Class 549/296 - Plural ring oxygens in the lactone ring

Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein the five-membered lactone ring contains
No. of patents: 37
Last issue date: 03/24/2009

Number	Title	Issue Date
7507838	Process for the preparation of Z-5-carboxymethylene-1,3-dioxolan-4-ones A process for preparing Z-5-carboxymethylene-1,3-dioxolan-4-ones is provided which includes the steps of reacting a bis-ketal or bis-acetal of tartaric acid with a potassium containing base to form the carboxymethylene-1,3-dioxolan-4-one. A process for preparing HIV...	03/24/2009
7316884	5-methylene-1,3-dioxolan-4-one derivatives, process for their production, polymers of the derivatives, resist compositions, and pattern formation process A 5-methylene-1,3-dioxolan-4-one derivative and a monomer and copolymer thereof and a resist composition containing the polymer or copolymer where the 5-methylene-1,3 -dioxolan-4-one derivative is of formula (1): ...	01/08/2008
7268238	Manufacturing method and apparatus of 4-fluoroethylene carbonate The method of producing 4-fluoroethylene carbonate (FEC), in which ethylene carbonate (EC) reacts with a mixture of fluorine and nitrogen gases, includes feeding a mixture gas of fluorine gas and nitrogen gas into a reactor having ethylene carbonate charged therein,...	09/11/2007
7232916	Process for the preparation of a taxane derivative The invention relates to an improved process for the synthesis of 13-(N-Boc-β-isobutylserinyl)-14-β-hydroxybaccatin III-1,14-carbonate (I), wherein carbonation of the 1,14-hydroxy groups of the baccatin skeleton is carried out with bis(trichloromethylcarbonate and...	06/19/2007
7094805	Total synthesis of merrilactone A This invention provides a total synthesis of Merrillactone and Merrilactone analogues for use as neurotrophic agents in the treatment of neurodegenerative diseases. The invention also provides intermediates for use in the synthesis of Merrilactone and its analogues....	08/22/2006
7078432	Process for the preparation of the 14β-hydroxy-baccatin III-1,14-carbonate A process for the preparation of 14β-hydroxy-baccatin III-1,14-carbonate useful for the preparation of novel taxane derivatives with antitumor activity. ...	07/18/2006
7019150	1-deoxy taxol analogs 1-Deoxybaccatin III, 1-deoxytaxol and 1-deoxy taxol analogs and method for the preparation thereof. ...	03/28/2006
6841667	Nucleophilic kinetic resolution of cyclic substrates using silyl azides The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisome...	01/11/2005
6828347	Anti-viral multi-quinone compounds and regiospecific synthesis thereof This invention provides various biquinone and trimeric quinone derivatives. The invention also provides a method for synthesis of a multi-quinone compound including reacting a hydroxyquinone anion with a first quinone possessing a first directing group at a C-2 of t...	12/07/2004
6818766	Process for making bicalutamide and intermediates thereof Bicalutamide and/or its intermediates are made by the use of p-fluorobenzenesulfinic acid salt as a reagent. ...	11/16/2004
6803378	HIV integrase inhibitors Novel diketoacid compounds of Formula I are provided which are useful as HIV integrase inhibitors and for the treatment of AIDS or ARC. ...	10/12/2004
6800766	Hydrolytic kinetic resolution of cyclic substrates The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisome...	10/05/2004
6777440	HIV integrase inhibitors The present invention relates to the inhibition of HIV integrase, and to the treatment of AIDS or ARC by administering compounds of the following formula, or a tautomer of said compound, or a pharmaceutically acceptable salt, solvate or prodrug thereof: ...	08/17/2004
6737534	Process for the preparation of taxan derivatives A process for the preparation of the compound 13-(N-Boc-β-isobutylisoserinyl)-14β-hydroxybaccatine III 1,14-carbonate. ...	05/18/2004
6720302	Method for preparing a γ-unsaturated β-lactone and use thereof as an aromatic and flavouring ingredient (6R)-4,5,6,7-Tetrahydro 3,6-dimethyl-3H-benzo[b]furan-2-one is a compound of use in perfumery and the field of flavorings. The compound can be used to impart a minty, slightly vanilla-scented odor, and its flavor imparts sweetness and roundness to the compositions t...	04/13/2004
6583306	Methods of asymmetrically synthesizing enantiomers of Casodex, its derivatives and intermediates thereof Methods of synthesizing pure enantiomers of acylanalides such as Casodex.RTM. (bicalutamide) and its derivatives utilizing a compound having a ring structure that, when opened, provides a substituent having the structure of Formula I: ##STR1## wherei...	06/24/2003
6476251	Process for preparing spirocyclic tetronic acid derivatives The present invention relates to a novel process for preparing compounds of the formula (I) ##STR1## by reacting compounds of the formula (II) ##STR2## with a base and compounds of the formula (III) ##STR3## in which X, Y, Z, n, G, A, B, R1	11/05/2002
6350907	Matrix metalloprotease inhibitors Compounds of formula (I): ##STR1## or pharmaceutically acceptable salts thereof, or solvates of either entity, wherein the substituents have the values described herein, are useful as matrix metalloprotease (MMP) inhibitors...	02/26/2002
6307067	Palladium and boron co-catalyzed addition of oxygen nucleophiles to vinyl epoxides Nucleophilic oxygen species, such as primary alcohols, carboxylates, and water, are added to vinyl epoxides in a highly regioselective and enantioselective manner, providing a convenient route to enantiomerically enriched 1,2-diols and oxygen-containing h...	10/23/2001
6262278	Stereoselective ring opening reactions The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a ...	07/17/2001
5929232	Stereoselective ring opening reactions The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic chiral catalyst to produce a s...	07/27/1999
5912360	Dioxolane intermediates The present invention relates to intermediates, useful for the preparation of therapeutically active hydroxamic acid derivatives which are inhibitors of metalloproteinases involved in tissue degradation, and are inhibitors of the release of tumour necrosi...	06/15/1999
5559252	Process for the preparation of diamine intermediates useful in the synthesis of HIV protease inhibitors The present invention provides a process for the preparation of compounds of formula (V) below, and analogs thereof, which are useful as intermediates for the synthesis of HIV protease inhibitors, including cyclic ureas. ##STR1##...	09/24/1996
5486625	Process for the preparation of chiral intermediates useful for the synthesis of antifungal agents Described is a process for preparing chiral compounds of the formula ##STR1## wherein X1 and X2 are independently F or Cl, and Y is Cl, Br or I, comprising reacting a triol of the formula ##STR2## wherein X1 and ...	01/23/1996
5164499	Nitroaryl carbonyl compounds, nitrodihydroaryl carbonyl intermediates thereto, and processes Nitroaryl carbonyl Formula (IIA) compounds, their nitrodihydroaryl carbonyl Formula (I) intermediates, processes for preparing Formula (II) compounds, and a process for preparing Formula (I) compounds, wherein each process comprises the reaction of a nitr...	11/17/1992
5138074	Continuous catalyzed vapor phase dimeric cyclic ester process A continuous catalyzed vapor phase process for the production of dimeric cyclic esters which comprises converting the corresponding alpha-hydroxy-carboxylic acid or ester in the vapor phase over a solid catalyst, such as a silica-alumina, preferably a sil...	08/11/1992
5102906	Catechol derivatives, and preventive and remedial preparations for regressive disorders in the central nervous system containing the same Catechol derivatives which relate to the production of nerve growth factor in particular tissues of brain are disclosed. Methods for the synthesis, data on the physiological activity, and data on the toxicity of these derivatives as well as examples of prepara...	04/07/1992
5049699	Regioselective synthesis of mono-alkyl citric acid esters Disclosed are 1- and 2-mono esters of citric acid and methods for preparing them in the pure form. These novel compounds are useful as surfactants....	09/17/1991
5004832	Preparing alpha-arylalkanoic acids Compounds are described of formula ##STR1## in which: Ar represents an aryl, possibly substituted; R represents a C1 -C4 alkyl; R' represents a hydroxyl, an alkoxy, an amino group possibly mono or di-alkyl substituted, or an O--...	04/02/1991
4845243	Intermediates and their use in the synthesis of organic compounds Compounds of formula ##STR1## (wherein Ar, R, R1 and X have the meanings reported in the description) are useful intermediates for the preparation of a variety of organic compounds, also optically active, like alpha-haloketones, alpha...	07/04/1989
4824970	Intermediates for the synthesis of carboxylic acids Compounds are described of formula ##STR1## in which: Ar represents a aryl, possibly substituted; R represents a C1 -C4 alkyl; R' represents a hydroxyl, an alkoxy, an amino group possibly mono or di-alkyl substituted, or an O-M+ grou...	04/25/1989
4447625	1,3-Dioxolan-5-one derivatives The invention relates to novel 4-(1H-azolylmethyl)-1,3-dioxolan-5-one derivatives of the formula I ##STR1## and to the production and use of these compounds. In formula I, R1 and R2 are unsubstituted or substituted alkyl or phen...	05/08/1984
4384879	4-(1H-Azolylmethyl)-1,3-dioxolan-5-one derivatives, production thereof and use thereof as growth regulators and/or microbicides The invention relates to novel 4-(1H-azolylmethyl)-1,3-dioxolan-5-one derivatives of the formula I ##STR1## and to the production and use of these compounds. In formula I, R1 and R2 are unsubstituted or substituted alkyl or phen...	05/24/1983
4348322	Dioxolane derivatives The invention is concerned with novel dioxolane derivatives of the formula: ##STR1## in which Ra is hydrogen or (1-4C)alkyl and Rb is (1-4C)alkyl or phenyl optionally bearing a halogeno substituent; their production; and their u...	09/07/1982
4118399	Process for preparing perfluoro-଱-(3,6-dimethyl-1,4-dioxanyl-2-oxy)-propionic acid fluoride By reacting an N-formylated secondary amine with hexafluoro epoxide in the presence of trisdimethyl amino difluorophosphorane or hexamethyl phosphoric acid triamide mixture can be obtained consisting of perfluoro-଱-(3,6-dimethyl-1,4-dioxanyl-2-oxy)-...	10/03/1978
4002676	Hydroxyethercarboxylic acids The present invention relates to a process for producing novel hydroxyether carboxylic acids and their salts containing at least one glycolic acid ether and at least two carboxylic acids as well as to these compounds per se....	01/11/1977
3962279	Synthesis of perfluoropyruvyl fluoride dimer The dimer of perfluoropyruvyl fluoride can be made by reacting hexafluoropropene epoxide with dimethyl formamide....	06/08/1976

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Class 549/296 - Plural ring oxygens in the lactone ring