Inhibiting guanine oxidation and enhancing the excess-electron-transfer efficiency of a pyrene-modified oligonucleotide by introducing an electron-donating group on pyrene†
Abstract
The introduction of an electron-donating group (e.g., methoxy or piperidinyl) onto the pyrene moiety of 5-(pyrenylethynyl)-2′-deoxyuridine (PyU) increases its DNA-mediated reductive electron-transfer efficiency. In addition, these modifications dramatically inhibit photoinduced guanine oxidation.