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6-Azauracil-resistant variants of Haplopappus gracilis (Nutt.) Gray and Datura innoxia Mill. lack activity of uracil… Expand The cytostatic drug 6‐azauridine is converted in vivo to 6‐azauridine‐5′‐phosphate (z6Urd‐5′‐P), which blocks the enzyme… Expand 6-Azauridine-5’-monophosphate (5’-azaUMP, I) is known to be a potent antileukemic agent [l] and to determine whether this… Expand This report includes results demonstrating the existence of orotidine-5'-phosphate decarboxylase and orotidine-5'-phosphate… Expand Human diploi(l cell strains grown in 6-azauridine (6-AZUR) acquire increased activity for orotidine-.5v'-monophosphate (OM\[P… Expand Abstract The effects of 6-azauracil and its ribonucleoside—6-azauridine—on the central nervous system were compared in mice. It… Expand The pyrimidine analog 6-azauridine (6-AZUR) interrupts the major pathway for the de novo biosynthesis of pyrimidine nucleotides… Expand