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. 2009 Oct;80(7):437-41.
doi: 10.1016/j.fitote.2009.06.001. Epub 2009 Jun 11.

Chemical constituents of Tolpis species

Jorge Triana  1 , Mariana López, Francisco Javier Pérez, Javier González Platas, Francisco Estévez, Juan Francisco León, Juan Carlos Hernández, Ignacio Brouard, Jaime Bermejo
Affiliations

Chemical constituents of Tolpis species

Jorge Triana et al. Fitoterapia. 2009 Oct.

Abstract

Phytochemical research of two Tolpis species, T. webbii and T. sp., led to the isolation of three new compounds: 2,4'-dihydroxy-4-methoxybenzophenone (1) and the triterpenes 21 alpha, 22 alpha-epoxy-20 alpha-hydroxy-20(30)-dihydrotaraxasterol (2) and 3beta-hydroxytaraxaster-20-en-30-oic acid (3) together with 16 known compounds. The structures of the new compounds were elucidated by means of extensive IR, NMR, MS and X-ray analysis and by comparison of data reported in the literature.

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