aM.V. Lomonosov Academy of Fine Chemical Technology, Moscow, Russia
bN.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
cA.N. Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia
dA.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
eInstitute for Physical-Chemical Medicine, Moscow, Russia
Dyes and Pigments, 2015, v.121, pp. 21-29
A new theranostic agent of bacteriochlorin family has been synthesized by the reaction between 131-(2-aminoethylcarbamoyl)bacteriochlorin e and N,Ní-di(carboxypentyl)dicarboindocyanine dye. The structure of the synthesized conjugate was confirmed by nuclear-magnetic resonance spectroscopy. In the conjugate, the efficient energy transfer from the dye to bacteriochlorin was observed. The yield of this process, which was shown to be ~94%, allowed the dye still retain its ability to fluoresce. Accordingly, the fluorescence spectrum contained two major bands corresponding to fluorescence of bacteriochlorin (756 nm) and conjugated dye (672 nm). It was observed that the conjugate efficiently photosensitizes formation of singlet oxygen and photodynamic oxygenation of an organic compound. The data suggest that the obtained synthetic conjugate is promising for application in both fluorescence diagnostics and photodynamic treatment of tumors.