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Class 549/372 - Chalcogen or -C(=X), wherein X is chalcogen, bonded directly to the hetero ring


Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Compounds in which chalcogen (i.e., sulfur selenium, or
No. of patents: 128
Last issue date: 12/14/2010


1        
NumberTitleIssue Date
7851639Method for the production of a-(alpha-hydroxyalkyl)-1,3 dioxan-5-ones
A process for the synthesis of compounds of general formulas comprising the step of reacting in the presence of wherein: R...
12/14/2010
7745648Process for preparing 4-fluoro-1,3-dioxolan-2-one
A process for preparing 4-fluoro-1,3-dioxolan-2-one comprising adding 4-fluoro-1,3-dioxolan-2-one to ethylene carbonate in an amount of from 3 to 20% by weight relative to the ethylene carbonate as a solvent for the ethylene carbonate, and introducing fluorine or a ...
06/29/2010
7074462Ester compounds and their use in liquid crystalline media
The invention relates to compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I ...
07/11/2006
7060727Prodrugs of fused GABA analogs, pharmaceutical compositions and uses thereof
The present invention relates generally to prodrugs of fused GABA analogs, pharmaceutical compositions of prodrugs of fused GABA analogs, methods of making prodrugs of fused GABA analogs and methods of using prodrugs of fused GABA analogs and pharmaceutical composit...
06/13/2006
6916347Primary intermediates for oxidative coloration of hair
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): where R1 and R2 are each individually selected from a hydrogen atom, a C1
07/12/2005
6849747Fluorinated and alkylated dibenzylidene alditol derivatives
Plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials are provided. More particularly, this invention relates to certain alkyl (or alkoxy) substituted fluoro-benzylidene so...
02/01/2005
6838568Fluorinated and alkylated alditol derivatives and compositions and polyolefin articles containing same
Plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials are provided. More particularly, this invention relates to certain alkyl (or alkoxy) substituted fluoro-benzylidene so...
01/04/2005
6806375Process for the production of purine derivatives and intermediates therefor
Intermediates such as methyl 2,2-dimethyl-5-ethenyl-1,3-dioxane-5-carbonate useful to prepare antiviral compounds such as penciclovir and famciclovir are disclosed. ...
10/19/2004
6803488Process for producing fluorinated ketone
The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow...
10/12/2004
6750355Primary intermediates for oxidative coloration of hair
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): where R1 and R2 are each individually selected from a hydrogen atom, a C1
06/15/2004
6673932Primary intermediates for oxidative coloration of hair
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): ##STR1## wherein R is hydrogen, hydroxy, nitro, amino, halogen, C1 to C5 alkyl or haloalkyl, C1 to C5...
01/06/2004
6646132Information recording medium and novel oxonol compound
An information recording medium is disclosed, comprising a substrate having provided thereon a recording layer capable of recording information by a laser ray, wherein the recording layer contains a dye compound represented by formula (I-1): ##STR1##...
11/11/2003
6617350Inhibitors of aspartyl protease
The present invention relates to a novel class of sulfonamides which are aspartyl protease inhibitors. In one embodiment, this invention relates to a novel class of HIV aspartyl protease inhibitors characterized by specific structural and physicochemical ...
09/09/2003
6613743Sulfonamide inhibitors of aspartyl protease
The present invention relates to a novel class of sulfonamides of formula I which are aspartyl protease inhibitors. In one embodiment, this invention relates to a novel class of HIV aspartyl protease inhibitors characterized by specific structural and phy...
09/02/2003
6586465Esters
The present invention deals with the certain novel esters derived from specific cyclic ether containing alcohols. These products have surprising hydroalcoholic solubility and a very desirable skin feel, making them ideal candidates for use in products lik...
07/01/2003
6576596Substituted 2-benzoyl-cyclohexan-1,3-diones with herbicidal effect
The invention relates to 2-benzoylcyclohexane-1,3-diones of the formula I ##STR1## where R1, R2 are each hydrogen, nitro, halogen, cyano, thiocyanato, alkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, --OR5, --OCOR6, ...
06/10/2003
6555685Process for the production of purine derivatives and intermediates therefor
A process for preparing purine derivatives, such as famiciclovir and penciclovir, by reacting, in the presence of a palladium (0) catalyst and a ligand, a compound of the formula ##STR1## with a compound of the formula ##STR2## wherein X is H, OH or ...
04/29/2003
6548681Process for the recovery of a polyol from an aqueous solution
A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution whic...
04/15/2003
6515150Cyclic acetal compound, polymer, resist composition and patterning process
Cyclic acetal compounds of formula (1) wherein k=0 or 1 and n is an integer of 0 to 6 are novel. Using the cyclic acetal compounds as a monomer, polymers are obtained. A resist composition comprising the polymer as a base resin is sensitive to high-energy...
02/04/2003
6201009Absorption-enhancing composition for pantothenic acid derivative
A composition showing an improved bioavailability rate of pantothenic acid derivatives represented by the following general formula and improved storage stability and being applicable as drugs over an enlarged range: ##STR1## wherein R1 and R
03/13/2001
6177576Pyruvate saccaride ketals
A novel composition for supplementing the human diet having a polyol-derived pyruvate (2-keto-propionic-acid) moeity as a component....
01/23/2001
6166064Sulfonyl urea derivatives and their use in the control of interleukin-1 activity
A compound of formula (I) ##STR1## wherein R1 and R2 are as defined in the description, R2 being an aromatic group, useful in the treatment and condition selected from the group consisting of the group meningitis and ...
12/26/2000
6096692Synthetic lubricating oil
The present invention relates to a synthetic lubricating oil comprising cyclic ketals or cyclic acetals obtained by a reaction between one or more polyhydric alcohols having an even number of hydroxyl groups of not less than 4 and not more than 10 and one...
08/01/2000
5932747Method for preparing 1,3-dioxane compounds
A method for preparing 1,3-dioxane compounds of the formula (I): ##STR1## wherein R1 and R2, independently of one another, represent hydrogen or a hydrocarbon radical; and X1 and X2, independently of one an...
08/03/1999
5917059Preparation of cyclic acetals or ketals
Cyclic acetals or ketals are prepared by reacting a polyol with the appropriate aldehydes or ketones, with part of the aldehyde or ketone being distilled out during the reaction....
06/29/1999
5869702Polyol ether derivatives and production methods therefor
Polyol ether derivatives, a method for producing the polyol ether derivatives, and a working fluid composition for a refrigerating machine containing a hydrofluorocarbon and a refrigeration oil containing the polyol ether derivatives as a base oil....
02/09/1999
5859264Explosive compositions
Gamma and delta lactones of formulae (I and 11) are used as emulsifiers in explosive compositions comprising a continuous organic phase and a discontinuous aqueous phase containing an oxygen-supplying compound. In the formulae, R is hydrocarbyl, R* is hyd...
01/12/1999
5719298Methods of producing pantothenic acid derivative and its starting materials for producing the same
A method of producing a pantothenic acid derivative of formula (I): ##STR1## wherein each of R1 and R2 is different, and is a branched aliphatic hydrocarbon group having 3 to 5 carbon atoms, or a phenyl group; or a straight chai...
02/17/1998
5717106Chromene dyes
A yellow dye having the formula: ##STR1## wherein: R1, R2, R3 and R4 each independently represents hydrogen, halogen, or an alkoxy group of from 1 to about 6 carbon atoms; and Z1 and Z2
02/10/1998
5691372Oxygenated-Heterocycle containing sulfonamide inhibitors of aspartyl protease
The present invention relates to a novel class of sulfonamides which are aspartyl protease inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention a...
11/25/1997
5580993Process for the preparation of iopamidol and 5-amino-2,2-dialkyl-1,3-dioxanes
A process for the preparation of Iopamidol and 5-amino-2,2-dialkyl-1,3-dioxanes of formula ##STR1## wherein R and R1 are the same or different and represent a straight or branched C1 and C2 alkyl group or together wit...
12/03/1996
5514642Cyclohexenone oxime ethers, their preparation and their use
Cyclohexenone oxime ethers of the formula I ##STR1##...
05/07/1996
55004842-alkoxy- or acyloxy-2-aryl-1,3-propanediol or dioxane derivative, and process for its production
A compound that can be converted, at a low cost and in a simple way, into 2-aryl-1,3-propanediols serving as precursors for synthesizing felbamate acting as an antiepileptic has a structure represented by Formula (1): ##STR1## wherein Ar represents a...
03/19/1996
5488166Synthesis of sphingosines
Provided by the present invention is a process for the biocatalytic synthesis of optically pure sphingosines from achiral starting material. The stereoisomers of sphingosine are prepared from chiral arene diols using stereospecific reaction techniques to ...
01/30/1996
5438073Dermatological and/or cosmetological composition containing retinoids
Dermatological and/or cosmetological compositions containing at least one retinoid of general formula (I), ##STR1## and the use of such compounds for preparing dermatological and/or cosmetological compositions....
08/01/1995
5414121Adducts of epoxy resins and active hydrogen containing compounds containing mesogenic moieties
Adducts containing mesogenic or rodlike moieties are prepared by reacting (1) at least one compound containing an average of more than one vicinal epoxide group per molecule with (2) at least one compound containing an average of more than one reactive hy...
05/09/1995
5371271Pesticidal substituted aminophenyl carbamates
Fungicidal substituted aminophenyl carbamates of the formula ##STR1## in which X represents --CO--NR8 R9 ; --CO--OR9 ; --CO--SR9 ; --CO--R10 ; --SO2 R9 or hydrogen, in which R
12/06/1994
5360815Heteroaryl cinnamic acids as inhibitors of leukotriene biosynthesis
Compounds having the formula I: ##STR1## are inhibitors of leukotriene biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents. They are also useful in treating angina, cerebral spasm, ...
11/01/1994
5304649Hydroxy-peroxides useful as polymerization initiators
Novel hydroxy peroxides of the Structure A HO--R11 --X--OO--R (A) [wherein R--, --R11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85°-1...
04/19/1994
5283359Process for preparing albuterol, acetal, hemi-acetal, and hydrates of arylglyoxal intermediates thereof
The preparation of arylethanolamines, and in particular albuterol (salbutamol), together with their novel boron, acetal and hemi-acetal intermediates is described....
02/01/1994
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