Repository logo

Browsing by Author "Gaspar-Marques, Cristina"

Now showing 1 - 2 of 2
  • Further diterpenoids from Plectranthus ornatus and P-grandidentatus
    Publication . Rijo, Patricia; Gaspar-Marques, Cristina; Simoes, Maria F.; Jimeno, Maria L.; Rodriguez, Benjamin
    A new halimane diterpenoid and the previously known labdane rhinocerotinoic acid were isolated from Plectranthus ornatus Codd. In addition, a new monoacetyl derivative of the abietane coleon U was found among the constituents of Plectranthus grandidentatus Gurke. These diterpenes could be significant from both chemotaxonomic and biogenetic points of view. (c) 2006 Elsevier Ltd. All rights reserved.
    2007Journal article Metadata only Show more
  • Terpenoids and phenolics from Plectranthus strigosus, bioactivity screening
    Publication . Gaspar-Marques, Cristina; Simoes, M. Fatima; Valdeira, M. Luisa; Rodriguez, Benjamin
    Further studies on Plectranthus sp. (Lamiaceae) led to the isolation of terpenes and phenol esters from Plectranthus strigosus Benth. ent-16-Kauren-19-ol (1), ent-16-kauren-19-oic acid (2), xylopic acid (3), xylopinic acid (4), hinokiol (5), 4 beta,6 beta-dihydroxy-1 alpha,5 beta(H)-guai-9-ene (6) 4 beta,6 beta-dihydroxy-1 alpha,5 beta(H)-guai-10(14)-ene (7), mixtures of hexacosan-1,26-diol and octacosan-1,28-diol ferulate diesters (8), of esters from ferulic acid and fatty alcohols (9) and of esters from fatty acids and 2-(4-hydroxyphenyl)-ethanol (10) were for the first time isolated from this genus. Supplementary spectral data for 3,8 and parvifloron D (11) metabolites are also presented. A bioactivity study revealed herpetic inhibitory properties for (1) and (2), and antioxidant ability for (5) and (8) phenolic constituents.
    2008Journal article Metadata only Show more