1 DK5 1-(2,3-dideoxy-3-fluoro-beta-D-arabino-hexopyranosyl)-4-[(phenylcarbonyl)amino]pyrimidin-2(1h)-one 1.000 2 DKY 1-(3-deoxy-3-fluoro-beta-D-glucopyranosyl)-4-[(phenylcarbonyl)amino]pyrimidin-2(1h)-one 0.963