Lactam-aldehyde compound and process of preparing same

摘要

A lactam-aldehyde compound represented by the formula (I) shown in the specification. The lactam-aldehyde compound may be prepared by subjecting a lactone-imine compound represented by formula (III) shown in the specification to an isomerization reaction. The precursor lactone-imine compound may be prepared by rearrangement of a 3,5-dioxa-12-azawurtzitane compound.