bromo-(5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-acetic acid methyl ester | 620967-16-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: bromo-(5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-acetic acid methyl ester
• CAS: 620967-16-0
• 化学式: C₇H₈BrN₃O₄S
• 分子量: 310.128
• InChiKey: XGLBAPBQXQGKRP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.33
• 重原子数：
  16.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  90.41
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  bromo-(5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-acetic acid methyl ester 在 吡啶-N-氧化物 作用下， 以 乙腈 为溶剂， 反应 1.0h， 生成 (5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-oxo-acetic acid methyl ester
  参考文献：
  名称：

  Relationships between structure, antibacterial activity, serum stability, pharmacokinetics and efficacy in 3-(heteroarylthio)cephems. Discovery of RWJ-333441 (MC-04,546)

  摘要：

  SAR studies in a series of related 3-(heteroarylthio)cephems determined that a relatively high chemical reactivity of the beta-lactam ring, modulated by electronic effects of substituents at C-3 and C-7, is necessary to achieve high in vitro activity against methicillin-resistant Staphylococcus aureus (MRSA). Such high reactivity results in lowered hydrolytic stability and concomitantly increases susceptibility to beta-lactam ring opening mediated by serum enzymes. Therefore, optimization of anti-MRSA activity versus stability toward serum-mediated degradation required a fine balance of substituent effects. Serum stability studies (measured as percentage of parent drug degraded after 60 min incubation) revealed up to 80-fold difference in degradation rate in a series of closely related (3-heteroarylthio)cephems. Of the compounds evaluated, RWJ-333441 (MC-04,546) possessed the best balance of serum stability (6% degradation after 60 min incubation) and in vitro activity versus MRSA (S. aureus COL MIC-I mug/mL). Accordingly, RWJ-333441 displayed excellent in vivo efficacy versus methicillin-susceptible Staphylococcus aureus (MSSA, ED50=0.39 mg/kg in mouse sepsis model with S. aureus Smith) and good pharmacokinetic properties in the rat (Cl-total=0.39 L/h/kg). (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(02)00431-5
• 作为产物：
  描述：

  (5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-acetic acid 在 氯化亚砜 、 溴 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 16.0h， 生成 bromo-(5-methoxycarbonylamino-[1,2,4]thiadiazol-3-yl)-acetic acid methyl ester
  参考文献：
  名称：

  Relationships between structure, antibacterial activity, serum stability, pharmacokinetics and efficacy in 3-(heteroarylthio)cephems. Discovery of RWJ-333441 (MC-04,546)

  摘要：

  SAR studies in a series of related 3-(heteroarylthio)cephems determined that a relatively high chemical reactivity of the beta-lactam ring, modulated by electronic effects of substituents at C-3 and C-7, is necessary to achieve high in vitro activity against methicillin-resistant Staphylococcus aureus (MRSA). Such high reactivity results in lowered hydrolytic stability and concomitantly increases susceptibility to beta-lactam ring opening mediated by serum enzymes. Therefore, optimization of anti-MRSA activity versus stability toward serum-mediated degradation required a fine balance of substituent effects. Serum stability studies (measured as percentage of parent drug degraded after 60 min incubation) revealed up to 80-fold difference in degradation rate in a series of closely related (3-heteroarylthio)cephems. Of the compounds evaluated, RWJ-333441 (MC-04,546) possessed the best balance of serum stability (6% degradation after 60 min incubation) and in vitro activity versus MRSA (S. aureus COL MIC-I mug/mL). Accordingly, RWJ-333441 displayed excellent in vivo efficacy versus methicillin-susceptible Staphylococcus aureus (MSSA, ED50=0.39 mg/kg in mouse sepsis model with S. aureus Smith) and good pharmacokinetic properties in the rat (Cl-total=0.39 L/h/kg). (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(02)00431-5