1. Srivastava PC, Robins RK (1983) J Med Chem 26:445–448
2. Wu W, Murakami K, Koketsu M, Yamada Y, Saiki I (1999) Anticancer Res 19:5375–5382
3. May SW (2002) Exp Opin Invest Drugs 11:1261–1269
4. Parnham MJ, Graf E (1991) Prog Drug Res 36:9–47
5. Koketsu M, Ishihara H, Hatsu M (1998) Res Commun Mol Pathol Pharmacol 101:179–186