Fluoro-substituted and 13C-labeled styrylbenzene derivatives for detecting brain amyloid plaques
摘要:
Two styrylbenzene derivatives, (E,E)-1-fluoro-2,5-bis-(3-hydroxycarbonyl-4-hydroxy)styrylbenzene (FSB) and (EE)-1-bromo-2,5-bis(3-hydroxycarbonyl-4-hydroxy)styrylbenzene-alpha,alpha'-C-13(2) ([C-13]BSB), were synthesized for use as a histochemical stain to detect amyloid plaques of Alzheimer's disease (AD) brain sections. An analysis of fluorescence spectra demonstrated that FSB shows approximately twofold fluorescence intensity relative to the conventional styrylbenzene derivative, (EE)-1-bromo-2,5-bis-(3-hydroxycarbonyl-4-hydroxy) styrylbenzene (BSB). Moreover, FSB was found to stain amyloid plaques and neurofibrillary tangles of AD brains with greater fluorescence intensity and a lower level of background signals compared to BSB. These finding indicate that FSB can be an excellent fluorescent compound to label human amyloid lesions with high sensitivity and specificity. Because of the possession of a nuclide with a quantized angular momentum, both FSB and [C-13]BSB are also potential contrast agents for magnetic resonance imaging to locate AD pathologies in vivo. (C) 2004 Elsevier SAS. All rights reserved.
Compounds of formula (I)
as well as pharmaceutically acceptable salts and esters thereof, wherein L, R
1
, R
2
, m and n have the meaning given in claim
1
and which can be used in the form of pharmaceutical compositions.
公式(I)的化合物,以及 pharmaceutically acceptable salts and esters thereof,其中 L, R1, R2, m 和 n 的含义如权利要求 1 所述,并且可以以药物组合物的形式使用。
We reported here the first rapid and solvent-free template-directed preparation of cyclophanes based on bipyridinium, which was achieved using mechanical ball milling. The method affords a new strategy for construction of diverse substituted CBPQT·4PF6, which greatly shortens the reaction period, rendering this methodology practical in the field of supermolecular chemistry.
‘Organic metals’ with asymmetric acceptors: the monofluorotetracyanoquinodimethane anion
作者:John P. Ferraris、Gunzi Saito
DOI:10.1039/c39780000992
日期:——
The synthesis and properties of monofluorotetracyanoquinodimethane (FTCNQ) and several of its tetrathia- and tetraselena-fulvalene complexes are described.
描述了单氟四氰基喹二甲烷(FTCNQ)及其几种四硫杂-富硒烯和富硒富勒烯配合物的合成和性质。
SUBSTITUTED BENZOYLAMINO-INDAN-2-CARBOXYLIC ACIDS AND RELATED COMPOUNDS
申请人:CAULFIELD Thomas J.
公开号:US20100113462A1
公开(公告)日:2010-05-06
The present invention relates to novel compounds of the formula I:
wherein in any of its stereoisomeric forms or a mixture of stereoisomeric forms in any ratio, or a physiologically acceptable salt thereof, wherein the substituents are as described herein. The inventive compounds have CXCR5 inhibitory activity are particularly useful in treating or preventing various inflammatory diseases, such as rheumatoid arthritis, multiple sclerosis, lupus, Crohn's Disease, associated with the modulation of the human CXCR5 receptor.