The efficient copper-catalyzed cyanoalkylation of amines via C–Cbondcleavage has been demonstrated. Distinctive features of this procedure involves mild conditions, broad range of nitrogen nucleophiles, high selectivity, and good functional group tolerance, thus providing a useful approach for the C(sp3)–N bond formations. Most importantly, this protocol is applicable to the late-stage functionalization
Benzimidazole-based silver(I)-<i>N</i>-heterocyclic carbene complexes as anti-bacterials: synthesis, crystal structures and nucleic acids interaction studies
作者:Patrick O. Asekunowo、Rosenani A. Haque、Mohd. R. Razali、Srinivasa Budagumpi
DOI:10.1002/aoc.3256
日期:2015.3
binuclear structure for one of the complexes and a mononuclear one for two others. These complexes exist as cationic Ag(I)–NHC complexes with the chelation of carbene carbons to the silver centre in an almost linear manner. The compounds were screened for their anti‐bacterial activities against Staphylococcus aureus (ATCC 12600) as a Gram‐positive bacterium and Escherichia coli (ATCC 25922) as a Gram‐negative
Synthesis and characterization of nitrile functionalized silver(I)-N-heterocyclic carbene complexes: DNA binding, cleavage studies, antibacterial properties and mosquitocidal activity against the dengue vector, Aedes albopictus
作者:Patrick O. Asekunowo、Rosenani A. Haque、Mohd. R. Razali、Silas W. Avicor、Mustafa F.F. Wajidi
DOI:10.1016/j.ejmech.2018.03.029
日期:2018.4
compound, 8b, could effectively intercalate into DNA to form 8b–DNA complex which shows a better binding ability for DNA (Kb = 3.627 × 106) than the complexes 5b–7b (2.177 × 106, 8.672 × 105 and 6.665 × 105, respectively). Nuclease activity of the complexes on plasmid DNA and Aedes albopictus genomic DNA was time-dependent, although minimal. The complexes were larvicidal to the mosquito, with 5b, 6b and
合成了四种基于苯并咪唑的腈基官能化单核-Ag (I)-N-杂环卡宾和双核-Ag(I)-N-杂环卡宾(Ag(I)-NHC)六氟磷酸盐配合物(5b - 8b)使相应的六氟磷酸盐(1b – 4b)与Ag 2 O在乙腈中反应。这些化合物的特征在于1 H NMR,13 C NMR,IR,紫外可见光谱技术,元素分析和摩尔电导率。另外,通过单晶X射线衍射技术对8b进行结构表征。初步体外对所有化合物针对两种标准细菌进行了抗菌评估;革兰氏阳性(金黄色葡萄球菌)和革兰氏阴性(大肠杆菌)菌株。大多数Ag(I)–NHC复合物(5b – 8b)表现出中等至良好的抗菌活性,MIC值在12.5–100μg/ mL的范围内。特别是,化合物8b表现出有希望的抗金黄色葡萄球菌活性,且MIC值低(12.5μg/ mL)。但是,所有六氟磷酸盐(1b - 4b)对细菌菌株均无活性。初步的互动调查显示,活性最高的化合物8b能有效地插入DNA,以形成图8b
Treating cardiovascular diseases with
申请人:Berlex Laboratories, Inc.
公开号:US04434174A1
公开(公告)日:1984-02-28
3-Phenoxy-2-hydroxypropylamines having an N-benzimidazolyalkyl substituent and similar compounds are described herein. They are obtained by the reaction of the appropriate imidazole-1-alkanamine with an epoxide, and they are useful primarily as .beta..sub.1 -agonists/.beta.-sympathomimetic agents.
Basic compound, resist composition and patterning process
申请人:Watanabe Takeru
公开号:US20050008968A1
公开(公告)日:2005-01-13
Resist compositions comprising basic compounds having a benzimidazole skeleton and a polar functional group have an excellent resolution and an excellent focus margin and are useful in microfabrication using electron beams or deep-UV light.