Azopyrazolobenzylidene derivatives of 4-amino-1,2,4-triazol-3-ones. Synthesis of 4-{[4-(3,5-dimethyl-1<i>H</i>-pyrazol-4-yl)diazenyl]-benzylidene}amino-2-aryl-5-methyl-3<i>H</i>-[1,2,4]-triazol-3-ones
作者:Vinay A. Sunagar、Prashant R. Latthe、Bharati V. Badami
DOI:10.1002/jhet.5570440101
日期:2007.1
The Schiff bases 3a-h obtained from 4-amino-1,2,4-triazol-3-ones 1a-h when subjected to Japp-Klingemann reaction yielded the corresponding 3-2-[(2-aryl-5-methyl-3H-[1,2,4]-triazol-3-one-4-yl)]-iminophenyl}-pentane-2,4-diones 4a-h. These diones on cyclisation with N2H4 yielded the title compounds 5a-h. The energetics of the Keto-enol tautomers of the diones was calculated by semiemperical calculations
从4-氨基-1,2,4-三唑-3-酮1a-h进行席普-克林格曼反应获得的席夫碱3a-h得到相应的3- 2-[(2-芳基-5-甲基-3 H -[[1,2,4]-三唑-3-一-4-基)]-亚氨基苯基}-戊烷-2,4-二酮4a-h。这些二酮在用N 2 H 4环化后得到标题化合物5a-h。通过使用AM1和PM3方法的半经验计算来计算二酮的酮-烯醇互变异构体的能量。筛选了所有这些化合物对几种微生物的抗微生物活性,并且与参考药物相比,它们大多数表现出更多的真菌抑制作用。