α-(4-isopropylbenzyl)-β-anilinoacrylonitrile | 110224-67-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: α-(4-isopropylbenzyl)-β-anilinoacrylonitrile
• CAS: 110224-67-4
• 化学式: C₁₉H₂₀N₂
• 分子量: 276.381
• InChiKey: MAGUQIXSSFBWBC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.87
• 重原子数：
  21.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  35.82
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  盐酸胍 、 α-(4-isopropylbenzyl)-β-anilinoacrylonitrile 在 sodium methylate 作用下， 生成 2,4-diamino-5-(4-isopropylbenzyl)pyrimidine
  参考文献：
  名称：

  2,4-Diamino-5-benzylpyrimidines as antibacterial agents. 8. The 3,4,5-triethyl isostere of trimethoprim. A study of specificity

  摘要：

  3,4,5-Triethylacetophenone was synthesized in 60% yield by a Friedel-Crafts reaction from 4-ethylacetophenone and converted to 2,4-diamino-5-(3,4,5-triethylbenzyl)pyrimidine (2), a trimethoprim (1) isostere, by standard techniques. This compound is more lipophilic than 1 by three log units (log P, octanol/water). Compound 2 was approximately equipotent with 1 in inhibiting Escherichia coli dihydrofolate reductase (DHFR), 2-fold more potent against P. berghei and N. gonorrhoeae DHFR, and 10 and 25 times better an inhibitor of rat and chicken liver DHFR, respectively. Although the 3,4-dimethoxy analogue 19 was 10-fold less inhibitory to E. coli DHFR than 1, it was 3-4 times more potent on the vertebrate isozymes, whereas the diethyl congener 10 followed 19 in its E. coli DHFR binding but was less active on rat and chicken DHFR. Therefore, a significant portion of the selectivity of 1 for bacterial, as opposed to vertebrate, DHFR, involves the methoxy functions. An analysis of the X-ray data on 1 and 2 complexed with chicken DHFR, coupled with kinetic data, led to the conclusion that the difference in binding energies of the methoxy and ethyl compounds probably involve desolvation factors, as well as direct energies of interaction with protein atoms. Thus, one cannot invoke lipophilicity or shape alone in explaining the relationship in properties of 1 and 2.

  DOI：

  10.1021/jm00394a012
• 作为产物：
  描述：

  3-(苯氨基)丙腈 、 4-异丙基苯甲醛 在 potassium tert-butylate 作用下， 以 二甲基亚砜 、 叔丁醇 为溶剂， 反应 3.5h， 以50%的产率得到α-(4-isopropylbenzyl)-β-anilinoacrylonitrile
  参考文献：
  名称：

  2,4-Diamino-5-benzylpyrimidines as antibacterial agents. 8. The 3,4,5-triethyl isostere of trimethoprim. A study of specificity

  摘要：

  3,4,5-Triethylacetophenone was synthesized in 60% yield by a Friedel-Crafts reaction from 4-ethylacetophenone and converted to 2,4-diamino-5-(3,4,5-triethylbenzyl)pyrimidine (2), a trimethoprim (1) isostere, by standard techniques. This compound is more lipophilic than 1 by three log units (log P, octanol/water). Compound 2 was approximately equipotent with 1 in inhibiting Escherichia coli dihydrofolate reductase (DHFR), 2-fold more potent against P. berghei and N. gonorrhoeae DHFR, and 10 and 25 times better an inhibitor of rat and chicken liver DHFR, respectively. Although the 3,4-dimethoxy analogue 19 was 10-fold less inhibitory to E. coli DHFR than 1, it was 3-4 times more potent on the vertebrate isozymes, whereas the diethyl congener 10 followed 19 in its E. coli DHFR binding but was less active on rat and chicken DHFR. Therefore, a significant portion of the selectivity of 1 for bacterial, as opposed to vertebrate, DHFR, involves the methoxy functions. An analysis of the X-ray data on 1 and 2 complexed with chicken DHFR, coupled with kinetic data, led to the conclusion that the difference in binding energies of the methoxy and ethyl compounds probably involve desolvation factors, as well as direct energies of interaction with protein atoms. Thus, one cannot invoke lipophilicity or shape alone in explaining the relationship in properties of 1 and 2.

  DOI：

  10.1021/jm00394a012