Synthesis of novel 2-phenyl-3-[2-(substituted amino) ethylamino] quinazolin-4(3H)-ones as a new class of H1-antihistaminic agents
作者:V. Alagarsamy、P. Shyam Sundar、M. Gobinath、S. Nivedhitha、P. Parthiban、D. Shankar、M. T. Sulthana、V. Raja Solomon
DOI:10.1007/s00044-012-0243-3
日期:2013.5
A series of novel 2-phenyl-3-[2-(substituted amino) ethylamino] quinazolin-4(3H)-ones was synthesized by the nucleophilic substitution of 3-(2-bromo ethylamino)-2-phenyl quinazolin-4(3H)-one with various amines. The starting material, 3-(2-bromo ethylamino)-2-phenyl quinazolin-4(3H)-one, was synthesized from anthranilic acid by a multistep synthesis. All the title compounds were tested for their in
通过3-(2-溴乙基氨基)-2-苯基喹唑啉-4的亲核取代合成了一系列新型的2-苯基-3- [2-(取代氨基)乙基氨基]喹唑啉-4(3 H)-ones。 (3 H)-与各种胺合一。通过多步合成由邻氨基苯甲酸合成原料3-(2-溴乙基氨基)-2-苯基喹唑啉-4(3 H)-one。测试所有标题化合物的体内H 1以扑尔敏为标准药物,对剂量为10 mg / kg的清醒豚鼠的抗组胺活性。生物学活性的结果表明,所有测试化合物均能明显保护动物免受组胺诱导的支气管痉挛的侵害。与标准扑尔敏(70.09%)相比,化合物2-苯基-3- [2-(哌嗪基)乙基氨基]喹唑啉-4(3 H)-1 (S3)成为该系列中活性最高的化合物(保护度为73.67%)。保护)。有趣的是,与马来酸氯苯那敏(29.58%)相比,化合物S3的镇静作用(8.21%)可忽略不计。因此,化合物S3可以作为先导分子进一步发展成为新的H 1类-抗组胺药。