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3-(3S-叔丁氧基)丁二酰亚胺基β-内酰胺的合成及反应的立体选择性

张萍, 刘娜, 王兰芝, 李媛   

  1. 河北师范大学化学与材料科学学院, 石家庄 050016
  • 收稿日期:2008-03-17 修回日期:1900-01-01 出版日期:2009-01-10 发布日期:2009-01-10
  • 通讯作者: 李媛

Synthesis of 3-(3S-t-Butoxyl)succinimidyl-β-lactams and the Stereoselectivity of the Reaction

ZHANG Ping, LIU Na, WANG Lan-Zhi, LI Yuan*   

  1. College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China
  • Received:2008-03-17 Revised:1900-01-01 Online:2009-01-10 Published:2009-01-10
  • Contact: LI Yuan

摘要: S-苹果酸作为手性诱导试剂, 通过Staudinger反应, 合成了8个具有光学活性的新型的β-内酰胺衍生物, 通过1H NMR, IR谱和元素分析对其结构进行了表征, 用1H NMR, 2D NMR谱和单晶X射线衍射法研究了该反应的立体选择性. 结果表明, S-苹果酰亚胺乙酰氯(三乙胺存在下)与Schiff碱的反应具有高度的顺反异构选择性, 反式β-内酰胺是唯一产物; 该反应的非对应异构选择性较好, d.e.值在28%~70%之间.

关键词: β-内酰胺, Schiff碱, 顺反异构选择性, 非对映异构选择性, 立体选择性

Abstract: S-Malic acid is the chiral induction agent widely used in organic synthesis. In order to investigate the stereoselective synthesis of β-lactams, eight new 3-(3S-t-butoxyl)succinimidyl-β-lactam derivatives 2a—2h were obtained by Staudinger reaction using S-malic acid as the chiral induction agent and their structures were confirmed by 1H NMR, IR and elemental analysis. The stereochemistry of the reaction was also investigated by the 1H NMR, 2D NMR and X-ray diffraction analyses methods. The results indicate that the reaction of 3-(3S-t-butoxyl)succinimidyl acetyl chloride with imines(under Et3N) showing very good cis/trans stereoselectivity, and the trans-β-lactam is the only product. The diastereomeric selectivity is also good, the d.e. is between 28%—70%.

Key words: β-Lactam, Schiff base, cis/trans stereoselectivity, Diastereomeric selectivity, Stereoselectivity

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