Synthesis and Pharmacological Activities of Hydrazones, Schiff and Mannich Bases of Isatin Derivatives.
作者:Seshaiah Krishnan SRIDHAR、Atmakuru RAMESH
DOI:10.1248/bpb.24.1149
日期:——
Schiff bases and phenyl hydrazone of isatins were prepared by reacting isatin and the appropriate aromatic primary amine/hydrazines. A new series of the corresponding N-mannich bases were synthesized by reacting them with formaldehyde and diphenylamine. The chemical structures were confirmed by means of their 1H-NMR, IR spectral data and elemental analysis. The compounds were screened for analgesic, antiinflammatory and antipyretic activity. 1-Diphenylaminomethyl-3-(1-naphthylimino)-1,3-dihydroindol-3-one (4), 3-(1-naphthylimino)-5-bromo-1,3-dihydroindol-2-one (2) and 1-diphenylaminomethyl-3-(4-methylphenylimino)-1,3-dihydroindol-3-one (7) were found to exhibit the highest analgesic, anti-inflammatory and antipyretic activity respectively. 1-Diphenylaminomethyl-3-(4-methylphenylimino)-1,3-dihydroindol-3-one (7) was found to be the most active compound of the series.
通过异靛红与适当的芳香伯胺/肼反应,制备了异靛红的希夫碱和苯基腙。通过与甲醛和二苯胺反应,合成了一系列新的相应的 N-曼尼希碱。通过 1H-NMR、IR 光谱数据和元素分析确认了这些化合物的化学结构。对这些化合物进行了镇痛、抗炎和解热活性筛选。结果发现,1-二苯胺甲基-3-(1-萘亚氨基)-1,3-二氢吲哚-3-酮(4)、3-(1-萘亚氨基)-5-溴-1,3-二氢吲哚-2-酮(2)和 1-二苯胺甲基-3-(4-甲基苯基亚氨基)-1,3-二氢吲哚-3-酮(7)分别表现出最高的镇痛、抗炎和解热活性。研究发现,1-二苯胺甲基-3-(4-甲基苯基亚氨基)-1,3-二氢吲哚-3-酮(7)是该系列中活性最强的化合物。