A PROCESS FOR PREPARING 7-[(3R)-3-AMINO-L-OXO-4-(2,4,5TRIFLUOROPHENYL)BUTYI]- 5,6,7,8-TETRAHYDRO-3-(TRIFLUOROMETHYL)-L,2,4-TRIAZOLO[4,3-A]PYRAZINE HYDROCHLORIDE MONOHYDRATE AND ITS CRYSTALLINE FORM

摘要

The present invention discloses industrially feasible process for preparation of 7-[(3R)-3- amino-l-oxo-4-(2,4,5trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluorornethyl)-l,2,4- triazolo[4,3-a]pyrazine Hydrochloride monohydrate.