Add time:09/04/2019 Source:sciencedirect.com
We synthesized new hydrophilic CHLORIN E6 (cas 19660-77-6) derivatives with two and four galactose fragments conjugated to the macrocycle via carbon atom in position 6 of the galactose fragment. Galactose fragments were inserted by alkylation of the amino groups of chlorin e6 amides with one and two ethylene diamine fragments on the macrocycle periphery with triflate of diacetone galactose, followed by removal of diisopropylidene protection by 70% aqueous trifluoroacetic acid. The synthesized compounds were shown to be capable of penetrating the membrane of HeLa cells; they have intense red fluorescence inside the cell and have phototoxic properties towards HeLa cells (upon LED irradiation at 660 nm and light exposure value of 12 J/cm2). These properties, along with water solubility, allow us to consider the synthesized compounds to be promising as potential antitumor PSs and diagnostic compounds for visualizing malignant tumors and creating on their basis preparations for simultaneous diagnostics and therapy of oncological diseases.
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