Enantiomerically Pure Synthesis of β-Substituted γ-Butyrolactones: A Key Intermediate to Concise Synthesis of Pregabalin
作者:Taedong Ok、Aram Jeon、Joohee Lee、Jung Hak Lim、Chang Seop Hong、Hee-Seung Lee
DOI:10.1021/jo0709605
日期:2007.9.1
have developed a general, convenient, and scalable synthetic method for enantiomerically pure β-substituted γ-butyrolactones, with either configuration, via nucleophilic cyclopropane ring opening of (1S,5R)- or (1R,5S)-bicyclic lactone followed by decarbethoxylation. The utility of our method was demonstrated by streamlined synthesis of pregabalin ((S)-3-isobutyl-γ-aminobutyric acid), an anticonvulsant
已知手性β-取代的γ-丁内酯是许多生物活性化合物(例如γ-氨基丁酸(GABA)衍生物和木脂素)的重要中间体。我们已经开发了一种通用,便捷且可扩展的合成方法,用于对映体纯的β-取代的γ-丁内酯,通过(1 S,5 R)-或(1 R,5 S)-双环的亲核环丙烷开环而具有两种构型内酯,然后进行去甲乙氧基化。我们的方法的实用性通过简化的普瑞巴林((S)-3-异丁基-γ-氨基丁酸)的合成得到了证明,普瑞巴林是一种用于治疗周围神经性疼痛的抗惊厥药物。