3-Hydroxy-quinolin-2-ones: Inhibitors of [3H]-glycine binding to the site associated with the NMDA receptor
摘要:
A series of substituted 3-hydroxy-quinolin-2-one derivatives 6 was synthesized and evaluated as inhibitors of [H-3]-glycine and [H-3]-AMPA binding to rat cortical membranes. These compounds were generally found to be more potent ligands for the NMDA-associated glycine binding site than the AMPA receptor. Affinity for the glycine site was found to be influenced by both the electronic and steric properties associated with the C-4 substituent and the nature and pattern of substitution of the aromatic ring. The most active compound in this series, 6y, displaces [H-3]-glycine with an IC50 of 29 nM.
Ring-Expansion Reaction of Isatins with Ethyl Diazoacetate Catalyzed by Dirhodium(II)/DBU Metal-Organic System: En Route to Viridicatin Alkaloids
作者:Roberta Paterna、Vânia André、M. Teresa Duarte、Luis F. Veiros、Nuno R. Candeias、Pedro M. P. Gois
DOI:10.1002/ejoc.201300796
日期:2013.10
present here the NHC-dirhodium(II)/DBU-catalyzed ring expansion reaction of isatins with ethyldiazoacetate. This new one-pot protocol yields the ethyl 3-hydroxy-2(1H)-oxoquinoline-4-carboxylate core, regioselectively and in good to excellent yields. A DFT mechanistic study indicates metallocarbene formation between the 3-hydroxyindole-diazo intermediate and the dirhodium(II) complex to be the rate-limiting
The invention provides compounds of formula (I) and salts thereof wherein R4-R8 have any of the meanings defined in the specification, as well as pharmaceutical compositions comprising the compounds or salts and methods for their use in therapy. The compounds have useful antiviral properties.
The invention provides compounds of formula (I) and salts thereof wherein R
4
-R
8
have any of the meanings defined in the specification, as well as pharmaceutical compositions comprising the compounds or salts and methods for their use in therapy. The compounds have useful antiviral properties.
3-Hydroxy-quinolin-2-ones: Inhibitors of [3H]-glycine binding to the site associated with the NMDA receptor
作者:Sing-Yuen Sit、Frederick J. Ehrgott、Jinnian Gao、Nicholas A. Meanwell
DOI:10.1016/0960-894x(96)00031-5
日期:1996.3
A series of substituted 3-hydroxy-quinolin-2-one derivatives 6 was synthesized and evaluated as inhibitors of [H-3]-glycine and [H-3]-AMPA binding to rat cortical membranes. These compounds were generally found to be more potent ligands for the NMDA-associated glycine binding site than the AMPA receptor. Affinity for the glycine site was found to be influenced by both the electronic and steric properties associated with the C-4 substituent and the nature and pattern of substitution of the aromatic ring. The most active compound in this series, 6y, displaces [H-3]-glycine with an IC50 of 29 nM.