Chemical constituents from the roots of Asarum sieboldii Miq. var. Seoulense Nakai

Fourteen compounds were isolated from the 95% ethanol reflux extract of Asarum sieboldii Miq. var. Seoulense Nakai, including five phenanthrene derivatives (1–5), three isobutyl amides (6–8), three phenylpropanoids (9–11) and three lignins (12–14). The structures of these compounds were identified by spectroscopic methods and by comparison with the reported spectroscopic data. Among them, compounds 6 and 11 were firstly reported from the family...