PREPARATION METHOD OF 5-[[2(R)-[1(R)-[3,5-BIS(TRIFLUOROMETHYL) PHENYL]ETHOXY]-3(S)-4-FLUOROPHENYL-4-MORPHOLINYL]METHYL]-1,2-DIHYDRO-3H-1,2,4-TRIAZOLE-3-ONE
申请人:Ji Jianxin
公开号:US20130109853A1
公开(公告)日:2013-05-02
Disclosed is a synthesis method of a compound of formula 1,5-[[2(R)-[1(R)-[3,5-bis(trifluoromethyl)phenyl]ethoxyl]-3(S)-4-fluorophenyl-4-morpholinyl]methyl]-1,2-dihydro-3H-1,2,4-triazole-3-one (i.e. aprepitant), which comprises cyclizing a compound of formula 4 in a solvent, wherein R is C
1
-C
5
alkyl. The intermediate for preparing aprepitant is also disclosed. The present method is especially suitable for industrial production of aprepitant.
本发明公开了一种化合物1,5-[[2(R)-[1(R)-[3,5-双(三氟甲基)苯基]乙氧基]-3(S)-4-氟苯基-4-吗啡啶基]甲基]-1,2-二氢-3H-1,2,4-三唑-3-酮(即阿普利坦)的合成方法,包括在溶剂中环化化合物4,其中R是C1-C5烷基。本发明还公开了制备阿普利坦的中间体。本方法特别适用于阿普利坦的工业生产。