“…Antimicrobial, antiviral and antifeedant and cytotoxic properties of various extracts of this plant have been reported (Kutas & Nadasy, 2005;Akçin et al, 2006;Orhan et al, 2009;Turkoglu et al, 2010). Previous phytochemical investigations on this plant revealed the presence of cloredan and neocloredan diterpenes in the aerial parts, and β-pinene and germacrene-D as the major components of the essential oils (Hernandez et al, 1980;Camps et al, 1984Camps et al, , 1987Boneva et al, 1990;Baser et al, 1999;Azizan et al, 2002;Velasco-Negueruela et al, 2004). In continuation of our phytochemical and pharmacological studies on the medicinal plants of the Iranian flora (Delazar et al, 2004(Delazar et al, , 2006(Delazar et al, , 2007(Delazar et al, , 2010a2011a,b;Babaei et al, 2008;Nazemieyh et al, 2008aNazemieyh et al, ,b, 2011Nazifi et al, 2008;Razvi et al, 2008Razvi et al, , 2011Modaressi et al, 2009;Asnaashari et al, 2010), we now report on the isolation, identification and free-radicalscavenging properties of three phenolic glycosides (1-3), and the composition of the essential oils of the aerial parts of Ajuga chamaepitys (L.) Schreb.…”