Synthesis and evaluation of fluoroethyl cyclofenil analogs: Models for potential estrogen receptor imaging agent
摘要:
Cyclofenil analogs (2a-2f) and their fluorine-containing derivatives (3a-3f) were synthesized and evaluated as candidate ligands for positron emission tomography (PET) imaging of estrogen receptors. Most of them show relatively high binding affinities comparable with estradiol (E-2). (4-Fluoroethoxyphenyl)-(4-hydroxyphenyl) methylenecyclopentane (3a) showed both the highest binding affinity for ERs (88.6 for ER beta, 13.8 for ER alpha) and highest beta/alpha ratio (beta/alpha for 6.4-fold). The radioactive compound [F-18]3a was prepared via displacement of the corresponding mesylate precursor 4 with [F-18]fluoride (F-18: beta(+): 96.7%, T-1/2 = 109.8 min). The biodistribution studies in immature female SD rats demonstrated that the uptake in the uterus and ovaries were 1.358 +/- 0.089% ID/g, 1.439 +/- 0.214% ID/g, respectively, both of the ratios of uterus/blood and ovaries/blood was less than 2:1. Micro-PET imaging of immature female SD rats has also been reported. (C) 2012 Elsevier B.V. All rights reserved.
Practical Synthesis of FEt-penta-cyclofenil and Its Derivatives for Potential PET Imaging
摘要:
Generally, FEt-penta-cyclofenil and its derivatives have greater relative binding affinity to estradiol receptors than estradiol. (4-Fluoroethoxyphenyl)-(4'-hydroxyphenyl) methylenecyclopentane and its derivatives were synthesized for potential radioactive image agents, and their structures were characterized by ultraviolet, infrared, 1H NMR, 19F NMR, and high-resolution mass spectrometry.
Practical Synthesis of FEt-penta-cyclofenil and Its Derivatives for Potential PET Imaging
作者:Hua Zhu、Liliang Huang、Xiaoping Xu、Yu-Mei Shen
DOI:10.1080/00397910903419829
日期:2010.10.20
Generally, FEt-penta-cyclofenil and its derivatives have greater relative binding affinity to estradiol receptors than estradiol. (4-Fluoroethoxyphenyl)-(4'-hydroxyphenyl) methylenecyclopentane and its derivatives were synthesized for potential radioactive image agents, and their structures were characterized by ultraviolet, infrared, 1H NMR, 19F NMR, and high-resolution mass spectrometry.
Synthesis and evaluation of fluoroethyl cyclofenil analogs: Models for potential estrogen receptor imaging agent
Cyclofenil analogs (2a-2f) and their fluorine-containing derivatives (3a-3f) were synthesized and evaluated as candidate ligands for positron emission tomography (PET) imaging of estrogen receptors. Most of them show relatively high binding affinities comparable with estradiol (E-2). (4-Fluoroethoxyphenyl)-(4-hydroxyphenyl) methylenecyclopentane (3a) showed both the highest binding affinity for ERs (88.6 for ER beta, 13.8 for ER alpha) and highest beta/alpha ratio (beta/alpha for 6.4-fold). The radioactive compound [F-18]3a was prepared via displacement of the corresponding mesylate precursor 4 with [F-18]fluoride (F-18: beta(+): 96.7%, T-1/2 = 109.8 min). The biodistribution studies in immature female SD rats demonstrated that the uptake in the uterus and ovaries were 1.358 +/- 0.089% ID/g, 1.439 +/- 0.214% ID/g, respectively, both of the ratios of uterus/blood and ovaries/blood was less than 2:1. Micro-PET imaging of immature female SD rats has also been reported. (C) 2012 Elsevier B.V. All rights reserved.