Lipophilic flavones of Primula veris L. from field cultivation and in vitro cultures

Ten lipophilic flavones, including the new natural products 3′-hydroxy-4′,5′-dimethoxyflavone, 3′-methoxy-4′,5′-methylenedioxyflavone, 2′,5′-dimethoxyflavone and 3′,4′-dimethoxyflavone, were found in the leaves of Primula veris L. (Primulaceae).