Lebsack, Alec D.; Gunzner, Janet; Wang, Bowei; Pracitto, Richard; Schaffhauser, Herve; Santini, Angelina; Aiyar, Jayashree; Bezverkov, Robert; Munoz, Benito; Liu, Wensheng; Venkatraman, Shankar Bioorganic and Medicinal Chemistry Letters, 2004 , vol. 14, # 10 p. 2463 - 2467