56441-59-9Relevant articles and documents
Synthesis and characterization of novel radiofluorinated probes for positron emission tomography imaging of monoamine oxidase B
Yoshimoto, Mitsuyoshi,Hirata, Masahiko,Kagawa, Shinya,Magata, Yasuhiro,Ohmomo, Yoshiro,Temma, Takashi
, p. 580 - 587 (2019/08/01)
Monoamine oxidase B (MAO-B), predominantly expressed in glial cells, plays an important role in neurotransmitter regulation, and MAO-B activity relates to several neuronal diseases. Here, we aimed to develop a radiofluorinated MAO-B imaging probe based on the structure of a selective MAO-B inhibitor, MD-230254. We synthesized and evaluated a series of compounds in vitro and in vivo. A series of fluorinated analogs of MD-230254 were synthesized and evaluated for inhibitory potency and selectivity toward MAO-B. 5-[4-(2-[18F]Fluorobenzyloxy)phenyl]-3-(2-cyanoethyl)-1,3,4-oxadiazol-2(3H)-one (2-[18F]FBPO) was synthesized from a corresponding tributylstannyl precursor and [18F]CH3COOF. Biodistribution after intravenous injection of 2-[18F]FBPO was evaluated in male ddY mice with or without pretreatment by inhibitors. Among the compounds synthesized and evaluated, 2-FBPO showed high inhibitory potency and selectivity toward MAO-B comparable with MD-230254. 2-[18F]FBPO was successfully synthesized by an electrophilic reaction with a high radiochemical purity of more than 99%. 2-[18F]FBPO was efficiently taken up by the brain and showed rapid blood clearance, which provided a brain/blood radioactivity ratio of 3.7 at 90 minutes postinjection. The brain radioactivity was significantly decreased by pretreatment with an MAO-B selective inhibitor. The great potential of 2-[18F]FBPO as an MAO-B imaging probe, applicable to a variety of diseases, is indicated.
Hypolipidemic analogues of ethyl 4 benzyloxybenzoate
Baggaley,Fears,Hindley,Morgan,Murrell,Thorne
, p. 1388 - 1393 (2007/10/05)
A series of compounds related to ethyl 4-benzyloxybenzoate was synthesized and evaluated for potential hypolipidemic activity in rats. Structure-activity relationships are discussed in terms of cholesterol-lowering activity together with effects on body weight gain and liver lipids. A number of the compounds inhibited cholesterol and free fatty acid biosynthesis from [1-14C]acetate in rat liver slices in vitro. Ethyl 4-benzyloxybenzoate, ethyl 4-benzyloxybenzoic acid, ethyl 4-p-bromobenzyloxybenzoate, and ethyl 4-o-methoxybenzyloxyphenyl acetate exhibited the most favorable spectrum of activity.