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  • 1.
    Krishna Prasad, Golla
    Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
    Synthesis of multicyclic 2-pyridones from a formyl and chlorometylene substituted precursor using a strategy of directed diversity-oriented synthesis2012Independent thesis Advanced level (degree of Master (Two Years)), 30 poäng / 45 hpOppgave
    Abstract [en]

    Multi ring-fused 2-pyridones have shown interesting activity in a variety of biological systems. It would be of great interest to explore the biological application of even more multi heterocyclic ring fused 2-pyridones. ‘Diversity oriented synthesis’ is an excellent concept emerged in recent years to access compounds with structurally and stereochemically diverse skeletons. This served as an efficient avenue for synthesizing various ring fused 2-pyridones using formyl, chloromethylene substituted 2-pyridone (

    6) as a starting compound. By treating the starting material (6) with various nucleopliles, different sized heterocyclic ring fused 2-pyridones has been synthesized. Additionally, an improved methodology for the synthesis of naphthyridones was presented.

  • 2.
    Lidman, Martin
    Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
    Micro Scale Synthesis of Tritium LabeledIsoallopregnanolone for Use in RIA-analysis2010Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    In this thesis it was shown that Isoallopregnanolone can be synthesized from

    Allopregnanolone by the Mitsunobu reaction as well as by oxidation with o-iodoxybenzoic

    acid (IBX) with subsequent reduction with NaBH

    4. It was shown that the oxidation with

    subsequent reduction was a better method for synthesis in microgram scale. The oxidationreduction

    method was carried out in microgram scale on tritium labeled Allopregnanolone

    (Pregnane-3α-ol-20one, 5α[9,11,12-

    3H(N)] to produce the corresponding tritium labeled

    Isoallopregnanolone. The possibility of synthesizing Tetrahydrodeoxycorticosterone

    (THDOC) from Allopregnanolone in microgram scale was examined. Formation of a

    silylenol ether analog of Allopregnanolone and subsequent oxidation with m-CPBA was

    examined as a method to synthesizing THDOC. The synthesis of THDOC by this procedure

    was found not to be efficient enough to be used in microgram scale

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