Synthesis of pyrimidinocyclophanes having a bridging nitrogen atom
摘要:
Reactions of 1,3-bis(omega-bromoalkyl)-substituted uracils, quinazoline-2,4-dione, and 5-methyl-1,3,5-triazine-2,4,6-trione and 1,3-bis(m-bromomethylbenzyl)-5-bromouracil with amines (aliphatic amines, benzylamines, naphthylmethanamine, and anisidine) gave a series of macrocyclic compounds having one pyrimidine or triazine fragment and an azapolymethylene bridge connecting the N-1 and N-3 atoms of the heteroring. The bridging nitrogen atom in some macrocyclic compounds was subjected to quaternization with methyl p-toluenesulfonate.
Novel Uracil-Based Inhibitors of Acetylcholinesterase with Potency for Treating Memory Impairment in an Animal Model of Alzheimer’s Disease
作者:Vyacheslav E. Semenov、Irina V. Zueva、Sofya V. Lushchekina、Eduard G. Suleimanov、Liliya M. Gubaidullina、Marina M. Shulaeva、Oksana A. Lenina、Konstantin A. Petrov
DOI:10.3390/molecules27227855
日期:——
Novel derivatives based on 6-methyluracil and condensed uracil, 2,4-quinazoline-2,4-dione, were synthesized with terminal meta- and para-benzoate moieties in polymethylene chains at the N atoms of the pyrimidine ring. In the synthesized compounds, the polymethylene chains were varied from having tris- to hexamethylene chains and quaternary ammonium groups; varying substituents (ester, salt, acid) at
基于 6-甲基尿嘧啶和缩合尿嘧啶 2,4-喹唑啉-2,4-二酮的新型衍生物在嘧啶环的 N 原子处的聚亚甲基链中合成了末端间苯甲酸酯和对苯甲酸酯部分。在合成的化合物中,多亚甲基链从具有三亚甲基链到六亚甲基链和季铵基团不等;苯环上的不同取代基(酯、盐、酸)被引入链和苯甲酸酯部分。体内生物学实验证明了这些化合物在减少 β-淀粉样斑块数量方面的效力及其在阿尔茨海默病转基因模型中治疗记忆障碍的适用性。
Synthesis and structure of pyrimidinophanes with a sulfur atom in the spacer
作者:Anton E. Nikolaev、Vyacheslav E. Semenov、Olga A. Lodochnikova、Shamil K. Latypov、Vladimir S. Reznik
DOI:10.1016/j.mencom.2010.01.002
日期:2010.1
The cyclization of 1,3-bis(omega-bromoalkyl)uracils with sodium sulfide led to pyrimidinophanes, containing one uracil unit and an S atom in the spacer, macrocyclic structure was confirmed by X-ray data; the S atom in bridge can be oxidized into sulfoxide or sulfone or converted into sulfonium ion.