A CRYSTALLINE SYNTHETIC INTERMEDIATE FOR PYRROLIDIN-3-YL-GLYCYLAMINOALKYLBORONATES

摘要

The present invention provides compounds and crystalline forms of dicyclohexylammonium 1-benzyloxycarbonylpyrrolidin-3-yl-N-benzyloxycarbonylglycinate, useful as a synthetic intermediate in the preparation of certain boro-proline based selective inhibitors of the enzyme DPP-IV. Methods of preparing the compounds and the crystalline forms, and methods of using the compounds and crystalline forms in the preparation of certain DPP-IV inhibitors are also provided.