Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"Crinum"”.
-
Systematic studies in the tribe Amaryllideae (Amaryllidaceae)
… is paraphyletic. The emended Crininae includes Crinum L., Boophane Herbert pro parte, Ammocharis Herbert and Cybistetes Milne-Redhead & Schweickerdt. Strumariinae Traub ex D. & U. Muller-Doblies is incorporated into Amarytlidinae, which now includes Amaryllis L., Nerine Herbert, Brunsvigia …
-
Versuche zur ersten Totalsynthese des Aglycons der Cripowelline A und B und erste asymmetrische Synthese von Tropional
Amaryllidaceae alkaloids - and their subspecies Crinum – are traditional medicinal plants that have also become very important for modern medicine. At Bayer AG in Leverkusen two novel alkaloids – Cripowelline A and B – were isolated from extracts of Crinum powellii. Both alkaloids showed a broad …
-
Asymmetrische Synthesen von Attenol A und B 1 (+)-Strictifolion und des 1-epi-Aglycons der Cripowelline A und B
… which had been isolated from bulbs and roots of Crinum powellii. Their aglycon consists of a [5.3.2]-bicyclic core, an unprecedented structure among the Amaryllidaceae-alkaloids. In addition, both the cripowellins and their aglycon exhibit high insecticidal activity. Our approach yielded the …
-
Isolation, Structure Elucidation, and Total Synthesis of Biologically Active Natural Products from Plants
As a part of the continuing search for bioactive compounds with the Madagascar International Cooperative Biodiversity Group (ICBG), and in collaboration with the Natural Products Discovery Institute of the Institute for Hepatitis and Virus Research (IHVR), thirteen plant extracts were investigated …