Sökning: "1-dioxides"

Hittade 2 avhandlingar innehållade ordet 1-dioxides.

  1. 1. On the Ring-Opening Reaction of Thiophene-1,1-dioxides and the Intramolecular Diels-Alder Reaction of Azanona- and AzadecatrienesI

    Författare :Anders Sebastian Tsirk; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transition states; 3-21G * ; intramolecular Diels-Alder reactions; asymmetric induction; multivariate optimization; kinetic isotope effects; rearrangements; secondary amines; 1-dioxides; Ring-opening reaction; thiophene-1; stereoselectivity.; Organic chemistry; Organisk kemi;

    Sammanfattning : Substituted thiophene-1,1-dioxides were synthesized and their ring-opening reactions with omega-unsaturated secondary amines were investigated; this led to a synthetic route to azatrienes and to the preparation of some polyhydroisoindoles and polyhydroisoquinolines via an intramolecular Diels-Alder reaction. By using 2-substituted pyrrolidines and piperidines various tetrahydrobenzo[f]indolizidines, benzo[b]quinolizidines, tetrahydrobenzo[a]indolizidines and tetrahydro[a]pyrrolizidines could be synthesized via the ring-opening of 3-bromo-2,5-dimmethylthiophene-1,1-dioxide and a subsequent intramolecular Diels-Alder reaction. LÄS MER

  3. 2. Modulating Sirtuin Activity - Design, Synthesis and Evaluation of Sirtuin 2 Inhibitors

    Författare :Tina Seifert; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sirtuin; SIRT2; Inhibitors; Chroman-4-ones; Chromones; Benzothiadiazine-1; 1-dioxides; Saccharin; Scaffold; Structure-activity relationship; Antiproliferative properties; Binding site; Homology modeling; Photoaffinity labeling; Diazirine; Mass spectrometry;

    Sammanfattning : Sirtuins (SIRTs) are NAD+-dependent lysine deacetylating enzymes targeting histones and a multitude of non-histone proteins. The SIRTs have been related to important cellular processes such as gene expression, cell proliferation, apoptosis and metabolism. They are proposed to be involved in the pathogenesis of e.g. LÄS MER