Antiviral Activity of Seven Iridoids, Three Saikosaponins and One Phenylpropanoid Glycoside Extracted from Bupleurum rigidum and Scrophularia scorodonia - Bermejo, Paulina; Abad, María José; Díaz, Ana María; Fernández, Lidia; Santos, Javier De; Sanchez, Sandra; Villaescusa, Lucinda; Carrasco, Luis; Irurzun, Alicia (Planta Medica, 2002)