References
- Asakawa, Y. and Takemoto, T., Sesquiterpene lactones of Conocephalum conicum. Phytochemistry, 18, 285-288 (1979) https://doi.org/10.1016/0031-9422(79)80072-2
- Gonzalez, A. G., Bermejo, J., Cabrera, I., Massanet, G. M., Mansilla, H., and Galindo, A., Two sesquiterpene lactones from Centaurea canariensis. Phytochemistry, 17, 955-956 (1978) https://doi.org/10.1016/S0031-9422(00)88655-0
- Grippo, A. A., Hall, I. H., Kiyokawa, H. Muraoka, O., Shen, Y. C., and Lee, K. H., The cytotoxicity of helenalin, its mono and difunctional esters, and related sesquiterpene lactones in murine and human tumor cells. Drug Design Discovery, 8, 191-206 (1992)
- Ha, T. J., Hwang, S. W., Jung, H. J., Park, K. H., and Yang, M. S., Apigenin, tyrosinase inhibitor from the flowers of Hemisteptia lyrata Bunge. Agric. Chem. Biotechnol., 45, 170-172 (2002a)
- Ha, T. J., Jang, D. S., Lee, K. D., Lee, J. R., Park, K. H., and Yang, M. S., Studies on the constituents from the flowers of Hemisteptia lyrata Bunge II. Kor. J. Pharmacogn., 33, 92-95 (2002b)
- Ha, T. J., Yang, M. S., Pak, Y. B., Lee, J. R., Lee, K. D., Kim, H. M., and Park, K. H., New guaiane-type sesquiterpene lactones from Hemisteptia lyrata Bunge. Heterocycles, 57, 151-155 (2002c) https://doi.org/10.3987/COM-01-9387
- Ha, T. J., Park, K. H., Jang, D. S., Lee, J. R., Park, K. M., and Yang, M. S., New sesquiterpene lactones from Hemisteptia lyrata bunge. Heterocycles, 60, 623-629 (2003) https://doi.org/10.3987/COM-02-9669
- Hall, I. H., Grippo, A. A., Lee, K. H., Chaney, S. G., and Holbrook, D. J., Effect of helenalin and bis(helenalinyl) malonate on nucleic acid protein synthesis in human KB carcinoma cells. Pharmaceu. Sci., 4, 509-514 (1987)
- Hall, I. H., Lee, K. H., and Eigebaly, S. A., Antitumor agents XXVII: Effects of helenalin on anaerobic and aerobic metabolism of ehrlich ascites cells. J. Pharm. Sci., 67, 552-554 (1978) https://doi.org/10.1002/jps.2600670430
- Hall, I. H., Lee, K. H. Starnes, C. O., Eigebaly, S. A., Ibka, T., Wu Y. S., Kimura, T., and Haruna, M., Antitumor agents XXX: Evaluation of alpha-methylene-gamma-lactone containing agents for inhibition of tumor qrowth, respiration, and nucleic acid synthesis. J. Pharm. Sci., 67, 1235-1239 (1978) https://doi.org/10.1002/jps.2600670912
-
Hoffmann, H. M. R. and Rabe, J., Synthesis and biological activity of
$\alpha$ -methylene-$\gamma$ -butyrolactones. Angew. Chem. Int. Ed. Engl., 24, 94-110 (1985) https://doi.org/10.1002/anie.198500941 - Jang, D. S., Yang, M. S., and Park, K. H., Sesquiterpen lactone from Hemisteptia lyrata. Planta Med., 64, 289-290 (1998) https://doi.org/10.1055/s-2006-957436
- Jang, D. S., Yang, M. S., Ha, T. J., and Park, K. H., Hemistepsins with cytotoxic activity from Hemisteptia lyrata, Planta Med., 65, 765-766 (1999) https://doi.org/10.1055/s-2006-960863
- Lee, K. H., Hall, I. H., Mar, E. C., Starnes, C. O., Elgebaly, S. A., Waddell, T. G., Hadgraft, R. I., Ruffner, C. G., and Weidner, I., Sesquiterpene antitumor agents: Inhibitors of cellula metabolism. Science, 196, 533-536 (1977) https://doi.org/10.1126/science.191909
- Merrill, G. B. and Stevens, K. L., Sesquiterpene lactones from Centaurea solstitialis. Phytochemstry, 24, 2013-2018 (1985) https://doi.org/10.1016/S0031-9422(00)83113-1
- Peoples Press. In Encyclopedia of the Traditional Chinese Materia Medica. p. 1458-1459. Shanghai, P. R. China (1977)
- Shehan, P., Storeng, R., Scudiero, D., Monks, A., Mcmahon, J., Vistica, D., Warren, J. T., Bokesh, H., Kenny, S., and Boyd, M. R., New colorimetric cytotoxicity assay for anticancer-drug screening. J. Natl. Cancer Inst., 82, 1107-1112 (1990) https://doi.org/10.1093/jnci/82.13.1107