摘要:
The present invention relates to a precursor of positron emission tomography (PET) radioactive medical supplies, a preparation method thereof, and an application thereof, and more specifically, to a precursor having a tetravalent organic salt leaving group, a preparation method, and a method for preparing desired PET radioactive medical supplies in a high radiochemical yield within a short preparation time by introducing 18F using the same through a single step. The precursor having a tetravalent organic salt leaving group of the present invention can simplify the known complex multistep preparation of radioactive medical supplies into a single step, can save production costs because an excessive amount of a phase transfer catalyst is not required, facilitates separation of compounds after reaction, and enables rapid reaction velocity. The features are appropriate for the mass production of PET radioactive medical supplies by an automated synthesis system.
摘要:
The present invention relates to an apparatus for synthesizing F-18 labeled radioactive pharmaceuticals. The apparatus for synthesizing F-18 labeled radioactive pharmaceuticals includescomprises: an F-18 radioactive isotope supply part, a reagent supply part, a polymer precursor cartridge, a first heating unit, a polymer compound cartridge, a synthetic container, a second heating unit, a waste solution container, a recovery container, a transfer gas supplying part, a washing solution supplying part, a connecting tube, a plurality of control valves, and a controller.
摘要:
The present invention relates to a sulphonate precursor having a 1,2,3-triazolium salt, and to a production method and use therefor, and more specifically exhibits the advantages that the reaction rate can be increased by introducing an organic salt having a phase-transfer catalyst effect into the leaving group of the precursor and thereby inducing an intramolecular nucleophilic substitution reaction of the nucleophile and sulphonate precursor, and use of a separate phase-transfer catalyst is avoided. The invention can be used as a sulphonate precursor for the effective production of an [18F]radiopharmaceutical used in positron emission tomography.
摘要:
The present invention relates to an azetidinium salt of an N-(3-sufonyloxypropyl)-2-ß-carbomethoxy-3-ß-(4-iodophenyl)trophan compound, a selective method for preparing same and application thereof, and more particularly, provides a method for selectively preparing the azetidinium salt of the N-(3-sufonyloxypropyl)-2-ß-carbomethoxy-3-ß-(4-iodophenyl)trophan compound by dissolving the N-(3-sufonyloxypropyl)-2-ß-carbomethoxy-3-ß-(4-iodophenyl)trophan compound in a polar solvent and then heating same.
摘要:
The invention generally relates to the preparation of 18 F-!abeled radiopharmaceuticals. In particular, this invention relates to the advanced processes for an efficient eiution of [ 18 F]fluoride trapped in a cartridge filled with quaternary ammonium polymer which comprises inert non-basic and non-nucleophilic counter anions. The said methods and polymer cartridges allow the rapid preparation of suitable [ 18 F]fiuoride solution, which is also less basic to reduce the formation of byproducts, finally to increase radiochemical yield and purity of 18 F-radiopharmaceuticals.
摘要:
The present invention provides novel and advantageous processes for preparing and purifying chemical compounds such as pharmaceuticals. The processes comprise a nucleophilic substitution reaction with a moiety X wherein the leaving group L of a substrate S in the reaction is covalently attached to a purification moiety M. This concept offers a convenient and time-saving way to purify the desired product S-X from non-reacted precursors S-L-M and by-products L-M.
摘要:
Novel quinoline derivatives were prepared and evaluated their pharmaceutical activities. The quinoline derivatives according to the present invention effectively bind serotonin transporter (SERT) which is called serotonin reuptake site. Serotonin is one of the neurotransmitter and the lack of its concentration in synapse cause the depression. The quinoline derivatives in this invention can interrupt reuptake of serotonin into presynaptic neuron resulting the increasement of concentration of serotonin in synapse as well as stimulating the signal through the binding with serotonin recepter. Thus, they can be used for the prevention and treatment of mental disorder, especially depression, caused by the deficiency of serotonin concentration in synapse.
摘要:
This invention relates to novel precursors suitable for 18 F radiolabeling of glutamate derivatives, methods for preparing such compounds and its intermediates, compositions comprising such compounds, kits comprising such compounds or compositions and methods for 18 F radiolabeling of glutamate derivatives wherein the obtained 18 F radiolabeled glutamate derivatives are suitable for diagnostic imaging by Positron Emission Tomography (PET) of proliferative diseases e.g. tumor in mammals.
摘要:
The present invention relates to a solid precursor in the form of an organic salt, the solid precursor having a solid support, a method for manufacturing same, and an application thereof. The solid precursor of the present invention enables omission of the [18F]fluoride refining process using additional cartridge, and the use of excessive phase-transfer catalyst, and can easily remove remaining substance after reaction through the solid support inside the precursor. The solid precursor of the present invention is very appropriate for an automated synthesis device as an all-in-one system that can carry out overall process of [18F]fluorosis reaction, when used by charging in a cartridge.
摘要:
The present invention relates to (3-fluoro-2-hydroxy)propyl-functionalized aryl derivatives or to the pharmaceutically acceptable salts thereof, to a method for preparing same, and to a pharmaceutical composition containing same as active ingredients for the diagnosis or treatment of neurodegenerative brain diseases. The aryl derivatives of the present invention are (3-fluoro-2-hydroxy)propyl-functionalized to increase the polarity thereof, and therefore the drugs containing the aryl derivatives can easily permeate into the cerebrovascular membrane, thus increasing the effectiveness of the drugs. As the aryl derivatives of the present invention strongly bind to ß-amyloid, the aryl derivatives, when labeled with radioisotope, can be used as a diagnostic agent for non-invasively diagnosing early Alzheimer's disease. Further, the aryl derivatives of the present invention bind to low molecular ß-amyloid peptide conjugates to inhibit the generation of malignant high molecular ß-amyloid plaque, and thus can be effectively used as a therapeutic agent for neurodegenerative brain diseases such as Alzheimer's disease.