organic compounds
Open access
The title δ-lactone, C9H14O5, formed in high diastereoselectivity by the Kiliani reaction of a protected 1-deoxyketose, adopts a boat conformation in which an OH group occupies a flagpole position.
organic compounds
Open access
The title compound, C6H10O5·H2O, formed by the hydrolysis of a δ-lactone, is shown unequivocally to be a γ-lactone. The diol has a trans configuration.
organic compounds
Open access
The configuration of the title azide, C9H13N3O4, prepared from an arabinonolactone, is established by the X-ray crystal structure. The methyl group on the azide-substituted C atom is in a flagpole position. There are two molecules in the asymmetric unit.
organic compounds
Open access
The relative stereochemistry at the quaternary C atom in the title compound, C7H12O6, a 1,4-lactone formed from a protected D-ribonolactone, is firmly established by X-ray crystallographic analysis.