to 2'-deoxyribonolactone. The nitro-indole nucleoside derivatives 1a and 1b were prepared and their conformation was determined by X-ray crystallography and NMR spectroscopy. The photoreaction of these nucleosides gave the corresponding deoxyribonolactone derivatives efficiently, with release of 7-nitrosoindole. This reaction was successfully applied to synthesis of oligonucleotides containing the
A highly efficient synthetic method for incorporation of the deoxyribonolactone lesion into oligonucleotides was developed using the photochemical properties of 7-nitroindole.
A Highly Efficient Synthesis of Oligodeoxyribonucleotides Containing the 2‘-Deoxyribonolactone Lesion
Abstract A new convenientsynthesis of protoanemonin (1) starting from 2-deoxy-d-ribose (3) is described. A key step in the sequence is the successive β- and δ-eliminations of 3,5-di-O-p-toluoyl-2-deoxy-d-ribono-1,4-lactone (6).