N′-3-(Trifluoromethyl)phenyl Derivatives of N-Aryl-N′-methylguanidines as Prospective PET Radioligands for the Open Channel of the N-Methyl-d-aspartate (NMDA) Receptor: Synthesis and Structure–Affinity Relationships
摘要:
N-Methyl-D-aspartate (NMDA) receptor dysfunction has been linked to several neuropsychiatric disorders, including Alzheimer's disease, epilepsy, drug addiction, and schizophrenia. A radioligand that could be used with PET to image and quantify human brain. NMDA receptors in the activated "open channel" state would be useful for research on such disorders and for the development of novel therapies,: To date, no radioligands have Shown well-validated efficacy for imaging NMDA receptors in human subjects. In order to discover improved radioligands for PET imaging, we explored structure affinity relationships in N'-3-(trifluoromethyl)phenyl derivatives of N-aryl-N'-methylguanidines, seeking high affinity and moderate lipophilicity, plus necessary amenability for labeling with a positron-emitter, either carbon-11 or fluorine-18. Among a diverse set of 80 prepared N'-3-(trifluoromethyl)phenyl derivatives, four of these compounds (13, 19, 20, and 36) displayed desirable low nanomolar affinity for inhibition of [H-3](+)-MK801 at the PCP binding site and are of interest for candidate PET radioligand development.
N′-3-(Trifluoromethyl)phenyl Derivatives of N-Aryl-N′-methylguanidines as Prospective PET Radioligands for the Open Channel of the N-Methyl-d-aspartate (NMDA) Receptor: Synthesis and Structure–Affinity Relationships
摘要:
N-Methyl-D-aspartate (NMDA) receptor dysfunction has been linked to several neuropsychiatric disorders, including Alzheimer's disease, epilepsy, drug addiction, and schizophrenia. A radioligand that could be used with PET to image and quantify human brain. NMDA receptors in the activated "open channel" state would be useful for research on such disorders and for the development of novel therapies,: To date, no radioligands have Shown well-validated efficacy for imaging NMDA receptors in human subjects. In order to discover improved radioligands for PET imaging, we explored structure affinity relationships in N'-3-(trifluoromethyl)phenyl derivatives of N-aryl-N'-methylguanidines, seeking high affinity and moderate lipophilicity, plus necessary amenability for labeling with a positron-emitter, either carbon-11 or fluorine-18. Among a diverse set of 80 prepared N'-3-(trifluoromethyl)phenyl derivatives, four of these compounds (13, 19, 20, and 36) displayed desirable low nanomolar affinity for inhibition of [H-3](+)-MK801 at the PCP binding site and are of interest for candidate PET radioligand development.
N-ARYLAMIDINE-SUBSTITUTED TRIFLUOROETHYL SULFIDE DERIVATIVES AS ACARICIDES AND INSECTICIDES
申请人:BAYER CROPSCIENCE AG
公开号:US20140315898A1
公开(公告)日:2014-10-23
The present invention relates to novel N-arylamide-substituted trifluoroethyl sulfide derivatives of the formula (I)
in which X
1
, X
2
, X
3
, X
4
, R
1
, R
2
, R
3
, n have the meanings given in the description—to their use as acaricides and insecticides for controlling animal pests and to processes and intermediates for their preparation
ARYL SULFIDE DERIVATIVES AND ARYL SULFOXIDE DERIVATIVES AS ACARICIDES AND INSECTICIDES
申请人:BAYER CROPSCIENCE AG
公开号:US20150344499A1
公开(公告)日:2015-12-03
The present invention relates to aryl sulphide and aryl sulphoxide derivatives, to their use as acaricides and insecticides for controlling animal pests and to processes and intermediates for their preparation. The aryl sulphide and aryl sulphoxide derivatives have the general structure (I)
in which the respective radicals have the meanings given in the description.
N-ARYLAMIDINE-SUBSTITUIERTE TRIFLUOROETHYLSULFID-DERIVATE ALS AKARIZIDE UND INSEKTIZIDE
申请人:Bayer CropScience AG
公开号:EP2793578B1
公开(公告)日:2018-06-06
METHOD AND SYNTHESIS
申请人:Brathe Anders
公开号:US20130060064A1
公开(公告)日:2013-03-07
The present invention provides a method for the preparation of a radiolabeled guanidine derivative, in particular wherein the radiolabeled guanidine derivative is a positron emission tomography (PET) tracer. Certain intermediates useful in said method are also provided, as well as means for carrying out said method in an automated fashion. The method of the invention provides advantages over known methods for the preparation of radiolabeled guanidine derivatives.