In a previous research pterocarpan showed good cytotoxicities [12]. Therefore, all of these
compounds were in vitro evaluated for their cytotoxic potential against KB and HeLa cell
lines using the modified MTT method. The in vitro cytotoxic activities of these compounds
are shown in Table 2. Compounds 3 and 5 showed good cytotoxicity against KB and HeLa
cells with IC50 values of 8.22, 8.09 μM and 5.99, 8.69 μM, respectively.
Compounds 1 and 2 showed moderate cytotoxicity against KB and HeLa cells with
IC50values of 19.96, 25.24 μM and 15.77, 18.96 μM, respectively. Compounds 4 and 6 had
weak cytotoxic activities due to IC50 value over 30 μM.