Crystalline form of n-{(2s)-2-[(morpholin-4-yl-acetyl)amino]-4-phenylbutanoyl}-l-leucyl-n-{(2s)-4-methyl-1-[(2r)-2-methyloxiran-2-yl]-1-oxopentan-2-yl}-l-phenylalaninamide

摘要

The invention relates to crystalline peptide keto epoxide compounds, methods of their preparation, and related pharmaceutical compositions. This invention also relates to methods for the preparation of amino acid keto-epoxides. Specifically, allylic ketones are stereoselectively converted to the desired keto epoxides.