Bioactivity-guided isolation of cytotoxic triterpenoids from the trunk of Berberis koreana
摘要:
A bioassay-guided fractionation and chemical investigation of the trunk of Berberis koreana resulted in the isolation and characterization of two new triterpenoids, 23-trans-p-coumaroyloxy-2 alpha,3 alpha-dihydroxyolean-12-en-28-oic acid ( 1), and 23-cis-p-coumaroyloxy-2 alpha,3 alpha-dihydroxyolean-12-en-28-oic acid ( 2), along with seven known triterpenoids (3-9). The structures of the new compounds were determined on the basis of spectroscopic analyses including 2D NMR. The cytotoxic activities of the triterpenes (19) were evaluated by determining their inhibitory effects on human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15) using the SRB assay. Compounds 5 and 6 showed potent cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines (IC50 ( 5): 4.37, 7.04, 9.72, and 5.83 mu M, and IC50 (6): 5.57, 7.84, 13.29, and 5.61 mu M, respectively). (C) 2010 Elsevier Ltd. All rights reserved.
Bioactivity-guided isolation of cytotoxic triterpenoids from the trunk of Berberis koreana
作者:Ki Hyun Kim、Sang Un Choi、Kang Ro Lee
DOI:10.1016/j.bmcl.2010.01.156
日期:2010.3
A bioassay-guided fractionation and chemical investigation of the trunk of Berberis koreana resulted in the isolation and characterization of two new triterpenoids, 23-trans-p-coumaroyloxy-2 alpha,3 alpha-dihydroxyolean-12-en-28-oic acid ( 1), and 23-cis-p-coumaroyloxy-2 alpha,3 alpha-dihydroxyolean-12-en-28-oic acid ( 2), along with seven known triterpenoids (3-9). The structures of the new compounds were determined on the basis of spectroscopic analyses including 2D NMR. The cytotoxic activities of the triterpenes (19) were evaluated by determining their inhibitory effects on human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15) using the SRB assay. Compounds 5 and 6 showed potent cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines (IC50 ( 5): 4.37, 7.04, 9.72, and 5.83 mu M, and IC50 (6): 5.57, 7.84, 13.29, and 5.61 mu M, respectively). (C) 2010 Elsevier Ltd. All rights reserved.