((R)-1-Ethoxycarbonyl-ethyl)-1,4-dihydro-2,6-dimethyl-3-(1,3,4-oxadiazol-2-yl)-4-(2,3-dichlorophenyl)-pyridine-5-carboxylate | 103946-21-0

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: ((R)-1-Ethoxycarbonyl-ethyl)-1,4-dihydro-2,6-dimethyl-3-(1,3,4-oxadiazol-2-yl)-4-(2,3-dichlorophenyl)-pyridine-5-carboxylate
• 英文别名: (S)-(1-ethoxycarbonyl-ethyl)-(R)-1,4-dihydro-2,6-dimethyl-4-(2,3-dichlorophenyl)-5-(1,3,4-oxadiazol-2-yl)-pyridine-3-carboxylate；(R)-(1-ethoxycarbonyl-ethyl)-(S)-1,4-dihydro-2,6-dimethyl-4-(2,3-dichlorophenyl)-5-(1,3,4-oxadiazol-2-yl)-pyridine-3-carboxylate；(R)-(1-ethoxycarbonyl-ethyl)-(R)-1,4-dihydro-2,6-dimethyl-4-(2,3-dichlorophenyl)-5-(1,3,4-oxadiazol-2-yl)-pyridine-3-carboxylate
• CAS: 103946-21-0；143426-85-1；143426-86-2
• 化学式: C₂₁H₂₁Cl₂N₃O₅
• 分子量: 466.321
• InChiKey: XPXDURSYBWVBHZ-SJKOYZFVSA-N

物化性质

• 沸点：
  563.8±60.0 °C(Predicted)
• 密度：
  1.332±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.26
• 重原子数：
  31.0
• 可旋转键数：
  6.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  103.55
• 氢给体数：
  1.0
• 氢受体数：
  8.0

反应信息

• 作为产物：
  描述：

  2,3-二氯苯甲醛 在 哌啶 作用下， 以 二甲基亚砜 、 甲苯 为溶剂， 反应 15.0h， 生成 ((R)-1-Ethoxycarbonyl-ethyl)-1,4-dihydro-2,6-dimethyl-3-(1,3,4-oxadiazol-2-yl)-4-(2,3-dichlorophenyl)-pyridine-5-carboxylate
  参考文献：
  名称：

  Calcium- and calmodulin-antagonism of elnadipine derivatives: comparative SAR

  摘要：

  The Ca2+-antagonistic properties of elnadipine derivatives have been quantified by means of binding experiments in bovine cerebral cortex membranes using H-3-nitrendipine. Competition experiments have shown a 308-fold concentration range of K(i)-values (2.9 x 10(-10) to 8.9 x 10(-8)) for elnadipine derivatives and a eudismic ratio for elnadipine and its (+)-enantiomer of 448. Calmodulin (CaM)-antagonistic properties have been measured in the test system of CaM-stimulated phosphodiesterase. The concentration range of IC50 values only amounts to 9 (5 x 10(-7) to 4.5 x 10(-6) M). In contrast to Ca2+-antagonism, enantioselectivity of CaM-inhibition by elnadipine is negligible. CaM-antagonistic potency of elnadipine derivatives is diminished by a factor of 10 to 5000 as compared to their Ca2+-antagonistic potency. The following conclusions regarding structural determinants of Ca2+- and CaM-antagonistic properties can be made: lipophilic substituents of the oxadiazole in 5-position of the dihydropyridine (DHP) ring increase the CaM-antagonistic and decrease the Ca2+-antagonistic potency: correspondingly the unsubstituted compound is the strongest Ca2+- and the weakest CaM-antagonist; 1,3,4-oxadiazole substitution is superior to 1,2,4-oxadiazole as regards Ca2+- and CaM-antagonistic potency.

  DOI：

  10.1016/0223-5234(92)90006-m