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Class Information
Number: 544/319
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 > At 4- or 6-position
Description: Compounds wherein the chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly at the 4- or 6-position of the six-membered hetero ring.










Sub-classes under this class:

Class Number Class Name Patents
544/320 Nitrogen attached directly at 2-position by nonionic bonding 639


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Patent Number Title Of Patent Date Issued
8710098 Group of amino substituted benzoyl derivatives and their preparation and their use Apr. 29, 2014
8691573 Stem cell cultures Apr. 8, 2014
8686141 Process for preparing N-substituted hydroxypyrimidinone carboxamides Apr. 1, 2014
8685990 Pyrimidine compounds as delta opioid receptor modulators Apr. 1, 2014
8685989 Nitrogen-containing six-membered aromatic ring derivatives and pharmaceutical products containing the same Apr. 1, 2014
8664226 Compound having 3-heteroarylpyrimidin-4-(3H)-one structure and pharmaceutical preparation containing same Mar. 4, 2014
8633313 Heterocyclic compounds and their uses Jan. 21, 2014
8629156 Tryptophan hydroxylase inhibitors Jan. 14, 2014
8598179 Pyrazole-carboxamide derivatives as P2Y12 antagonists Dec. 3, 2013
8598187 Arylamide pyrimidone compounds Dec. 3, 2013
8598175 Heteroarylamide pyrimidone derivatives Dec. 3, 2013
8592437 Heteroarylamide pyrimidone compounds Nov. 26, 2013
8592435 Nitrogen-containing six-membered aromatic ring derivatives and pharmaceutical products containing the same Nov. 26, 2013
8592436 Arylamide pyrimidone derivatives Nov. 26, 2013
8569319 Pyridone amides and analogs exhibiting anti-cancer and anti-proliferative activities Oct. 29, 2013
8557797 Triazolopyridine derivatives and their therapeutic use Oct. 15, 2013
8552002 Compounds and compositions as protein kinase inhibitors Oct. 8, 2013
8552185 Preparation of azoxystrobin Oct. 8, 2013
8546411 Polymorphs of methyl (E)-2-{2-[6-(2-cyanophenoxy) pyrimidin-4-yloxy] phenyl}-3-methoxyacrylate Oct. 1, 2013
8541402 Viral polymerase inhibitors Sep. 24, 2013
8541431 Pyrimidine non-classical cannabinoid compounds and related methods of use Sep. 24, 2013
8541432 Heterobicyclic carboxamides as inhibitors for kinases Sep. 24, 2013
8524723 Polymorphs of methyl 3-(E)-2-{2-[6-(2-cyanophenoxy) pyrimidin-4-yloxy] phenyl}-3-methoxyacrylate Sep. 3, 2013
8513239 Chiral cis-imidazolines Aug. 20, 2013
8513271 Pyrimidine compounds as delta opioid receptor modulators Aug. 20, 2013
8501756 Heterobicyclic carboxamides as inhibitors for kinases Aug. 6, 2013
8486951 Cyclopropane amides and analogs exhibiting anti-cancer and anti-proliferative activities Jul. 16, 2013
8481550 Heteroaryl compounds useful as inhibitors of E1 activating enzymes Jul. 9, 2013
8471013 Process for the preparation of substituted cyanophenoxy-pyrimidinyloxy-phenyl acrylate derivatives Jun. 25, 2013
8461168 Process for the preparation of pyrimidine derivatives Jun. 11, 2013
8455489 Substituted pyrimidine compositions and methods of use Jun. 4, 2013
8431578 Organic compounds Apr. 30, 2013
8426419 Tyrosine kinase inhibitors containing a zinc binding moiety Apr. 23, 2013
8426591 2-(substituted phenyl)-6-amino-5-alkoxy, thioalkoxy and aminoalkyl-4-pyrimidinecarboxylates and their use as herbicides Apr. 23, 2013
8410122 Bicyclic heterocycle derivatives and methods of use thereof Apr. 2, 2013
8394809 Phenoxy-substituted pyrimidines as opioid receptor modulators Mar. 12, 2013
8389534 Pyrimidine non-classical cannabinoid compounds and related methods of use Mar. 5, 2013
8383639 HIV integrase inhibitors Feb. 26, 2013
8378118 Pyrazole-based thyroid receptor compounds Feb. 19, 2013
8372857 Substituted 4-hydroxypyrimidine-5-carboxamides Feb. 12, 2013
8367682 Pyrimidine derivatives and their use as pesticides Feb. 5, 2013
8362248 Substituted pyridinyl and pyrimidinyl derivatives as modulators of metabolism and the treatment of disorders related thereto Jan. 29, 2013
8357798 Process for preparing N-alkylated hydroxypyrimidinone compounds Jan. 22, 2013
8354419 Benzimidazole analogues for the treatment or prevention of flavivirus infections Jan. 15, 2013
8350025 Process for preparing 6-phenoxypyrimidin-4-OL derivatives in the presence of a quinuclidine or a N-methyl pyrrolidine derivatives Jan. 8, 2013
8334287 Imidazoles Dec. 18, 2012
8324186 4-azetidinyl-1-heteroatom linked-cyclohexane antagonists of CCR2 Dec. 4, 2012
8324229 Alkylthio pyrimidines as CRTH2 antagonists Dec. 4, 2012
8318754 Pyrimidinecarboxamide derivatives Nov. 27, 2012
8314103 Pyridyl derivatives, their preparation and use Nov. 20, 2012

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