共查询到19条相似文献,搜索用时 78 毫秒
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根据鬼臼毒衍生物和5-氟尿嘧啶的抗癌机理和构效关系,合成了7个新的4β- 5-氟尿嘧啶取代-4’-去甲表鬼鬼臼毒衍生物。在抑制金属基质蛋白酶I和胶原酶I 活性测试中,化合物2.4和2.6的抑制活性比鬼臼乙叉甙(VP-16)和5-氟尿嘧啶( 5-Fu)强的3倍和5倍,在治疗癌细胞转移方面值得进一步探讨。 相似文献
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根据鬼臼毒衍生物和 5 氟尿嘧啶的抗癌机理和构效关系 ,合成了 7个新的 4β 5 氟尿嘧啶取代 4′ 去甲表鬼臼毒衍生物 .在抑制金属基质蛋白酶I和胶原酶I活性测试中 ,化合物 2 .4和 2 .6的抑制活性比鬼臼乙叉甙 (VP 16 )和5 氟尿嘧啶 (5 Fu)强 3倍和 5倍 ,在治疗癌细胞转移方面值得进一步探讨 . 相似文献
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根据鬼臼毒衍生物和5-氟尿嘧啶的抗癌机理和构效关系,合成了7个新的4β-5-氟尿嘧啶取代4'-去甲表鬼臼毒衍生物.在抑制金属基质蛋白酶I和胶原酶I活性测试中,化合物2.4和2.6的抑制活性比鬼臼乙叉甙(VP-16)和5-氟尿嘧啶(5-Fu)强3倍和5倍,在治疗癌细胞转移方面值得进一步探讨. 相似文献
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以DMSO为溶剂,5-氟脲嘧啶(5-Fu)为修饰物,对去甲斑蝥素(2)酸酐环部分进行结构修饰,合成了一个新型的去甲斑蝥素羧酸衍生物(3),其结构经1H NMR和IR表征。采用L9(34)正交试验考察了原料比,反应温度,反应时间及溶剂用量对反应的影响。结果表明,在最佳反应条件[2 0.5 mmol,n(2)∶n(5-Fu)=1.2,于140℃反应6 h,DMSO用量15 mL]下制备的3收率为78.2%。采用MTT法研究了体外3对人肝癌细胞HepG2的抑制活性。结果表明,3在用药量为250μmol·L-1时对HepG2的抑制率为89.5%,其IC50为232.4μmol·L-1。 相似文献
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NO供体型苦参碱衍生物的合成及抗肿瘤活性 总被引:1,自引:0,他引:1
以苦参碱为原料, 设计合成了13个NO供体型苦参碱衍生物, 衍生物的结构经EI-MS, 1H NMR, IR和元素分析确证. 采用 MTT法测试所合成化合物的体外抗肿瘤活性, 结果表明, 所合成的化合物均有一定的抗肿瘤作用, 其中化合物11a~11c, 11h, 11i对肝癌细胞HepG2的抑制活性优于5-氟尿嘧啶. 相似文献
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新型双氢青蒿素哌嗪-芳香酰胺类化合物的合成及其抗肿瘤活性的初步评价 总被引:1,自引:0,他引:1
以双氢青蒿素为起始原料,在草酰氯作用下无需分离,随后在"一锅煮"条件下与哌嗪作用得到胺类化合物,该类化合物与芳香酰氯作用,快速、高效地合成了6种新型芳酰胺类双氢青蒿素哌嗪衍生物。所有化合物通过IR、1H NMR、13C NMR和HR-MS得到结构确认。同时,以四甲基偶氮唑盐比色法(MTT法)研究了该类化合物对人肝癌细胞株SMMC-7721的抑制活性。初步研究结果表明,该类化合物具有明显抑制人肝癌细胞增殖、诱导其凋亡的细胞活性,给药72h,半抑制浓度IC50最优值仅为0.04μmol/L。在与青蒿素、双氢青蒿素的对比实验中发现,该类化合物的抗癌活性明显提高,表现出该类化合物具有潜在的开发和应用价值。 相似文献
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Fatima Gul Naz Paliwal Sarvesh K. Saraf Shailendra K. 《Russian Journal of General Chemistry》2021,91(2):285-293
Russian Journal of General Chemistry - A number of novel 7-chloro-4-aminoquinoline derivatives have been efficiently synthesized by nucleophilic aromatic substitution reaction of... 相似文献
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ZHANG Xin-min ZHENG Liang-yu GAO Jun-long LIU Qing-wen SUN Guo-dong QIN Lin ZHANG Suo-qin . College of Chemistry . Key Laboratory for Molecular Enzymology Engineering of Ministry of Education Jilin University Changchun P. R. China 《高等学校化学研究》2009,25(5):648-652
Thirteen novel phenoxysulfonylureas derivatives were synthesized, and their structures were confirmed by MS, NMR and element analysis. The herbicidal activity and structure-activity relationship were also investigated. The results of preliminary active tests indicate that the compounds show moderate herbicidal activity. 相似文献
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以2,4-二氯苯甲醛和丙酮为原料,经缩合,环合和取代反应,首次合成了7个未见文献报道的5-(2,4-二氯苯基)-3-甲基-4,5-二氢-N-酰基吡唑类衍生物,其结构经1H NMR,IR和元素分析表征。初步的生物活性测试结果表明,部分化合物具有一定的杀菌活性。 相似文献
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CAO Gang WANG Mei-yi? WANG Ming-zhong WANG Su-hua LI Yong-hong LI Zheng-ming . State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry Nankai University Tianjin P. R. China . College of Chemistry Chemical Engineering North University for Ethnics Yinchuan 《高等学校化学研究》2011,27(1):60-65
Sulfonylurea herbicides have been applied worldwide in agriculture. Some sulfonylurea residues might exist in soil longer than that people expected. However, flupyrsulfuron-methyl-sodium which was firstly reported as a new 5-substituted sulfonylurea herbicide has less than one month residual life. Therefore, 5-substituted benzenesulfonylureas are potential molecules to regulate its residual situation. In order to develop new sulfonylurea derivatives, the substituent on the critical 5-posotion of the benzene... 相似文献
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KOTESWARA RAO Valasani SUBBA REDDY Sanapalli DADA PEER Echchukattula JANARDHAN RAO Alahari NAGA RAJU Chamarthi 《中国化学》2009,27(12):2379-2384
Iminophosphocins 8a – 8e and 9a – 9e were synthesized in four‐step reactions via Staudinger reaction. 3‐(Bromomethyl)‐1,2,3,4,5‐pentahydro‐3λ5‐naphtho[1,8‐f,g][1,5,3]diazaphosphocin‐3‐one ( 3 ) was prepared by reacting tris(bromomethyl)phosphineoxide ( 1 ) with 1,8‐diaminonaphthalene ( 2 ) in the presence of triethylamine (TEA) in dry tetrahydrofuran (THF), and treated with L‐valine methyl ester ( 4 ) and bis(2‐chloroethyl)amine ( 5 ) in the presence of TEA in dry THF to get 3‐methyl‐2‐[(3‐oxo‐1,2,3,4,5‐pentahydro‐3λ5‐naphtho[1,8‐f,g][1,5,3]diazaphosphocin‐3‐yl)methylamino]butanoate ( 6 ) and 3‐[di(2‐chloroethyl)aminomethyl]‐1,2,3,4,5‐pentahydro‐3λ5‐ naphtho[1,8‐f,g][1,5,3]diazaphosphocin‐3‐one ( 7 ). The compounds 6 and 7 were treated with trichlorosilane (SiCl3H) in dry tetrahydrofuran (THF) to form the trivalent P(III) intermediates 8 and 9 , which were further treated with various alkyl azides in dry THF in 55–60°C to afford the title compounds 8a – 8e and 9a – 9e . Their structures were established by multi‐nuclear NMR and mass spectra. All the newly synthesized compounds were found to possess moderate anti‐microbial activity. 相似文献