Sulfuric acid-modified polyethylene glycol 6000（PEG-OSO_3H） was applied as an efficient and recyclable catalyst for the synthesis ofβ-amino carbonyl compounds via the Mannich reaction between aldehydes,aromatic ket...Sulfuric acid-modified polyethylene glycol 6000（PEG-OSO_3H） was applied as an efficient and recyclable catalyst for the synthesis ofβ-amino carbonyl compounds via the Mannich reaction between aldehydes,aromatic ketones and aromatic amines at room temperature using PEG400-H_2O（1：1） as environment-friendly solvents.The reactions were completed in short times and mild reaction conditions with good to excellent yields.展开更多
Under mild conditions, conversion of a variety of ketoximes and aldoximes to their corresponding amides and nitriles proceeded in the presence of PEG-SO3H with high yields.
文摘目的:阐述印迹基因PEG3在肾细胞癌中的表达及意义。方法:利用Oncomine数据库及GEPIA分析PEG3在肾透明细胞癌组织中的表达情况;利用KM-Plotter做PEG3与肾透明细胞癌患者生存期的相关性分析,经Meth HC分析PEG3启动子区甲基化水平,String-DB数据库分析PEG3相互作用蛋白;通过The Human Protein Atlas分析PEG3蛋白在肾透明细胞癌中的蛋白表达情况。结果 :在mRNA水平上,PEG3在肾透明细胞癌中较正常肾组织显著低表达,表达水平与肾癌预后呈负相关(Log-rank P=0.001 1),PEG3蛋白在肾透明细胞癌中也较正常肾脏组织低表达,且其启动子甲基化水平则显著增高。与PEG3相关蛋白有NLRP7、MEST、SIAH1、PEG10、CDC25 B等,可能参与细胞有丝分裂周期调节及遗传印迹等细胞功能。结论 :通过肿瘤基因数据库信息挖掘发现,PEG3在肾透明细胞癌组织中呈低表达,且与患者生存期有关,将为后续的肿瘤研究提供重要的理论依据。
基金supported by grants from The National Natural Science Foundation of China(31260271)The Natural Science Foundation of Inner Mongolia,China(2012MS0513)
基金the financial support from the National Natural Science Foundation of China(Nos.20902073 and 21062017)the Natural Science Foundation of Gansu Province(No.096RJZA116)the Scientific and Technological Innovation Engineering program of Northwest Normal University(Nos.nwnu-kjcxgc-03-64,nwnulkqn -10-15)
文摘Sulfuric acid-modified polyethylene glycol 6000（PEG-OSO_3H） was applied as an efficient and recyclable catalyst for the synthesis ofβ-amino carbonyl compounds via the Mannich reaction between aldehydes,aromatic ketones and aromatic amines at room temperature using PEG400-H_2O（1：1） as environment-friendly solvents.The reactions were completed in short times and mild reaction conditions with good to excellent yields.
基金support from the Natural Science Foundation of Gansu Province(No.3ZS061-A25-019)the Scientific Research fund of Gansu Provincial Education Department(No.0601-25)
文摘Under mild conditions, conversion of a variety of ketoximes and aldoximes to their corresponding amides and nitriles proceeded in the presence of PEG-SO3H with high yields.
