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Sesquiterpenes and Phenolic Compounds from Achillea clypeolata Ingrid Werner

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Sesquiterpenes and Phenolic Compounds from Achillea clypeolata

Ingrid Wernera, Pavel Mucajia,b, Armin Presserc, and Sabine Glasla

aDepartment of Pharmacognosy, University of Vienna, PharmaCenter, Althanstraße 14, A-1090 Vienna, Austria

bInstitute of Pharmacognosy and Botany, Comenius University, Pharmaceutical Faculty, Odbojarov 10, SK-83232 Bratislava, Slovakia

cInstitute of Pharmaceutical Sciences, Karl-Franzens-Universit¨at Graz, Universit¨atsplatz 1, A-8010 Graz, Austria

Reprint requests to Dr. S. Glasl. Fax: +43 1 4277 9552. E-mail: sabine.glasl@univie.ac.at Z. Naturforsch.2007,62b,267 – 271; received June 27, 2006

The investigation of a dichloromethane extract of flower heads ofAchillea clypeolatacollected in Bulgaria led to the isolation of one guaiane (4,10,11-trihydroxy-guaiane, 1), four eudesmanes (4(15)-eudesmene-1β,11-diol,2, clypeotriol,3, 3-epi-clypeotriol,4, cryptomeridiol,5), one diterpene (sugeroside,6) and two phenolic compounds (centaureidin,7and scopoletin,8). Their structures were elucidated by UV/vis, EI- and CI-MS as well as by one- and two-dimensional NMR experiments.

4,10,11-Trihydroxy-guaiane (1) and 3-epi-clypeotriol (4) are reported here for the first time.

Key words: Achillea clypeolata, Sesquiterpenes, Phenolic Compounds

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