tert-Butyl 3-N-(tert-butoxy­carbonyl)methyl­amino-4-methoxy­imino-3-methyl­piperidine-1-carboxyl­ate

摘要

The title compound, C18H33N3O5, was prepared from N-tert-butoxy­carbonyl-4-piperidone using a nine-step reaction, including condensation, methyl­ation, oximation, hydrolysis, esterification, ammonolysis, Hoffmann degradation, tert-butoxy­carbonyl protection and methyl­ation. The E configuration of the methyl­oxime geometry of the compound is confirmed.