Alkaloids from Lupinus argenteus var. stenophyllus.
TLC and GLC of an alkaloid extract of the aboveground portions of Lupinus argenteus Pursh. var. stenophyllus (Rydb.) Davis (Leguminosae) suggested the presence of sparteine, beta-isosparteine, delta5-dehydrolupanine, alpha-isolupanine, lupanine, thermopsine, and anagyrine. GLC-mass spectrometry confirmed these preliminary findings. Preparative TLC was used to isolate sparteine, and this alkaloid was further characterized by IR spectral analysis and derivatization.
Toxic constituents of legume forage plants
In this review, the toxic and antinutrient compounds biosynthesized by legumes used as forage crops in the United States are described under the categories alkaloids, amino acids, cyanogens, isoflavone and coumestan estrogenic principles, nitro compounds, protease inhibitors, phytohemagglutinins, saponins, selenium compounds and tannins. The legume-related livestock conditions, bloat, locoweed poisoning and photodermatitis are also discussed. Relevant veterinary, phytochemical and toxicological literature citations are presented.
The guaianolides of ambrosia cumanensis HBK : The structures of cumambrins A and B☆
Abstract Cumambrins A and B isolated from Ambrosia cumanensis HBK were shown to be guaianolides with structures Ia and Ib.