合成了一系列包含3-oxo-3,4-dihydro-quinoxaline部分的新型4-苯氧基喹啉衍生物,并评估了它们对五种人类癌细胞系(A549,H460,HT-29,MKN-45和U87MG)的抗增殖活性在体外。大多数测试化合物均比阳性对照foretinib表现出更强的抑制活性。进一步检查化合物1b,1s和1t对c-Met激酶的抑制活性。最有前途的化合物1s(c-Met IC 50值为1.42 nM)对具有IC 50的A549,H460,HT-29,MKN45和U87MG细胞系表现出显着的细胞毒性分别为0.39μM,0.18μM,0.38μM,0.81μM。他们的初步结构-活性关系(SARs)研究表明,用环己烷取代芳环可提高其抗增殖活性。
Synergistic Effects of ppm Levels of Palladium on Natural Clinochlore for Reduction of Nitroarenes
作者:Mohammad Gholinejad、Erfan Oftadeh、Mohammad Shojafar、José M. Sansano、Bruce H. Lipshutz
DOI:10.1002/cssc.201901535
日期:2019.9.20
occurring clay clinochlore with ppm amounts of palladium leads to a new and very effective reagent for the reduction of numerous aromatic nitro species. When palladium nanoparticles are supported on pyridyltriazole-modified clinochlore, iron within clinochlore acts synergistically with palladium to catalyze the reduction of a wide variety of nitroarenes at room temperature in aqueousmedia. Based on
Carbonyl Iron Powder: A Reagent for Nitro Group Reductions under Aqueous Micellar Catalysis Conditions
作者:Nicholas R. Lee、Agata A. Bikovtseva、Margery Cortes-Clerget、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1021/acs.orglett.7b03216
日期:2017.12.15
An especially mild, safe, efficient, and environmentally responsible reduction of aromatic and heteroaromatic nitro-group-containing educts is reported that utilizes very inexpensive carbonyl iron powder (CIP), a highly active commercial grade of iron powder. These reductions are conducted in the presence of nanomicelles composed of TPGS-750-M in water, a recyclable aqueous micellar reaction medium
Es werden in 1-Stellung benzylierte und phenyläthylierte 3-Benzyl-1,2-dihydrochinoxalin-2-one, 1,6,7-trisubstituierte 1,2-Dihydrochinoxalin-2-one und -3-Methyldihydrochinoxalin-2-one, verätherte 2-Hydroxy-chinoxaline, sowie 1,2,3,4-Tetrahydrochinoxaline und deren Quartärisate beschrieben, die zwecks pharmakologischer Prüfung synthetisiert wurden.
Es werden在1-Stellung苄基和苯基thyyrlierte 3-Benzyl-1,2-dihydrochinoxalin-2-one,1,6,7-trisubituierte 1,2-Dihydrochinoxalin-2-one和-3-Methyldihydrochinoxalin-2-one,verätherte 2-羟基-喹喔啉,1,2,3,4-四氢喹喔啉和苯并四氢呋喃衍生物,药代动力学合成法。
Starch functionalized creatine for stabilization of gold nanoparticles: Efficient heterogeneous catalyst for the reduction of nitroarenes
作者:Mohammad Gholinejad、Neda Dasvarz、Mohammad Shojafar、José M. Sansano
DOI:10.1016/j.ica.2019.118965
日期:2019.9
Selective reduction of nitroaromatic pollutants into amines with recoverable and reusable heterogeneous catalysts is highly desirable. Herein, we prepared and characterized an efficient novel catalyst comprising 4 nm size Au nanoparticles supported on creatine modified starch. Using this catalyst, efficient reduction of nitroarenes into amines at room temperature in aqueous media was achieved. The presence of creatine in the structure of the catalyst plays important role in amount of Au loading, efficiency of the catalyst, recycling times, and leaching of Au compared to starch supported Au without creatine.