Synthesis of New Indeno[1,2-<i>c</i>]pyrazole-Based Heterocycles and Evaluation of Their Protective Effect against DNA Damage Induced by Bleomycin-Iron
作者:Bahira Hegazi、Hassan Abdel-Gawad、Hanan A. Mohamed、Farid A. Badria、Ahmad M. Farag
DOI:10.1002/jhet.1566
日期:2013.3
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Reaction of potassium 2‐(1‐phenyl‐1,4‐dihydroindeno[1,2‐c]pyrazole‐3‐carbonyl)hydrazine carbodithioate (2) with hydrazine hydrate, phenacyl bromides, and hydrazonoyl chlorides afforded the corresponding 1,2,4‐triazole, 1,3‐thiazole, and 1,3,4‐thiadiazole derivatives 3, 5, and 7, respectively. Reaction of 3‐mercapto‐4‐amino‐1,2,4‐triazole 3 with phenacyl bromides 4a–c and hydrazonoyl chlorides 6a,b afforded the corresponding 1,2,4‐triazolo[3,4‐b]‐1,3,4‐thiadiazine derivatives 10a–c and 13a,b, respectively, whereas its reaction with 2‐chloro‐N‐arylacetamide derivatives 11a–d afforded the corresponding 2‐(4‐amino‐5‐(1‐phenyl‐1,4‐dihydroindeno[1,2‐c]pyrazol‐3‐yl)‐4H‐1,2,4‐triazol‐3‐ylthio)‐N‐arylacetamide derivatives 12a–d. All of the new compounds were tested for their protection activity against DNA damage induced by bleomycin–iron complex. Compounds 7a and b showed the highest protection activity through diminishing chromogen formation between the damaged DNA and thiobarbituric acid.
下述文本已经翻译成中文:
**含硫杂环化合物的合成及其对DNA损伤的防护活性研究**
研究中使用2-(1-苯基-1,4-二氢吲哚[1,2-c]吡咯酮-3-羰基)肼基碳酸二硫酯(2)分别与水合肼、苯酰溴和腙酰氯反应,生成相应的1,2,4-三唑、1,3-噻二唑和1,2,4-硫 三(唑) 啶化合物(3、5和7)。进一步地,3-巯基-4-氨基-1,2,4-三唑(3)分别与苯酰溴(4a–c)和腙酰氯(6a,b)反应,生成1,2,4-三唑[3,4-b]-1,3,4-硫二嗪衍生物(10a–c和13a,b)。而当与2-氯-N-芳基乙酰胺(11a–d)反应时,则生成2-(4-氨基-5-(1-苯基-1,4-二氢吲哚[1,2-c]吡咯酮-3-基)-4H-1,2,4-三唑-3-硫基)-N-芳基乙酰胺衍生物(12a–d)。
所有新合成的化合物均对其防护DNA损伤活性进行了测试,损伤模型采用的是链霉素-Fe(III)复合物引起的DNA损伤。其中,7a和7b显示出最高防护活性,通过减少受损DNA与硫代巴比妥酸之间色原的形成而发挥作用。
此研究为阐明含硫杂环化合物的合成及其在医学领域的潜在应用提供了科学依据。