Macsynergy plots of 45 with cisplatin in HCT116 cells (a), cisplatin in HFL1 cells (b), IR in HCT116 cells (c), and IR in HFL1 cells (d).
Synthetic route for the preparation of 4a−e from cisplatin: (a) 30% H2O2, 50 °C; (b) succinic anhydride, anhydrous DMSO, room temperature; (c) R−N=C=O, anhydrous DMF, room temperature
HeLa cell survival measured by MTT test after 48 h of incubation.
Platinum intracellular accumulation in HeLa cells after 3 h continuous exposure to cisplatin, 1a and 1b, administered at the same concentration (1 lM).