A chiral pyrrolidine-pyrazole catalyst for the enantioselective Michael addition of carbonyls to nitroolefins
摘要:
An enantioselective Michael reaction of carbonyl compounds to nitroolefins has been accomplished using a novel chiral pyrrolidine-pyrazole catalyst. This newly prepared catalyst was found to be very effective in providing good yields as well as good diastereo- and enantio-selectivities. The mechanism of the reaction has also been substantiated by mass spectral studies. (C) 2011 Elsevier Ltd. All rights reserved.
Design, Synthesis, and Biological Evaluation of New Inhibitors of the Endocannabinoid Uptake: Comparison with Effects on Fatty Acid Amidohydrolase
作者:María L. López-Rodríguez、Alma Viso、Silvia Ortega-Gutiérrez、Christopher J. Fowler、Gunnar Tiger、Eva de Lago、Javier Fernández-Ruiz、José A. Ramos
DOI:10.1021/jm0210818
日期:2003.4.1
A new series of arachidonic acid derivatives were synthesized and evaluated as inhibitors of the endocannabinoiduptake. Most of them are able to inhibit anandamide uptake with IC(50) values in the low micromolar range (IC(50) = 0.8-24 microM). In general, the compounds had only weak effects upon CB(1), CB(2), and VR(1) receptors (K(i) > 1000-10000 nM). In addition, there was no obvious relationship
community. Here, we document the first asymmetric catalytic Diels-Alderreaction of in situgenerated heterocyclic ortho-quinodimethanes (oQDMs), reactive diene species that have never before succumbed to a catalytic approach. Asymmetric aminocatalysis, that uses chiral amines as catalysts, is the enabling strategy to induce the transient generation of indole-, pyrrole- or furan-based oQDMs from simple
Copper-catalyzed Tandem Cyclization to Access 4-Aminoquinoline Derivatives
作者:Hui-Yang Sheng、Hui Chen、Meng Liao、Na Peng、Mian Yang、Qun Cai、Yi Liu
DOI:10.1246/cl.200053
日期:2020.5.5
An efficient and practical method for the synthesis of 4-aminoquinoline derivatives has been developed via copper-catalyzedcascade cyclization of 2-aminobenzonitrile and nitroolefins. This reactio...
[EN] 17a-HYDROXYLASE/C17,20-LYASE INHIBITORS<br/>[FR] INHIBITEURS DE LA 17?-HYDROXYLASE/C17,20-LYASE
申请人:NOVARTIS AG
公开号:WO2012035078A1
公开(公告)日:2012-03-22
The present invention provides compounds of Formula (I), or a pharmaceutically acceptable salt thereof, where R1, R2, R3, R4, R5, R6, A and n are as defined herein. A deuteriated derivative of the compound of Formula (I) is also provided.
The present invention provides compounds of Formula (I), or a pharmaceutically acceptable salt thereof, where R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, A and n are as defined herein. A deuteriated derivative of the compound of Formula (I) is also provided.