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.
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Showing 1 to 8 of 8 for “"tropolone"”.
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Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands
Previous work on crystal field aspects of the vibrational spectra of metal β-ketoenolates has been extended here to metal tropolonate complexes. The crystal field trends have been used to assist in the assignment of metal sensitive vibrations to the transition metal tropolonate complexes. A study …
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Synthesis of sesquiterpene-tropolones
… synthesis of the multi-bioactive sesquiterpene-tropolone natural products has been developed in an effort to provide general synthetic access to this class of compounds and related structures. In this work, the convergence of the sesquiterpene and tropolone fragments is enabled by a …
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Studies on the Synthesis, Function, and Properties of Troponoids
… crucial deficiencies in our understanding of tropolone structural properties, necessary to the efficient development of troponoid based therapeutics.</p> <p>Chapter 2 describes our efforts in understanding troponoid atropisomerism – probing the limits of the stabilizing influence of the …
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Synthesis of anticancer agents: 15-deoxy-15-fluoro-Δ12-prostaglandin J3 and gukulenin monomeric units
… Chapter 2 describes our synthesis toward bis-tropolone cytotoxin gukulenin A. Historically, tropolone and its derivatives have been studied for their antitumor effects; and, as potent metal chelators, these aromatic structural motifs also carry great potential in material science and ligand …
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Homing of 111In-Labeled Bone Marrow Mesenchymal Stem Cells in Acute Brain Trauma Model
… (BMSCs) in an acute brain trauma model by 111In-tropolone labeling and to perform the effect of 111In-labeling on the viability and functions of BMSCs. Rat BMSCs were labeled with 37 MBq 111In-tropolone. Their labeling efficiency and in vitro retention rate were measured. To evaluate …
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Studies Toward a General Synthesis of Poly-Substituted Alpha-Hydroxytropolones
… This chapter gives a brief history of α-hydroxytropolones, how they were discovered and unique properties of these substrates. Included is a background on the bioactivity of these substrates in cellular targets such as bacteria, fungi, parasites, tumors and toxicity, as well as their ability to …
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Improving the measurement of butyltin compounds in environmental samples
… hexane/acetic acid extraction was employed of tropolone complexes of the organotin compounds. Grignard reagent derivatization and measurements by gas chromatography with pulsed flame photometric detection were then employed. The TBT detection limit of 5 ?g Sn/ kg in sediment was below the UK …
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AN INVESTIGATION OF THE FEASIBILITY OF BIOMETHYLATION FOR GROUP IV METALS AND COMPOUNDS
… of trimethyl tin species on the oxo-ligand tropolone suggests that oxygen and sulphur ligands in the environment will play a part in the volatilisation and cycling of tin in the environment. From incubations of deuterated trimethyltin species in a number of sediment samples only fully …