The synthesis of hydrazides formed by quinazolin-4(3H)-ylidenehydrazine and dicarboxylic acids, as well as their further modification are described in the present manuscript. It was shown that above-mentioned hydrazides may be obtained via acylation of initial quinazolin-4(3H)-ylidenehydrazine by corresponding acylhalides, cyclic anhydrides and imidazolides of dicarboxylic acids monoesters. Obtained hydrazides were converted into [1,2,4]triazolo[1,5-с]quinazolines that were used as initial compounds for chemical modification aimed to the introduction of amide fragment to the molecule. The IR, 1H NMR and chromato-mass spectral data of obtained compounds were studied and discussed. Obtained substances were studied for anti-inflammatory activity using carrageenan-induced paw inflammation model. Amides of ([1,2,4]triazolo[1,5-с]quinazoline-2-yl)alkyl carboxylic acids were detected as promising class of anti-inflammatory agents for further purposeful synthesis and profound study of anti-inflammatory activity.
本文描述了由喹唑啉-4(3H)-基肼和二羧酸形成的肼类化合物的合成,以及它们的进一步改性。实验证明,上述肼类化合物可以通过对初级喹唑啉-4(3H)-基肼进行酰化反应,使用相应的酰卤、环酐和二羧酸单酯的咪唑酰化物来获得。获得的肼类化合物被转化为[1,2,4]三唑并[1,5-с]喹唑啉,这些化合物被用作化学改性的起始化合物,旨在向分子中引入酰胺基团。对获得的化合物进行了红外光谱、核磁共振和色谱-质谱数据的研究和讨论。使用海藻胶诱导的爪炎模型研究了获得的物质的抗炎活性。检测到([1,2,4]三唑并[1,5-с]喹唑啉-2-基)烷基羧酸酰胺作为有前途的抗炎药物类别,可用于进一步有目的地合成和深入研究抗炎活性。