Evaluation of 2-methyl-3-hydroxy-4-pyridinecarboxylic acid as a possible chelating agent for iron and aluminium
作者:Annalisa Dean、Maria Grazia Ferlin、Paola Brun、Ignazio Castagliuolo、Denis Badocco、Paolo Pastore、Alfonso Venzo、G. Giorgio Bombi、Valerio B. Di Marco
DOI:10.1039/b717269a
日期:——
corresponding stability constants (log beta values) are the following: FeLH (19.38), FeL (16.01), FeLH(-1) (12.28), FeL2H2 (37.29), FeL3H3 (53.41), FeL3H2 (47.99), FeL3H (41.21) and FeL3 (34.1); AlLH (17.43), AlL2H2 (33.74), AlL2H (27.6), AlL3H3 (48.72), AlL3H2 (42.67), AlL3H (35.8) and AlL3 (27.92). The complex formation between DT2 and Fe(II) was studied by UV-vis: the weak complex FeLH (log beta
鉴于可能在铁和铝的螯合疗法中的应用,合成了2-甲基-3-羟基-4-吡啶甲酸(DT2),并研究了其络合物的形成,电化学和细胞毒性。通过电位滴定,紫外可见分光光度法和1H NMR光谱研究了在25 m的0.6 m(Na)Cl水溶液中DT2对Fe(III)和Al(III)的络合特性。DT2是pKa1 = 0.47,pKa2 = 5.64和pKa3 = 11.18的三酸(H3L +)。在溶液中观察到的金属-配体配合物及其相应的稳定性常数(log beta值)如下:FeLH(19.38),FeL(16.01),FeLH(-1)(12.28),FeL2H2(37.29),FeL3H3(53.41) ,FeL3H2(47.99),FeL3H(41.21)和FeL3(34.1);AlLH(17.43),AlL2H2(33.74),AlL2H(27.6),AlL3H3(48.72),AlL3H2(42.67)