methyl (E)-3-[1-[(2R,3S,4S,5S)-3-hydroxy-4,5-bis(hydroxymethyl)oxolan-2-yl]-2,4-dioxopyrimidin-5-yl]prop-2-enoate

1-[(2R,3S,4S,5S)-3-hydroxy-4,5-bis(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

1-[(2R,3S,4S,5S)-3-hydroxy-4,5-bis(hydroxymethyl)oxolan-2-yl]-5-iodopyrimidine-2,4-dione

1-[5-O-(tert-butyldiphenylsilyl)-3-deoxy-3-C-(hydroxymethyl)-β-D-arabino-pentofuranosyl]uracil