p. 1094 - 1098
(2007/10/02)5-fluoro-1-(5′-O-trityl-β-D-ribofuranosyl)uracil
5'-O-mesyl-2',3'-bis(benzyloxy)-5-fluorouridine
2',3'-bis(benzyloxy)-5-fluorouridine
1-(5-deoxy-2,3-bis(benzyloxy)-β-D-erythro-pent-4-enofuranosyl)-5-fluorouracil
5'-deoxy-4',5-difluoro-2',3'-bis(benzyloxy)uridine