US7754694: Pyrrolo[2,1-c][1,4]benzodiazepine-glycoside prodrug useful as a selective anti tumor agent

The invention provides pyrrolo[2,1-c][1,4]benzodiazepine-glycoside prodrug of general formula 1(a-b), useful as selective anticancer agents. The invention also provides a process for the preparation of pyrrolo[2,1-c][1,4]benzodiazepine-glycoside prodrugs of general formula 1(a-b). This invention also provides activation of these prodrugs by E.coli.?.galactosidase and envisaged that these molecules are toxic to human cancer cell lines in the presence of the enzyme E.coli.?-galactosidase. The prodrugs 1a and 1b were also found to be toxic to human cancer Hep G2 cells even in the absence of the E.coli.?-galactosidase. The toxic effect of the molecules when activated was similar to that of the parent molecules 6a and 6b, respectively.