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Class Information
Number: 544/298
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) > The six-membered hetero ring consists of two nitrogens and four carbons (e.g., 1,2-diazines, etc.) > 1,3-diazines > Chalcogen bonded directly to diazine ring carbon
Description: Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to a ring carbon of the six-membered hetero ring.










Sub-classes under this class:

Class Number Class Name Patents
544/299 At 2-, 4-, and 6-positions (e.g., barbituric acid, etc.) 157
544/309 At 2-position and at 4- or 6-position 341
544/315 At 2-position 421
544/319 At 4- or 6-position 961


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
8685969 Carboline carboxamide compounds useful as kinase inhibitors Apr. 1, 2014
8685972 Pyrimidine derivatives for treatment of alzheimer's disease Apr. 1, 2014
8669254 Pyridine, pyridazine, pyrimidine or pyrazine carboxamides as HDL-cholesterol raising agents Mar. 11, 2014
8653266 Process for the production of etravirine Feb. 18, 2014
8633313 Heterocyclic compounds and their uses Jan. 21, 2014
8629102 3-hydroxyisothiazole 1-oxide derivatives Jan. 14, 2014
8623860 Azetidine derivatives, pharmaceutical compositions and uses thereof Jan. 7, 2014
8609592 2-(substituted phenyl)-6-amino-5-alkoxy, thioalkoxy and aminoalkyl-4-pyrimidinecarboxylates and their use as herbicides Dec. 17, 2013
8609676 4, 5, 6-trisubstituted pyrimidine derivatives as factor IXa inhibitors Dec. 17, 2013
8580960 Process for synthesis of phenoxy diaminopyrimidine derivatives Nov. 12, 2013
8580142 Liquid crystal compound, liquid crystal composition and liquid crystal display device Nov. 12, 2013
8575342 HIV inhibiting 5-heterocyclyl pyrimidines Nov. 5, 2013
8575186 Epiminocycloalkyl[b] indole derivatives as serotonin sub-type 6 (5-HT.sub.6) modulators and uses thereof Nov. 5, 2013
8569322 Lamivudine oxalate and preparation method thereof Oct. 29, 2013
8563557 Pyrimidine derivatives and their pharmaceutical use Oct. 22, 2013
8552002 Compounds and compositions as protein kinase inhibitors Oct. 8, 2013
8512820 Organic ionic phenylpyrimidine compounds and displays formed thereof Aug. 20, 2013
8507675 Compositions and methods for inhibition of the JAK pathway Aug. 13, 2013
8475888 Five-ring liquid crystal compound having a nitrogen-containing heterocyclic ring, liquid crystal composition and liquid crystal display device Jul. 2, 2013
8450327 CGRP antagonists May. 28, 2013
8431697 Triallyl isocyanurate, triallyl cyanurate and process for producing triallyl isocyanurate Apr. 30, 2013
8425990 Liquid crystalline compound, liquid crystalline composition, optical film, and optical laminate Apr. 23, 2013
8426426 Gyrase inhibitors and uses thereof Apr. 23, 2013
8410122 Bicyclic heterocycle derivatives and methods of use thereof Apr. 2, 2013
8404685 Dihydropyrazole derivatives as tyrosine kinase modulators for the treatment of tumors Mar. 26, 2013
8399436 N-pyrazolyl carboxamides as CRAC channel inhibitors Mar. 19, 2013
8372848 Melanin-concentrating hormone receptor antagonists and methods of use Feb. 12, 2013
8354535 Salts of 6-heterocycle substituted hexahydrophenanthridine derivatives Jan. 15, 2013
8329390 Detection of transmembrane potentials using N,N,N'-trialkyl thiobarbituric acid-derived polymethine oxonols Dec. 11, 2012
8309556 Use of compounds derived from pyrimidinetrione as acetyl cholinesterase inhibitors, compositions containing said derivatives, and the uses thereof Nov. 13, 2012
8304547 Azolecarboxamide compound or salt thereof Nov. 6, 2012
8293729 Compounds, pharmaceutical composition and methods relating thereto Oct. 23, 2012
8288404 Pyrrolidine GPR40 modulators Oct. 16, 2012
8288316 N-(1,2,5-oxadiazol-3-yl)benzamides and their use as herbicides Oct. 16, 2012
8278331 N-acyl ureas exhibiting anti-cancer and anti-proliferative activities Oct. 2, 2012
8269000 Substituted pyrimidine and triazine compounds Sep. 18, 2012
8268848 Cyclopropane compound Sep. 18, 2012
8263624 Aryl-substituted heterocycles, and use thereof Sep. 11, 2012
8242118 Arylsulfonamide derivatives for use as CCR3 antagonists in the treatment of inflammatory and immunological disorders Aug. 14, 2012
8222257 Phosphono-pent-2-en-1-yl nucleosides and analogs Jul. 17, 2012
8183251 Hydantoin compounds and pharmaceutical compositions thereof May. 22, 2012
8158021 Polymerizable liquid crystal compound, polymerizable liquid crystal composition, liquid crystalline polymer, and optical anisotropic article Apr. 17, 2012
8158640 Tetrahydroquinoline derivatives and a process for preparing the same Apr. 17, 2012
8148380 Antibacterial amide and sulfonamide substituted heterocyclic urea compounds Apr. 3, 2012
8143395 Process for the preparation of 5-substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines Mar. 27, 2012
8084618 Heterocyclic compounds and methods of use Dec. 27, 2011
8013153 Substituted pyrimidine kinase inhibitors Sep. 6, 2011
8003788 Process for synthesis of phenoxy diaminopyrimidine derivatives Aug. 23, 2011
RE42477 Carboxylic acid derivatives, their preparation and use Jun. 21, 2011
RE42462 Carboxylic acid derivatives, their preparation and use Jun. 14, 2011

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