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120 results about "Pyrimidinedione" patented technology

Pyrimidinediones are a class of chemical compounds characterized by a pyrimidine ring substituted with two carbonyl groups.

Synthetic method for 5-chloro-6-(2-iminopyrrolidinyl-1-yl)methyl-2,4-(1H,3H)pyrimidinedione hydrochloride

The invention relates to a synthetic method for 5-chloro-6-(2-iminopyrrolidinyl-1-yl)methyl-2,4-(1H,3H)pyrimidinedione hydrochloride. The synthetic method comprises the following steps: with S-methylisothiourea sulfate as a starting raw material, subjecting S-methylisothiourea sulfate and ethyl chloroacetoacetate to a cyclization reaction under an alkaline condition so as to obtain 6-(chloromethyl)-2-(methylthio)pyrimidine-4(3H)-one; carrying out a chlorination reaction on a pyrimidine ring so as to obtain 5-chloro-6-(chloromethyl)-2-(methylthio)pyrimidine-4(3H)-one; then carrying out a hydrolysis reaction under an acidic condition so as to obtain 5-chloro-6-(chloromethyl)pyrimidine-2,4-(1H,3H)-dione; and reacting 5-chloro-6-(chloromethyl)pyrimidine-2,4-(1H,3H)-dione with 2-iminopyrrolidinyl hydrochloride so as to obtain 5-chloro-6-(2-iminopyrrolidinyl-1-yl)methyl-2,4-(1H,3H)pyrimidinedione hydrochloride, i.e., a finished product of hydrochloride. The synthetic method has the advantages of simple operation, a stable intermediate, easy availability, high yield and easy realization of industrial production.
Owner:SHANDONG BESTCOMM PHARMA CO LTD

Antiviral 2,4-pyrimidinedione derivatives and process for the preparation thereof

2,4-pyrimidinedione derivatives of formula (I) having high antiviral activity against wild-type and mutant HIV-1 and low toxicity are useful for treating AIDS (I) wherein: R<1 >is a C6-10 aryl or C3-10 heteroaryl group optionally having one or more substituents selected from the group consisting of halogen, C1-6 alkyl, C1-6 alkyl substituted with one or more halogen atoms, C3-4 cycloalkyl, cyano, nitro, hydroxy, thiohydroxy, azido, C1-6 alkoxy, oximino, C1-3 alkyloximino, O-(C1-6 alkyl)-substituted oximino, C-1-6 alkylcarbonyl, C3-6 cycloalkylcarbonyl, hydroxymethyl, azidomethlyl, C1-6 alkoxymethyl, C1-6 acyloxynethyl, carbamoyloxymethyl, anminomethyl, N-(C1-3 alkyl)aminomethyl, N,N-di(C1-3 alkyl)aminomethyl, carboxy, C1-6 alkoxycarbonyl, aziridine, amino, hydroxyethylamino, cyclopropylamino, C1-6 alkylamino, di(C1-6 alkyl)amino, trifluoroacetamido, C1-6 acylamido, carbamoyl, hydroxyethylcarbamoyl, cyclopropylcarbamoyl, C1-6 alkylcarbamoyl, di(C1-6 alkyl)carbamoyl, aminocarbamoyl, dimethylaminocarbamoyl, hydrazino, 1,1-dimethylhydrazino, imidazolyl, triazolyl and tetrazolyl; a tetrahydropyridyl or piperidyl group optionally substituted with a C1-6 alkyl or C1-6 alkoxycarbonyl group; a tetrahydropyranyl group; or a tetrahydrofuryl group; R<2 >is hydrogen, halogen, nitro, cyano, C1-3 alkoxycarbonyl, C1-3 alkylamino, di(C1-3 alkyl)amino, C1-3 alkylcarbamol, di(C1-3 alkyl)carbamoyl, C1-3 alkyl, C3-6 cycloalkyl or benzyl; R<3 >and R<4 >are each independently hydrogen, halogen, hydroxy, cyano, nitro, amino acetamido, trifluoroacetamido, azido, C1-3 alkyl, C-1-3 alkyl substituted with one or more halogen atoms, C1-3 alkoxycarbonyl, carbamoyl C1-3 alkylcarbamoyl, di(C1-3 alkyl) carbamoyl or C-1-3 alkoxy; A is O or S; and Z is O, S, C=O, NH or CH2.
Owner:KOREA RES INST OF CHEM TECH

Antiviral pyrimidinedione derivatives and process for the preparation thereof

The present invention relates to pyrimidinedione derivatives of following formula (I) which are useful as antiviral agents, especially as agents for treatment of AIDS, pharmaceutically acceptable salts thereof, process for the preparation thereof and pharmaceutical compositions containing the same, wherein R represents cyclopropyl; cyclobutyl; cyclohexyl; unsubstituted or mono-, di- or trisubstituted phenyl with a group selected from hydroxy, C1–C4 alkyl, C1–C4 alkoxy, halogen, trifluoromethyl, cyano and amino; 1- or 2-naphthyl; 9-anthracenyl; 2-anthraquinonyl; unsubstituted or substituted pyridyl with a group selected from C1–C4 alkyl, C1–C4 alkoxy, cyano and halogen; 2-, 3- or 4-quinolinyl; oxiranyl; 1-benzotriazolyl; 2-benzoxazolyl; furanyl substituted with C1–C4 alkoxycarbonyl; C1–C4 alkylcarbonyl; or benzoyl, R1 represents halogen or C1–C4 alkyl, R2 and R3 represent independently hydrogen or C1–C4 alkyl, X represents oxygen atom, and Y represents oxygen atom, sulfur atom or carbonyl.
Owner:SAMJIN PHARMA

Prolyl Hydroxylase Inhibitors

The invention described herein relates to certain pyrimidinedione N-substituted glycine derivatives of formula (I)which are antagonists of HIF prolyl hydroxylases and are useful for treating diseases benefiting from the inhibition of this enzyme, anemia being one example.
Owner:GLAXO SMITHKLINE LLC

Pyrimidinedione derivative capable of inhibiting monocarboxylate transporter

ActiveCN109422749AAltered pharmacodynamic responseChange mechanical propertiesOrganic active ingredientsNervous disorderMonocarboxylate transporterChemical compound
The invention relates to a pyrimidinedione derivative capable of inhibiting a monocarboxylate transporter, the pyrimidinedione derivative is a formula (I) compound and / or a pharmaceutically acceptablesalt thereof, and / or a stereoisomer thereof, and / or a solvate thereof, the compound has the effect of inhibiting the activity of the monocarboxylate transporter, and also comprises a pharmaceutical composition containing the formula (I) compound and the use of the pharmaceutical composition in treatment.
Owner:CHONGQING PHARMA RES INST

Tegafur derivative containing 1,3,4-thiadiazole heterocyclic ring and amide group

The invention provides a tegafur derivative containing a 1,3,4-thiadiazole heterocyclic ring and an amide group. The structural formula of the tegafur derivative is as shown in the specification. A preparation method of the tegafur derivative comprises the steps of (1) dissolving a 3-(methoxycarbonylmethyl)tegafur in methanol, dropwise adding a sodium hydroxide solution, extracting by using ethyl acetate and distilled water and separating out an organic layer and a water layer, next, extracting by using ethyl acetate and blending the organic layers, and adding anhydrous sodium sulfate to obtain 1-(tetrahydro-2-furyl)-3-carbethoxy-5-fluoro-2,4-pyrimidinedione; (2) blending 1-(tetrahydro-2-furyl)-3-carbethoxy-5-fluoro-2,4-pyrimidinedione with dioxane, then adding sulfoxide chloride to obtain a 1-(tetrahydro-2-furyl)-3-chloracetyl-5-fluoro-2,4-pyrimidinedione solution, and then adding dioxane, evenly mixing and then sealing for later use; (3) taking 2-amino-5-p-nitrophenyl-1,3,4-thiadiazole, dioxane and triethylamine, and dropwise adding the 1-(tetrahydro-2-furyl)-3-chloracetyl-5-fluoro-2,4-pyrimidinedione solution obtained in the step (2) to obtain a pure product 1-(tetrahydro-2-furyl)-3-acetamido-[5-p-nitrophenyl-(1,3,4-thiadiazole-2-yl)]-5-fluoro-2,4-pyrimidinedione. The tegafur derivative has anti-tumor effect and no obvious toxicity, and is used for clinically treating malignant tumors.
Owner:INST OF PHARMACY SHANDONG PROV ACAD OF MEDICAL SCI
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