Abstract Reactions of 2-amino-2-deoxy- d -glucose and its N -butyl derivative with 1-ethoxy-2-nitroethene produced 2-deoxy-2-[(2-nitrovinyl)amino]- d -glucose ( 6 ) and its N -butyl derivative ( 8 ), respectively, in high yields. The spectra of these compounds indicated that they were α,β-anomeric mixtures, and also that 6 existed as equilibrium mixtures of the Z - and E -geometrical isomers, the proportions