Michalska, Klaudia Marciniuk, Jolanta Stojakowska, Anna A new sesquiterpenoid and further natural products from <i>Taraxacum portentosum</i> Kirschner & Štěpánek, an endangered species <p>The chemical studies of roots and aerial parts of <i>Taraxacum portentosum</i> Kirschner & Štěpánek, a member of the section Palustria (H. Lindb.) Dahlst. (Asteraceae), led to the isolation of one new eudesmanolide and 13 known compounds, including five sesquiterpenoids: taraxinic acid, 11β,13-dihydrotaraxinic acid, taraxinic acid β-glucopyranosyl ester and its 11β,13-dihydroderivative, ixerin D, one apocarotenoid ‒ loliolide and seven phenolics: scopoletin, 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone, methyl <i>p</i>-hydroxyphenylacetate, 5-methoxy-eugenyl-4-<i>O</i>-β-glucopyranoside, syringin, dihydroconiferin, and dihydrosyringin. Their structures were established by <sup>1</sup>H NMR. The new compound was characterized as 3-oxo-4β<i>H</i>-11,13-eudesmen-12,6-olide-8-<i>O</i>-β-glucopyranoside based on spectroscopic data (1 D and 2 D NMR) and HRESI mass spectrometry.</p> <p></p> Asteraceae;Palustria;Phenolic compounds;Sesquiterpenoids;Taraxacum portentosum 2020-01-13
    https://tandf.figshare.com/articles/journal_contribution/A_new_sesquiterpenoid_and_further_natural_products_from_i_Taraxacum_portentosum_i_Kirschner_t_p_nek_an_endangered_species/11591823
10.6084/m9.figshare.11591823.v1