作者:Ameur RAHMOUNI、Anis ROMDHANE、Abderrahim BEN SAID、Kaouther MAJOULI、Hichem BEN JANNET
DOI:10.3906/kim-1303-20
日期:——
3-Substituted-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-amines 2a--c were synthesized by treating 5-aminopyrazole-4-carbonitriles 1a--c with formamide. The reactivity of compounds 1a--c towards some cyclic anhydrides was studied. The condensation of 5-aminopyrazole-4-carbonitrile 1b with triethylorthoformate gives imidate 7b, which reacts with a series of primary amines and leads to pyrazolo[3,4-d]pyrimidine-4-amines 9 and 10. The reaction of imidate 7b with ammonia and hydroxylamine afforded pyrazolopyrimidine 2b and pyrazolo[3,4-d]pyrimidin-5-(4H)-ol 11, respectively. The synthesized compounds were completely characterized by ^1H NMR, ^13}C NMR, IR, and HRMS. The antibacterial activity of some new synthesized compounds was evaluated and appeared to be significant.
3-取代-1-苯基-1H-吡唑并[3,4-d]嘧啶-4-胺 2a--c 是通过将 5-氨基吡唑-4-氰基 1a--c 与甲酰胺反应合成的。研究了化合物 1a--c 对某些环状酐的反应活性。5-氨基吡唑-4-氰基 1b 与三乙氧基甲烷的缩合反应生成亚胺酯 7b,后者与一系列伯胺反应,生成吡唑并[3,4-d]嘧啶-4-胺 9 和 10。亚胺酯 7b 与氨和羟胺的反应分别得到吡唑嘧啶 2b 和吡唑并[3,4-d]嘧啶-5-(4H)-醇 11。合成的化合物通过 ^1H NMR、^13}C NMR、IR 和 HRMS 完全表征。评估了一些新合成化合物的抗菌活性,结果表明具有显著活性。