Xu, J.; Tsanakopoulou, M.; Magnani, C. J.; Szabla, R.; Šponer, J. E.; Šponer, J.; Góra, R. W.; Sutherland, J. D. Nat. Chem. 2016, advance online publication DOI: 10.1038/nchem.2664 We describe a long-sought route through ribose aminooxazoline to the pyrimidine β-ribonucleosides…