2-(2-dimethylamino-4-pyrazinio)ethylidene-1,1-biphosphonic acid betaine | 203264-12-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机膦酸及其衍生物
• 英文名称: 2-(2-dimethylamino-4-pyrazinio)ethylidene-1,1-biphosphonic acid betaine
• 英文别名: 3-(Dimethylamino)-1-(2,2-diphosphonoethyl)pyrazinium inner salt；[2-[3-(dimethylamino)pyrazin-1-ium-1-yl]-1-phosphonoethyl]-hydroxyphosphinate
• CAS: 203264-12-4
• 化学式: C₈H₁₅N₃O₆P₂
• 分子量: 311.171
• InChiKey: GQLKKEUNWLRAQM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.3
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  138
• 氢给体数：
  3
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  vinylidene-1,1-diphosphonic acid 、 二甲胺嗪 以 水 为溶剂， 反应 0.5h， 以86%的产率得到2-(2-dimethylamino-4-pyrazinio)ethylidene-1,1-biphosphonic acid betaine
  参考文献：
  名称：

  摘要：

  Purpose. This work was aimed at synthesizing novel bisphosphonates (BPs) and examining them in comparison to clinically used BPs such as pamidronate and alendronate, and to tetracycline, in order to evaluate their potential as anticalcification and antiresorption agents. The correlation between the various models was examined in order to establish facile experimental models for pre-screening of potential compounds.Methods. Nitrogen-containing heterocyclic, novel BPs such as 2-(3-methylimidazolio) ethylidene-1,1-bisphosphonic acid betaine (VS-5b), 2-(2-dimethylamino-4-pyrazinio)ethylidene-1,1-bisphosphonic acid betaine (VS-6b), and 2-(2-alpha-pyridylethylthio) ethylidene-1,1-bisphosphonic acid (ISA-225), were synthesized and evaluated in comparison to clinically used BPs, in various experimental models of resorption and calcification.Results. The physicochemical properties of the novel compounds are slightly different than the BPs in clinical use: the pKa values are lower, the affinity for hydroxyapatite is lower and the solubilities of the calcium salts are higher. The anticalcification potencies of the novel compounds were high and ranked as follows: alendronate = pamidronate > VS-6b = VS-5b = ISA-225 > tetracycline. The in vivo antiresorption activity of VS-5b and VS-6b in comparison to that of the clinically employed, pamidronate, was shown to be similar and higher, respectively.Conclusions. The anticalcification activity of the novel compounds as well as that of tetracycline was lower than that of alendronate. The antiresorption activity of VS-6b was similar to that of pamidronate. A good correlation between the different models was found, enabling the facile screening of novel compounds. The activities of tetracycline and EDTA highlight the distinct behavior of BPs as "crystal poison." In addition, tetracycline was found to be a potent anticalcification agent in the ectopic calcification model.

  DOI：

  10.1023/a:1011990129437

文献信息

• ——
  作者：Hagit Cohen、Vered Solomon、Ivan S. Alferiev、Eli Breuer、Asher Ornoy、Natan Patlas、Naomi Eidelman、Gerhard Hägele、Gershon Golomb

  DOI：10.1023/a:1011990129437

  日期：——

  Purpose. This work was aimed at synthesizing novel bisphosphonates (BPs) and examining them in comparison to clinically used BPs such as pamidronate and alendronate, and to tetracycline, in order to evaluate their potential as anticalcification and antiresorption agents. The correlation between the various models was examined in order to establish facile experimental models for pre-screening of potential compounds.Methods. Nitrogen-containing heterocyclic, novel BPs such as 2-(3-methylimidazolio) ethylidene-1,1-bisphosphonic acid betaine (VS-5b), 2-(2-dimethylamino-4-pyrazinio)ethylidene-1,1-bisphosphonic acid betaine (VS-6b), and 2-(2-alpha-pyridylethylthio) ethylidene-1,1-bisphosphonic acid (ISA-225), were synthesized and evaluated in comparison to clinically used BPs, in various experimental models of resorption and calcification.Results. The physicochemical properties of the novel compounds are slightly different than the BPs in clinical use: the pKa values are lower, the affinity for hydroxyapatite is lower and the solubilities of the calcium salts are higher. The anticalcification potencies of the novel compounds were high and ranked as follows: alendronate = pamidronate > VS-6b = VS-5b = ISA-225 > tetracycline. The in vivo antiresorption activity of VS-5b and VS-6b in comparison to that of the clinically employed, pamidronate, was shown to be similar and higher, respectively.Conclusions. The anticalcification activity of the novel compounds as well as that of tetracycline was lower than that of alendronate. The antiresorption activity of VS-6b was similar to that of pamidronate. A good correlation between the different models was found, enabling the facile screening of novel compounds. The activities of tetracycline and EDTA highlight the distinct behavior of BPs as "crystal poison." In addition, tetracycline was found to be a potent anticalcification agent in the ectopic calcification model.