Kataoka Masanori, Hirano Taisuke, Kuroda Kenji, Hayakawa Yoshihiro
Research Center for Computational Science, National Institutes for Natural Sciences, Okazaki 444-8787, Japan.
Nucleic Acids Symp Ser (Oxf). 2005(49):121-2. doi: 10.1093/nass/49.1.121.
A peptide nucleic acid (PNA) oligomer containing pyrimido[4,5-d]pyrimidine-2,4,5,7-(1H,3H,6H,8H)-tetraone (PPT) as a nucleobase, which is expected to serve as a universal base, was synthesized.