wavelengths for 1 compared to 4. Complexes 1 and 2 showed greater photocytotoxicity than 4 when irradiated with 420 nm light (A2780 cell line IC50 values: 2.7 and 3.7 μM) and complex 2 was particularly active towards the cisplatin-resistant cell line A2780cis (IC50 3.7 μM). Unlike 4, complexes 1–3 were phototoxic under green light irradiation (517 nm), with minimal toxicity in the dark. A pKa(H2O) of 5
配合物trans,trans,trans -[Pt(N 3 ) 2 (OH)(OCOR)(py) 2 ] 其中 py =
吡啶且 OCOR =
琥珀酸盐 ( 1 );通过反式,反式,反式-[Pt(OH) 2 (N 3 ) 2 (py) 2 ] ( 4 ) 的衍生合成了
4-氧代-4-丙氧基丁酸酯 ( 2 ) 和N -甲基
芥酸酸酯 ( 3 ) 并进行了表征通过 NMR 和 EPR 光谱、ESI-MS 和 X 射线晶体学。用绿光 (517 nm) 照射1-3引发 Pt( II ) 的光还原,并以比4快 3 倍的速率释放轴向
配体。 TD-DFT 计算显示1与4相比在更长波长下发生解离跃迁。当用 420 nm 光照射时,复合物1和2表现出比4更大的光细胞毒性(A2780
细胞系 IC 50值:2.7 和 3.7 μM),复合物2对
顺铂耐药
细胞系 A2780cis 特别活跃(IC 50 3.7 μM