Concise Route to the Chiral Pyrrolidine Core of Selective Inhibitors of Neuronal Nitric Oxide
作者:Fengtian Xue、Wenxin Gu、Richard B. Silverman
DOI:10.1021/ol902109t
日期:2009.11.19
2-(((3R,4R)-4-(Allyloxy)-1-benzylpyrrolidin-3-yl)methyl)-6-(2,5-dimethyl-1H-pyrrol-1-yl)-4-methylpyridine (2), a key intermediate for the preparation of novel neuronal nitric oxide synthase (nNOS) inhibitors, is synthesized using diisopropyl (R)-(+)-malate as the starting material. The key steps involve a Frater−Seebach diastereoselective alkylation and a fast intramolecular cyclization.
2-(((3 R ,4 R )-4-(烯丙氧基)-1-苄基吡咯烷-3-基)甲基)-6-(2,5-二甲基-1H-吡咯-1-基)-4-甲基吡啶 ( 2 ) 是制备新型神经元一氧化氮合酶 (nNOS) 抑制剂的关键中间体,它是以 ( R )-(+)-苹果酸二异丙酯为起始原料合成的。关键步骤包括 Frater-Seebach 非对映选择性烷基化和快速分子内环化。