(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-ethoxyimino]-acetylamino}-3-[(2,5-dichloro-3,4-dihydroxy-benzoylamino)-methyl]-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid | 119734-14-4

• 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: (6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-ethoxyimino]-acetylamino}-3-[(2,5-dichloro-3,4-dihydroxy-benzoylamino)-methyl]-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
• 英文别名: (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-ethoxyiminoacetyl]amino]-3-[[(2,5-dichloro-3,4-dihydroxybenzoyl)amino]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
• CAS: 119734-14-4
• 化学式: C₂₂H₂₀Cl₂N₆O₈S₂
• 分子量: 631.474
• InChiKey: JPXJDOBSQFMZNK-KHUPRVCTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  40
• 可旋转键数：
  9
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  270
• 氢给体数：
  6
• 氢受体数：
  13

反应信息

• 作为产物：
  描述：

  (6R,7R)-3-(aminomethyl)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-ethoxyiminoacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 在 ammonium hydroxide 、 三乙胺 作用下， 以 甲醇 、 水 为溶剂， 反应 2.0h， 生成 (6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-ethoxyimino]-acetylamino}-3-[(2,5-dichloro-3,4-dihydroxy-benzoylamino)-methyl]-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
  参考文献：
  名称：

  Pharmacokinetics of catechol cephalosporins. The effect of incorporating substituents into the catechol moiety on pharmacokinetics in a marmoset model

  摘要：

  Two series of cephalosporins A and B have been synthesized, bearing at C-3' catechols substituted with various electron withdrawing groups (Y) and differing links (X), and were evaluated for their in vitro antibacterial activity and their pharmacokinetics in marmosets. Compounds in series A, bearing an isobutyric oxime substituent, proved to be highly active against Gram-negative organisms and were especially noteworthy for showing long elimination phase (beta) half-lives in marmosets. It was established that introduction of electron withdrawing substituents greatly increased the beta-half-lives of compounds (5, X = NHCO, Y = H, t1/2 = 1.25 h, AUC = 27 mg/h per L; 11, X = NHCO, Y = 5-Cl, t1/2, = 4.5 h, AUC = 638 mg/h per L) and that the nature of the link also influenced t1/2, the highest values being obtained when X = NHCO and OCO. Acidities (pK(a) values) of the substituted catechols were measured, and relationships between the acidities and half-lives were evaluated. Thus it was established that the more acidic catechols gave the longest half-lives (12, X = NHCO, Y = 2,5-Cl2, t1/2 = 8.2 h, AUC = 461 mg/h per L). Further elaboration of the catechol to bicyclic systems maintained good pharmacokinetics when the pK(a) was sufficiently acidic.

  DOI：

  10.1021/jm00092a015

文献信息

• Pharmacokinetics of catechol cephalosporins. The effect of incorporating substituents into the catechol moiety on pharmacokinetics in a marmoset model
  作者：T. G. C. Bird、J. C. Arnould、A. Bertrandie、F. H. Jung

  DOI：10.1021/jm00092a015

  日期：1992.7

  Two series of cephalosporins A and B have been synthesized, bearing at C-3' catechols substituted with various electron withdrawing groups (Y) and differing links (X), and were evaluated for their in vitro antibacterial activity and their pharmacokinetics in marmosets. Compounds in series A, bearing an isobutyric oxime substituent, proved to be highly active against Gram-negative organisms and were especially noteworthy for showing long elimination phase (beta) half-lives in marmosets. It was established that introduction of electron withdrawing substituents greatly increased the beta-half-lives of compounds (5, X = NHCO, Y = H, t1/2 = 1.25 h, AUC = 27 mg/h per L; 11, X = NHCO, Y = 5-Cl, t1/2, = 4.5 h, AUC = 638 mg/h per L) and that the nature of the link also influenced t1/2, the highest values being obtained when X = NHCO and OCO. Acidities (pK(a) values) of the substituted catechols were measured, and relationships between the acidities and half-lives were evaluated. Thus it was established that the more acidic catechols gave the longest half-lives (12, X = NHCO, Y = 2,5-Cl2, t1/2 = 8.2 h, AUC = 461 mg/h per L). Further elaboration of the catechol to bicyclic systems maintained good pharmacokinetics when the pK(a) was sufficiently acidic.