Given the necessity of sacrificial reductants in various biomimetic aerobic oxygenations, alloxan-catalyzed aerobic redox system for one-pot atom-economic synthesis of sulfinyl-functionalized benzimidazoles was developed by ingeniously binding both the substrate sulfide and sacrificial reductant. This mild and transition-metal-free protocol undergoes two oxidations without additional sacrificial reagents
4-[(Bicyclic heterocyclyl)-methyl and -hetero]-piperidines
申请人:JANSSEN PHARMACEUTICA N.V.
公开号:EP0151826A1
公开(公告)日:1985-08-21
Novel 4-[(bicyclic heterocycly(ymethyl and -hetero]-piperidines of formula
wherein B is CH2, O, S, SO or SO2; the pharmaceutically acceptable acid addition salts and the possible stereochemically isomeric forms thereof, which compounds are anti-allergic agents, pharmaceutical compositions containing such compounds as an active ingredient and processes for preparing the said compounds and compositions
新型 4-[(双环杂环甲基和杂环)-哌啶类化合物,其式为
其中 B 是 CH2、O、S、SO 或 SO2;药学上可接受的酸加成盐及其可能的立体化学异构形式,这些化合物是抗过敏剂,含有这些化合物作为活性成分的药物组合物以及制备上述化合物和组合物的工艺
Discovery of isoalloxazine derivatives as a new class of potential anti-Alzheimer agents and their synthesis
作者:Ashish M. Kanhed、Anshuman Sinha、Jatin Machhi、Ashutosh Tripathi、Zalak S. Parikh、Prakash P. Pillai、Rajani Giridhar、Mange Ram Yadav
DOI:10.1016/j.bioorg.2015.05.005
日期:2015.8
This article describes discovery of a novel and new class of cholinesterase inhibitors as potential therapeutics for Alzheimer's disease. A series of novel isoalloxazine derivatives were synthesized and biologically evaluated for their potential inhibitory outcome for both acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). These compounds exhibited high activity against both the enzymes AChE as well as BuChE. Of the synthesized compounds, the most potent isoalloxazine derivatives (7m and 7q) showed IC50 values of 4.72 mu M and 5.22 mu M respectively against AChE; and, 6.98 mu M and 5.29 mu M respectively against BuChE. These two compounds were further evaluated for their anti-aggregatory activity for beta-amyloid (A beta) in presence and absence of AChE by performing Thioflavin-T (ThT) assay and Congo red (CR) binding assay. In order to evaluate cytotoxic profile of these two potential compounds, cell viability assay of SH-SY5Y human neuroblastoma cells was performed. Further, to understand the binding behavior of these two compounds with AChE and BuChE enzymes, docking studies have been reported. (C) 2015 Elsevier Inc. All rights reserved.
CuBr-Catalyzed Oxidation/Coupling: An Efficient and Applicable Strategy for the Synthesis of 2-Aryl Benzimidazoles from 1-Fluoro-2-nitrobenzene and Benzylamines
作者:Behrooz Mirza、Mohsen Zeeb
DOI:10.1080/00397911.2014.971971
日期:2015.2.16
A novel and efficient route has been developed for the synthesis of benzimidazole derivatives via ligand-free CuBr-catalyzed oxidation and cyclization of 1,2-diamines derived from 1-fluoro-2-nitrobenzene and different arylamines as starting materials.
5-Aralkylsubstituierte 2H-Benztriazole und stabilisierte Zusammensetzungen