Preparation of Spirocyclic β-Proline Esters: Geometrically Restricted Building Blocks for Medicinal Chemistry
摘要:
A series of novel N-Bn-protected spirocyclic -proline esters were prepared using [3+2] cycloaddition and subsequently converted into their corresponding aldehydes. In addition, two novel N-Cbz-protected spirocyclic -proline esters were prepared using intramolecular cyclization starting from simple precursors.