O5'-benzoyl-2'-bromo-O3'-methanesulfonyl-2'-deoxy-uridine
(2R)-3t-benzoyloxymethyl-11syn-hydroxy-2,3-dihydro-1H-2r,5c-methano-pyrimido[1,2-c][1,3,5]oxadiazepine-9-thione
(2S)-11syn-acetoxy-3t-benzoyloxymethyl-2,3-dihydro-1H-2r,5c-methano-pyrimido[1,2-c][1,3,5]oxadiazepin-9-one
(2R)-3t-benzoyloxymethyl-8-bromo-11syn-hydroxy-2,3-dihydro-1H-2r,5c-methano-pyrimido[1,2-c][1,3,5]oxadiazepin-9-one
2,3'-Imino-1-(β-D-lyxofuranosyl)uracil