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 7 of 7 for “"dihydrobenzofurans"”.
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Isolation and Characterization of Bioactive Metabolites from Endophytic Fungi of Pinus Strobus
… (3), one furfuryl ether derivative (4), four dihydrobenzofurans derivatives (5-8), one xanthene derivative (9), and one polyoxygenated cyclohexene (10). Two of the dihydrobenzofurans compounds are new (7 and 8), while the other two (5 and 6) are reported here for the first time as natural …
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New synthetic approaches to 8,5'-neolignans
… in nature. The published syntheses of trans-dihydrobenzofurans are multistep procedures that are time consuming and provide the product in low yield. Furthermore, all dimerisation reactions either in the presence of enzymes or mediated by metal salts are yielding dimers consisting of two …
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Photochemical transformations of α-diazocarbonyl compounds in flow
… These photochemical transformations yielded 2,3-dihydrobenzofurans, γ- and β-lactones, oxazoles and Wolff rearrangement products indicating the synthetic versatility of these metal-free processes. Continuous flow technology was also applied to telescope sulfonyl azide generation, diazo transfer …
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Mg- and Zn-Mediated Synthesis of Heterocycles in Solution and on the Solid Phase
… a bromine-magnesium exchange. • Synthesis of dihydrobenzofurans and tetrahydrobenzazepines An access to dihydrobenzofurans, benzolactams and tetrahydrobenzazepines was developed using arylmagnesium reagents bearing an o-chloromethyl group. Cl MgBr CO2Et Br 83 % CuCN 2 LiCl cat. . Cl CO2Et RNH2 …
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The Application of sSPhos as a Chiral Ligand in Palladium-Catalysed Reactions: Arylative Dearomatisations, and Heteroarylative Cyclisations with Alkenes
… for the synthesis of chiral indolines and 2,3-dihydrobenzofurans. This project is ongoing and being continued by Paul Jirsch, a visiting Master’s student in the Phipps group. The final chapter presents an enantioselective formal synthesis of a natural product, (–)-aflatoxin B2. The key step was …
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Aplicaciones sintéticas de hidrolasas y oxidorreductasas para la preparación de compuestos orgánicos ópticamente activos. Desarrollo de procesos de resolución y asimetrización enzimáticos
… en: ¿Straighforward synthesis of enantiopure 2,3-dihydrobenzofurans by a secuential stereoselective biotransformation and chemical intramolecular cyclization¿. Org. Lett. 2010, 12, 3498-3501. El cuarto capítulo describe la preparación asimétrica de 3-metilisobenzofuranonas, cuyos resultados se …
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Mechanistic, Biochemical, and Theoretical Studies of Phototoxicity and Photobluing
… detected by 1D and 2D NMR techniques, including dihydrobenzofurans bearing hydroperoxide, alcohol, and epoxide side-groups. The secondary photoproducts enhanced toxicity to ovarian cancer cells ascribed to tandem type II (<sup>1</sup>O<sub>2</sub>) followed by type I reactions involving oxygen …