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Tropane Alkaloids of Hyoscyamus boveanus, H. desertorum, H. muticus and H. albus from Egypt
TLDR
39 alkaloids of the tropane and pyrrolidine types, apparently new for the genus Hyoscyamus, were identified and their chemoecological functions discussed. Expand
Terpenoid composition of the wound-induced bark exudate of Commiphora tenuis from Ethiopia.
TLDR
The bark of Commiphora tenuis Vollensen exudes a translucent, free-flowing odoriferous liquid upon wounding which was analysed by capillary GLC and GLC-MS and exhibited antibacterial activities against Staphylococcus aureus. Expand
Pyrrolizidine Alkaloids from Echium rauwolfii and Echium horridum (Boraginaceae)
TLDR
Alkaloid extracts exhibited antibacterial effects with a MIC of 1.7 mg/ml in E. coli treated with different subtoxic alkaloid concentrations (13-52 μg/ml) revealed extensive filamentation. Expand
A phytochemical study of the quinolizidine alkaloids from Genista tenera by gas chromatography-mass spectrometry.
TLDR
Gas chromatography coupled with mass spectrometry has been used to analyse the alkaloids present in the aerial parts of Genista tenera, characterisation of the constituents was based on comparison of their Kovats retention indexes and electron impact-mass spectrometric data recorded on-line with those of reference compounds and literature data. Expand
Chemotaxonomy of Portuguese Ulex: quinolizidine alkaloids as taxonomical markers.
TLDR
Six species of Portuguese Ulex L. in a total of nineteen populations were studied by GC-EIMS as to their content in quinolizidine alkaloids, which allowed the definition of five chemotypes and the recognition of hybrids. Expand
Quinolizidine Alkaloids of Platycelphium vöense (Engl.) Wild (Leguminosae)
TLDR
The rare alkaloid, 6β-hydroxylupanine, was detected only in the leaves while N-ethylcytisine was shown to be a minor constituent of the twigs only. Expand
Quinolizidine alkaloids from the east-african legume Dicraeopetalum stipulare harms
Abstract The alkaloid composition of leaves of Dicraeopetalum stipulare Harms was examined by capillary gas chromatography (GLC) and GLC-mass spectrometry. 5,6-Dehydrolupanine, anagyrine and cytisineExpand
GLC and GLC-MS Analysis of Thiophene Derivatives in Plants and in in vitro Cultures of Tagetes patula L. (Asteraceae)
TLDR
Under in vitro conditions only the root cultures, but not callus or cell suspension cultures produced substantial amounts of irregular thiophenes confirming that roots are the main site of thiophene biosynthesis. Expand
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