摘要 |
A process for purifying the alpha-keto amide is (1R,5S)-N-[3-amino-1-(cyc lobutylmethyl)-2,3-dioxopropyl]-3-[2(S)-[[[(1,1-dimethylethyl)amino]carbonyl ]-amino]-3,3-dimethyl-1-oxobutyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexan-2(S) -carboxamide via a bisulfite adduct is disclosed.
|