benzyl (2S)-2-[(3S,4R)-4-chloro-3-phthalimido-2-oxazetidin-1-yl]-2-(1-chlorothio-1-methylethyl)-acetate | 182268-25-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: benzyl (2S)-2-[(3S,4R)-4-chloro-3-phthalimido-2-oxazetidin-1-yl]-2-(1-chlorothio-1-methylethyl)-acetate
• 英文别名: benzyl (2S)-2-[(2R,3S)-2-chloro-3-(1,3-dioxoisoindol-2-yl)-4-oxoazetidin-1-yl]-3-chlorosulfanyl-3-methylbutanoate
• CAS: 182268-25-3
• 化学式: C₂₃H₂₀Cl₂N₂O₅S
• 分子量: 507.394
• InChiKey: RNGJRLHIAHTZEF-SQNIBIBYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.84
• 重原子数：
  33.0
• 可旋转键数：
  7.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  83.99
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  benzyl (2S)-2-[(3S,4R)-4-chloro-3-phthalimido-2-oxazetidin-1-yl]-2-(1-chlorothio-1-methylethyl)-acetate 在 对甲苯磺酸 、 臭氧 、 一水合肼 、 tin(ll) chloride 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 6.0h， 生成 benzyl (-)-(6S,7S)-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
  参考文献：
  名称：

  Syntheses of (6S)-Cephalosporins from 6-Aminopenicillanic Acid

  摘要：

  Two practical routes to (6S,7S)-cephalosporins from 6-aminopenicillanic acid (6-APA) are described. In the first, 6-APA was converted to (2S,4S,5S,6S)-penicillin sulfoxide 49, which underwent Morin ring expansion to a protected (6S,7S)-cephem 50. In the second, ester 15 was converted to (2S,4S,5S,6R)-penicillin sulfoxide 58, which was then transformed into (6S,7R)-cephem 59. Different methods for the epimerisation of the C-7 position of cephem 59 were examined. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(00)00486-5
• 作为产物：
  描述：

  benzyl (+)-(2S,5R,6R)-3,3-dimethyl-7-oxo-6-phthalimido-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 在 氯 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氯化碳 、 二氯甲烷 为溶剂， 反应 2.0h， 生成 benzyl (2S)-2-[(3S,4R)-4-chloro-3-phthalimido-2-oxazetidin-1-yl]-2-(1-chlorothio-1-methylethyl)-acetate
  参考文献：
  名称：

  Syntheses of (6S)-Cephalosporins from 6-Aminopenicillanic Acid

  摘要：

  Two practical routes to (6S,7S)-cephalosporins from 6-aminopenicillanic acid (6-APA) are described. In the first, 6-APA was converted to (2S,4S,5S,6S)-penicillin sulfoxide 49, which underwent Morin ring expansion to a protected (6S,7S)-cephem 50. In the second, ester 15 was converted to (2S,4S,5S,6R)-penicillin sulfoxide 58, which was then transformed into (6S,7R)-cephem 59. Different methods for the epimerisation of the C-7 position of cephem 59 were examined. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(00)00486-5

文献信息

• Asymmetric Synthesis of New β-Lactam Lipopeptides as Bacterial Signal Peptidase I Inhibitors
  作者：Céline Crauste、Matheus Froeyen、Jozef Anné、Piet Herdewijn

  DOI：10.1002/ejoc.201100148

  日期：2011.7

  The transmembrane bacterial enzyme, signal peptidase I, is recognized as being a promising target for reducing the emergence of drug resistance. The asymmetric synthesis and the biological evaluation of original β-lactam lipopeptides have been performed to discover potent signal peptidase inhibitors. The importance of the azetidinone motif of these lipopeptides has been demonstrated and can serve as

  跨膜细菌酶，信号肽酶 I，被认为是减少耐药性出现的有希望的目标。已经进行了原始 β-内酰胺脂肽的不对称合成和生物学评估，以发现有效的信号肽酶抑制剂。这些脂肽的氮杂环丁酮基序的重要性已经得到证实，并且可以作为开发和改善肽模拟物中 β-内酰胺反应性的起点。