US20220177482A1 - PROCESS FOR THE PREPARATION OF N-((1R,2S,5R)-5-(TERT-BUTYLAMINO)-2-((S)-3-(7-TERT-BUTYLPYRAZOLO[1,5-A][1,3,5]TRIAZIN-4-YLAMINO)-2-OXOPYRROLIDIN-1-YL)CYCLOHEXYL)ACETAMIDE