4'-Bromoacetophenone analogs, which are able to generate monophenyl radical
s capable of hydrogen atom abstraction, were investigated as possible photo
inducibie DNA cleaving agents. The potential of 4'-bromoacetophenone as a p
ossible new DNA cleaver is explored. Pyrrolecarboxatmid conjugated 4'-bromo
acetophenones, in particular, DNA cleaving activity and sequence-selectivit
y on the contiguous AT base pair sites.