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Class Information
Number: 549/263
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) > Oxygen containing hetero ring (e.g., dioxirane, etc.) > Lactones (i.e., -c(=x)o-, wherein x is chalcogen, is part of the hetero ring)
Description: Compounds wherein the hetero ring is a lactone, i.e., a cyclic inner ester, wherein --O- is part of the ring, X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium).


Sub-classes under this class:

Class Number Class Name Patents
549/327 Acyclic carbon double bonded directly to a ring carbon of a four-membered lactone ring 7
549/328 Four-membered lactone ring formed 66
549/264 Spiro 226
549/266 The lactone ring has at least seven members 113
549/295 The lactone ring is five-membered 222
549/273 The lactone ring is six-membered 156


Patents under this class:
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Patent Number Title Of Patent Date Issued
7498450 Homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides thereof Mar. 3, 2009
7476647 Ether lactone Jan. 13, 2009
7473366 Process for the purification of macrolides Jan. 6, 2009
7473790 Inhibitors of hepatitis C virus RNA-dependent RNA polymerase, and compositions and treatments using the same Jan. 6, 2009
7425519 Liquid phase oxygenation reaction using tungsten species Sep. 16, 2008
7417029 Prodrug of an ice inhibitor Aug. 26, 2008
7414139 Catalytic antioxidants and methods of use Aug. 19, 2008
7387805 Flavonoid solubilizion agent and method of solubilizing flavonoid Jun. 17, 2008
7358275 Internal 1,15-lactones of fluprostenol and related prostaglandin F2a analogs and their use in the treatment of glaucoma and intraocular hypertension Apr. 15, 2008
7316884 5-methylene-1,3-dioxolan-4-one derivatives, process for their production, polymers of the derivatives, resist compositions, and pattern formation process Jan. 8, 2008
7314942 Methylenelactones syntheses in supercritical fluids Jan. 1, 2008
7220357 Method of purifying macrolides May. 22, 2007
7192982 Modulators of peroxisome proliferator activated receptors Mar. 20, 2007
7193041 Method for purification of recombinant proteins Mar. 20, 2007
7141602 Process for obtaining HMG-CoA reductase inhibitors of high purity Nov. 28, 2006
7057077 Method for producing 2- (alkyl) cycloalkenone Jun. 6, 2006
6974806 Lipid-rich plaque inhibitors Dec. 13, 2005
6958405 Polymer-encapsulated titanium zeolites for oxidation reactions Oct. 25, 2005
6949536 Sulfonylbenzene compounds as anti-inflammatory/analgesic agents Sep. 27, 2005
6906051 Lactone integrin antagonists Jun. 14, 2005
6881341 Method for separating lactone-containing high-molecular weight compounds Apr. 19, 2005
6818638 Melvinolin derivatives Nov. 16, 2004
6808724 Artemisolide compound isolated from the aerial parts of Artemisia sylvatica, isolation method, and use thereof Oct. 26, 2004
6746818 (Meth)acrylates having lactone structure, polymers, photoresist compositions and patterning process Jun. 8, 2004
6734314 Preparation of orlistat and orlistat crystalline forms May. 11, 2004
6727238 Sulfonylbenzene compounds as anti-inflammatory/analgesic agents Apr. 27, 2004
6720327 Lactone integrin antagonists Apr. 13, 2004
6720302 Method for preparing a .gamma.-unsaturated .beta.-lactone and use thereof as an aromatic and flavouring ingredient Apr. 13, 2004
6716832 Arylphenyl-substituted cyclic ketoenols Apr. 6, 2004
6696217 Photosensitive monomer, photosensitive polymer and chemically amplified resist composition comprising lactone group having acid-labile protecting group Feb. 24, 2004
6693092 Arylphenyl-substituted cyclic ketoenols Feb. 17, 2004
6673780 Sulfoxide and bis-sulfoxide compounds and compositions for cholesterol management and related uses Jan. 6, 2004
6617304 Method for producing macrocyclic lactone Sep. 9, 2003
6576135 Method for separating lactone-containing high-molecular weight compounds Jun. 10, 2003
6559322 Process for preparation of a lactone from a cyclic ketone May. 6, 2003
6538153 Method of synthesis of water soluble fullerene polyacids using a macrocyclic malonate reactant Mar. 25, 2003
6531460 Vitamin D, derivatives and remedies for inflammatory respiratory diseases containing the same Mar. 11, 2003
6504035 3-deoxy-desmycosin derivatives and process for their preparation Jan. 7, 2003
6437152 Intermediate for the synthesis of prostaglandins Aug. 20, 2002
6379751 Imparting water-repellency with polysiloxanes containing carboxyl groups Apr. 30, 2002
6369099 Method of locking 1 .alpha.-OH of vitamin D compounds in axial orientation Apr. 9, 2002
6350775 3-phenyl-furan-(5H)-2-one and dihydrofuran-2-one derivatives as antibacterial agents Feb. 26, 2002
6323347 Catalyst for preparing lactone and a method for preparing lactone Nov. 27, 2001
6302958 Sonic impinging jet crystallization apparatus and process Oct. 16, 2001
6294679 Intermediate for the synthesis of prostaglandins Sep. 25, 2001
6270768 Azalides and methods of making same Aug. 7, 2001
6222062 Beta-ketoester compounds Apr. 24, 2001
6214330 Coumarin and related aromatic-based polymeric prodrugs Apr. 10, 2001
6174833 Process for the preparation of improved vanadium-phosphorus catalysts and use thereof for the production of maleic anhydride Jan. 16, 2001
6156911 Purification of lipstatin Dec. 5, 2000

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