Browsing Fakultät für Chemie (inkl. GAUSS) by Referee "Meijere, Armin de Prof. Dr."
Now showing items 1-16 of 16
-
Beiträge zur Biosynthese der antiparasitären Naturstoffe Hormaomycin und Borrelidin sowie Strukturaufklärung von Sekundärmetaboliten aus Actinomyceten
(2006-11-29)The core of the present thesis deals with studies of the natural products hormaomycin and borrelidin. Furthermore the isolation and structure elucidation of secondary metabolites from ... -
Design und Synthese neuer flüssigkristalliner Substanzen mit zentraler Bicyclo[3.1.0]hexaneinheit
(2003-07-10)Starting from the first observations of the phenomenon of liquid crystallinity by Reinitzer in 1888 and by Lehmann in 1889, the design and preparation of molecules possessing liquid crystalline ... -
Modellsynthesen und Strukturaufklärung von Polyketiden sowie Arbeiten zur Biosynthese von Mimosin
(2001-08-01)The theme of the thesis is model syntheses and structure elucidation of polyketides and investigation of the biosynthesis of Mimosin. The thesis is divided thereby into three sections. The ... -
Neue Übergangsmetall-vermittelte Reaktionen zum effizienten Aufbau cyclopropanhaltiger Oligocyclen
(2004-10-20)The objective of this thesis is the development of new transition metal-mediated reactions for the construction of cyclopropanated oligocycles. In the first part of the thesis, the ... -
One-pot, Two-step Queuing Cascades Involving a Heck Coupling, π-Allylpalladium Trapping and Diels-Alder Reaction
(2006-01-23)In the first part of this study, palladium catalyzed reactions of mono-substituted bicyclopropylidenes (66B E) with iodobenzene (67) in the presence of dienophiles 68a b have been performed. ... -
Palladium-katalysierte Domino-Reaktionen zum Aufbau bi- und tricyclischer Systeme
(2001-08-30)Domino-processes between palladium-catalyzed cross-coupling reactions - Heck-reaction and Enyne-Cycloisomerization - followed by Diels-Alder-reactions have been studied. The ... -
Palladium-katalysierte Kreuzkupplungen zu 1,2-Dialkenylcycloalkenen: Ausgangsstoffe zur Synthese vielfältiger cyclischer Kohlenstoffgerüste
(2001-10-24)Palladium-catalyzed coupling reactions of 1,2-dibromocycloalkenes with styrene and acrylates afforded 1,6-diphenyl- and 1,6-bisalkoxycarbonyl-substituted (E,Z,E)-1,3,5-hexatrienes ... -
Photoaktivierungsfähige Rhodamine als Bio-Calcium-Sensoren und Markierungen für Tetracystein-Tags in Proteinen
(2011-02-25)New xanthenes with differently located azacrown ether residues were conceived and synthesized, and their spectral as well as calcium-binding properties evaluated. Three derivatives with an ... -
Synthese und Untersuchung von Nukleobasen-funktionalisierten Peptiden
(2006-08-17)This thesis dealt with the properties of nucleobase-functionalized peptides. Influences of aromatic sidechains on the structure and aggreagation of peptides could be shown. The knowledge ... -
Synthesis of Potentially Biologically Active Cyclopropane- and Spirocyclopropane-annelated Oligoazaheterocycles
(2004-11-23)In this work the synthesis of new cyclopropane- and spirocyclopropane-annelated heterocyclic compounds containing nitrogen has been reported. The Ti-mediated intramolecular reductive ... -
Synthetisch interessante Transformationen von Ring-anellierten (E,Z,E)-1,3,5-Hexatrienen
(2004-10-05)Twofold palladium-catalyzed coupling reactions (Heck reactions) of 1,2-dibromocycloalkenes with styrene or acrylates afforded 1,6-diphenyl- and 1,6-dialkoxycarbonyl-substituted ... -
VERSUCHE ZUR SYNTHESE VON PROTOILLUDAN-SESQUITERPENEN ÜBER UMLAGERUNGSREAKTIONEN: (±)-CERAPICOL, (±)-STERPUREN UND (±)-CERATOPICANOL
(2002-12-19)The protoilludane-sesquiterpene family shows a large number of structural varities. It originates from the protoilludyl-cation 4, which was formed by the cyclization of humulene. The majority ... -
Zur sequentiellen Umwandlung von Bicyclobutylidenen in Bicyclooctene: Synthese und Umlagerung funktionalisierter Spiro[3.4]octane
(2001-08-07)This dissertation deals with the synthetic potential of sequential transformation of bicyclobutylidene derivatives to bicyclo[3.3.0]octenes. For that reason bicyclobutylidene is first ... -
β-Aminosubstituted α,β-Unsaturated Fischer Carbene Complexes as Precursors for Complex Oligocyclic Molecules - Basics and Applications
(2005-01-24)Under the optimized conditions, a wide range of β-Aminosubstituted α,β-unsaturated Fischer carbene complexes were easily prepared in a four-step one-pot operation. Reaction of Fischer ...