Academic literature on the topic 'Bioactive Synthesis'

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Dissertations / Theses on the topic "Bioactive Synthesis"

1

Zheng, Zehua. "Synthesis of bioactive natural products." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59815.

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Crude extracts of the rare macrofungus Serpula sp. collected from a wooded area in Sri Lanka showed antimicrobial activity. The novel fungal metabolite serpulanine (2.1) was isolated from the crude extract in very small amounts along with a number of additional secondary metabolites. In order to obtain sufficient quantities of serpulanine (2.1) for biological evaluation, a synthetic route was developed to the natural product and a small library of analogs that have been evaluated in a panel of bioassays. Serpulanine (2.1) inhibits the histone deacetylase I/II with a clear dose response curve.
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2

Nelson, A. "Synthesis of bioactive indolizidine alkaloids." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421009.

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Shan, Yulong. "Bioactive carbohydrates : isolation, synthesis and conjugation." Thesis, Bangor University, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556079.

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In this thesis four projects related to bioactive carbohydrates are described. The first project is about the extraction of iminosugars from Hyacinthoides non-scripta. This is the first time that extraction from English bluebell seeds has been described. Efficient extraction and isolation methods are reported. Another project discusses the development of a total synthetic carbohydrate conjugate vaccine candidate against Streptococcus pneumoniae type 14 using Gold nanoparticles as carrier. The synthetic pathway of the introduction of a linker for conjugation, and the deprotection of the tetrasa
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Carbain, Benoît. "A convenient synthesis of bioactive cyclohexenephosphonates." Thesis, University of Sussex, 2010. http://sro.sussex.ac.uk/id/eprint/2367/.

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Influenza virus infection and the shikimic acid pathway are two of many examples of microbe-host interactions and microbial biosynthetic pathways that are interesting for investigation by means of small molecules. A particularly interesting structural motif common to both is the cyclohexenecarboxylic acid. In the former, this structural motif has been employed as a mimetic of the sialyl cation intermediate and forms the scaffold of the anti-influenza drug and neuraminidase inhibitor Oseltamivir (or TamifluTM). In the latter pathway, crucial modifications towards aromatic amino acids are carrie
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5

Usai, Igor. "Synthesis of novel bioactive doxycycline derivatives." kostenfrei, 2008. http://www.opus.ub.uni-erlangen.de/opus/volltexte/2008/1082/.

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6

Hu, Yaogang. "Design and Synthesis of Bioactive Peptidomimetics." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5504.

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Protein-Protein Interactions (PPIs) play a very important role in biological functions and therefore the inhibition of specific Protein-Protein Interactions has a huge therapeutic value. The most successful small molecular PPIs inhibitors do not fit with the prevalent `Rule of Five' drug profile. To overcome the disadvantages of small molecular PPIs inhibitors, peptide based PPIs inhibitors were developed. Herein we describe the development of a new class of peptidomimetics AA-peptides. The AApeptides were designed based on chiral PNA backbone. Substitution of nucleobases yields AApeptides tha
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7

Tyrrell, Andrew J. "Approaches to the synthesis of bioactive pyrrolizidines." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497131.

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8

Miranda, Vanessa. "Synthesis of new bioactive autoinducer-2 analogues." Doctoral thesis, Universidade Nova de Lisboa, Instituto de Tecnologia Química e Biológica António Xavier, 2019. http://hdl.handle.net/10362/94059.

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" Bacteria behaviours are regulated on a community­wide scale by producing,  secreting,  detecting  and  responding  to  extracellular  small  signaling  molecules  (autoinducers)  that accumulate in the environment in proportion to cell density.  This process is called quorum sensing (QS).  (...)"<br>N/A
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9

Isoni, Valerio. "Asymmetric synthesis of bioactive alkaloids from Amaryllidaceae." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/355712/.

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A new route towards the diasteroselective synthesis of (+)-maritidine, a bioactive alkaloid from Amaryllidaceae, has been proposed. In our approach, an intramolecular Heck reaction was used to form the quaternary stereocentre C10b driven by the stereochemical information at C4a of the precursor. Allylic oxidation of intermediate 3.25 followed by diasteroselective reduction, introduced the alcohol at C3 with the correct stereochemistry. An advanced intermediate (3.29) in the synthesis of (+)-maritidine was produced, and routes to complete the total synthesis were proposed. A series of polymer-s
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10

Soldati, Roberto <1986&gt. "Synthesis of new bioactive β-lactam compounds". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6974/1/Soldati_Roberto_Tesi.pdf.

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New biologically active β-lactams were designed and synthesized, developing novel antibiotics and enzymatic inhibitors directed toward specific targets. Within a work directed to the synthesis of mimetics for RGD (Arg-Gly-Asp) sequence able to interact with αvβ3 and α5β1-type integrins, new activators were developed and their Structure-Activity Relationships (SAR) analysis deepened, enhancing their activity range towards the α4β1 isoform. Moreover, to synthesize novel compounds active both against bacterial infections and pulmonary conditions of cystic fibrosis patients, new β-lactam candidat
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