| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 549013000 | The hetero ring is six-membered | 29 |
| 20080269506 | Chemical amplification type resist composition - The present invention provides a sulfonium salt of the formula (Ia) | 10-30-2008 |
| 20120041213 | 4-(HETEROCYCLOALKYL) BENZENE -1,3-DIOL COMPOUNDS AS TYROSINASE INHIBITORS, PROCESS FOR THE PREPARATION THEREOF AND USE THEREOF IN HUMAN MEDICINE AND ALSO IN COSMETICS - 4-(heterocycloalkyl)benzene-1,3-diol compounds are described corresponding to general formula (I) below: | 02-16-2012 |
| 20160185749 | METHOD FOR THE SYNTHESIS OF 4-(HETEROCYCLOALKYL)-BENZENE-1,3,-DIOL COMPOUNDS - A method is described for the synthesis of 4-(heterocycloalkyl)-benzene-1,3-diol compounds of general formulae (I) and (II): | 06-30-2016 |
| 549014000 | Plural ring hetero atoms in the hetero ring | 9 |
| 549015000 | Polycyclo ring system having the hetero ring as one of the cyclos | 3 |
| 20110124883 | METHOD OF PREPARING SULTINES - A method of preparing a sultine from a dihalogeno compound. The method comprises the steps of reacting the dihalogeno compound with a hydroxymethanesulfinate salt in a DMSO solvent so as to prepare the sultine. | 05-26-2011 |
| 549016000 | Tricyclo ring system having the hetero ring as one of the cyclos | 2 |
| 20130338376 | SULFONATED AROMATIC COMPOUNDS - Described are sulfonated aromatic compounds and methods of making said compounds. The compounds are useful as monomers in a variety of polymers such as polyamides and polyesters, and can impart flame resistant properties. | 12-19-2013 |
| 549017000 | Plural ring sulfurs in the hetero ring | 1 |
| 20080227989 | Methyl 2,4,9-trithiaadamantane-7-carboxylate - Methyl 2,4,9-trithiaadamantane-7-carboxylate and a method for its manufacture is disclosed. The method reacts oxidized methyl triallyl acetate with a Lewis acid and a sulphuring agent. | 09-18-2008 |
| 549018000 | Three or more ring hetero atoms in the hetero ring | 3 |
| 20100063302 | CYCLIC SULFONIUM SALT, METHOD FOR PRODUCTION OF CYCLIC SULFONIUM SALT, AND GLYCOSIDASE INHIBITOR - Disclosed are: kotalanol which has an inhibitory activity on a glucosidase; a method for producing kotalanol or a cyclic sulfonium salt which is an analogue to kotalanol by an organic synthesis technique; a cyclic sulfonium salt produced by the method; a glucosidase inhibitor comprising the compound; an anti-diabetic agent or an anti-diabetic food comprising the glucosidase inhibitor. A sulfonium compound including kotalanol can be produced by coupling a thio-sugar synthesized from D-xylose (e.g., a compound having a cyclic structure composed of 4 carbon atoms and one sulfur atom, such as 1,4-dideoxy-1,4-epithio-D-arabinitol) with a heptitol cyclic sulfate ester having a protected hydroxyl group and synthesized from a pentose (D-xylose, D-ribose, D-arabinose, D-lyxose, L-xylose, L-ribose, L-arabinose or L-lyxose) to produce a cyclic sulfonium salt having a protected hydroxyl group, and then deprotecting the hydroxyl group. | 03-11-2010 |
| 549019000 | Plural ring sulfurs in the hetero ring | 2 |
| 20090137820 | PROCESS FOR PRODUCTION OF METHYLENE DISULFONATE COMPOUND - The present invention provides a process for producing a methylene disulfonate compound in a simple manner at low cost. | 05-28-2009 |
| 20090281333 | METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER - It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. | 11-12-2009 |
| 549020000 | Two ring sulfurs in the hetero ring | 3 |
| 20090131684 | Photoacid generator, chemically amplified resist composition including the same, and associated methods - A photoacid generator represented by Formula 1 or Formula 2: | 05-21-2009 |
| 549022000 | Chalcogen or nitrogen attached indirectly to the hetero ring by nonionic bonding | 2 |
| 20090203924 | SUBSTITUTED PHENYLSULFUR TRIFLUORIDE AND OTHER LIKE FLUORINATING AGENTS - Novel substituted phenylsulfur trifluorides that act as fluorinating agents are disclosed. Also disclosed are methods for their preparation and methods for their use in introducing one or more fluorine atoms into target substrate compounds. Finally, various intermediate compounds for use in preparing substituted phenylsulfur trifluorides are provided. | 08-13-2009 |
| 20100317873 | PREPARATION OF POLYMER-FREE R-(+)-ALPHA-LIPOIC ACID - R-α-Lipoic acid and its homologs are converted to their magnesium salts in the presence of a reduced form of the acid, dihydro-(+)-lipoic acid in the case of R-α-lipoic acid itself. The reduced form serves as a polymerization inhibitor, resulting in a Mg di-R-α-lipoate product of higher purity. The reduced acid retained in the product tends to convert to the starting acid, thereby avoiding the inclusion of an extraneous polymerization inhibitor in the product. | 12-16-2010 |
| 549023000 | Polycyclo ring system having the hetero ring as one of the cyclos | 16 |
| 20090076287 | METHOD OF OBTAINING DERIVATIVES OF 4-(N-ALKYLAMINE)-5,6-DIHYDRO-4H-THIENO-[2,3-B]-THIOPYRAN - The invention is aimed at a compound of formula (I) wherein n is 0, 1 or 2, R | 03-19-2009 |
| 20090137821 | Method of making dorzolamide hydrochloride - Processes for the preparation of dorzolamide hydrochloride and an intermediate of Formula IV, | 05-28-2009 |
| 20090234140 | METHOD FOR SEPARATING OF OPTICALLY PURE THIOPHENE COMPOUNDS USING SIMULATED MOVING BED CHROMATOGRAPHY - Disclosed herein is a method of producing an optically active thiophene-based compound using a simulated moving bed adsorption separation process, and more specifically, a method of continuously separating a racemic thiophene-based compound into its optically active thiophene-based compounds having high purity, through optical resolution using the simulated moving bed process. According to the method of the current invention, a racemic mixture of a thiophene-based compound can be continuously separated into its optically active thiophene-based compounds having high purity, which is an intermediate of optically active dorzolamide acting as a topical therapeutic agent for glaucoma, using a simulated moving bed adsorption separation technique, thereby increasing industrial usability. | 09-17-2009 |
| 20090264662 | PROCESS FOR THE PREPARATION OF 5,6 -DIHYDRO -4H-4(S)-ETHYLAMINO-6(S)-METHYLTHIENO[2,3-b] THIOPYRAN-2-SULFONAMIDE- 7,7 -DIOXIDE AND ITS SALT - The present invention relates to resolution of (cis, trans) 5,6-dihydro-4H-4-ethylamino-6-methylthieno[2,3-b] thiopyran-2-sulfonamide-7,7-dioxide using dibenzoyl-L-tartaric acid monohydrate or di-p-toluoyl-L-tarrtaric acid monohydrate as a chiral resolving agent in presence of methanol to obtain hemitartarate salt, purifying it to obtain hemitartarate salt of 5,6-dihydro-4 H-4 (S)-ethyl amino-6(S) methylthieno [2,3-b] thiopyran-2-sulfonamide-7,7-dioxide with de of >99% , Chemical purity >99.5% with cis isomer content of <0.1% and further converting into its pharmaceutically acceptable salts, preferably hydrochloride salt. | 10-22-2009 |
| 20090275759 | PROCESS FOR PREPARING DORZOLAMIDE - A process for resolving dorzolamide trans racemate, which comprises reacting said racemate with (1S)-(+)-10-camphorsulfonic acid so obtaining the (4S,6S) enantiomer by selectively precipitating and recovering the camphorsulfonic acid salt thereof (dorzolamide camphorsulfonate), and neutralizing dorzolamide camphorsulfonate to obtain dorzolamide. | 11-05-2009 |
| 20100113804 | Process for Preparing Dorzolamide - There is provided a process for preparing dorzolamide and processes for preparing intermediates useful in the preparation of dorzolamide. In particular, there is provided a process for preparing an acetoamido sulfone of formula (viii) comprising oxidation of a hydroxysulfonamide of formula (vii) in the presence of an oxidizing agent selected from the group consisting of: a peracid, tert-butyl hydroperoxide, dimethyl dioxirane, selenium dioxide, m-phenanthroline di-N-oxide, nitric acid and hydrogen peroxide. There is also provided a process for preparing an acetoamidosulfone of formula (ix-a) comprising converting a hydroxy sulfone of formula (viii) to the acetoamidosulfone of formula (ix-a) in the presence of acetonitrile and an acid. There is also provided a process for separating the cis- and trans-isomers of dorzolamide from a mixture of the trans-isomer of dorzolamide and the cis-isomer of dorzolamide comprising reacting the mixture of isomers with a carboxylic acid. | 05-06-2010 |
| 20100324306 | ELECTROCHROMIC MATERIALS - Green electrochromic (EC) materials based on thiophene, and a green EC material based on pyrazine are disclosed. A first thiophene derivative (2,3-Di-thiophen-2-yl-thieno[3,4-b]pyrazine), which was previously investigated as a nonlinear optical material, is here disclosed for its use as an EC material and for its incorporation into an EC device. Synthesis of two new thiophene derivatives (2,5-di(thien-2-yl)-3,4-di(2,2,2-trifluoro-ethoxy)-thiophene and 2,5-(2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-yl)-3,4-di(2,2,2-trifluoro-ethoxy)-thiophene), and a new pyrazine derivative (2,3-dibenzyl-5,7-di(thien-2-yl) thieno[3,4-b]pyrazine) are also disclosed, since these materials are all able to selectively change state to appear a green color and can be polymerized to achieve a green EC polymer. | 12-23-2010 |
| 20110028738 | PHOTODISSOCIABLE PROTECTIVE GROUP - The present invention provides a photolabile protecting group that can be removed by light irradiation under mild conditions. More specifically, the present invention provides a method comprising protecting a reactive functional group (e.g., a hydroxyl group, amino group, carboxyl group, carbonyl group, phosphodiester group, etc.) by the photolabile protecting group, and then removing the photolabile protecting group simply by light irradiation under neutral conditions. | 02-03-2011 |
| 20130338377 | ASYMMETRIC REDUCTION PROCESS - The present invention relates to a stereoselective reduction procedure to obtain, by means of catalytic asymmetric hydrogenation by hydrogen transfer, a compound of formula (I) in which X is S or SO | 12-19-2013 |
| 549026000 | Tricyclo ring system having the hetero ring as one of the cyclos | 7 |
| 20150099893 | REAGENT FOR ENHANCING GENERATION OF CHEMICAL SPECIES - A reagent that enhances acid generation of a photoacid generator and composition containing such a reagent is described. | 04-09-2015 |
| 549027000 | Chalcogen attached directly to the hetero ring by nonionic bonding | 6 |
| 20100305336 | PREPARATION METHOD OF COPOLYMERIZABLE PHOTOINITIATORS - An intermediate for preparing (meth)acrylated photoinitiators according to Formula (I): | 12-02-2010 |
| 20110166366 | Novel Chalcogenoxanthylium Dyes for Purging Blood Pathogens and for Photodynamic Therapy - Provided are chalcogenoxanthylium compounds which can effectively be used as sensitizers in photodynamic therapy, virucides in photodynamic antimicrobial chemotherapy and reversal agents of Pgp function in cancer cells. Further provided is a general method for the preparation of chalcogenoxanthylium compounds. | 07-07-2011 |
| 20130296577 | NOVEL PHOTOINITIATORS - Novel photoinitiators provide for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer. | 11-07-2013 |
| 20140024840 | PREPARATION METHOD OF COPOLYMERIZABLE PHOTOINITIATORS - An intermediate for preparing (meth)acrylated photoinitiators according to Formula (I): | 01-23-2014 |
| 20150105565 | NOVEL PHOTOINITIATORS - The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer. | 04-16-2015 |
| 20160060243 | NOVEL PHOTOINITIATORS - The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer. | 03-03-2016 |
| 549028000 | Chalcogen or nitrogen attached directly to the hetero ring by nonionic bonding | 1 |
| 20100004465 | C-PHENYL 1-THIOGLUCITOL COMPOUND - C-phenyl 1-thioglucitol compounds of the following formula (I) or pharmaceutically acceptable salts thereof or hydrates thereof: | 01-07-2010 |
