Diterpenes from ”Pini Resina” and their Preferential Cytotoxic Activity under Nutrient-Deprived Condition - Zaidi, Syed Faisal Haider; Awale, Suresh; Kalauni, Surya Kant; Tezuka, Yasuhiro; Esumi, Hiroyasu; Kadota, Shigetoshi (Planta Medica, 2006)