Intermolecular SNAr of the heterocycle-activated nitro and fluoro groups-application in the synthesis of polyazamacrocyclic ligands
申请人:Chan K. Michael
公开号:US20050239767A1
公开(公告)日:2005-10-27
A new class of tetracylic benzimidazole compounds and derivatives thereof. Additionally provided is a synthetic route for the generation of these and related compounds via Intramolecular Aromatic Nucleophilic Substitution (S
N
Ar) of the Benzimidazole-Activated Nitro Groups. Additionally, a facile route for the generation of novel phenol species as thermal decomposition of compounds the S
N
Ar product, which occurs at high temperature resulting in cleavage of the ether linkage and formation of a vinyl group and phenol is provided. Also provided are methods of using the compounds described herein in the treatment HIV.
Synthesis, α-glucosidase inhibitory, cytotoxicity and docking studies of 2-aryl-7-methylbenzimidazoles
作者:Muhammad Taha、Nor Hadiani Ismail、Syahrul Imran、Muhammad Helmi Mohamad、Abdul Wadood、Fazal Rahim、Syed Muhammad Saad、Ashfaq ur Rehman、Khalid Mohammed Khan
DOI:10.1016/j.bioorg.2016.02.004
日期:2016.4
Benzimidazole analogs 1-27 were synthesized, characterized by EI-MS and H-1 NMR and their alpha-glucosidase inhibitory activities were found out experimentally. Compound 25, 19, 10 and 20 have best inhibitory activities with IC50 values 5.30 +/- 0.10, 16.10 +/- 0.10, 25.36 +/- 0.14 and 29.75 +/- 0.19 respectively against alpha-glucosidase. Compound 6 and 12 has no inhibitory activity against alpha-glucosidase enzyme among the series. Further studies showed that the compounds are not showing any cytotoxicity effect. The docking studies of the compounds as well as the experimental activities of the compounds correlated well. From the molecular docking studies, it was observed that the top ranked conformation of all the compounds fit well in the active site of the homology model of alpha-glucosidase. (C) 2016 Elsevier Inc. All rights reserved.
γ-Maghemite-silica nanocomposite: A green catalyst for diverse aromatic N-heterocycles
作者:Pranab Ghosh、Amitava Mandal、Raju Subba
DOI:10.1016/j.catcom.2013.06.026
日期:2013.11
gamma-Maghemite-silica nanocomposite has been applied as a green catalyst to synthesize variety of aromatic N-heterocycles under solvent free conditions. Characterization was done by modern analytical tools (UV, IR, AAS, DSC, EDXRF, powdered XRD, EPR, Mossbauer and TEM). Mild reaction conditions and recyclability have made the present protocol both environmentally and economically viable. (c) 2013 Elsevier B.V. All rights reserved.
BENZIMIDAZOLES USEFUL AS MODULATORS OF ION CHANNELS
申请人:Wilson Dean M.
公开号:US20080306129A1
公开(公告)日:2008-12-11
The present invention relates to compounds of Formula I:
or a pharmaceutically acceptable salt thereof, wherein the R
1
, Z, Y, R
A
, and W groups of formula I are as defined herein. The invention also provides pharmaceutically acceptable compositions and methods of using the compositions in the treatment of various disorders.