• Publications
  • Influence
Flavonoid and other constituents of Bauhinia manca
Abstract Phytochemical analysis of the stem of Bauhinia manca yielded 63 compounds, among them six new natural products.
Antimalarial compounds from Hoslundia opposita
Three new abietane-type esters isolated from the root bark of the antimalarial plant Hoslundia opposita Vahl inhibit the growth of the multidrug resistant strain K1 of Plasmodium falciparum in vitro with an IC50-value of 0.4 μg ml−1. Expand
The pigments of Brevibacterium linens: Aromatic carotenoids
Abstract The main pigment of Brevibacterium linens is the aromatic carotenoid 3,3′-dihydroxy-isorenieratene (φ,φ-carotene-3,3′-diol). Minor components are the corresponding monohydroxy compound andExpand
Lignans and other constituents from Carissa edulis
Abstract The methanolic extract from the root of Carissa edulis contains ca 5% lignans, the main compounds among them being (−)-nortrachelogenin, carinol and the hitherto unknown carissanol.
Flexirubin-type pigments in Flavobacterium
In an organism regarded as a typical representative of the genus Flavobacterium, flexirubin-type pigments have been identified, and this new observation may indicate that there is a relatively close phylogenetic relationship between this type of flavobacteria and the Cytophaga-Flexibacter group. Expand
Sesquineolignans and other constituents from the seeds of Joannesia princeps.
From the methanolic extract of the seeds of the Brazilian Joannesia princeps 3,3'-bisdemethylpinoresinol and six new sesquineolignans were isolated, a method was developed to distinguish americanol- from isoamericanol-type compounds spectroscopically. Expand
Alkaloids and other compounds from Psychotria correae
From extracts of the leaves and/or the roots of Psychotria correae and the new alkaloids correantoside, 10-hydroxycorreants A to C, and 20-epi-correantine B were isolated, in addition to two cerebrosides and some isoprenoids. Expand
Three flavonoids from the stem bark of the antimalarial Uvaria dependens
Abstract From the chloroform extract of the root bark of Uvaria dependens the three new flavonoids dependensin, 5,7,8-trimethoxyflav-3-ene and 2-hydroxy-3,4
Terpenoids and flavonoids of Bridelia ferruginea
Abstract The terpenoid and flavonoid constituents of the hitherto unexamined medicinal plant Bridelia ferruginea are reported. Quercetin, quercetin 3-glucoside, rutin, myricetin 3-glucoside andExpand