A 2-nitroimidazole carbamate prodrug of 5-amino-1-(chloromethyl)-3-[5,6,7-trimethoxyindol-2-yl)carbonyl]-1,2-dihydro -3H-benz[e]indole (amino-seco-CBI-TMI) for use with ADEPT and GDEPT

Add time:09/28/2019    Source:infona.pl

The synthesis of a 2-nitroimidazol-5-ylmethyl carbamate prodrug 10 of the potent minor groove alkylating agent amino-seco-CBI-TMI 3 is described. Chemical, radiolytic, and enzymic reductions of a model 2-nitroimidazol-5-yl carbamate 8 show release of the amine effector upon reduction. Prodrug 10 gives a ten fold increase in cytotoxicity against human ovarian carcinoma SKOV3 cells in the presence of E. coli B nitroreductase (NTR) and a 21-fold increase in cytotoxicity against a SKOV3 cell line (SC3.2) transfected with the gene for NTR. The cytotoxicity of 10 increased 15- to 40-fold under hypoxia. Prodrug 10 has significant potential as a prodrug for use in ADEPT and GDEPT applications, and as a hypoxia-selective cytotoxin.

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