Enantioselective Synthesis of Spirocyclic Aminochroman Derivatives According to the CN(<i>R</i>,<i>S</i>) Strategy
作者:Grégoire Pavé、Jean-Michel Léger、Christian Jarry、Marie-Claude Viaud-Massuard、Gérald Guillaumet
DOI:10.1021/jo026228h
日期:2003.2.1
Enantiomerically pure (3'R)- and (3'S)-3',4'-dihydrospiro[piperidine-2,3'(2'H)-benzopyran]s (R)-10 and (S)-10 were successfully synthesized according to the CN(R,S) methodology with the aim of serving as a pattern for the generation of related spirocyclic compounds. Two different synthetic pathways were studied starting from 2-cyano-6-phenyloxazolopiperidine (-)-2. One of them was selected and used
对映体纯的(3'R)-和(3'S)-3',4'-二氢螺[哌啶-2,3'(2'H)-苯并吡喃] s(R)-10和(S)-10成功合成根据CN(R,S)方法进行研究,目的是作为产生相关螺环化合物的模式。从2-氰基-6-苯基恶唑并哌啶(-)-2开始研究了两种不同的合成途径。选择其中之一并分别用于从(-)-2和(+)-2开始制备胺(R)-17和(S)-17。使用β-环糊精作为手性选择剂,通过毛细管电泳确定所有最终氨基苯并二氢吡喃衍生物的对映体纯度。