Single Photon Emission Computed Tomography/Positron Emission Tomography Imaging and Targeted Radionuclide Therapy of Melanoma: New Multimodal Fluorinated and Iodinated Radiotracers
摘要:
This study reports a series of 14 new iodinated and fluorinated compounds offering both early imaging (I-123, I-124, F-18) and systemic treatment (I-131) of melanoma potentialities. The biodistribution of each I-125-labeled tracer was evaluated in a model of melanoma B16F0 bearing mice, using in vivo serial gamma scintigraphic imaging. Among this series, [I-125]56 emerged as the most promising compound in terms of specific tumoral uptake and in vivo kinetic profile. To validate our multimodality concept, the radiosynthesis of [F-18]56 was then optimized and this radiotracer has been successfully investigated for in vivo PET imaging of melanoma in B16F0- and B16F10-bearing mouse model. The therapeutic efficacy of [I-131]56 was then evaluated in mice bearing subcutaneous B16F0 melanoma, and a significant slow down in tumoral growth was demonstrated. These data support further development of 56 for PET imaging (F-18, I-124) and targeted radionuclide therapy (I-131) of melanoma using a single chemical structure.
Selective C-H Fluorination of Pyridines and Diazines Inspired by a Classic Amination Reaction
作者:Patrick S. Fier、John F. Hartwig
DOI:10.1126/science.1243759
日期:2013.11.22
Fluorinating Pyridine Appending fluorine substituents to carbon centers is commonly used to tune small-molecule properties in pharmaceutical and agrochemical research. However, fluorinations often require the use of corrosive, hazardous reagents. Fier and Hartwig (p. 956) present an unusually mild and convenient protocol for fluorinating carbon sites adjacent to nitrogen in pyridines and related nitrogen-bearing
Anodic fluorinations of ethyl isonicotinate (1) and related compounds have been attempted. Desired fluorinated product, 2-fluoroisonicotinate (2) was obtained in reasonable yield by direct anodic monofluorination of ethyl isonicotinate 1. The yield of 2 and the conversion of the electrochemical reaction could be improved by applying relatively lower anodic potential and by increasing the concentration
Labelled analogues of halobenzamides as multimodal radiopharmaceuticals and their precursors
申请人:INSTITUT NATIONAL DE LA SANTE ET
DE LA RECHERCHE MEDICALE (INSERM)
公开号:EP2085390A1
公开(公告)日:2009-08-05
The present invention relates to the compound of formula (I):
in which
R1 represents a hydrogen atom, an optionally labelled halogen atom, a radionuclide or a Sn[(C1-C4)alkyl]3 group,
Ar represents an aryl group or a heteroaryl group,
R9 represents a hydrogen atom, a (C1-C4)alkyl group or forms together with the group R1-Ar a ring fused with the Ar group,
A represents a group of formula (β) or (δ):
-(CH2)t- (β)
R3 and R4 independently represent a hydrogen atom, a (C1-C6)alkyl group, a (C1-C6)alkenyl group or a group of formula (y):
-Y-Z-W-R11 (γ)
wherein R11 represents an optionally labelled halogen atom, a radionuclide, an aryl or heteroaryl group optionally substituted by an optionally labelled halogen atom, a radionuclide, a -NO2 group, a -NR5R6 group, a -N+R5R6R7X- group, or a -OSO2R12 group, and their addition salts with pharmaceutically acceptable acids.
The present invention also relates to pharmaceutical compositions comprising them and to their use in diagnosis, in particular with SPECT, PET and in therapy.
Protein Kinase Inhibitors (Variants), Use Thereof in Treating Oncological Diseases and a Pharmaceutical Composition Based Thereon
申请人:Obshchestvo s ogranichennoy otvetstvennostyou "Fusion Pharma"
公开号:US20140213592A1
公开(公告)日:2014-07-31
The present invention relates to the treatment of oncological, chronic inflammatory and similar diseases with the aid of new families of chemical compounds having improved efficiency with regard to the inhibition of Abl kinase and mutant forms thereof, as well as other therapeutically significant kinases. It describes protein kinase inhibitors in the form of compounds of general formula (I) and compounds of general formula (II), or a tautomer, an individual isomer, a mixture of isomers, a pharmaceutically acceptable salt, a solvate or a hydrate thereof.