1-(5,6-Di-O-acetyl-2,3-dideoxy-3-phthalimido-2,3-.alpha.-D-arabino-hexofuranosyl)-5-bromouracil 133488-22-9 2,4(1H,3H)-Pyrimidinedione, 5-bromo-1-[5,6-di-O-acetyl-2,3-dideoxy-3-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)-.alpha.-D-arabino-hexofuranosyl]- AIDS-002522 AIDS002522 DiOAcPhthN-D-arab-ddU deriv.