Antileishmanial Activity of Some Abietane Diterpenoids from Taxodium distichum - Naman, CB; Gromovsky, AD; Vela, CM; Fletcher, JN; Zhu, X; Gupta, G; Varikuti, S; Werbovetz, KA; Satoskar, AR; Kinghorn, AD (Planta Medica, 2013)