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Showing 1 to 4 of 4 for “"Aglykon"”.
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Polyenantibiotika aus Streptomyceten : molekularbiologische Untersuchungen zur Biosynthese von Simocyclinon und alpha-Lipomycin
… Glycosyltransferase, welche den Zucker auf das Aglykon überträgt. Mit weiterführenden Experimenten konnte klar gezeigt werden, dass LipDig3 stereospezifisch die 3-Ketogruppe von NDP-3,4-Diketo-2,6-Dideoxy-D-Glucose reduziert. Die Inaktivierung von lipNrps (nicht-ribosomale Peptid-Synthetase), …
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Asymmetrische Synthesen von Attenol A und B 1 (+)-Strictifolion und des 1-epi-Aglycons der Cripowelline A und B
The isomeric polyketides attenol A and B, which were isolated by Suenaga et al. in 1999 from the Chinese bivalve Pinna attenuata, exhibit interesting cytotoxicity against P388 cells. This renders them interesting synthetic targets. We were able to develop a convergent and highly stereoselective …
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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 …
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Ι. ΜΕΛΕΤΗ ΤΩΝ ΧΗΜΙΚΩΝ ΣΥΣΤΑΤΙΚΩΝ ΤΟΥ ΦΥΤΟΥ CISTUS INCANUS SUBSP. CRETICUS (L.) HEYWOOD ΙΙ. ΑΠΟΜΟΝΩΣΗ-ΔΟΜΗ-ΣΥΝΘΕΣΗ ΝΕΟΥ ΦΛΑΒΟΝΟΕΙΔΟΥΣ ΤΟΥ ΦΥΤΟΥ KALANCHOE PROLIFERA R. HAMET
THE LEAVES OF CISTUS INCANUS SUBSP CRETICUS (L.) HEYWOOD COLLECTED IN CRETE ANDSTUDIED IN THE FIRST PART OF THIS THESIS. FROM THE PETROLERUM ETHER EXTRACT AND ETHER EXTRACT SEVEN LABDANE -TYPE DITERPENES HAVE BENEN ISOLATED AND IDENTIFIED. THE STRUCTURES OF ALL THE COMPOUNDS WERE DETERMINED BY MS …