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Biomedical subjects

R Verpoorte

Publications and source records attributed to R Verpoorte.

At least 91 records · Page 5Linked to original sources
PubMed1983

The African Strychnos species and their alkaloids: a review.

A review of the phytochemistry of African Strychnos species and the biological activities of some species as well as of some individual alkaloids isolated from them is presented. Although pharmacological studies of 48 species showed that muscle-relaxant and/or convulsant properties were generally present, antimicrobial, cytotoxic and hypotensive properties among others have also been demonstrated by some of the species and/or alkaloids.

Africa↗
PubMed1983

Screening of antimicrobial activity of some plants belonging to the Apocynaceae and Loganiaceae.

A review is given of the literature on the antimicrobial activity of various indole alkaloids. The data are briefly discussed. A screening was performed of a series of plants belonging to the indole alkaloid rich plant families Apocynaceae and Loganiaceae, 25 materials representing 14 Apocynaceae species and 54 materials representing 41 Strychnos species were investigated. No activity against the yeast or the fungus, used as test organisms was found. A number of extracts showed activity against the gram-positive test organisms, 4 species showed activity against gram-negative bacteria.

Alkaloids↗
PubMed1978

Alkaloids of Strychnos dolichothyrsa Gilg ex Onochie et Hepper.

Three alkaloids of the stem bark of Strychnos dolichothyrsa Gilg ex Onochie et Hepper (Loganiaceae) were isolated and identified as caracurine V and its mono- and di-N-oxide by comparison with synthesized compounds. 13C-NMR was used to confirm the structure of the N-oxides. The muscle relaxant activity and the toxicity of the N-oxides were less than those of caracurine V.

Alkaloids↗