Recherches sur la synthese totale des alcaloides appartenant a la serie de la carpaine et de la cassine—III
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Add time:07/26/2019 Source:sciencedirect.com
RésuméLes éthylènedioxy-4,4 aldéhydes 1 sont facilement obtenus par C-alcoylation de l'éthoxycarbonyl-1 méthyl-6 heptène-5- one-2 8, suivie d'hydrolyse, décarboxylation, formation du dioxolanne et ozonolyse. Alternativement, on peut préparer les composés 1 par réaction du magnésien du bromo-1 méthyl-4 pentène-3 24 avec un aldéhyde convenable, suivie d'oxydation, formation du dioxolanne et ozonolyse. Certains composés du type 1 devraient se révéler utiles dans la synthèse totale de la carpaïne, de la cassine et des alcaloïdes apparentés.
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