(1S,5R)-2-<<(1-methyl-1H-tetrazol-5-yl)thio>acetyl>-2,6-diazabicyclo<3.2.0>heptan-7-one | 214837-11-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (1S,5R)-2-<<(1-methyl-1H-tetrazol-5-yl)thio>acetyl>-2,6-diazabicyclo<3.2.0>heptan-7-one
• 英文别名: (1S,5R)-2-[2-(1-methyltetrazol-5-yl)sulfanylacetyl]-2,6-diazabicyclo[3.2.0]heptan-7-one
• CAS: 214837-11-3
• 化学式: C₉H₁₂N₆O₂S
• 分子量: 268.299
• InChiKey: GIGRYONPGRHGNF-VDTYLAMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.7
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  118
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (1S,5R)-2-<<(1-methyl-1H-tetrazol-5-yl)thio>acetyl>-2,6-diazabicyclo<3.2.0>heptan-7-one 在 三氧化硫 N,N-二甲基甲酰胺络合物 、 碳酸氢钠 作用下， 生成 Sodium; (1S,5R)-2-[2-(1-methyl-1H-tetrazol-5-ylsulfanyl)-acetyl]-7-oxo-2,6-diaza-bicyclo[3.2.0]heptane-6-sulfonate
  参考文献：
  名称：

  Structure-Based Design of β-Lactamase Inhibitors. 1. Synthesis and Evaluation of Bridged Monobactams

  摘要：

  Bridged monobactams are novel, potent, mechanism-based inhibitors of class C beta-lactamases, designed using X-ray crystal structures of the enzymes. They stabilize the acyl-enzyme intermediate by blocking access of water to the enzyme-inhibitor ester bond. Bridged monobactams are selective class C beta-lactamase inhibitors, with half-inhibition constants as low as 10 nM, and are less effective against class A and class B enzymes (half-inhibition constants > 100 mu M) because of the different hydrolysis mechanisms in these classes of beta-lactamases. The stability of the acyl-enzyme complexes formed with class C beta-lactamases (half-lives up to 2 days were observed) enabled determination of their crystal structures. The conformation of the inhibitor moiety was close to that predicted by molecular modeling, confirming a simple reaction mechanism, unlike those of known beta-lactamase inhibitors such as clavulanic acid and penam sulfones, which involve secondary rearrangements. Synergy between the bridged monobactams and beta-lactamase-labile antibiotics could be observed when such combinations were tested against strains of Enterobacteriaceae that produce large amounts of class C beta-lactamases. The minimal inhibitory concentration of the antibiotic of more than 64 mg/L could be decreased to 0.25 mg/L in a 1:4 combination with the inhibitor.

  DOI：

  10.1021/jm980023c
• 作为产物：
  描述：

  benzyl (1S,4S,5S)-6-(3,4-dimethoxybenzyl)-4-hydroxy-7-oxo-2,6-diazabicyclo<3.2.0>heptane-2-carboxylate 在 palladium on activated charcoal 吡啶 、 sodium tetrahydroborate 、 dipotassium peroxodisulfate 、 TEA 、 氢气 、 碳酸氢钠 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 7.0h， 生成 (1S,5R)-2-<<(1-methyl-1H-tetrazol-5-yl)thio>acetyl>-2,6-diazabicyclo<3.2.0>heptan-7-one
  参考文献：
  名称：

  Structure-Based Design of β-Lactamase Inhibitors. 1. Synthesis and Evaluation of Bridged Monobactams

  摘要：

  Bridged monobactams are novel, potent, mechanism-based inhibitors of class C beta-lactamases, designed using X-ray crystal structures of the enzymes. They stabilize the acyl-enzyme intermediate by blocking access of water to the enzyme-inhibitor ester bond. Bridged monobactams are selective class C beta-lactamase inhibitors, with half-inhibition constants as low as 10 nM, and are less effective against class A and class B enzymes (half-inhibition constants > 100 mu M) because of the different hydrolysis mechanisms in these classes of beta-lactamases. The stability of the acyl-enzyme complexes formed with class C beta-lactamases (half-lives up to 2 days were observed) enabled determination of their crystal structures. The conformation of the inhibitor moiety was close to that predicted by molecular modeling, confirming a simple reaction mechanism, unlike those of known beta-lactamase inhibitors such as clavulanic acid and penam sulfones, which involve secondary rearrangements. Synergy between the bridged monobactams and beta-lactamase-labile antibiotics could be observed when such combinations were tested against strains of Enterobacteriaceae that produce large amounts of class C beta-lactamases. The minimal inhibitory concentration of the antibiotic of more than 64 mg/L could be decreased to 0.25 mg/L in a 1:4 combination with the inhibitor.

  DOI：

  10.1021/jm980023c