The application of resonance Raman
Near infrared Fourier transform (NIR FT) micro Raman spectroscopy in combination with density functional theory (DFT) calculations has been applied for an in vivo localization of the antiplasmodial naphthylisoquinoline alkaloid dioncophylline A (1) in the tropical liana Triphyophyllum peltatum.

Dioncophylline E from Dioncophyllum thollonii, the first 7,3'-coupled dioncophyllaceous naphthylisoquinoline alkaloid.

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The isolation and structural elucidation of dioncophylline E, a novel naphthylisoquinoline alkaloid from the rare West African liana Dioncophyllum thollonii, is described. The alkaloid displays an unusual 7,3'-linkage between the naphthalene and the isoquinoline portions. Due to the resulting medium

Molluscicidal activity of naphthylisoquinoline alkaloids from Triphyophyllum and Ancistrocladus species.

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The naphthylisoquinoline alkaloids dioncophylline A (1) and 5'-O-demethyl-8-O-methyl-7-epi-dioncophylline A (2) represent a new structural type of molluscicidal compounds and the active principle of extracts of the tropical lianas Ancistrocladus abbreviates and Triphyophyllum peltatum. The activity

Habropetaline A, an antimalarial naphthylisoquinoline alkaloid from Triphyophyllum peltatum.

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The isolation, structural elucidation, and antiprotozoal activities of habropetaline A, a novel naphthylisoquinoline alkaloid from Triphyophyllum peltatum, are described. This alkaloid had previously only been identified on line, by the LC-MS/MS-NMR-CD triad, in the crude extract of the rare and
Naphthylisoquinoline alkaloid-containing extracts from species of the families Dioncophyllaceae and Ancistrocladaceae and purified alkaloids derived therefrom were shown to exhibit antiparasitic activity in Plasmodium berghei-infected mice. Several extracts and alkaloids, especially dioncophylline C
Peroxidase active preparations from three Ancistrocladus species and from Triphyophyllum peltatum have been partially purified. They catalyze the oxidative dimerization of korupensamines A and B to michellamines A and C, respectively, as well as the mixed coupling to michellamines A, B, and C. All

Axially Chiral Dimeric Naphthalene and Naphthoquinone Metabolites, from Root Cultures of the West African Liana Triphyophyllum peltatum.

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Root cultures of the West African liana Triphyophyllum peltatum were initiated from stem explants of in vitro cultivated shoots. From these organ cultures, three new binaphthalenes, one binaphthoquinone, and two (bi)naphthalene glucosides were isolated, with substitution patterns related to those of
Retarded development of exoerythrocytic stages of the rodent malaria parasite Plasmodium berghei in human hepatoma cells by extracts from Dioncophyllaceae and Ancistrocladaceae species. International Journal for Parasitology 27: 29-32. Naphthylisoquinoline alkaloid-containing extracts (10 micrograms

Droserone from cell cultures of Triphyophyllum peltatum (Dioncophyllaceae) and its biosynthetic origin.

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The growth and droserone content of callus cultures of Triphyophyllum peltatum grown in liquid 1/5 Linsmaier and Skoog medium was studied. During a lag phase in growth, droserone concentrations in the medium reached a value of 2.1 mg g-1 fr. wt. After this maximum value the concentration decreased
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