4-(Benzimidazol-2-yl)-1,2,5-oxadiazol-3-ylamine derivatives: Potent and selective p70S6 kinase inhibitors
摘要:
We report herein the design and synthesis of 4-(benzimidazol-2-yl)-1,2,5-oxadiazol-3-amine derivatives as inhibitors of p70S6 kinase. Screening hits containing the 4-(benzimidazol-2-yl)-1,2,5-oxadiazol-3-ylamine scaffold were optimized for p70S6K potency and selectivity against related kinases. Structure-based design employing an active site homology model derived from PKA led to the preparation of benzimidazole 5-substituted compounds 26 and 27 as highly potent inhibitors (K-i < 1 nM) of p70S6K, with > 100-fold selectivity against PKA, ROCK and GSK3. (C) 2009 Elsevier Ltd. All rights reserved.
4-(Benzimidazol-2-yl)-1,2,5-oxadiazol-3-ylamine derivatives: Potent and selective p70S6 kinase inhibitors
摘要:
We report herein the design and synthesis of 4-(benzimidazol-2-yl)-1,2,5-oxadiazol-3-amine derivatives as inhibitors of p70S6 kinase. Screening hits containing the 4-(benzimidazol-2-yl)-1,2,5-oxadiazol-3-ylamine scaffold were optimized for p70S6K potency and selectivity against related kinases. Structure-based design employing an active site homology model derived from PKA led to the preparation of benzimidazole 5-substituted compounds 26 and 27 as highly potent inhibitors (K-i < 1 nM) of p70S6K, with > 100-fold selectivity against PKA, ROCK and GSK3. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles under catalyst-free conditions
作者:Jian-Bo Feng、Xiao-Feng Wu
DOI:10.1039/c5ob01587a
日期:——
A convenient procedure for the synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles and 2-aminopyridines or amidines with KOtBu as the promotor has been developed.
[EN] 1,3,5-TRIAZINE COMPOUND AND COMPOSITION, AND APPLICATION THEREOF<br/>[FR] COMPOSÉ DE 1,3,5-TRIAZINE, COMPOSITION ET UTILISATION ASSOCIÉES<br/>[ZH] 一种1,3,5-三嗪类化合物、组合物及其应用
Bifunctional solid catalysts for chemoselective hydrogenation–cyclisation–amination cascade reactions of relevance for the synthesis of pharmaceuticals
作者:Antonio Leyva-Pérez、Jose R. Cabrero-Antonino、Avelino Corma
DOI:10.1016/j.tet.2010.08.022
日期:2010.10
The benzodiazepines olanzapine and clozapine are nowadays manufactured by a three-step process with a final yield below 50%. An approach to environmentally-friendly intensive processes consists in the development of multifunctional solid catalyst able to catalyze multistep reactions. Here, a bifunctional metal-acid solid catalyst has been prepared and is able to carry out hydrogenation-cyclisation-amination reactions in a cascade process. The catalytic system is illustrated for the synthesis of these important antipsychotics, being an alternative for the current industrial process that requires three steps batch reactions, using mineral acids and bases, and stoichiometric amounts of SnCl2. (C) 2010 Elsevier Ltd. All rights reserved.