1. Badria, F. A. and Elgayyar, M. A., A new type of tyrosinase inhibitors from natural products as potential treatments for hyperpigmentation.Boll. Chim. Farmac., 140, 267–271 (2001).
2. Dao, T. T., Oh, J. W., Chi, Y. S., Kim, H. P., Sin, K-S., and Park, H., Synthesis and PGE2 inhibitory activity of vinylated and allylated chrysin analogues.Arch. Pharm. Res., 26, 581–584 (2003).
3. Ha, T. J., Yang, M. S., Jang, D. S., Choi, S. U., and Park, K. H., Inhibitory activities of flavanone derivatives isolated fromSophora flavecens for melanogenesis.Bull. Kor. Chem. Soc., 22, 97–99 (2001).
4. Kang, S. S., Kim, J. S., Son, K. H., Chang, H. W., and Kim, H. P., A new prenylated flavanone from the roots ofSophora flavescens.Fitoterapia, 71, 511–515 (2000).
5. Kim, J. S., Byun, J. H., Kang, S. S., Son, K. H., Kim, H. P., and Chang, H. W., Isolation of flavonoids and a saponin fromEchinosophora koreensis.Kor. J. Pharmacogn., 33, 110–115 (2002).