Synthesis of a Triterpenoid with a 1,2,4,5-Tetraoxane Fragmentстатья
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Дата последнего поиска статьи во внешних источниках: 26 апреля 2016 г.
Аннотация:Acid-catalyzed formation of the peroxyacetal of cyclohexanone bis-hydroperoxide and a triterpene ketone synthesized for the first time 19β,28-epoxy-28-oxo-18α-olean-3-spiro-6′-(1′,2′,4′,5′-tetraoxacyclohexane)-3′-spirocyclohexane, the structure of which was confirmed by NMR spectroscopy and an x-ray crystal structure analysis. 19β,28-Epoxy-28-oxo-18α-olean-1-en-3-one was formed as a side product during oxidative dehydration of 28-oxoallobetulone.