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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Síntesi de 1-oxaspiro [4.4]nonans polifuncionalitzats i (+-)-andirolactona

Planas i Grabuleda, Marta 15 March 1996 (has links)
Spiro-γ-lactones are widely distributed among natural products, several of them being well known by their interesting biological activities. We describe herein the synthesis of 1-oxaspiro[4.4]nonan derivatives and (+-)-andirolactone starting from easily available Diels-Alder adducts of 5-methylene-2(5H)-furanome 1 and classical dianes / La química de les espiro-γ-lactones ha despertat un considerable interès principalment degut a què moltes molècules que posseeixen aquesta estructura presenten diverses i significatives activitats biològiques. En aquesta tesi doctoral, prenent com a precursors els adductes de Diels-Alder, s’han investigat noves rutes sintètiques cap a 2(3H)-dihidrofuanones 5.5-disubstituïdes i oxaspiro[4.4]nonans polifuncionalitzats. Es presenten dues noves síntesis de (+-)-andirolactona 2, sesquiterpenoid amb estructura d’espiro-γ-butirolactona, recentment aïllat del Cedrus Libanotica i interessant per les seves propietats medicinals i biològiques potencials

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