Class 548/543 - Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.)

Subclass of Class 548 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium,
No. of patents: 419
Last issue date: 07/21/2009

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Number	Title	Issue Date
7563912	Oxopyrrolidine compounds, preparation of said compounds and their use in the manufacturing of Levetiracetam and analogues The present invention relates to an improved process for the preparation of (S)-(−)-α-ethyl-2-oxo-1-pyrrolidine acetamide and analogues thereof. The invention also relates to compounds of the general formula (6) wherein R1 is methyl or ethyl; and R	07/21/2009
7531673	Preparation of amino acid amides A process for making amino acid amides, comprising reacting an amino acid, or acid salt of an amino acid, with a halogenating agent, or with a substance that reacts with carboxylic acids to form a leaving group, to form an intermediate, then reacting the intermediat...	05/12/2009
7432225	Selective herbicides based on substituted cyclic keto-enols and safeners The present invention relates to selective herbicidal compositions comprising an effective amount of an active compound combination comprising (a) at least one substituted cyclic ketoenol of the formula (I)	10/07/2008
7414145	Method of enantioselective nucleophilic addition reaction of enamide to carbonyl group and synthesis method of optically active α-hydroxy-γ-keto acid ester and hydroxydiketone A method of an enantioselective nucleophilic addition reaction to carbonyl, which enables an asymmetric synthesis of an optically active α-hydroxy-γ-keto acid ester, an optically active α-hydroxy-γ-amino acid ester, hydroxydiketone compounds, etc. being useful a...	08/19/2008
7410995	N-linked sulfonamide of heterocyclic thioesters for vision and memory disorders This invention relates to pharmaceutical compositions and methods for treating a vision disorder, improving vision, treating memory impairment, or enhancing memory performance using N-linked sulfonamides of heterocyclic thioesters. ...	08/12/2008
7393846	Heterocyclic compounds useful for the treatment of inflammatory and allergic disorders The present invention relates to novel heterocyclic compounds, their analogs, their tautomers, their regioisomers, their stereoisomers, their enantiomers, their diastereomers, their polymorphs, their pharmaceutically acceptable salts, their appropriate N-oxides, the...	07/01/2008
7368566	Process and intermediates for preparing benzazepines Disclosed is a new process and intermediates for preparing benzazepines of Formula (I): wherein R1 and R2 are as defined herein. ...	05/06/2008
7338976	Heterocyclic esters or amides for vision and memory disorders This invention relates to pharmaceutical compositions and methods for treating a vision disorder, improving vision, treating memory impairment, or enhancing memory performance using heterocyclic esters and amides. ...	03/04/2008
7338975	Lactams as modulators of chemokine receptor activity The present application describes modulators of MCP-1 of formula (I): or pharmaceutically acceptable salt forms thereof, useful for the prevention of asthma, multiple sclerosis, artherosclerosis, and rheumatoid arthritis.	03/04/2008
7332504	Heterocyclic substituted aminoazacycles useful as central nervous system agents Heterocyclic substituted aminoazacyclic compounds of formula I Z-R3I, wherein Z is a defined aminoazacycle and R3 is a defined heterocycle moiety, pharmaceutical compositions of these compounds, and use of said compositions ...	02/19/2008
7319166	Method of purifying a raw melt of at least one monomer by crystallization The invention relates to a method for purifying a raw melt of at least one monomer by crystallization, wherein suspension crystallization is initially used and the resulting remaining melt or the suspension crystals that have been molten once again and separated are...	01/15/2008
7314932	Methods for minimizing thioamide impurities Methods for minimizing the formation of thioamide compounds using decoy agents during reactions, such as thionations of carbonyl compounds containing nitrite groups, are provided. ...	01/01/2008
7291746	Process for obtaining an antiepileptic agent A process for obtaining the pharmaceutical active ingredient, levetiracetam, by means of deaminomethylation of a sufficiently pure enantiomer intermediate (S)-(II), or by means of deaminomethylation of an addition salt thereof with an acid, wherein R1 and...	11/06/2007
7288676	Arylphenyl-substituted cyclic ketoenols The present invention relates to novel arylphenyl-substituted cyclic ketoenols of the formula (I) in which X represents halogen, alkyl, alkoxy, alkenyloxy, alkylthio, alkylsulph...	10/30/2007
7276531	G-lactam derivatives as prostaglandin agonists A gamma-lactam diene of Formula I: which is particularly useful as a medicament for the treatment of various disorders such as asthma, hypertension, osteoporosis, sexual dysfunction and fertility disorders. ...	10/02/2007
7265150	Carboxylic acids and carboxylic acid isosteres of N-heterocyclic compounds for vision and memory disorders This invention relates to novel compositions and uses of N-heterocyclic carboxylic acids and carboxylic acid isosteres for treating a vision disorder, improving vision, treating memory impairment or enhancing memory performance in an animal. ...	09/04/2007
7256211	8-azaprostaglandin derivatives and medical use thereof The pharmaceutical composition comprising the compound of the invention having 8-azaprostaglandin skeleton represented by formula (I) (wherein, all the symbols have the same meanings as that of the specification)...	08/14/2007
7238725	Tricyclic compounds useful for the treatment of inflammatory and allergic disorders: process for their preparation and pharmaceutical compositions containing them The present invention relates to novel tricyclic compounds useful for the treatment of inflammatory conditions, diseases of the central nervous and insulin resistant diabetes. ...	07/03/2007
7235581	4-pyrrolidino-phenyl-benzyl ether derivatives The invention relates to racemic or enantiomerically pure 4-pyrrolidino derivatives, processes for their preparation, pharmaceutical compositions comprising said derivatives, and their use in the prevention and treatment of illness, e.g. which are mediated by monoam...	06/26/2007
7232821	(2-((2-alkoxy)-phenyl) -cyclopent-1enyl) aromatic carbo and heterocyclic acid and derivatives Compounds of formula (I) or a pharmaceutically acceptable derivative thereof: wherein A, R1, R2, Rx, R8, R9 and n are as defined in the specification, a proc...	06/19/2007
7227029	Method for the continuous production of N-methyl-2-pyrrolidone (NMP) Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 3...	06/05/2007
7220869	Brønsted acidic room temperature ionic liquids each having a -protonated lactam cation and method for preparing the same The invention relates to a class of novel Brønsted acidic ionic liquids each having a lactam cation, and to a method for preparing the same through simple neutralization reaction of a lactam, which is available in large scale from industry, with a Brønsted inorgan...	05/22/2007
7217826	2-oxo-1-pyrrolidine derivatives, process for preparing them and their uses The invention concerns 2-oxo-1-pyrrolidine derivatives and a process for preparing them and their uses. The invention also concerns a process for preparing α-ethyl-2-oxo-1-pyrrolidine acetamide derivatives from unsaturated 2-oxo-1-pyrrolidine derivatives. Particula...	05/15/2007
7214803	Highly enantiomerically pure lactam-substituted propanoic acid derivatives and methods of making and using same The present invention relates to highly enantiomerically pure lactam-substituted propanoic acid derivatives and methods of making and using therefor. The invention involves a multi-step synthesis to produce the lactam compounds. In one step of the reaction sequence,...	05/08/2007
7214701	Active substance combinations having insecticidal and acaricdal properties The invention relates to insecticidal mixtures for protecting plants against attack by pests comprising (a) compounds of the formula (I) ...	05/08/2007
7179779	Cationic bleach activator with enhanced hydrolytic stability A novel cationic bleach activator having an enhanced hydrolytic stability is provided. The novel cationic bleach activator also leads to a reduction in strength loss of cotton fibers compared to conventional hot peroxide bleaching, and achieves this reduction in str...	02/20/2007
7157588	Ionic liquids The present invention relates to compositions of matter that are useful as ionic liquids. The compositions of the invention are based on an N-substituted pyrrolidinone, said pyrrolidinone having a pendant ammonium cation that is separated from the pyrrolidone ring b...	01/02/2007
7153978	Method for purifying N-methyl-2-pyrrolidone A method for purifying N-methyl-2-pyrrolidone is disclosed. The method comprises treating N-methyl-2-pyrrolidone with an alumina that desorbs less than 100 μmol/g of isobutylene between 225° C. and 400° C. in a standard tert-butyl alcohol dehydration test. The me...	12/26/2006
RE39419	Estrogen agonist/antagonist metabolites This invention relates to compounds that are mammalian metabolites of (−)-cis-6-phenyl-5-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-5,6,7,8-tetrahydro-naphthalene-2-ol. The compounds of the invention can be used as standards for analytical assays or as intermediates fo...	12/05/2006
7141679	Process for making N-vinyl-2-pyrrolidone A process for making N-vinyl-2-pyrrolidone (NVP) is disclosed. The process comprises dehydrating N-(2-hydroxyethyl)-2-pyrrolidone (HEP) in the presence of a catalyst and added water. Adding an effective amount of water into the dehydration process reduces the amount...	11/28/2006
7138528	Method for crystallizing N-vinyl-2-pyrrolidone A method for purifying N-vinyl-2-pyrrolidone (NVP) is disclosed. The method comprises crystallizing NVP in the presence of added water to produce purified NVP crystals and a mother liquor, and then isolating the purified crystals. In a preferred method, 0.5 to 4 wt....	11/21/2006
7132552	Process for producing levetiracetam The invention relates to a method of making optically and chemically pure levetiracetam and to the levetiracetam produced by such process. ...	11/07/2006
7129376	Method for the production of a purified melt of at least one monomer The invention relates to a method for the production of a purified melt of a monomer melt obtained by condensation, absorption or extraction in a crystallizer, wherein the inlet to the crystallizer is subjected to a mechanical solid/liquid separation operation. ...	10/31/2006
7122506	Cyclic imines as pesticides The invention relates to novel cyclic imines of the formula (I) in which Ar1 and Ar2 each represent substituted phenyl and n represents 1, 2, or 3, to ...	10/17/2006
7122682	Oxopyrrolidine compounds, preparation of said compounds and their use in the manufacturing of levetiracetam and analogues The present invention relates to an improved process for the preparation of (S)-(−)-α-ethyl-2-oxo-1-pyrrolidine acetamide and analogues thereof. The invention also relates to compounds of the general formula (6) wherein R1 is methyl or ethyl; and R	10/17/2006
7119214	Thio-substituted tricyclic and bicyclic aromatic methanesulfinyl derivatives The present invention is related to chemical compositions, processes for the preparation thereof and uses of the composition. Particularly, the present invention relates to compositions of compounds of Formula (A):	10/10/2006
7112605	Sulfonyl-containing 3,4-diaryl-3-pyrrolin-2-ones, preparation method, and medical use thereof The invention relates to sulfonyl-containing 3,4-diaryl-3-pyrrolin-2-ones compounds having formula (I) wherein R1 is selected from the group consisting of 4-methylsulfonyl, 4-aminosulfonyl, hydrogen, 2...	09/26/2006
7109370	Substituted phenylketoenols The invention relates to novel phenyl-substituted cyclic ketoenols of the formula (I) in which A, B, G, X, Y, Z and W are each as defined in the description, to processes and intermediat...	09/19/2006
7105471	Arylphenyl-substituted cyclic ketoenols The present invention relates to novel arylphenyl-substituted cyclic ketoenols of the formula (I) in which X represents halogen, alkyl, alkoxy, alkenyloxy, alkylthio, alkylsulph...	09/12/2006
7098238	Degradation fragments A pharmaceutical composition comprising a compound of formula (I) wherein X is an electron withdrawing group, Y1 is hydrogen, alkyl, alkenyl, alkynyl, aryl, heterocyclyl, —SO2R4, —CO2R4, —CONHR4	08/29/2006

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Class 548/543 - Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.)