1-Methylene-1-deoxy-D-glucopyranose

2,6-anhydro-1-deoxygluco-hept-1-enitol

2,6-Anhydro-1-deoxy-D-gluco-1-heptenitol

2,6-Anhydro-1-deoxy-1,2-didehydro-D-gluco-heptitol