(R,S) 4-amino-5-chloro-N-<3-dimethylamino-3-tetrahydrofuranyl>methyl-2-methoxybenzamide

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (R,S) 4-amino-5-chloro-N-<3-dimethylamino-3-tetrahydrofuranyl>methyl-2-methoxybenzamide
• 英文别名: 4-amino-5-chloro-N-[[3-(dimethylamino)oxolan-3-yl]methyl]-2-methoxybenzamide
• 化学式: C₁₅H₂₂ClN₃O₃
• 分子量: 327.811
• InChiKey: JZAFFASPOHTPQB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  76.8
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  3-cyano-3-dimethylamino-tetrahydrofurane 在 lithium aluminium tetrahydride 、 硫酸 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 (R,S) 4-amino-5-chloro-N-<3-dimethylamino-3-tetrahydrofuranyl>methyl-2-methoxybenzamide
  参考文献：
  名称：

  Serotoninergic properties of new conformationally restricted benzamides

  摘要：

  A new series of benzamides derived from metoclopramide have been synthesized, in which the vicinal carbon of the basic nitrogen atom of the ethyl chain is situated on the C-3, C-4, C-5 and C-6 rings. The diamino derivatives were prepared through Strecker's reaction from the corresponding ketones except for the cyclopropyl derivatives where 1-ethoxy-1-trimethylsiloxy cyclopropane was used as the starting material. The benzamides were prepared using the mixed anhydride method. They were tested in binding assays for D-2, 5-HT3 and 5-HT4 receptors. The results show a marked increase in the selectivity and potency of these derivatives for 5-HT3 receptors with regard to metoclopramide (compound 1d: 5-HT3 K-i = 9.03 nM; 5-HT4 K-i > 5000; D-2 K-i > 5000). The influences of steric hindrance and hydrophobic properties on the affinity of benzamide derivatives for 5-HT3 receptors were also emphasized by these data. The X-ray crystal structure of compound 1d was compared with that of the minimal energy conformer of BRL 24682, a reference 5-HT3 receptor antagonist benzamide, determined using the Random Search program. Superimposition of the two structures showed a suitable fit between the pharmacophore groups previously determined to be important for 5-HT3 receptor antagonists. On the other hand, the hydrophobic parts of the basic moieties had different spatial occupancies.

  DOI：

  10.1016/0223-5234(96)89139-2

文献信息

• Serotoninergic properties of new conformationally restricted benzamides
  作者：D Yang、B Brémont、S Shen、S Kefi、M Langlois

  DOI：10.1016/0223-5234(96)89139-2

  日期：1996.1

  A new series of benzamides derived from metoclopramide have been synthesized, in which the vicinal carbon of the basic nitrogen atom of the ethyl chain is situated on the C-3, C-4, C-5 and C-6 rings. The diamino derivatives were prepared through Strecker's reaction from the corresponding ketones except for the cyclopropyl derivatives where 1-ethoxy-1-trimethylsiloxy cyclopropane was used as the starting material. The benzamides were prepared using the mixed anhydride method. They were tested in binding assays for D-2, 5-HT3 and 5-HT4 receptors. The results show a marked increase in the selectivity and potency of these derivatives for 5-HT3 receptors with regard to metoclopramide (compound 1d: 5-HT3 K-i = 9.03 nM; 5-HT4 K-i > 5000; D-2 K-i > 5000). The influences of steric hindrance and hydrophobic properties on the affinity of benzamide derivatives for 5-HT3 receptors were also emphasized by these data. The X-ray crystal structure of compound 1d was compared with that of the minimal energy conformer of BRL 24682, a reference 5-HT3 receptor antagonist benzamide, determined using the Random Search program. Superimposition of the two structures showed a suitable fit between the pharmacophore groups previously determined to be important for 5-HT3 receptor antagonists. On the other hand, the hydrophobic parts of the basic moieties had different spatial occupancies.