The first nickel-catalysed dehydrogenative coupling of primary alcohols and ethylene glycol with aromaticdiamines for selective synthesis of mono- and di-substituted benzimidazoles and quinoxalines is reported. The earth-abundant, non-precious and simple NiCl2/L1 system enables the synthesis of N-heterocycles releasing water and hydrogen gas as byproducts. Mechanistic studies involving deuterium labeling
申请人:Max-Planck-Gesellschaft zur Förderung der
Wissenschaften e.V.
公开号:EP2698367A1
公开(公告)日:2014-02-19
The present invention relates to novel substituted benzimidazoles and stereoisomeric forms, prodrugs, solvates, hydrates and/or pharmaceutically acceptable salts of these compounds as well as pharmaceutical compositions containing at least one of these substituted benzimidazoles together with pharmaceutically acceptable carrier, excipient and/or diluents. Said novel substituted benzimidazoles binding to the prenyl binding pocket of PDEδ have been identified as useful for the prophylaxis and treatment of cancer by the inhibition of the binding of PDEδ to K-Ras and of oncogenic Ras signalling in cells by altering its localization leading to cell death or inhibition of proliferation.
[EN] BENZIMIDAZOLES FOR THE TREATMENT OF CANCER<br/>[FR] BENZIMIDAZOLES POUR LE TRAITEMENT D'UN CANCER
申请人:MAX PLANCK GESELLSCHAFT
公开号:WO2014027053A1
公开(公告)日:2014-02-20
The present invention relates to novel substituted benzimidazoles and stereoisomeric forms, prodrugs, solvates, hydrates and/or pharmaceutically acceptable salts of these compounds as well as pharmaceutical compositions containing at least one of these substituted benzimidazoles together with pharmaceutically acceptable carrier, excipient and/or diluents. Said novel substituted benzimidazoles binding to the prenyl binding pocket of PDEδ have been identified as useful for the prophylaxis and treatment of cancer by the inhibition of the binding of PDEδ to K-Ras and of oncogenic Ras signalling in cells by altering its localization leading to cell death or inhibition of proliferation.
VOSO 4 catalyzed highly efficient synthesis of benzimidazoles, benzothiazoles, and quinoxalines
作者:Chander Singh Digwal、Upasana Yadav、Akash P. Sakla、P.V. Sri Ramya、Shams Aaghaz、Ahmed Kamal
DOI:10.1016/j.tetlet.2016.06.074
日期:2016.9
Herein, we describe a highly efficient and eco-friendly protocol for the synthesis of benzimidazoles, benzothiazoles, and quinoxalines using VOSO4 as a catalyst in ethanol. Use of nontoxic and recyclable catalyst, clean reaction profile, high yields, scalability, and broad substrate scope are the important practical features of the present protocol.
The invention provides coated metal oxide particles, wherein metal oxide particles are coated with at least one type of crosslinkable chromophore with UV-A and/or UV-B and/or UV-C filter and/or broadband activity and optionally at least one type of crosslinkable monomer which does not have UV-A and/or UV-B and/or UV-C and/or broadband filter activity and process to obtain coated metal oxide particles and their use especially in cosmetic or dermatological formulations for the protection against harmful effects of sunlight.