Add time:09/02/2019         Source:sciencedirect.com

We report the synthesis of a new type of a caged L-leucyl-L-leucine methyl ester, a sugar derivative 2, and study its photochemical and immunological properties. Compared with those of the previously reportedo-nitrobenzyl caged compound, 1, and another new 4, 5-dimethoxy-2-nitorobenzyl caged compound 3, 2 was found to be almost 30 times more soluble in PBS containing 1% DMSO, and released leucyl-leucine methyl ester upon irradiation more efficiently than 1. Efficiency of induction of apoptosis of HL60 cells by irradiation of a solution containing 2 was only slightly lower than that by leucyl-leucine methyl ester itself.

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