NOVEL PROCESS FOR THE PREPARATION OF TRANS-3- ETHYL-2,5- DIHYDRO-4- METHYL-N-[2-[ 4-[[[[(4-METHYL CYCLOHEXYL) AMINO]CARBONYL] AMINO]SULFONYL] PHENYL]ETHYL] -2-OXO-1H-PYRROLE -1-CARBOXAMIDE

摘要

The present invention provides a novel process for preparation of trans-3-ethyl 2,5- dihydro-4-methyl-N-[2-[ 4-[[[[(4-methyl cyclohexyl)amino] carbonyl]amino] sulfonyl]phenyl] ethyl]-2-oxo-1H -pyrrole-1-carboxamide via the novel intermediate compounds of formula (3).