[1] Purdue Univ, Sch Pharm & Pharmaceut Sci, Dept Med Chem & Mol Pharmacol, W Lafayette, IN 47907 USA
[2] Purdue Univ, Purdue Canc Ctr, W Lafayette, IN 47907 USA
[3] Natl Inst Hlth, Natl Canc Inst, Div Canc Treatment & Diag, Dev Therapeut Program,Toxicol & Pharmacol Branch, Frederick, MD 21702 USA
[4] EntreMed Inc, Rockville, MD 20850 USA
[5] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA