1. Cassidy, F., Evans, J.M., Hadley, M.S., Haladij, A.H., Leach, P.E., and Stemp, G.. J. Med. Chem., 1992, vol. 35, p.1623.
2. El-Agrody, A.M., El-Hakim, M.H., AbdEl-Latif, M.S., Fakery, A.H., El Sayeed, and Ghareeb, El-K.A., Acta Pharm., 2000, vol. 50, p. 111.
3. Ohira, T. and Yatagai, M., J. Jpn. Wood Res. Soc., 1993, vol. 39, p. 231.
4. Mohr, S.J., Chirigos, M.A., Fuhrman, F.S., and Pryor, J.W., Cancer Res., 1975, vol. 35, p.3750.
5. Martinez, A.G. and Marco, L.J., Bioorg. Med. Chem. Lett., 1997, vol. 24, p.165.