PROCÉDÉ DE PRÉPARATION DE (2R,5S,13AR)-7,9-DIOXO-10-((2,4,6-TRIFLUOROBENZYL)CARBAMOYL)-2,3,4,5,7,9,13,13 A-OCTAHYDRO-2,5-MÉTHANOPYRIDO[1', 2': 4,5]PYRAZINO[2,1-B][1,3]OXAZÉPIN-8-OLATE ET SA FORME POLYMORPHE
The present invention relates to process for the preparation of sodium (2R,5S,13aR)-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido [1',2':4,5] pyrazino[2,1-b] [1,3] oxazepin-8-olate of Formula-I and its polymorphic form thereof.La présente invention concerne un procédé de préparation de (2R,5S,13aR)-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro -2,5-méthanopyrido[1',2': 4,5]pyrazino[2,1-b] [1,3]oxazépin-8-olate de formule-I et sa forme polymorphe.