Synthesis of novel gem-difluorinatedcyclopropane hybrids: Applications for DNA cleavage agents switched by photo irradiation

Abstract A strong DNA cleavage property switched by photo irradiation was found for 9-anthracenecarboxylic acid substituted gem -difluorocyclopropane derivatives; in particular, a clear contrast in the activity was observed between the enantiomers of ( S , S )- and ( R , R )-3-aminomethyl-2,2-difluorocyclopropylmethyl 9-anthracenecarboxylate.