共查询到20条相似文献,搜索用时 125 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
《化学试剂》2021,43(11):1492-1499
设计、合成含磺酰基结构的2-苯胺基嘧啶衍生物,并评价其体外抗白血病活性。以2-甲基-5-硝基苯胺、3-乙酰基吡啶、N,N-二甲基甲酰胺二甲基缩醛为起始原料经加成、缩合、环合、还原、磺酰化等5步反应合成17个新型含磺酰基结构的2-苯胺基嘧啶衍生物。产物结构均经~1HNMR、~(13)CNMR和MS表征。以伊马替尼为阳性对照药,采用台盼蓝排染法,以慢性粒细胞白血病K562细胞为测试细胞株对目标化合物进行体外抗白血病活性评价。结果表明:单取代化合物小体积吸电子基对活性有显著影响,其中3-溴-N-(4-甲基-3-((4-(吡啶-3-基)嘧啶-2-基)胺基)苯基)苯磺酰胺(6e)具有最强的活性,GI_(50)为(9.71±0.37)μmol/L,化合物6e与伊马替尼具有相似的结合模式,伊马替尼和化合物6e均与MET318、THR315、ASP381形成氢键,可以初步推测目标化合物的作用靶点和伊马替尼相似,可以与c-Abl受体口袋区结合,但相比伊马替尼,化合物6e缺失与GLU286之间的氢键,推测这一氢键作用的缺失是导致目标化合物活性减弱的主要原因。研究同时也证明单取代化合物活性优于双取代化合物活性。研究为开发2-苯胺基嘧啶衍生物应用于人慢性粒细胞白血病提供了借鉴。 相似文献
9.
10.
11.
以无水三氯化铝为催化剂,1,2-二氯乙烷为溶剂,通过Friedel-Crafts反应直接由氯代异丙烷和苯胺合成了对异丙基苯胺;用元素分析、FT-IR和1H NMR等方法表征了产物结构,正交实验方法优化了反应条件。结果表明,在反应温度为8℃、反应时间为60 min、无水三氯化铝对苯胺的摩尔比为1.3、氯代异丙烷对苯胺的摩尔比为1.5时,对异丙基苯胺对苯胺的收率可达70.9%。 相似文献
12.
13.
A promising gram-negative bacterial strain for the biodegradation of aniline as the sole carbon, nitrogen and energy sources was successfully isolated and identified as Delftia sp. XYJ6. The optimal temperature and pH for both the growth of Delftia sp. XYJ6 and the biodegradation of aniline were 30°C and 7.0, respectively. Initial aniline of 2000 mg8226;L-1 could be completely removed by the strain at 22 h, which showed that Delftia sp. XYJ6 had a strong ability in the biodegradation of aniline. It indicated that aniline was firstly converted to catechol catalyzed by aniline dioxygenase as a first product, which was then further biodegraded to cis,cis-muconic acid catalyzed by the catechol 1,2-dioxygenase of Delftia sp. XYJ6 as a second product. Cis,cis-muconic acid could also be further biodegraded to other small compound again. The pathway for the biodegradation of aniline by Delftia sp. XYJ6 was not previously reported. 相似文献
14.
The ozonation of aniline and anilinium ion in aqueous solution is investigated by determining the product distributions at different degrees of ozonation. Results indicate that anilinium ion, although less reactive than aniline, still has a remarkable reactivity towards ozone. The high anilinium ion reactivity and the observed product distributions are explained by assuming a radical mechanism for anilinium ion ozonation, whereas the behavior of aniline appears to be regulated mainly by the electrophilic ozonolysis mechanism. 相似文献
15.
16.
纳米Ni/Fe对水中硝基苯的催化还原特性 总被引:1,自引:0,他引:1
采用自制的纳米Ni/Fe对水中硝基苯进行催化还原处理。探讨了硝基苯的还原降解途径,考察了溶液pH、纳米Ni/Fe用量和Ni含量对还原效果的影响。结果表明,纳米Ni/Fe对水中硝基苯的去除是纳米Ni/Fe的吸附作用和还原作用的协同作用的结果,两者对硝基苯去除率的贡献分别为33.7%和66.3%。纳米Ni/Fe可将硝基苯还原为苯胺和中间产物亚硝基苯,亚硝基苯进一步被还原为最终产物苯胺。还原产物苯胺的生成率随溶液pH的升高而降低;随纳米Ni/Fe用量的增加而升高;Ni含量的适当增大有利于硝基苯还原为苯胺,但Ni含量过高时会导致苯胺生成率降低,适宜的Ni含量为1.85%。纳米Ni/Fe对硝基苯的催化还原过程遵循一级反应动力学规律,反应速率常数为0.0226 min-1。 相似文献
17.
以溴丙烯和苯胺为原料合成了N-烯丙基苯胺,通过IR和~1HNMR对化合物的组成和结构进行了表征,探讨了优化反应条件,该路线具有操作简便、反应快、收率高的特点。 相似文献
18.
19.
20.
Summary The homopolymerization of N-ethylglycidyl aniline in the presence of N,Ndimethylbenzyl amine was determined by HPLC and titrimetric methods. A product spectrum of oligomer distribution was observed. It was clearly demonstrated that the formation of this oligomer distribution was only possible in the presence of moisture. Furthermore, the formation of N-ethyl-N-propane-2,3-diol aniline was identified. 相似文献