Maruyama Tokumi, Moriwaka Nobuyasu, Demizu Yosuke, Ohtsuka Masami
Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, Shido 1314-1, Sanuki City, Kagawa 769-2193, Japan.
Nucleic Acids Symp Ser (Oxf). 2005(49):109-10. doi: 10.1093/nass/49.1.109.
O6-methylguanosine derivative was treated with sodium nitrite or isoamylnitrite in the presence of the carboxylic acid to give the purin-2-yl carboxylate (2), an unusual product bearing a carboxylic group at 2-position of purine moiety.