Abstract Glycosylation of silylated pyrimidines using a phenyl 2-deoxy-3-O-(N-benzoyl) carbamoyl-1-thio-D-erythro-pentofuranoside yielded 2-deoxy-β-ribonucleosides in good yields with excellent anomeric selectivity. This prototype 3-O-carbamate directing group was readily formed and removed in high yields.
