Synthesis, radiolabeling and evaluation of novel amine guanidine derivatives as potential positron emission tomography tracers for the ion channel of the N-methyl-d-aspartate receptor
作者:Pieter J. Klein、Marion Chomet、Athanasios Metaxas、Johannes A.M. Christiaans、Esther Kooijman、Robert C. Schuit、Adriaan A. Lammertsma、Bart N.M. van Berckel、Albert D. Windhorst
DOI:10.1016/j.ejmech.2016.04.022
日期:2016.8
N-Methyl-d-Aspartate receptor (NMDAR) is involved in many neurological and psychiatric disorders including Alzheimer's disease and schizophrenia. The aim of this study was to develop a positron emission tomography (PET) ligand to assess the bio-availability of the NMDAR ionchannel in vivo. A series of tri-N-substituted diarylguanidines was synthesized and their in vitro binding affinities for the NMDAR ion channel
的Ñ -甲基- d -天冬氨酸受体(NMDAR)参与许多神经障碍和精神障碍,包括阿尔茨海默氏病和精神分裂症。这项研究的目的是开发一种正电子发射断层扫描(PET)配体,以评估NMDAR离子通道在体内的生物利用度。合成了一系列的三-N-取代的二芳基胍,并在大鼠前脑膜级分中评估了它们对NMDAR离子通道的体外结合亲和力。化合物21,23和26与任一碳-11或氟-18并放射性标记体外在Wistar大鼠中进行了生物分布和代谢物研究。生物分布研究表明,尤其是在额叶前额皮层中摄取较高,而在小脑中摄取最低。但是,用MK-801进行预处理不会降低对放射性标记配体的吸收。另外,所有三个配体均显示出快速的新陈代谢。
The invention relates to compounds of formula: (I) or a salt or solvate thereof, wherein: R1 is -11CH2R5 or [18F]-C1-4 fluoroalkyl wherein R5 is hydrogen or C1-4 alkyl; R2 is hydrogen or C1-4 alkyl; R3 is halo; and R4 is halo, C1-4 alkylthio, or C1-4 alkyl; and their use for imaging central nervous system (CNS) receptors.
[EN] N,N-SUBSTITUTED GUANIDINE COMPOUND<br/>[FR] COMPOSÉ DE GUANIDINE N,N-SUBSTITUÉE
申请人:VERENIGING VOOR CHRISTELIJK HOGER ONDERWIJS WETENSCHAPPELIJK ONDERZOEK EN PATIENTENZORG
公开号:WO2012165956A1
公开(公告)日:2012-12-06
The invention is directed to a N, N-substituted guanidine compound or a salt or solvate thereof according to formula (1), R1RNC(NH)NR2R3, wherein R1 is methyl and R2 is hydrogen. R3 is a organic group comprising a halogen and thiomethyl substituted phenyl group. R is an organic group comprising a substituted aryl group Z wherein the substituent group is -Y-R4, wherein Y is a heteroatom chosen from the group consisting of O, S and N and R4 is a fluorinated organic group.
Synthesis and characterization ofN-(2-chloro-5-methylthiophenyl)-N′-(3-methylthiophenyl)-N′-[11C]methylguanidine [11C]CNS 5161, a candidate PET tracer for functional imaging of NMDA receptors
作者:Yongjun Zhao、Edward Robins、David Turton、Frank Brady、Sajinder K. Luthra、Erik Årstad
DOI:10.1002/jlcr.1033
日期:2006.2
potentially can be used for functionalimaging of this receptor. Herein we report the synthesis of the corresponding positron emission tomography (PET) tracer [11C]CNS5161 by means of [11C]methylation of the desmethyl guanidine precursor. [11C]CNS5161 was synthesized with a decay corrected radiochemical yield of 10% within 45 min after end of bombardment (EOB). The final product was prepared in a sterile
Synthesis of [11C]N-(2-chloro-5-thiomethylphenyl)-N?-(3-methoxyphenyl)-N?-methylguanidine ([11C]GMOM): a candidate PET tracer for imaging the PCP site of the NMDA ion channel
作者:Rikki N. Waterhouse、Filip Dumont、Abida Sultana、Norman Simpson、Marc Laruelle
DOI:10.1002/jlcr.622
日期:2002.10.15
therapeutic drugs. Since the NMDA/PCP receptor lies within the channel, it is a unique target and is theoretically accessible only when the channel is in the active and "open" state, but not when it is in the inactive or "closed" state. The physical location of the NMDA/PCP receptor not only makes it an important imaging target but also complicates the development of suitable PET and SPECT radiotracers for