CAS: 516-02-9; Barium Oxalate

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CAS号124-38-9 二氧化碳 | CAS号62-76-0 草酸钠 | CAS号124-38-9 二氧化碳 | CAS号7440-44-0 活性炭

专利信息

专利号:WO-0142264-A1
优先权日:1999-12-10
标 题 :Method for the synthesis of sialylated oligosaccharide donors
发明人：MEHTA SEEMA; GILBERT MICHEL; WAKARCHUK WARREN W; WHITFIELD DENNIS M
权利人:CA NAT RESEARCH COUNCIL; MEHTA SEEMA; GILBERT MICHEL; WAKARCHUK WARREN W; WHITFIELD DENNIS M
摘要:A method for the synthesis of aryl thioglycosides comprising a sialylated residue of β-D-galactose is disclosed. The method consists of preparing by a chemical synthesis a non-sialylated aryl thioglycoside, and enzymatically sialylating the latter with a sialic acid in the presence of a suitable sialyltransferase. The sialylated aryl thioglycoside is then chemically derivatized by standard procedures, to provide a derivative suitable for use as a donor in chemical syntheses of sialylated oligosaccharides. The derivatized sialylated aryl thioglycosides are prepared in high yields, due to reduced number of chemical and purification steps involved in the process. Derivatized aryl thioglycosides useful as building blocks for the synthesis of biologically active sialylated oligosaccharides are also disclosed.

专利号:WO-9939201-A1
优先权日:1998-02-03
标 题 :SOLUTION AND SOLID PHASE SULFOXIDE GLYCOSYLATION: SYNTHESIS OF β-LINKED OLIGOSACCHARIDES USING 2-DEOXY-2-N-TRIFLUOROACETAMIDO-GLYCOPYRANOSYL DONORS
发明人：SILVA DOMINGOS; SOFIA MICHAEL J
权利人:INTERCARDIA RESEARCH LAB INC
摘要:The invention relates to a process for the synthesis of β-oligosaccharides. β-oligosaccharides are synthesized using alkylsulfenyl- or an arylsulfenyl-2-deoxy-2-N-trifluoroacetamidoglycopyranoses as glycosyl donors via the sulfoxide glycosylation, both in solution and solid phases. Once activated under the glycosylation conditions, these donors afford the respective β-glycosides exclusively and in high yield. Since the trifluoroacetamido group is easily removed under mild conditions, the corresponding amino group can be appropriately derivatized, even in the presence of unprotected hydroxyl groups. Disaccharide libraries are designed, constructed and analyzed. The invention also relates to a process for synthesizing the glycosyl donor.

专利号:US-7282485-B2
优先权日:2002-04-02
标题:Method of obtaining D-glucuronic acid
发明人：BELJANIN MAKSIM LVOVICH; GOLDBERG EVGENIY DANILOVICH; DYGAI ALEXANDR MICHAILOVICH; FILIMONOV VIKTOR DMITRIEVICH; KHAZANOV VENIAMIN ABRAMOVICH
权利人:OBSCHESTVO S OGRANICHENNOI OTV
摘要:A method of obtaining D-glucuronic acid. The D-glucuronic acid and its derivatives (lactone, salts, amides, etc.) are biologically high-active compounds, which are widely used in medicine and pharmaceutical chemistry for the synthesis of modified drugs as well as used as food additives, skin-care preparations, and the like. This invention provides an environmentally friendly method of obtaining D-glucuronic acid which has widespread operational possibilities. The D-glucuronic acid is obtained by heating the salts of 1,2-0-isopropylidene-D-glucuronic acid in a water-containing solution in the presence of an acid agent, for which sulphonic acid cation exchanger resins are used.

专利号:US-2007254154-A1
优先权日:2004-06-03
标 题 :Large-Scale Synthesis of Perovskite Nanostructures
发明人：WONG STANISLAUS; MAO YUANBING
权利人:WONG STANISLAUS; MAO YUANBING
摘要:Nanoscale (less than 100 nm) ferroelectric materials are provided using a facile, largescale, environmentally friendly solid-state reaction. Specifically, the solid-state reaction produces perovskite nanowires, perovskite nanocubes, and/or perovskite nanoparticles which can be employed in numerous electronic applications. The solid-state reaction includes reacting a perovskite precursor, i.e., metal oxalate(s), and a metal oxide nanostructural template in the presence of an alkali salt and a surfactant.

专利号:WO-2024017651-A1
优先权日:2022-07-20
标 题 :Improved method for converting a feedstock containing a biomass fraction for the production of hydrocarbons by means of fischer-tropsch synthesis
发明人：HERAUD JEAN-PHILIPPE; KALAYDJIAN FRANÇOIS; PIRES DA CRUZ ANTONIO; HEQUET MICHAEL
权利人:IFP ENERGIES NOW; AVRIL; AXENS; BIONEXT; THYSSENKRUPP IND SOLUTIONS AG; TOTALENERGIES ONETECH; COMMISSARIAT ENERGIE ATOMIQUE
摘要:The present invention relates to a method for converting a feedstock comprising at least one biomass fraction into hydrocarbons, the method comprising a step a) of pretreating the feedstock; a water electrolysis step b) for obtaining a stream of hydrogen and a stream of oxygen, wherein the water is at least partially produced by means of Fischer-Tropsch synthesis carried out in step e); a step c) of gasifying the feedstock pretreated in step a) in the presence of all or some of the stream of oxygen from the water electrolysis step b) so as to obtain a gaseous effluent comprising a synthesis gas; an optional step d) of conditioning the gaseous effluent comprising a synthesis gas from step c); and a step e) of synthesising, by means of Fischer-Tropsch synthesis, the gaseous effluent from step c) or, optionally, from step d) in the presence of all or some of the hydrogen from the water electrolysis step b) so as to produce a stream comprising synthesis liquid hydrocarbons and at least one gaseous effluent.

专利号:US-10118824-B2
优先权日:2013-12-17
标题:Process for purifying synthesis gas by washing with aqueous solutions of amines
发明人：CHICHE DAVID; PIERRON ANNE CLAIRE; ULLRICH NORBERT
权利人:SOFIPROTEOL; AXENS; IFP ENERGIES NOW; BIONEXT; THYSSENKRUPP IND SOLUTIONS AG; TOTAL RAFFINAGE CHIMIE; COMMISSARIAT ENERGIE ATOMIQUE; AVRIL
摘要:The invention relates to a process for purifying synthesis gas, comprising at least one stage for separating the crude synthesis gas to be treated into at least two effluents, namely a first part and a complementary part, in which the said first part is subjected to a carbon monoxide conversion stage with steam and the said complementary part is subjected to a COS and HCN catalytic hydrolysis stage, the two gas flows, namely the first part and complementary part, are then each treated separately in two stages intended to remove acid gases such as CO 2 and H 2 S, by washing with aqueous solutions of specific amines, before a recombination stage of the two treated effluents.