.alpha.-Spirocyclopentyl- and .alpha.-spirocyclopropyl-.gamma.-butyrolactones: conformationally constrained derivatives of anticonvulsant and convulsant .alpha.,.alpha.-disubstituted .gamma.-butyrolactones
摘要:
To further study the putative gamma-butyrolactone site of the GABA(A)/chloride channel complex, constrained derivatives of convulsant and anticonvulsant alpha,alpha-disubstituted gamma-butyrolactones (alpha-spirocyclopropyl- and alpha-spirocyclopentyl-gamma-butyrolactones) were synthesized and evaluated biologically. Most of the spirocyclopropyl agents were anticonvulsants when tested against pentylenetetrazole-induced seizures in mice. These agents effectively displaced (35)[S]-tert-butylbicyclophosphorothionate ((35)[S] -TBPS), a ligand for the picrotoxin binding site of the GABA(A)/chloride channel, from rat neuronal membranes and affected the GABA-mediated current in hippocampal neurons. The monomethyl-substituted spirocyclopropyl agent with a methyl group cis to the carbonyl (15) potentiates GABA-induced current whereas the trans derivative (16) blocks the current. The only anticonvulsant in the spirocyclopentyl series was the unsubstituted spirocyclopentyl compound 2. All the other substituted spirocyclopentyl targets were inactive in vivo at the highest dose tested except for convulsant 9, which has a trans 2,5-dimethyl-substituted cyclopentyl ring. All the spirocyclopentyl derivatives displaced (35)[S]-TBPS from rat neuronal membranes very effectively, and they also all potentiated GABA-induced chloride current except for convulsant 9 which blocked the current. From the data obtained in this investigation, it appears that when the volume occupied above and below the lactone ring is as large as that occupied by spirocyclopentyl agent 9, convulsant activity is observed. Groups with less volume in these areas either are inactive in the behavioral test or have anticonvulsant activity. When bound to the GABA(A)/chloride channel, the larger molecules may stabilize the closed state of the channel whereas the smaller molecules may stabilize the open state.
The present invention relates to compounds defined by formula (I) wherein the variables R1, R2, R3, m, and n are defined as in claim 1, possessing valuable pharmacological activity. Particularly, the compounds are activators of the receptor GPR40 and thus are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.
The present invention provides compounds of Formula (I):
or a stereoisomer, or a pharmaceutically acceptable salt thereof, wherein all of the variables are as defined herein. These compounds are GPR40 G protein-coupled receptor modulators which may be used as medicaments.
Rh<sub>2</sub>(II)-Catalyzed Intramolecular Aliphatic C–H Bond Amination Reactions Using Aryl Azides as the N-Atom Source
作者:Quyen Nguyen、Ke Sun、Tom G. Driver
DOI:10.1021/ja301519q
日期:2012.5.2
Rhodium(II) dicarboxylate complexes were discovered to catalyze the intramolecularamination of unactivated primary, secondary, or tertiary aliphatic C-H bonds using arylazides as the N-atom precursor. While a strong electron-withdrawing group on the nitrogen atom is typically required to achieve this reaction, we found that both electron-rich and electron-poor arylazides are efficient sources for
发现二羧酸铑 (II) 配合物使用芳基叠氮化物作为 N 原子前体催化未活化的伯、仲或叔脂肪族 CH 键的分子内胺化。虽然通常需要氮原子上的强吸电子基团来实现该反应,但我们发现富电子和缺电子芳基叠氮化物都是金属氮烯反应中间体的有效来源。
[EN] CONFORMATIONALLY CONSTRAINED CARBOXYLIC ACID DERIVATIVES USEFUL FOR TREATING METABOLIC DISORDERS<br/>[FR] DÉRIVÉS D'ACIDE CARBOXYLIQUE CONFORMATIONNELLEMENT DÉPENDANTS, UTILES DANS LE TRAITEMENT DE TROUBLES DU MÉTABOLISME
申请人:AMGEN INC
公开号:WO2009111056A1
公开(公告)日:2009-09-11
The present invention provides compounds useful, for example, for treating metabolic disorders in a subject. Such compounds have the general formula I or the general formula III: where the definitions of the variables are provided herein. The present invention also provides compositions that include, and methods for using, the compounds in preparing medicaments and for treating metabolic disorders such as, for example, type II diabetes.
[EN] PYRROLIDINE GPR40 MODULATORS<br/>[FR] MODULATEURS PYRROLIDINES DE GPR40
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014078609A1
公开(公告)日:2014-05-22
The present invention provides compounds of Formula (I): or a stereoisomer, or a pharmaceutically acceptable salt thereof, wherein all of the variables are as defined herein. These compounds are GPR40 G protein-coupled receptor modulators which may be used as medicaments.