A series of novel silicon (IV) phthalocyanines conjugated axially with different nucleoside moieties (uridine, 5-methyluridine, cytidine, and 5-N-cytidine derivatives) have been synthesized and evaluated for their photodynamic activities. The uridine-containing compound 1 exhibits the highest photocytotoxicity against HepG2 human hepatocarcinoma cells with an IC50 value as low as 6 nM, which can be attributed to its high cellular uptake ...
![4-amino-1-[4-(hydroxymethyl)-7,7-dimethyl-3,6,8-trioxabicyclo[3.3.0]oct-2-yl]-1,3,5-triazin-2-one Structure](https://image.chemsrc.com/caspic/217/65370-90-3.png)
