Structure and Antiinflammatory Activity Relationships of Wogonin Derivatives

  • Jang, Jin-Hee (College of Pharmacy, Kangwon National University) ;
  • Kim, Hyun-Pyo (College of Pharmacy, Kangwon National University) ;
  • Park, Hae-Il (College of Pharmacy, Kangwon National University)
  • Published : 2005.08.01

Abstract

A number of wogonin derivatives have been synthesized as congeners of wogonin and evaluated for their inhibitory activities of $PGE_2$ production. Wogonin derivatives modified at the B ring of wogonin were obtained from 2,4-Dihydroxy-3,6-dimethoxyacetophenone (1) via several steps. Most wogonin derivatives exhibited much reduced inhibitory activities against COX-2 catalyzed $PGE_2$ production compared to that of wogonin. Alkylation of 5,7-phenol groups and substitution at the B ring of wogonin generally caused reduction of inhibitory activity.

Keywords

References

  1. Chen, Y. C., Shen, S. C., Chen, L. G., Lee, T. J., and Yang, L. L., Wogonin, baicalin, and baicalein inhibition of inducible nitric oxide synthase and cyclooxygenase-2 gene expression induced by nitric oxide synthase inhibitors and lipopolysaccharide. Biochem. Pharmacol., 61, 1417-1427 (2001) https://doi.org/10.1016/S0006-2952(01)00594-9
  2. Chi, Y. S., Cheon, B. S., and Kim, H. P., Effect of wogonin, a plant flavone from Scutellaria radix, on the suppression of cyclooxygenase-2 and the induction of inducible nitric oxide synthase in lopopolysaccharide-treated RAW 264.7 cells. Biochem. Pharmacol., 61, 1195-1203 (2001) https://doi.org/10.1016/S0006-2952(01)00597-4
  3. Chi, Y. S., Lim, H., Park, H., and Kim, H. P., Effects of wogonin, a plant flavone from Scutellaria radix, on skin inflammation: in vivo regulation of inflammation-associated gene expression. Biochem. Pharmacol., 66, 1271-1278 (2003) https://doi.org/10.1016/S0006-2952(03)00463-5
  4. Dao, T. T., Chi, Y. S., Kim, J., Kim, H. P., Kim, S., and Park, H., Synthesis and inhibitory activity against COX-2 catalyzed prostaglandin production of chrysin derivatives. Bioorg. Med. Chem. Lett., 14, 1165-1167 (2004a) https://doi.org/10.1016/j.bmcl.2003.12.087
  5. Dao, T. T., Kim, S. B., Sin, K.-S., Kim, S., Kim, H. P. and Park, H., Synthesis and biological activities of 8-arylflavones. Arch. Pharm. Res., 27, 278-282 (2004b) https://doi.org/10.1007/BF02980059
  6. Kim, H. P., Son, K. H., Chang, H. W., and Kang, S. S., Antiinflammatory plant flavonoids and cellular action mechanism. J. Pharmacol. Sci., 96, 229-245 (2004) https://doi.org/10.1254/jphs.CRJ04003X
  7. Kim, Y. P., Yamada, M., Lim, S. S., Lee, S. H., Ryu, N., Shin, K. H., and Okuchi, K., Inhibition by tectorigenin and tectoridin of prostaglandin E2 production and cyclooxygenase-2 induction in rat peritoneal macrophages. Biochim. Biophys. Acta, 1438, 399-407 (1999) https://doi.org/10.1016/S1388-1981(99)00067-0
  8. Lee, H., Kim, Y. O., Kim, H., Kim, S. Y., Noh, H. S., Kang, S. S., Cho, G. J., Choi, W. S., and Suk, K., Flavonoid wogonin from medicinal herb is neuroprotective by inhibiting inflammatory activation of microglia. FASEB J., 17, 1943-1944 (2003) https://doi.org/10.1096/fj.03-0057fje
  9. Liang Y.-C., Huang Y.-T., Tsai S.-H., Shiau S.-Y., Chen C.-F., and Lin J.-K., Suppression of inducible cyclooxygenase and inducible nitric oxide synthase by apigenin and related flavonoids in mouse macrophages. Carcinogenesis, 20, 1945- 1952 (1999) https://doi.org/10.1093/carcin/20.10.1945
  10. Middleton, E., Kandaswami, C., and Theoharides, T. C., The effects of plant flavonoids on ammmalian cells: implications for inflammation, heart disease, and cancer. Pharmacol. Rev., 52, 673-751 (2000)
  11. Mossman, T., Rapid colorimetric asay for cellular growth and survival: application to proliferation and cytotoxic assays. J. Immunol. Methods, 65, 55-63 (1983) https://doi.org/10.1016/0022-1759(83)90303-4
  12. Needleman, P. and Isakson, P., The discovery and function of COX-2. J. Rhematol. 24(Suppl. 49), 6-8 (1997)
  13. Tisdale, E. J., Vong, B. G., Li, H., Kim, S. H., Chowdhury, C., and Theodorakis, E. A., Total synthesis of seco-lateriflorone. Tetrahedron, 59, 6873-6887 (2003) https://doi.org/10.1016/S0040-4020(03)00862-7
  14. Wakabayashi, I., Inhibitory effects of baicalein and wogonin on lipopolysaccharide-induced nitric oxide production in macrophages. Pharmacol. Toxicol., 84, 288-291 (1999) https://doi.org/10.1111/j.1600-0773.1999.tb01496.x
  15. Wakabayashi, I. and Yasui, K., Wogonin inhibits inducible prostaglandin $E_2$ production in marophages. Eur. J. Pharmacol., 406, 477-481 (2000) https://doi.org/10.1016/S0014-2999(00)00695-6