A selective synthesis of N-2-deoxyguanosine adducts derived from 4-ami
nobiphenyl (ABP) is described. The reactions of 3',5'-O-bis(tert-butyl
dimethyl)-2'-deoxyxanthosine with 3-amino-4-aceiaminobiphenyl and 4-hy
drazinobiphenyl, respectively, are the key steps. Successive removal o
f the protecting groups from the protected adducts leads to the free a
dducts 3-(deoxyguanosine-N-2-yl)-acetyl-ABP and N-(deoxyguanosyl-N-2-y
l)-ABP, respectively.