9-<3-(tert-butyldimethylsilyloxymethyl)pyrrolidin-1-yl>guanine

1-<3-(tert-butyldimethylsilyloxymethyl)pyrrolidin-1-yl>-5-chlorouracil

1-<3-(tert-butyldimethylsilyloxymethyl)pyrrolidin-1-yl>-5-chlorocytosine

Toluene-4-sulfonic acid 2-(tert-butyl-dimethyl-silanyloxymethyl)-4-oxo-butyl ester

1-[3-(tert-Butyl-dimethyl-silanyloxymethyl)-pyrrolidin-1-yl]-1H-pyrimidine-2,4-dione