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Showing 1 to 20 of 1341 for “"analogues"”.
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Analogues
Block by block, pixel by pixel, my three dimensional work suggests the framework of the virtual and how it has become increasingly routine to cross its borders. Handheld devices are our tangible windows to the cloud, a reminder that we still reside in a physical world. The use of wood and enamel …
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Synthesis of nucleoside analogues.
A basic introduction to a variety of nucleoside derivatives is described along with a selection of recent syntheses of the said compounds. Initial studies on the synthesis of the key furan based intermediate N-2,5-dihydro-5-(2,2-dimethyl-1,3-dioxolan-4-yl)furanyl trichloroacetamide which when …
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Analogues of Dedekind Sums
In 1877, R. Dedekind introduced the sum$$s(d, c) = \sum\sbsp{j=1}{c}\left(\left({j\over c}\right)\right)\left(\left({dj\over c}\right)\right),$$which appears in the multiplier system of the Dedekind eta-function as a modular form. A century later, B. C. Berndt did analogous work with the classical …
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Recurrences : exploiting naturally occurring analogues
In der vorliegenden Arbeit wird die Wiederkehr im Phasenraum ausgenutzt. Dabei werden drei Hauptresultate besprochen. 1. Die Wiederkehr erlaubt die Vorhersagbarkeit des Systems zu quantifizieren. 2. Die Wiederkehr enthaelt (unter bestimmten Voraussetzungen) sämtliche relevante Information über die …
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Synthesis of thromboxane A2 analogues.
… project was to synthesize novel thromboxane A2 analogues which would be potential thromboxane A2 antagonists. Three thromboxane A2 analogues were synthesized, methyl 7-[-5-(3-hydroxy-1-(E)-octenyl)-2-methylbicyclo[3.3.1]non-2-en-9-yl]-[syn]-(+/-)-5-(Z)-heptenoate, methyl …
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Laminar Analogues of Atmospheric Phenomena
… The main thrust of the work is in using laminar analogues of complex phenomena to aid the understanding of the key physical processes involved. The first portion of the research concerns the dynamics of eyes (regions of reversed flow) at the centres of vortices. We expand upon previous work …
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Synthesis of Novel Cyclobutane Nucleoside Analogues
A synthesis of cyclobutane nucleosides is described. The method involved the triflation of a -hydroxymethyl-cyclobutanone and its subsequent displacement by a 6-chloropurinyl anion to generate N-7 and N-9 regioisomers. The stereoselective reduction of the N-alkylated ketones yielded the …
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Synthesis of novel thyroid hormone analogues
… acid, indicating that the preparation of analogues with the carboxylic acid in alternative positions on the ring may lead to even more potent anti-thyroid drugs.
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Total Synthesis of Apratoxin A Analogues
… has provided us with access to several oxazoline analogues that will be assayed for anti-cancer activity. Also, a second generation synthesis of oxazoline analogues has been developed, which shortens the overall synthetic route and eliminates late stage epimerization problems seen in the original …
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SYNTHESIS OF SOME VITAMIN D ANALOGUES
1. The most fruitful approach to the synthesis of vitamin D secosterols involves functionalisation of existing photolysis steroid of the molecules latter to provitamin D and furnishes the desired secosteroids. Though this approach is shorter than total synthesis, its considerable length and overall …
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Synthesis of Biologically Relevant Sphingolipid Analogues
… of biologically relevant sphingoid and ceramide analogues. In this context, we effected the synthesis of two different classes of sphingolipid analogues. In a first part, we aimed at the synthesis of hybrid PDMP analogues, based both on PDMP and styryl analogues of natural ceramide. Since …
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Synthetic analogues of protein-lipid complexes
… (DLPC) produces polymer-lipid complex analogues to lipoprotein assemblies found in lung surfactant. These complexes represent a new bio-mimetic delivery vehicle with applications in the cosmetic and pharmaceutical industries. The primary aim of this study was to develop a better …
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Defined Dimensional Changes in Purine Analogues
Pyrazolo{4,3-g}quinazolin-5-one (lin-benzoallopurinol), an extended analogue of 4-hydroxypyrazolo{3,4-d}pyrimidine (allopurinol), and pyrazolo{3,4-f}quinazolin-9-one (proxbenzoisoallopurinol), an extended analogue of 7-hydroxypyrazolo{4,3-d}pyrimidine (isoallopurinol), have been synthesized. The …
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Chemical Studies on Nucleic Acid Analogues
Dicarbonyl aldehydes are known to react preferentially with guanine residues in both DNA and RNA; however, the exact structure of the modification product has never been assigned unequivocally as either the "linear" or the "bent" isomer. Accordingly, we have synthesized the products of guanine …
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TISSUE ENGINEERING CELLULARIZED SILK-BASED LIGAMENT ANALOGUES
The resurgence, and eventual rise to prominence in the field of tissue engineering, that electrospinning has experienced over the last decade speaks to the simplicity and adaptability of the process. Electrospinning has been used for the fabrication of tissue engineering scaffolds intended for use …
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Synthesis of gemcitabine and it's tetrafluorinated analogues
… also been developed. Both purine and pyrimidine analogues have been synthesised. The aminoglycosylation methodology has been investigated with a range of amines. The methodology proves high-yielding for primary amines and lesshindered secondary amines. In contrast to expectations, their stability …
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