Examinando por Autor "Orejarena, Silvia"

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    Ítem
    13- EPI-neoclerodanes from baccharis marginalis
    (Sociedad Chilena de Quimica, 2010) San-Martín, Aurelio; Astudillo, Luis; Gutiérrez, Margarita; Chamy, Maria Cristina; Orejarena, Silvia; Rivera, Patricio; Vergara, Karen
    In addition to the known diterpenes, desoxyarticulin and dihydrotucumanoic acid, a new neoclerodane diterpene was isolated from Baccharis marginalis. The structures of the compounds were elucidated by spectroscopic evidence. © 2010.
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    Ítem
    Biotransformation of ent-beyerenes with mucor plumbeus
    (Sociedad Chilena de Química, 2013) Chamy, María Cristina; San Martin, Aurelio; Orejarena, Silvia; Rovirosa, Juana
    ABSTRACT The microbiological transformation of ent-beyer-15-en-18-ol 1 and ent-beyer-15-en-19-ol 2, using Mucorplumbeus, resulted in hydroxylated products. After nine days of incubation, 15β,16β-epoxide-ent-beyeran-7β,18-diol 3, ent-beyer-15-en-7p,19-diol 4 and 15β,16β-epoxide-ent-beyeran-7β,19-diol 5 were isolated. The metabolites were identified by spectroscopic methods. Key Words: