Novel 1,4-naphthoquinone derivatives, processes for their preparation and anticancer compositions containing them as active ingredients

摘要

The present invention relates to a novel 5,8-dimethoxy-1,4-naphthoquinone derivative represented by the following general formula (I), a pharmaceutically acceptable salt thereof, a process for their preparation and an anticancer drug /RTI ;Wherein R_OneIs hydrogen, R₂Represents one of the following general formulas (a), (b), (c) and (d);R₂Is hydrogen, R_OneRepresents one of the groups of the general formulas (a) and (b), and R₃Represents hydrogen or straight chain or branched chain alkyl, R₄Represents acyl.