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Habropetaline A, an antimalarial naphthylisoquinoline alkaloid from Triphyophyllum peltatum.
The isolation, structural elucidation, and antiprotozoal activities of habropetaline A, a novel naphthylisoquinoline alkaloid from Triphyophyllum peltatum, are described. This alkaloid had previouslyExpand
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HPLC−CD On-Line Coupling in Combination with HPLC−NMR and HPLC−MS/MS for the Determination of the Full Absolute Stereostructure of New Metabolites in Plant Extracts
The applicability of on-line coupling of gradient eluted nonchiral reversed-phase high-pressure liquid chromatography (HPLC) to circular dichroism (CD) spectroscopy for the stereochemical analysis ofExpand
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Ancistrocongolines A-D, new naphthylisoquinoline alkaloids from ancistrocladus congolensis.
Four new naphthylisoquinoline alkaloids, ancistrocongolines A-D (4-7) were isolated from Ancistrocladus congolensis, along with the known compound korupensamine A (8). Structural elucidation wasExpand
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Dioncophylline E from Dioncophyllum thollonii, the first 7,3'-coupled dioncophyllaceous naphthylisoquinoline alkaloid.
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 anExpand
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The absolute configuration of (+)-isoshinanolone and in situ LC-CD analysis of its stereoisomers from crude extracts.
The absolute configuration of (+)-isoshinanolone, a wide-spread acetogenic metabolite from higher plants, has been determined by X-ray structure analysis of its new dibromide; accordingly, thisExpand
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Cis- and trans-isoshinanolone from Dioncophyllum thollonii : absolute configuration of two 'known', wide-spread natural products
Abstract From the rare West African liana, Dioncophyllum thollonii (Dioncophyllaceae), the known acetogenic tetralones, cis - and trans -isoshinanolone, were isolated. Exemplarily on this material, aExpand
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Elucidation of the absolute configuration of knipholone and knipholone anthrone by quantum chemical CD calculations
The absolute configuration of knipholone, an axially chiral phenylanthraquinone from Kriphofia, Bulbine, and Bulbinella species, has been established as M by quantum chemical CD calculations. ForExpand
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Jozipeltine A, a Novel, Unnatural Dimer of the Highly Hydroxylated Naphthylisoquinoline Alkaloid Dioncopeltine A
Abstract The synthesis of jozipeltine A (5), the 6′-coupled constitutionally symmetric dimer of the highly antimalarial naphthylisoquinoline alkaloid dioncopeltine A (4), is described. AfterExpand
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The absolute configuration of (+)-isoshinanolone and in situ LC-CD analysis of its stereoisomers from crude extracts.
The absolute configuration of (+)-isoshinanolone, a wide-spread acetogenic metabolite from higher plants, has been determined by X-ray structure analysis of its new dibromide; accordingly, thisExpand
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Murrastifoline-F: first total synthesis, atropo-enantiomer resolution, and stereoanalysis of an axially chiral N,C-coupled biaryl alkaloid.
The first total synthesis of the Murraya alkaloid murrastifoline-F (3), an unsymmetric, N,C-bonded heterobiarylic biscarbazole, is described. Starting from the likewise naturally occurring-but hereExpand
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