Catalyst-free 1,3-dipolar cycloaddition of 3-nitrochromen with sodium azide: a facile method for the synthesis of 4-aryl-1,4-dihydrochromeno[4,3-d][1,2,3]triazole derivatives
摘要:
1,3-Dipolar cycloaddition of 3-nitrochromen with sodium azide under catalyst-free conditions afforded 4-aryl-1,4-dihydrochromeno[4,3-d][1,2,3]triazole derivatives at 80 degrees C in DMSO is described. The generality of this reaction was demonstrated by synthesizing an array of 4-aryl-1,4-dihydrochromeno[4,3d][1,2,3]triazole derivatives. Clean reaction conditions, easy isolation, and good yields of the triazoles are the salient features of the methodology. (C) 2009 Elsevier Ltd. All rights reserved.
Catalyst-free 1,3-dipolar cycloaddition of 3-nitrochromen with sodium azide: a facile method for the synthesis of 4-aryl-1,4-dihydrochromeno[4,3-d][1,2,3]triazole derivatives
摘要:
1,3-Dipolar cycloaddition of 3-nitrochromen with sodium azide under catalyst-free conditions afforded 4-aryl-1,4-dihydrochromeno[4,3-d][1,2,3]triazole derivatives at 80 degrees C in DMSO is described. The generality of this reaction was demonstrated by synthesizing an array of 4-aryl-1,4-dihydrochromeno[4,3d][1,2,3]triazole derivatives. Clean reaction conditions, easy isolation, and good yields of the triazoles are the salient features of the methodology. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] NEW PI3K/AKT/MTOR INHIBITORS AND PHARMACEUTICAL USES THEREOF<br/>[FR] NOUVEAUX INHIBITEURS DE PI3K/AKT/MTOR ET LEURS UTILISATIONS PHARMACEUTIQUES
申请人:UNIV RENNES
公开号:WO2015044229A1
公开(公告)日:2015-04-02
The invention relates to new PI3K/AKT/m TOR inhibitors and their use for the prevention and/or the treatment of a disease selected from the group consisting of: inflammatory diseases, autoimmune diseases, neurodegenerative diseases, cancers, transplant rejection, diseases characterized by a premature aging and tuberous sclerosis.
New PI3K/AKT/mTOR inhibitors and pharmaceutical uses thereof
申请人:Université de Rennes 1
公开号:EP2853530A1
公开(公告)日:2015-04-01
The invention relates to new PI3K/AKT/mTOR inhibitors of formula (I) and their use for the prevention and/or the treatment of a disease selected from the group consisting of: inflammatory diseases, autoimmune diseases, neurodegenerative diseases, cancers, transplant rejection, diseases characterized by a premature aging and tuberous sclerosis.
Augmentation of Enantioselectivity by Spatial Tuning of Aminocatalyst: Synthesis of 2-Alkyl/aryl-3-nitro-2<i>H</i>-chromenes by Tandem Oxa-Michael–Henry Reaction
作者:Rahul Mohanta、Ghanashyam Bez
DOI:10.1021/acs.joc.9b03366
日期:2020.4.3
The asymmetric oxa-Michael addition of salicylaldehyde to conjugatednitroalkenes often suffers from poor reactivity and selectivity and a long reaction time. Because of the formation of an iminium ion with aminocatalyst, the nucleophilicity of the phenolic hydroxy group in salicylaldehyde reduces further to make the oxa-Michael reaction reversible. Here, we report a structurally simple and easily
Synthesis of substituted chiral chromans via organocatalytic kinetic resolution of racemic 3-nitro-2-aryl-2H-chromenes with ketones catalyzed by pyrrolidinyl-camphor-derived organocatalysts
作者:Dhananjay R. Magar、Kwunmin Chen
DOI:10.1016/j.tet.2012.05.019
日期:2012.7
pyrrolidinyl-camphor derivative 2b as a bifunctionalorganocatalyst under neat conditions in the presence of AcOH at 0 °C. In general, the organocatalyticasymmetricMichaeladdition of ketones proceeded smoothly to give the functionalized Michael adducts (3a–n) with good-to-high diastereo- and enantioselectivities (up to 92:8 dr, 93% ee, and 47% yield). The less reactive chromenes (S)-1a–h, k, l and (R)-1i–j were
“On-Water”-Promoted<i>C</i>-Alkylation of Indoles with 2-Aryl-3-nitro-2<i>H</i>-chromenes under Catalyst-Free Conditions
作者:Pateliya Mujjamil Habib、Veerababurao Kavala、B. Rama Raju、Chun-Wei Kuo、Wen-Chang Huang、Ching-Fa Yao
DOI:10.1002/ejoc.200900207
日期:2009.9
An environmentally benign method for the synthesis of indolyl(nitro)chromans from indoles and 2-aryl-3-nitro-2Hchromenes undercatalyst-freeconditions by use of an “onwater” concept is described. The salient features of the methodology are its clean reaction conditions, the eco-friendly