Synthesis and evaluation of novel azetidine analogs as potent inhibitors of vesicular [3H]dopamine uptake
摘要:
Lobelane analogs that incorporate a central piperidine or pyrrolidine moiety have previously been reported by our group as potent inhibitors of VMAT2 function. Further central ring size reduction of the piperidine moiety in lobelane to a four-membered heterocyclic ring has been carried out in the current study to afford novel cis-and trans-azetidine analogs. These azetidine analogs (15a-15c and 22a-22c) potently inhibited [H-3]dopamine (DA) uptake into isolated synaptic vesicles (K-i <= 66 nM). The cis-4-methoxy analog 22b was the most potent inhibitor (K-i = 24 nM), and was twofold more potent that either lobelane (2a, K-i = 45 nM) or norlobelane (2b, K-i = 43 nM). The trans-methylenedioxy analog, 15c (K-i = 31 nM), was equipotent with the cis-analog, 22b, in this assay. Thus, cis-and trans-azetidine analogs 22b and 15c represent potential leads in the discovery of new clinical candidates for the treatment of methamphetamine abuse. (C) 2013 Elsevier Ltd. All rights reserved.
作者:Jack E. Baldwin、Robert M. Adlington、Richard H. Jones、Christopher J. Schofield、Constantine Zaracostas、Colin W. Greengrass
DOI:10.1016/s0040-4020(01)82070-6
日期:1986.1
biological activities of the γ-lactamanalogues (-25), (-25) and (26) of carbapenicillanicacids are described. The strategy employed for the synthesis of effected construction of a γ-lactam onto a preformed azetidine, followed by direct amination of the lactam enolate (20) with diphenylphosphinoyl-hydroxylamine. X-ray crystallographic studies demonstrated that the analogues bore a strong morphological
Azetidine derivatives, compositions and methods of treating
申请人:Fidia-Georgetown Institute for the Neurosciences
公开号:US04946839A1
公开(公告)日:1990-08-07
This invention relates to novel azetidines and derivative thereof, as well as to pharmaceutical compositions and methods of treating memory and learning disorders. Another aspect of the invention relates to a method of utilizing the compounds and compositions as biological tools and materials for characterizing excitatory amino acid receptor systems. A further aspect of the invention relates to a method of treating PCP toxicity and abuse.
Azetidine derivatives to treat memory and learning disorders
申请人:FIDIA-Georgetown Institute for the Neurosciences
公开号:US04990504A1
公开(公告)日:1991-02-05
This invention relates to novel azetidines and derivatives thereof, as well as to pharmaceutical compositions and methods of treating memory and learning disorders. Another aspect of the invention relates to a method of utilizing the compounds and compositions as biological tools and materials for characterizing excitatory amino acid receptor systems. A further aspect of the invention relates to a method of treating PCP toxicity and abuse.
Synthesis and bioactivity of a new class of rigid glutamate analogs. Modulators of the N-methyl-D-aspartate receptor
作者:Alan P. Kozikowski、Werner Tuckmantel、Ian J. Reynolds、Jarda T. Wroblewski
DOI:10.1021/jm00168a007
日期:1990.6
A variety of derivatives of azetidine-2,4-dicarboxylic acid were synthesized and examined for their ability to stimulate 45Ca2+ uptake in cultures of cerebellar granule cells. Of the compounds tested, the cis-azetidine-2,4-dicarboxylic acid (10f) was found to be the most potent agent in potentiating glutamate, aspartate, or N-methyl-D-aspartate (NMDA) stimulated 45Ca2+ uptake at the NMDA receptor. The mechanism of action of 10f was further investigated in [3H]MK-801 binding assays and [3H]GABA release from cultured embryonic rat forebrain neurons. All of the results from the functional studies of azetidine 10f are consistent with a selectivity of action at the NMDA receptor. Moreover, azetidine 10f appears to exhibit a dual type of action, behaving as a glutamate-like agonist at higher concentrations and as a positive modulator at concentrations below 50 microM.
KOZIKOWSKI, ALAN P.;TUCKMANTEL, WERNER;REYNOLDS, IAN J.;WROBLEWSKI, JARDA+, J. MED. CHEM., 33,(1990) N, C. 1561-1571
作者:KOZIKOWSKI, ALAN P.、TUCKMANTEL, WERNER、REYNOLDS, IAN J.、WROBLEWSKI, JARDA+