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(R)-丙叉甘油醛对映选择性合成取代的β-内酰胺(英文)

Enantiospecific synthesis of β lactams from (R) glyceraldehyde acetonide
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摘要 由(R)-丙叉甘油醛得到的手性亚胺1能与烯酮2 在温和条件下迅速反应。而由混合酸酐或双烯酮代替酰氯,中间体也可能是烯酮或烯醇5。[2+ 2]环加成在手性亚胺和烯酮2或烯醇5之间进行,前者主要生成顺式结构的β-内酰胺,后者为3-乙酰基反式异构体,且均有较高的立体选择性和较高的化学收率。 Chiral imine 1 derived from (R) glyceraldehyde acetonide could rapidly react with ketenes 2 which was converted from mixed anhydride or acid chloride under mild conditions. Similarly, using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 may be obtained. The main procedure, a classical [2+2] cycloaddition took place between the chiral imine 1 and ketenes 2 or enol 5, with the former to produce cis β Lactams 3 and with the latter to trans , but both were with high stereoselection and in chemical yield.
出处 《中国抗生素杂志》 CAS CSCD 北大核心 1999年第5期339-343,391,共6页 Chinese Journal of Antibiotics
关键词 Β-内酰胺 立体控制 手性药物 丙叉甘油醛 Lactams Stereo control Chiral drug
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参考文献2

  • 1Li H G,The Fifth Chinese-Japan Molecular Drug Design and Development Symposium,1997年,32页
  • 2Hart D J,Chem Rev,1989年,89卷,1447页

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