Photochemical generation of C4'-oxidized abasic site containing oligonucleotide and its amine modification reaction.

Abstract

We studied photochemical generation of oligodeoxynucleotide (ODN) containing C4'-oxidized abasic site (1) from its caged precursor 3. Photoirradiation of 3 at 365 nm followed by amine treatment under neutral conditions afforded the lactam (2) efficiently. Duplexed ODN 3 was converted to 1 faster and more efficiently than single stranded 3, whereas amine treatment of 1 formed from single stranded 3 resulted in slightly faster lactam formation than with duplex.