Synthesis of Mannich bases: 2-(3-Phenylaminopropionyloxy)-benzoic acid and 3-Phenylamino-1-(2,4,6-trimethoxy-phenyl)-propan-1-one, their toxicity, ionization constant, antimicrobial and antioxidant activities
作者:Ganiyat K. Oloyede、Itoro E. Willie、Oluwakemi O. Adeeko
DOI:10.1016/j.foodchem.2014.05.119
日期:2014.12
Mannich bases 2-(3-Phenylaminopropionyloxy)-benzoic acid (A) and 3-Phenylamino-1-(2,4,6-trimethoxy-phenyl)-propan-1-one (B) were synthesized. Structures were confirmed by ultraviolet/visible and infra-red spectroscopies. The ionizationconstant (pKa) values at 8.3 and 8.0 reported for compounds A and B, respectively, indicated that protonation might occur at physiological pH. The LC50 values of 145
合成了曼尼希碱2-(3-苯基氨基丙酰氧基)-苯甲酸(A)和3-苯基氨基-1-(2,4,6-三甲氧基-苯基)-丙-1-酮(B)。通过紫外/可见和红外分光光度法确认结构。分别针对化合物A和B报告的电离常数(p K a)值分别为8.3和8.0,表明质子化可能在生理pH值下发生。从盐水虾杀伤力测试获得的LC 50值为145,595μg/ ml(A)和82,526μg/ ml(B),表明这两种化合物都是无毒的。这两种化合物对细菌和真菌菌株具有显着的抗菌活性。大肠杆菌,铜绿葡萄球菌,枯草芽孢杆菌,铜绿假单胞菌,肺炎克雷伯菌,沙门氏菌伤寒杆菌,白色念珠菌,软腐病,黑曲霉和Penicill我UM喜时的标准,庆大霉素和康唑分别为细菌和真菌,相比。通过DPPH自由基清除方法的体外抗氧化剂筛选和对过氧化氢的清除作用表明,与抗氧化剂标准抗坏血酸,丁基化羟基茴香醚和α-生育酚相比,该化合物具有显着的抗氧化活性。