Different barbiturate derivatives linked to aryl hydrazone moieties as urease inhibitors; design, synthesis, urease inhibitory evaluations, and molecular dynamic simulations
thiourea (IC50 = 23 ± 1.7 μM) against urease. It was shown that 4-bromo substitution on the phenyl ring of barbiturate improved the inhibitory potency. Furthermore, based on the molecular dynamic studies, compound 4g depicted noticeable interaction with the urease active site and mobile flap residues through the barbituricacid moiety by coordinating toward the metal bi-nickel center and the essential
Conversion of 1,3-Dimethyl-5-(Arylazo)-6-Amino-Uracils to 1,3-Dimethyl-5-(Arylazo)-Barbituric Acids: Spectroscopic Characterization, Photophysical Property and Determination of pK<sub>a</sub>of the Products
The study of inter‐conversion between molecules, especially biologically and pharmaceutically important molecules, is extremely important. This study reports the inter‐conversion between two azo‐derivtives: azo‐6‐aminouracils to azo‐barbituric acids. We successfully converted the 1,3‐dimethyl‐5‐(arylazo)‐6‐aminouracils (Uazo‐1 to Uazo‐4) to 1,3‐dimethyl‐5‐(arylazo)‐barbituric acids (BAazo‐1 to BAazo‐4)
分子之间,尤其是生物学上和药学上重要的分子之间的相互转化研究非常重要。这项研究报告了两种偶氮衍生物之间的相互转化:偶氮6-氨基尿嘧啶向偶氮巴比妥酸。我们成功地将1,3-二甲基-5-(芳基偶氮)-6-氨基尿嘧啶(Uazo-1转化为Uazo-4)转化为1,3-二甲基-5(芳基偶氮)-巴比妥酸(BAazo-1转化为BAazo- 4)(其中,aryl⇒C 6 ħ 5 - (1); p -MeC 6 ħ 4 - (2),p -ClC 6 ħ 4 - (3)和p‐ NO 2 C 6 H 4‐(4))遵循酸水解路径。使用紫外可见光谱,红外光谱和核磁共振光谱仪等光谱仪对产品进行表征。所制备染料的紫外可见光谱表明,与偶氮-6-氨基尿嘧啶相比,它们几乎对溶剂合变色反应不灵敏。制备的偶氮巴比妥酸的红外光谱表现出三个>CO的特征频率,而不是偶氮6-6氨基尿嘧啶的两个特征频率。1个反映溶液种类存在的1 H NMR