1-[[3,5-bis(trifluoromethyl)phenyl]methoxy]-3-(3,4-dichlorophenyl)-5-formyl-2(Z)-pentanone O-methyl-oxime 、
Isopropyl-carbamic acid 1-piperidin-4-yl-pyrrolidin-3-yl ester 在
2,2,2-三氟乙醇 、 3 A molecular sieve 、 sodium cyanoborohydride 作用下,
生成 Isopropyl-carbamic acid 1-(1-{5-(3,5-bis-trifluoromethyl-benzyloxy)-3-(3,4-dichloro-phenyl)-4-[(Z)-methoxyimino]-pentyl}-piperidin-4-yl)-pyrrolidin-3-yl ester