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Class 536/125 - Isomerization


Subclass of Class 536 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein a carbohydrate is prepared by transformation
No. of patents: 77
Last issue date: 10/18/2011


1    
NumberTitleIssue Date
8039615Process for producing difructose dianhydride III crystals
The invention provides a process for producing the crystals of difructose dianhydride III (DFA III), namely a indigestible disaccharide where two fructose molecules are bonded to each other at positions 1,2′ and 2,3′ (di-D-fructofuranose-1,2′,2,3′-dianhydrid...
10/18/2011
7256202Composition and method for treatment of hepatic encephalopathy
The inventions provide an improved treatment for hepatic encephalopathy characterized by hyperammonemia and/or constipation, comprising the oral administration of polyethylene glycol (PEG) in amounts sufficient to reduce plasma levels of ammonia and/or to alleviate ...
08/14/2007
7202219Use of D-tagatose as a prebiotic food component
Oral intake of D-tagatose in a prebiotic food induces production of butyrate and stimulates the growth of beneficial bacteria in the human colon. Therefore it is believed to be useful in food or the like as preventive drug against colon cancer. ...
04/10/2007
7084131Method for preparing a polydispersed saccharide composition and resulting polydispersed saccharide composition
A method for preparing a polydispersed saccharide composition in which a fructan-containing material is dissolved in water prior to partial enzymatic treatment of the fructans. ...
08/01/2006
7018667Meltable form of sucralose
The present invention provides a meltable sucralose and acesulfame-k sweetener. This sweetener may be incorporated in a wide variety of reduced calorie food products such as cooked and hard candies, microwaveable food products, glazed food products, deep fried food ...
03/28/2006
6930150Method for making polymer mixtures and compositions thereof
A method for making a polymer blend composition includes combining at least one component A incorporating at least five percent by weight of anionic functional groups in its structure, at least one component B, preferably free of such functional groups, and at least...
08/16/2005
6861519Soluble highly branched glucose polymers and their method of production
The invention relates to soluble highly branched glucose polymers having a reducing sugar content of less than 1%, characterized in that they have a level of α-1,6 glucoside bonds greater than 10%, preferably of between 12 and 30%, a Mw value of between 0.35×10
03/01/2005
6562600Production of cyclic alternan tetrasaccharides from oligosaccharide substrates
The cyclic tetrasaccharide, cyclo{-6)-଱-D-Glcp-(1,3)-଱-D-Glcp-(1,6)-଱-D-Glcp-(1,3)-. alpha.-D-Glcp-(1-}, may be produced by alternanase hydrolysis of complex carbohydrates other than alternan. Panose, pullulan, ଱-D-Glcp-(1,6)-&...
05/13/2003
6462191Synthesis of 2-deoxy-2-fluoro-arabinose derivatives
A process for deoxofluorinating a C2 -hydroxyl group of a furanose, includes: (a) mixing the furanose and a deoxofluorinating agent in a solvent to form a reaction mixture, and (b) heating the reaction mixture to greater than about 50° C. The ...
10/08/2002
64205356-O-carbamate ketolide derivatives
The invention relates to a novel 6-O-carbamate ketolide compound or a pharmaceutically acceptable salt, ester, solvate or prodrug thereof, to a composition comprising the compound and a suitable carrier, a method of preparing the compound, and a method of...
07/16/2002
6365732Process for obtaining stereoisomers from biomass
The present invention includes a process for extracting a stereoisomer fro biomass. The method comprises providing biomass and subjecting the biomass to substantially instantaneous pressurization and depressurization to separate cellulose, hemicellulose, ...
04/02/2002
6294369L-ribose isomerase, its preparation and uses
An L-ribose isomerase which isomerizes aldoses such as L-ribose, D-lyxose, D-talose, D-mannose, L-allose and L-gulose into their corresponding ketoses such as L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose. The enzymatic reaction ...
09/25/2001
6204378Method for producing palatinitol
A novel method for making palatinitol comprising a first step of epimerising isomaltose under conditions enabling a mixture of ଱-D-glucopyranosyl-(1.fwdarw.6)-D-mannose and isomaltose to be achieved, a second step of catalytically hydrogenating the ...
03/20/2001
6156544Process for the preparation of N-acetylneuraminic acid
A method for the preparation of N-acetyl-D-neuraminic acid (NANA) N-acetyl-D-glucosamine (NAG) is described....
12/05/2000
6140498Process for the continuous production of high purity L-ribose
A process of preparing a L-ribose fraction having greater than 97% purity starting from an aqueous solution of L-arabinose is provided by utilizing an epimerization reaction conducted in the presence of a Mo compound and eluting the product formed by said...
10/31/2000
6124443Process for the hydrogenation of sugars
Epimer-free sugar alcohols can be prepared from the corresponding sugars by catalytic hydrogenation with hydrogen in aqueous solution, the hydrogenation being carried out continuously at a hydrogen pressure of 100 to 400 bar and a reaction temperature of ...
09/26/2000
6037153L-ribose isomerase, its preparation and uses
An L-ribose isomerase which isomerizes aldoses such as L-ribose, D-lyxose, D-talose, D-mannose, L-allose and L-gulose into their corresponding ketoses such as L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose. The enzymatic reaction ...
03/14/2000
6022965Method for isomerising the 10-methyl radical of erythromycin derivatives
An isomerization method wherein a compound of formula ##STR1## wherein X and y together form a 3-oxo radical, or X is a hydrogen atom and Y is either a radical a ##STR2## where R2 is OH or O-acyl, or an O-alkyl or NH2 radic...
02/08/2000
5945547Imtermediate in process to make 2', 2'-difluoronucleosides
The compound 2-deoxy-2,2-difluoro-D-erythro-pentofuranos-1-ulose-3,5-dibenzoate is described and claimed....
08/31/1999
5877311Process for isomerization of compound of aldose structure into compound of ketose structure, and isomerization agent or accelerator used therin
A process is provided which comprises isomerizing a compound having a ketose structure by the use of or in the presence of an organogermanium compound having a structural portion represented by formula (I): ##STR1## Due to the use or presence of the ...
03/02/1999
5872247Decarboxylation process for 2-ketoaldonic acids
Catalytic decarboxylation process for 2-ketoaldonic acids by nickel ions characterized in that an aqueous solution of a 2-ketoaldonic acid is put in contact with a resin carrying vinylpyridine groups. The process allows in particular ribulose, xylulose and ery...
02/16/1999
5859236Process for preparation of lignin and microcellulose
The method of the invention involves treating cellulosic vegetable matter (the "Feed Stocks") for the selective recovery of lignin (when present in the feed-stock), cellulose and hemicelluloses by: (1) reducing the material to be processed to an appropria...
01/12/1999
5856465Compositions and methods for the synthesis of chirally pure organophosphorus nucleoside derivatives
Methods for the stereospecific synthesis of chirally pure organophosphorus dinucleotide derivatives and nucleoside monomer synthons used in their synthesis are provided. These methods allow for conversion of nucleoside intermediates of unchosen sense of P...
01/05/1999
5856469Method for producing palatinitol
"A process for the preparation of palatinitol, wherein in a first stage, the epimerization of isomaltose is carried out under conditions which allow a mixture of ଱-D-glucopyranosyl-(1.fwdarw.6)-D-mannose and isomaltose to be obtained, in a second st...
01/05/1999
5831075Amino acid ester of nucleoside analogues
A process for the preparation of an amino acid ester of a nucleoside analogue comprises reacting a nucleoside analogue having an esterifiable hydroxy group with a 2-oxa-4-aza-cycloalkane-1,3-dione. Such amino acid esters of nucleoside analogues are able t...
11/03/1998
5773606Catalyst regeneration
The present invention relates to the regeneration of a supported molybdenum catalyst which has been used for the epimerisation of a saccharide. The preferred epimerisation is the conversion of glucose to mannose. The catalyst is regenerated by using an ox...
06/30/1998
5734043Separating agent for optical isomers
A separating agent which, when used as the packing material for reverse-phase liquid chromatography, has excellent baseline stability in the mobile phase and an increased number of steps of the detected peak in the measurement is provided. The agent compr...
03/31/1998
5686587Intermediate for azithromycin
A compound having formula (III). Also, a process of making azithromycin comprising reducing the compound of formula (III) and N-methylating the reduced product....
11/11/1997
5679787Process for isomerization of compound of aldose structure into compound of ketose structure, and isomerization agent or accelerator used therein
A process is provided which comprises isomerizing a compound having a ketose structure by the use of or in the presence of an organogermanium compound having a structural portion represented by formula (I): ##STR1## Due to the use or presence of the ...
10/21/1997
5665574Method for preparing N-acetylneuraminic acid
A method for preparing N-acetylneuraminic acid characterized in reacting N-acetylglucosamine with pyruvic acid in an alkaline condition by the action of N-acetylneuraminic acid lyase....
09/09/1997
5646258Method of synthesizing alkyl glucosides
A method for synthesizing alkyl glucosides by the acetalization of sugars, particularly glucose, with alcohols in excess and subsequent separation of the excess alcohol by extraction, the extraction being carried out with an extraction agent, which is clo...
07/08/1997
5550222Process for producing gamma-cyclodextrin
A process for preparing cyclooctaamylose by enzymatic reaction of starch hydrolysate with cyclodextrin glycosyltransferase in the presence of at least two complexing agents. The first is either an aliphatic ketone or an aliphatic alcohol and the second is...
08/27/1996
5543511Process for the preparation of level-off DP cellulose
Level-off DP cellulose, which can be disaggregated in aqueous suspension with the application of mechanical force to give microcrystalline cellulose, is prepared by an environmentally friendly partial hydrolysis of cellulose in such a manner that the cell...
08/06/1996
5501965Process for producing fructose 2,6-bisphosphate and purification process thereof
This invention relates to a process for the production of fructose 2,6-bisphosphate which comprises effecting reactions among (i) fructose 6-phosphate, (ii) glucose, (iii) fructose or (iv) glucose 6-phosphate, ATP and a phosphate donor, in the presence of...
03/26/1996
5472860Method for preparing N-acetylneuraminic acid by N-acetylneuraminic acid lysase at a pH of 10-12
A method for preparing N-acetylneuraminic acid characterized in reacting N-acetylglucosamine with pyruvic acid at an alkaline pH in the presence of N-acetylneuraminic acid lyase....
12/05/1995
5473061Process for the treatment of cellulose
The process for the treatment of cellulose for activation for subsequent chemical reactions by bringing the cellulose in contact with liquid ammonia at a pressure higher than atmospheric pressure in a pressure vessel and subsequent expansion by rapid redu...
12/05/1995
5466795Process for the manufacture of mannitol
A process for the manufacture of mannitol in which: in a first step, a fructose syrup containing less than 15% glucose is subjected to an enzymatic isomerization using at least one enzyme capable of interconverting fructose and mannose, the enzymatic isomeriza...
11/14/1995
5430140Starch intermediate product, a process for producing a starch intermediate product, and a process for further processing of a starch intermediate product
A process for producing a starch intermediate product in which the reactive hydroxy groups are activated by swelling and disintegrating starch with dilute aqueous-alkali lye, precipitating the disintegrated starch from an aqueous-alkali solution by adding...
07/04/1995
5424416Process for preparation of 2-deoxy-2,2-difluoro-D-ribofuranosyl-3,5-hydroxy protected-1-alkyl and aryl sulfonates and their use in preparation of 2',2'-difluoro-2'-deoxy nucleosides
A stereoselective process for preparing a ଲ-anomer enriched 2-deoxy-2,2-difluoro-D-ribofuranosyl-3,5-hydroxy protected-1-alkyl and aryl sulfonate intermediates by contacting an ଱-anomer enriched 2-deoxy-2,2-difluoro-D- ribofuranosyl-3,5-hydrox...
06/13/1995
5415695Method of preparing solid lactulose
The invention relates to a method of preparing solid forms of administration of lactulose by evaporating lactulose syrup to a water content of at most 10%, preferably 2 to 6%, cooling the thick, evaporated syrup, grinding and sieving, or breaking the soli...
05/16/1995
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