trans-Acetonide Controlled endo-Selective Intramolecular Nitrone—Alkene Cycloaddition of Hept-6-enoses: A Facile Entry to Calystegines, Tropanes, and Hydroxylated Aminocycloheptanes.

High-yielding endo-selective intramolecular nitrone−alkene cycloaddition (INAC) reactions of hept-6-enoses controlled by a trans-acetonide to give bridged bicyclo[4.2.1]isoxazolidines exclusively a...