申请人:Abbott Laboratories
公开号:US05424444A1
公开(公告)日:1995-06-13
A novel process for preparing enantiomerically-pure 3-methyl-5-(1-(C.sub.1 -C.sub.3 -alkyl)-2-pyrrolidinyl)isoxazole in high yield, wherein a protected pyrrolidine or 2-oxo-pyrrolidine starting material is reacted with a suitable organic anion and a resulting beta-keto oxime intermediate is cyclized and dehydrated, as well as intermediates useful in the preparation thereof.
一种制备对映纯的3-甲基-5-(1-(C.sub.1-C.sub.3-烷基)-2-吡咯烷基)异噁唑的新工艺,产率高,其中保护的吡咯烷或2-氧代吡咯烷起始物质与适当的有机阴离子反应,生成的β-酮肟中间体环化和脱水,以及在其制备中有用的中间体。