Synthesis of 1-β-D-ribopyranosyl- and ribofuranosyl-6-nitroindole and indoline for the phosphotriester oligonucleotide synthesis

The glycosylation reaction of 6-nitroindoline with 5-tritylribose led to the synthesis of the 1--D-ribofuranoside and 1--D-ribopyranoside of 6-nitroindoline, the dehydrogenation of which resulted in the isolation of the corresponding 1--D-ribopyranoside and 1--D-ribofuranoside of 6-nitroindole; the last with protecting groups are suitable for utilization in oligonucleotide synthesis.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1500–1506, November, 1990.