References
- Bodley, A.L. and Liu, L.F., Topoisomerases as novel targets for cancer chemotherapy. Bio/Technology. 6, 1315-1319 (1988) https://doi.org/10.1038/nbt1188-1315
- Budzikiewicz, H., Mass spectrometry in structural and stereochemical problems, XXXII. Pentacyclic triterpenes. J. Am. Chem. Soc. 855, 3688-3699 (1963)
- Chen, A.Y. and Liu, L.F., DNA Topoisomerases: Essential enzymes and lethal targets. Annu. Rev. Pharmacol. Toxicol. 34, 191-218 (1994) https://doi.org/10.1146/annurev.pa.34.040194.001203
- D'Arpa, P. and Liu, L.F., Topoisomerase-targeting antitumor drugs. Biochem. Biophys. Acta. 989, 163-177 (1989)
- Fukuda, M., Nishio, K., Kanzawa, F., Ogasawara, H., Ishida, T., Arioka, H., Bojamowski, K., Oka, M. and Saijo, N., Synergism between cisplatin and topoisomerase I inhibitors, NB-506 and SN-38, in human small cell lung cancer cells. Cancer Res. 56, 789-793 (1996)
-
Grover, S.H., Guthrie, J.P., Stothers, J.B., and Tan, C.T., The stereochemical dependence of d-substituent effect in
$^{13}C$ -NMR spectra, Deshielding syn-axial interactions. J. Magn. Res. 10, 227-230 (1973) - Kang, S.S. and Woo, W.S., Synthesis of epaleuritolic acid. Arch. Pharm. Res. 9, 153-156 (1986) https://doi.org/10.1007/BF02899999
-
Kang, S.S.,
$^{13}C$ NMR Spectroscopy of Amyrins. Kor. J. Pharmacogn. 18(3), 151-167 (1987) - Kojima, H. and Ogura, H., Configurational studies on hydroxyl groups at C-2,3 and 23 or 24 of oleanane and ursane-type triterpenes by NMR spectroscopy. Phytochemistry. 28, 1703-1710 (1989) https://doi.org/10.1016/S0031-9422(00)97829-4
- Lin, C.H., Chung, M.I., Gan, K.H. and Chiang, J.R., Xanthones from Formosan gentianaceous Plants. Phytochemistry 26(8), 2381-2384 (1987) https://doi.org/10.1016/S0031-9422(00)84724-X
- Liu, L.F., DNA topoisomerase poisons as antitumor drugs. Annu. Rev. Biochem. 58, 351-375 (1989) https://doi.org/10.1146/annurev.bi.58.070189.002031
- Mosman, T., Rapid colorimetric assay for cellular growth and surviral: Application to proliferation and cytotoxicity assays. J. Immunol. Method. 65, 55-63 (1983) https://doi.org/10.1016/0022-1759(83)90303-4
- Nakanish, T., Terai, H., Nasu, M., Miura, I. and Yoneda, K., Two triterpenoid glycosides from leaves of Ilex cornata. Phytochemistry. 21(6), 1373-1377 (1982) https://doi.org/10.1016/0031-9422(82)80145-3
- Namba, T., Toyama Med. Pharm. University, Research Institute for Wakan-Yaku. The encyclopedia of Wakan-Yaku (Traditional Sino- Japanese Medicines) with color pictures. 1, 119-121 (1994)
- Numata, A., Yang, P., Takahashi, C., Fujiki, R., Nabae, M., and Fujita, E., Cytotoxic triterpenes from a Chinese medicine Greishi. Chem. Pharm. Bull. 37(3), 648-651 (1989) https://doi.org/10.1248/cpb.37.648
- Okuda, T., Hatano, T., Agata, I., and Nishibe, S., The components of tannic activities in Labiatae plants, I. Rosmarinic acid from Labiatae plants in Japan. Yakugaku Zasshi. 106(12), 1108-1101 (1986) https://doi.org/10.1248/yakushi1947.106.12_1108
- Pommier, Y., DNA topoisomerases I and II in cancer chemotherapy: update and perspectives. Cancer Chemother. Pharmacol. 32, 103-108 (1993) https://doi.org/10.1007/BF00685611
- Potmesil, M., Camptothecins: From bench research to hospital wards. Cancer Res. 54, 1431-1439 (1994)
- Rubinstein, L.V., Shoemaker, R.H., Paul, K.D., Simon, R.M., Tosini, S., Skehan, P., Scudiero, D.A., Monks, A. and Boyd, M.R., Comparison of in vitro anticancer-drug-screening data generated with a tetrazolium assay versus a protein assay against a diverse panel of human tumor cell lines. J. Nat. Cancer Inst. 82, 1113-1118 (1990) https://doi.org/10.1093/jnci/82.13.1113
- Slichenmeyer, W.J., Rowinsky, E.K., Donehower, R.C., and Kaufmann, S.H., The current status of antitumor agents. J. Natl. Cancer Inst. 85, 271-291 (1993) https://doi.org/10.1093/jnci/85.4.271
- Tian, J., Xiao, Z.Y., Chen, Y.Y., and Wang, Z.I., Structure identification of vulgarsaponin A. Acta Pharm. Sin. 35, 29-31 (2000)
- Wang, J.C., DNA topoisomerases. Annu. Rev. Biochem. 65, 635-692 (1996) https://doi.org/10.1146/annurev.bi.65.070196.003223
- Wang, Z.J., Zhao, Y.Y., Tu, G.Z., Hong, S.L., and Chen, Y.Y., Studies on the chemical constituents from Prunella vulgaris. Acta Pharm. Sin. 34(9), 679-681 (1999)