Three New Lanostane-Type Triterpene Lactones from the Stem Bark of Abies mariesii - Tanaka, Reiko; Aoki, Hitoshi; Mizota, Tomoshi; Wada, Shun-ich; Matsunaga, Shunyo; Tokuda, Harukuni; Nishino, Hoyoku (Planta Medica, 2000)