Littérature scientifique sur le sujet « Non-natural reactions »
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Articles de revues sur le sujet "Non-natural reactions"
SAIGO, Kazuhiko, Atsushi SUDO et Yukihiko HASHIMOTO. « Asymmetric Reactions Using Non-natural Chiral Auxiliaries. » Journal of Synthetic Organic Chemistry, Japan 56, no 5 (1998) : 386–94. http://dx.doi.org/10.5059/yukigoseikyokaishi.56.386.
Texte intégralHarms, Vanessa, Andreas Kirschning et Jeroen S. Dickschat. « Nature-driven approaches to non-natural terpene analogues ». Natural Product Reports 37, no 8 (2020) : 1080–97. http://dx.doi.org/10.1039/c9np00055k.
Texte intégralHyster, Todd K. « Radical Biocatalysis : Using Non-Natural Single Electron Transfer Mechanisms to Access New Enzymatic Functions ». Synlett 31, no 03 (7 mai 2019) : 248–54. http://dx.doi.org/10.1055/s-0037-1611818.
Texte intégralHyster, Todd K., et Thomas R. Ward. « Genetic Optimization of Metalloenzymes : Enhancing Enzymes for Non-Natural Reactions ». Angewandte Chemie International Edition 55, no 26 (11 mars 2016) : 7344–57. http://dx.doi.org/10.1002/anie.201508816.
Texte intégralGober, Joshua G., et Eric M. Brustad. « Non-natural carbenoid and nitrenoid insertion reactions catalyzed by heme proteins ». Current Opinion in Chemical Biology 35 (décembre 2016) : 124–32. http://dx.doi.org/10.1016/j.cbpa.2016.09.004.
Texte intégralWang, Zhipeng A., Yan-Yu Liang et Ji-Shen Zheng. « Reductive Amination/Alkylation Reactions : The Recent Developments, Progresses, and Applications in Protein Chemical Biology Studies ». Current Organic Synthesis 15, no 6 (29 août 2018) : 755–61. http://dx.doi.org/10.2174/1570179415666180522093905.
Texte intégralTaylor, James S., et Yung-Hian Leow. « Cutaneous Reactions to Rubber ». Rubber Chemistry and Technology 73, no 3 (1 juillet 2000) : 427–85. http://dx.doi.org/10.5254/1.3547600.
Texte intégralXu, Guangcai, Michele Crotti, Thangavelu Saravanan, Kim M. Kataja et Gerrit J. Poelarends. « Enantiocomplementary Epoxidation Reactions Catalyzed by an Engineered Cofactor‐Independent Non‐natural Peroxygenase ». Angewandte Chemie 132, no 26 (14 avril 2020) : 10460–64. http://dx.doi.org/10.1002/ange.202001373.
Texte intégralXu, Guangcai, Michele Crotti, Thangavelu Saravanan, Kim M. Kataja et Gerrit J. Poelarends. « Enantiocomplementary Epoxidation Reactions Catalyzed by an Engineered Cofactor‐Independent Non‐natural Peroxygenase ». Angewandte Chemie International Edition 59, no 26 (14 avril 2020) : 10374–78. http://dx.doi.org/10.1002/anie.202001373.
Texte intégralFu, Peng, et John B. MacMillan. « Carpatizine, a novel bridged oxazine derivative generated by non-enzymatic reactions ». Organic & ; Biomolecular Chemistry 15, no 25 (2017) : 5275–78. http://dx.doi.org/10.1039/c7ob01178d.
Texte intégralThèses sur le sujet "Non-natural reactions"
Lee, Albert. « Synthesis of polyurethane from one hundred percent sustainable natural materials through non-isocyanate reactions ». Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53038.
Texte intégralZAMBERLAN, Francesco. « Synthesis and biological applications of non natural α-amino acids ». Doctoral thesis, Università degli studi di Ferrara, 2013. http://hdl.handle.net/11392/2388868.
Texte intégralStafford, Petra M. « Approaches to the synthesis of non-natural carbohydrates via silicon tethered ene and allyl transfer reactions ». Thesis, University of Oxford, 2004. http://ora.ox.ac.uk/objects/uuid:b1ea3f8b-6a69-443d-8171-0ffd1cc37b45.
Texte intégralLarsen, Catharine Hoang-Mai MacMillan David W. C. Barton Jacqueline K. « Investigating imidazolidinone catalysts : enantioselective organocatalytic Diels-Alder reactions, conjugate additions to access non-natural alpha-amino acids, and bimodal catalyst activation for the development of organo-cascade reactions / ». Diss., Pasadena, Calif. : California Institute of Technology, 2006. http://resolver.caltech.edu/CaltechETD:etd-10142005-105810.
Texte intégralPujol, Manon. « Ingénierie de métalloenzymes pour la catalyse abiologique ». Electronic Thesis or Diss., Aix-Marseille, 2023. http://theses.univ-amu.fr.lama.univ-amu.fr/230310_PUJOL_718skm30lico606bv439mbsvs_TH.pdf.
Texte intégralIn the context of sustainable development, chemical industries turn progressively towards processes respecting the criteria of green chemistry, via for example the replacement of chemical catalysts by enzymes. However, lots of industrial reactions do not exist in nature. To over come this limitation, several hemoproteins have been engineered to catalyze abiological reactions. Besides, only few non-heme iron-dependent enzymes and one cobalt protein were also reported for carbene and nitrene transfers whereas other metals catalyze them. We first aimed to repurpose the activity of a class of copper metalloenzymes, the lytic polysaccharide monooxygenases (LPMOs), to develop new biocatalysts for new-to-nature reactivities. To repurpose the LPMO activity, the copper coordination sphere within the SmAA10 LPMO was modulated by site directed mutagenesis to create new metal coordination motifs. The mutants were characterized and were then assessed for their capacity to catalyze non-natural reactions. Good activities were obtained for some abiological transformations (i.e. : the Doyle-Kirmse rearrangement). These activities being similar to that of copper in solution, we wondered if the reactions were really catalyzed at the enzyme active site. Focusing on the Doyle-Kirmse rearrangement, we found no evidence that the wild-type LPMO significantly loses some copper. In contrast, we high light the carbene addition to an active site residue to a specific LPMO mutant, resulting in its copper release. Next, we extended the non-natural reactions range catalyzed by hemoproteins by performing for a Sommelet-Hauser rearrangement with an evolved myoglobin
Bull, Joseph. « The application of hydrolytic enzymes for biotransformations of natural products in non-aqueous reaction conditions ». Thesis, University of Exeter, 2009. http://hdl.handle.net/10036/76873.
Texte intégralILLUMINATI, Davide. « Exploring the potential of Pd-catalyzed C-H activation reaction for the synthesis of non-natural amino acid 2,6-dimethyl tyrosine-like (Dmt-like) analogues ». Doctoral thesis, Università degli studi di Ferrara, 2022. http://hdl.handle.net/11392/2478825.
Texte intégralThe opioid system is involved in the modulation of multiple biological functions, above all pain behavior. It consists of four different families of opioid receptors known as MOP, KOP, DOP and NOP. All of these are Gi/G0 protein coupled receptors expressed throughout the spinal axis and pain related pathways. The activation of these receptors induces cell hyperpolarization and ion channels opening, regulating the release of second messengers and promoting signaling cascades which converge to cell desensitization, analgesia. The most potent analgesic effect is known to be exerted by the activation of MOP receptor, unfortunately it is associated to important side effects which represent the major limitation for their clinical use, such as constipation, cough, itch, respiratory depression, tolerance and addiction. While the co-activation of different receptor subtypes is emerging as a safer therapeutic strategy to promote analgesia. The simultaneous activation of MOP and NOP receptors has been suggested as an interesting pharmacological approach to treat pain with potentially reduced side effects. Dual MOP/NOP ligands have been obtained through subtle changes of the N-terminal part of Nociceptin/Orphanin FQ (N/OFQ). The most important substitution which confers such interesting behavior is the replacement of the phenylalanine residue at the N-terminal position (Phe1) of N/OFQ with the non-canonical amino acid 2,6-dimethyl tyrosine (Dmt). Of note, some Dmt-modified opioid peptides exhibited increased biological activity and extended half-life with unexpected affinity and selectivity patterns. This thesis has been focused on the development of different synthetic strategies for the synthesis of Dmt-like analogues. In particular, we were able to functionalize the 4-position of the phenyl ring of the target residues after an ortho-ortho C(sp2)-H alkylation reaction. Some of these analogues were successfully employed as building blocks in solid phase peptide synthesis (SPPS) for the synthesis of N/OFQ(1-13)-NH2 derivatives modified at the message domain. Moreover, Pd-catalyzed C(sp2)-H activation was successfully applied for the synthesis of the non-natural amino acid mono methyl tyrosine (Mmt) in which 3-nitro-L-tyrosine was employed as starting material. Another Pd-catalyzed synthesis here described is focused on a beta C(sp3)-H activation of a properly functionalized alanine precursor which led to the obtainment of 3,5-Dmt, as well as bis-arylated analogues of Tyr and 3,5-Dmt. This thesis work includes a strategy for assembling bifunctional (NOP/MOP) heterotetrabranched ligands. Peptide clustering is emerging as an innovative tool to enhance the pharmacokinetic profile of therapeutic peptides, particularly by increasing their half-life. Specifically, we synthesized the heteromultimeric peptide conjugate H-PWT1-N/OFQ-[Dmt1]dermorphin (Scheme 4) to target NOP and MOP opioid receptors, observing similar and high agonist potency compared to the parent peptides. The synthetic approach is extremely versatile and virtually applicable to different peptide sequences whose pharmacological activity could be combined to generate dual acting multimeric compounds. Finally, with the aim to identify novel mixed NOP/opioid receptor peptide agonists, Dmt was employed as Fmoc-precursor in SPPS to build a series of linear peptides with the general sequence [Tyr/Dmt1,Xaa5]N/OFQ(1-13)-NH2. The best results in terms of NOP versus MOP opioid receptor potency were obtained by substituting both Tyr1 and Thr5 at the N-terminal portion of N/OFQ(1-13)-NH2 with Dmt. [Dmt1,5]N/OFQ(1-13)-NH2 has been identified as the most potent dual NOP/MOP receptor peptide agonist so far described in literature.
Mould, Katy M. « Studies towards the total synthesis and structure elucidation of leiodolide A ». Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/4113.
Texte intégralMohammad, Shabbair. « Vers la synthèse totale du FR225654 inhibiteur de la gluconéogenèse ». Phd thesis, Université René Descartes - Paris V, 2013. http://tel.archives-ouvertes.fr/tel-00932775.
Texte intégralLarsen, Catharine Hoàng-Mai. « Investigating Imidazolidinone Catalysts : Enantioselective Organocatalytic Diels-Alder Reactions, Conjugate Additions to Access Non-Natural ∝-Amino Acids, and Bimodal Catalyst Activation for the Development of Organo-Cascade Reactions ». Thesis, 2006. https://thesis.library.caltech.edu/5254/1/THallpages.pdf.
Texte intégralThe MacMillan group focuses on the development of new strategies that harness the power of simple organic compounds to catalyze asymmetric reactions. To this end, we have designed amine catalysts which activate alpha,beta-unsaturated aldehydes via the reversible formation of chiral iminium ions (in analogy to LUMO-lowering activation by reversible metal-substrate complexation). Kinetic studies highlight the importance of the acid co-catalyst and identified a more reactive imidazolidinone catalyst complex, which improved enantioselectivities and vastly expanded the substrate scope of the first highly enantioselective organocatalytic Diels–Alder reaction. Exploration of the crucial components of catalyst architecture led to the development of the second-generation imidazolidinone that not only catalyzes cycloadditions, but a variety of other reactions of aldehydes with excellent selectivity.
Complementary to the 1,2-addition observed with Lewis acids, the alternative mode of activation offered by iminium catalysis allows for 1,4-addition of heterocycles to alpha,beta-unsaturated aldehydes. Using a chiral amine catalyst, the first asymmetric conjugate addition of oxazoles generates protected quaternary alpha-amino acids with an adjacent tertiary stereocenter, a widely applicable motif in biology, materials science, and medicine. Finally, having demonstrated that imidazolidinones can activate both electrophiles (LUMO-lowering) and nucleophiles (HOMO-raising), these iminium and enamine catalysis cycles can be linked for tandem nucleophilic addition/electrophilic trapping of enals. In a single synthetic operation, this enantioselective conjugate addition/alpha-halogenation sequence takes achiral starting materials and selectively connects them, creating multiple stereocenters across the newly formed bonds.
Livres sur le sujet "Non-natural reactions"
Garshin, Anatoliy. General and inorganic chemistry in diagrams, figures, tables, and chemical reactions. ru : INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1070937.
Texte intégralUfimtseva, Nataliya V., Iosif A. Sternin et Elena Yu Myagkova. Russian psycholinguistics : results and prospects (1966–2021) : a research monograph. Institute of Linguistics, Russian Academy of Sciences, 2021. http://dx.doi.org/10.30982/978-5-6045633-7-3.
Texte intégralChapitres de livres sur le sujet "Non-natural reactions"
Stöckigt, Joachim, Zhong Chen et Martin Ruppert. « Enzymatic and Chemo-Enzymatic Approaches Towards Natural and Non-Natural Alkaloids : Indoles, Isoquinolines, and Others ». Dans Natural Products via Enzymatic Reactions, 67–103. Berlin, Heidelberg : Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/128_2010_80.
Texte intégralLindsay, David M. « The Synthesis of Cyclic Ether-Containing Natural and Non-natural Products by Metathesis Reactions ». Dans Topics in Heterocyclic Chemistry, 33–55. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/7081_2015_197.
Texte intégralKadokawa, Jun-ichi. « α-Glucan Phosphorylase-Catalyzed Enzymatic Reactions to Precisely Synthesize Non-natural Polysaccharides ». Dans ACS Symposium Series, 31–46. Washington, DC : American Chemical Society, 2020. http://dx.doi.org/10.1021/bk-2020-1373.ch002.
Texte intégralAlima, N., R. Snooks et J. McCormack. « Bio Scaffolds ». Dans Proceedings of the 2021 DigitalFUTURES, 316–29. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_29.
Texte intégralMorin, Olivier, Alberto Acerbi et Oleg Sobchuk. « Perché si muore nei romanzi : l’ipotesi della simulazione dell’ordalia ». Dans La narrazione come incontro, 59–80. Florence : Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0045-5.06.
Texte intégralGray, Peter, et Stephen K. Scott. « Thermokinetic Oscillations In A Closed System ». Dans Chemical Oscillations and Instabilities, 83–111. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198556466.003.0004.
Texte intégralScott, Stephen K. « Heterogeneous catalysis ». Dans Chemical Chaos, 353–87. Oxford University PressOxford, 1991. http://dx.doi.org/10.1093/oso/9780198556510.003.0010.
Texte intégralSymons, M. C. R., et J. M. C. Gutteridge. « Natural iron ligands ». Dans Free Radicals and Iron : Chemistry, Biology, and Medicine, 63–97. Oxford University PressOxford, 1998. http://dx.doi.org/10.1093/oso/9780198558927.003.0006.
Texte intégralBrezonik, Patrick L., et William A. Arnold. « Complexation Reactions and Metal Ion Speciation ». Dans Water Chemistry, 333–88. 2e éd. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197604700.003.0009.
Texte intégralKageyama, Hakuto. « Biological Activities of MAAs and their Applications 4 : Anti-glycative Properties ». Dans An Introduction to Mycosporine-Like Amino Acids, 94–101. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136081123010010.
Texte intégralActes de conférences sur le sujet "Non-natural reactions"
Shahsavan, Martia, Mohammadrasool Morovatiyan et J. Hunter Mack. « A Computational Investigation of Non-Premixed Combustion of Natural Gas Injected Into Mixture of Argon and Oxygen ». Dans ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9618.
Texte intégralDalle Vacche, Sara. « Biobased composites from renewable monomers and cellulosic reinforcements by photoinduced processes ». Dans 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/ingy4050.
Texte intégralDalle Vacche, Sara. « Bio-based cationic waterborne polyurethane dispersions from high oleic soybean oil ». Dans 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/xdga8424.
Texte intégralLu, Xijia, et Ting Wang. « Review of Coal-to-Synthetic Natural Gas (SNG) Production Methods and Modeling of SNG Production in an Entrained-Flow Gasifer ». Dans ASME Turbo Expo 2016 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57857.
Texte intégralToema, Mohamed, et Kirby S. Chapman. « Modeling of Lambda Sensor Output With Exhaust Gas Mixtures From Natural Gas-Fueled Engines ». Dans ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/icef2011-60188.
Texte intégralPiestrzyński, Adam, Jadwiga Pieczonka et Edward Chruściel. « Model for Long-Term Stabilization and Isolation of Low Level Uranium Waste ». Dans ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1261.
Texte intégralToema, Mohamed, et Kirby S. Chapman. « Interpreting the Lambda Sensor Output Signal to Control Emissions From Natural Gas Fueled Engines ». Dans ASME 2010 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/icef2010-35164.
Texte intégralLu, Dennis Y., et Edward J. Anthony. « Combustion Characteristics of Natural Gas in a Circulating Fluidized Bed ». Dans 17th International Conference on Fluidized Bed Combustion. ASMEDC, 2003. http://dx.doi.org/10.1115/fbc2003-053.
Texte intégralLi, Rui, et Shichang Liu. « Study on Selection Method of Shielding Nuclides in Nuclear Reactor Based on Non-Dominated Sorting ». Dans 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-90902.
Texte intégralStrasser, Wayne. « Can Naturally Pulsating Prefilming Slurry Atomization Be Enhanced by Artificial External Modulation ? » Dans ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4882.
Texte intégralRapports d'organisations sur le sujet "Non-natural reactions"
Chapman et Toema. PR-266-09211-R01 Physics-Based Characterization of Lambda Sensor from Natural Gas Fueled Engines. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), novembre 2012. http://dx.doi.org/10.55274/r0010022.
Texte intégralRouseff, Russell L., et Michael Naim. Characterization of Unidentified Potent Flavor Changes during Processing and Storage of Orange and Grapefruit Juices. United States Department of Agriculture, septembre 2002. http://dx.doi.org/10.32747/2002.7585191.bard.
Texte intégralMoghimi, Gholamreza, et Nicos Makris. Response Modification of Structures with Supplemental Rotational Inertia. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, janvier 2024. http://dx.doi.org/10.55461/tihv1701.
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