作者:Ki Duk Park、Sul Gi Lee、Sung Uk Kim、Sung Han Kim、Won Suck Sun、Sung Jin Cho、Do Hyeon Jeong
DOI:10.1016/j.bmcl.2004.07.063
日期:2004.10
By changing the structure or replacing the gallate group of (-)-ECG, 3-O-acyl and alkyl-(-)-epicatechin derivatives were synthesized to be screen as anticancer agents using the MTT assay in vitro against cancer cell lines (PC3, SKOV3, U373MG). 3-O-Acyl and alkyl-(-)-epicatechin derivatives (4-25) exhibited better anticancer activity than (-)-ECG and specially, compounds 6-8, 17-19, which were modified aliphatic chains with moderate sizes (C8-C12) showed strong anticancer activity (IC50 = 6.4-31.2 muM). The introduction of an alkyloxy group on 3-O-hydroxyl instead of an acyloxy group significantly enhanced inhibitory activity. Consequently, the compound that showed the most potency as anticancer agents were 3-O-decyl-(-)-epicatechin (18) (IC50 = 8.9, 7.9, 6.4 muM against PC3, SKOV3, U373MG, respectively), which modified the appropriate lipophilic group on the C-3 hydroxyl as an alkyloxy group. (C) 2004 Elsevier Ltd. All rights reserved.