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dc.creatorURZUA,ALEJANDRO
dc.creatorMODAK,BRENDA
dc.creatorVILLARROEL,LUIS
dc.creatorTORRES,RENE
dc.creatorANDRADE,LUZ
dc.creatorMENDOZA,LEONORA
dc.creatorWILKENS,MARCELA
dc.date2000-03-01
dc.date.accessioned2019-11-14T12:51:25Z
dc.date.available2019-11-14T12:51:25Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000100004
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/114769
dc.descriptionFrom the CH2Cl2 washings of fresh Heliotropiumspp. (Cochranea section), flavonoids and aromatic geranyl derivativeshave been isolated. Among the flavonoids, flavanones and flavonols arethe most common compounds, and only few flavones have been reported. Inthis communication we report the isolation of several flavonoids from theexudates of H. megalanthum, and H. huascoense. Two of thecompounds isolated from H. huascoense are novel flavonoids, belongingto the uncommon groups of penta-O-substituted flavanones and hexa-O-substitutedflavonols. Our results show a different external flavonoid compositionof H. huascoense from the other Heliotropium spp. so farstudied. They are supported by morphological considerations, in special,the presence or absence of glandular trichomes in Heliotropium spp
dc.formattext/html
dc.languageen
dc.publisherSociedad Chilena de Química
dc.relation10.4067/S0366-16442000000100004
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceBoletín de la Sociedad Chilena de Química v.45 n.1 2000
dc.subjectHeliotropium megalanthum
dc.subjectglandulartrichomes
dc.subject5-hydroxy-7,3',4',5'-tetramethoxylavanone, 5,3'-dihydroxy-7,4'
dc.subject5'-trimethoxyflavanone
dc.subjectHeliotropiumhuascoense
dc.subjectnon-glandular trichomes
dc.subject5-hydroxy-3,7-dimethoxyflavone
dc.subject(2S, 3S)-3,5-dihydroxy-7-methoxyflavanone
dc.titleEXTERNAL FLAVONOIDS FROM HELIOTROPIUM MEGALANTHUM AND H. HUASCOENSE (BORAGINACEAE). CHEMOTAXONOMIC CONSIDERATIONS


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