rac-(2'S,3'R,4'S,5'R)-6-chloro-4'-(3-chloro-2-fluorophenyl)-2'-(2,2-dimethylpropyl)-2-oxo-1,2-dihydrospiro[indole-3,3'-pyrrolidine]-5'-carboxylic acid trifluoroacetic acid salt 、
N,N-二异丙基乙胺 、
二苯基次膦酰氯 、
2-methoxy-4-(2-methylsulfanyl-ethoxy)-phenylamine 以to give chiral (2′S,3′R,4′S,5′R)-6-chloro-4′-(3-chloro-2-fluoro-phenyl)-2′-(2,2-dimethyl-propyl)-2-oxo-1,2-dihydro-spiro[indole-3,3′-pyrrolidine]-5′-carboxylic acid [2-methoxy-4-(2-methylsulfanyl-ethoxy)-phenyl]-amide as a off white solid (Yield 0.2 g, 44%)的产率得到(2'S,3'R,4'S,5'R)-6-chloro-4'-(3-chloro-2-fluoro-phenyl)-2'-(2,2-dimethyl-propyl)-2-oxo-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-5'-carboxylic acid [2-methoxy-4-(2-methylsulfanyl-ethoxy)phenyl]amide