1-(3-Amino-2,3-dideoxy-.alpha.-D-arabino-hexofuranosyl)uracil 133488-24-1 2,4(1H,3H)-Pyrimidinedione, 1-(3-amino-2,3-dideoxy-.alpha.-D-arabino-hexofuranosyl)- 3NH-D-arab-ddU deriv. AIDS-002524 AIDS002524