Efficient asymmetric syntheses, determination of absolute configurations and biological activities of 1-[4,4-bis(4-fluorophenyl)butyl]-4-[2-hydroxy-3-(phenylamino)propyl]piperazine as a novel potent dopamine uptake inhibitor in the central nervous system
作者:Makoto Kimura、Tomoko Masuda、Koji Yamada、Masaki Mitani、Nobuo Kubota、Nobuyuki Kawakatsu、Kenichi Kishii、Masato Inazu、Yuji Kiuchi、Katsuji Oguchi、Takayuki Namiki
DOI:10.1016/j.bmc.2004.02.041
日期:2004.6
An efficient asymmetric synthesis of the chiral N-(3-chloro-2-hydroxypropyl)anilines (2a and 2b) was achieved through the regioselective ring-opening reaction of chiral epichlorohydrin with aniline. This was applied to an asymmetric synthesis of the enantiomers of 1-[4,4-bis(4-fluorophenyl)butyl]-4-[2-hydroxy-3-(phenylamino)propyl]piperazine 1 as a novel potent dopamine uptake inhibitor. Both enantiomers
通过手性表氯醇与苯胺的区域选择性开环反应,实现了手性N-(3-氯-2-羟丙基)苯胺(2a和2b)的有效不对称合成。将其用于新型强效多巴胺摄取抑制剂1- [4,4-双(4-氟苯基)丁基] -4- [2-羟基-3-(苯基氨基)丙基]哌嗪1的对映异构体的不对称合成。可以通过三步合成法分别以良好的总收率和100%ee的光学纯度合成两种对映体三盐酸盐4a.3HCl和4b.3HCl。使用改进的Mosher方法,使用相关化合物,中间体(2a和2b)和游离碱(4a和4b),确定4a.3HCl和4b.3HCl的绝对构型。分析结果表明,4a.3HCl和4b.3HCl具有(S)-和(R)-构型,分别进行了一系列反应以提供它们,而对手性中心的立体化学没有明显影响。在体外药理学评估中,4a.3HCl和4b.3HCl显示出有效的多巴胺转运蛋白结合亲和力,高的多巴胺,适度的5-羟色胺和弱的去甲肾上腺素摄取抑制活性,并且4a