نتایج جستجو برای: benzimidazole synthesis

تعداد نتایج: 411590  

2004
Krzysztof Bielawski Anna Bielawska

The purpose of the present study was to identify the cellular processes and targets affected by treatment with bis-benzimidazole derivatives with chloroalkyl and bromoalkyl moieties (1–4) in the estrogen receptor-negative MDA-MB-231 human breast cancer cells. Treatment of the cells revealed that these compounds inhibited DNA synthesis and irreversibly inhibited the proliferative activity of the...

Journal: :Dalton transactions 2016
Daniel A Zurita Marcos Flores-Alamo Juventino J García

The one-pot synthesis of 1,2-disubstituted benzimidazoles by the transfer hydrogenation of azobenzene, using benzylamine as a hydrogen donor, sequential rearrangement of hydrazobenzene to semidine and further condensation with N-benzylideneamine is reported, catalyzed by 2 mol% of [Ni(COD)2] : dippe. The N2 substitution on benzimidazole can be controlled by the selection of different azobenzene...

Journal: : 2023

This research includes synthesis of new derivatives benzimidazole , the compound (A1*) prepared by reaction o-phenylene diamine with carbon disulfide in alcoholic potassium hydroxide. Then was ethyl chloroacetate and hydroxide to give ester (A2*). preparation hydrazide (A3*) (A2*) hydrazine hydrate (80%). we used prepare pyrazole (A4), then mannich basses (A4) different primary aromatic amines ...

     In this study an easy, green, efficient and simple approach is reported for the synthesis of some benzothiazole-, benzimidazole- and benzoxazole-2-thiolderivatives. The proposed approach employs the reaction of corresponding aromatic amine with potassium isopropyl xanthate (Z11) in the presence of copper sulfate (CuSO4) as a catalyst under conventional heating and ultrasonic irr...

Journal: :Journal of Ultra Chemistry 2022

The aim of this review is to provide the systematic information synthetic scheme and biological activity synthesized benzimidazole derivatives. Benzimidazole widely used lead molecule for synthesis various types pharmacologically active moiety. It heterocyclic aromatic fused colorless solid having molecular mass 118.053 g/mol. basic in nature can be served as ligand coordination chemistry. bioa...

Journal: :International Journal of Chemistry 2016

The efficiency of HZSM-5 Zeolite, tungestophosphoric acid (H3PW12O40) and tungestosililic acid (H4O40SiW12) were investigated in three-component, one-pot synthesis of coumarin dyes. These green and noncorrosive acids were highly efficient in synthesis of some coumarin dyes in excellent yield during concurrent formation of coumarin and benzimidazole or benzoxazole heterocycles (e.g. C. I. disper...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1970
R M Friedman I Pastan

2-mercapto-1(beta-4-pyridethyl)benzimidazole (MPB) inhibited the development of antiviral activity induced by interferon in chick cells. The MPB effect was reversed by washing the cells. The action of MPB was on a step immediately following interferon binding but before the cellular RNA and protein synthesis that appear to be required for interferon action. The step blocked by MPB possibly invo...

2012
Namrata Singh Annamalai Pandurangan Kavita Rana Preeti Anand Arshad Ahmad Amit Kumar Tiwari

Benzimidazole is the heterocyclic compound formed from benzene and imidazole ring containing nitrogen, oxygen sulphor and its derivatives are of wide interest because of their diverse biological activity and clinical applications, they are remarkably effective compounds both with respect to their inhibitory activity and their favourable selectivity ratio. Reported nucleus is a constituent of vi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید