CAS: 31387-97-0; (3R,4S,5S,6R)-2-Butoxy-6-(Hydroxymethyl)Tetrahydro-2H-Pyran-3,4,5-Triol

上下游产品

1,6-脱水-β-D-葡萄糖 Levoglucosan 498-07-7
A-无水葡萄糖酯 Alpha-D-Glucopyranose 492-62-6
D-葡萄糖 D-Glu 2280-44-6

📜4-硝基苯-β-D-吡喃葡萄糖苷,正丁醇置于dalbergia Cochinchinensis Pierre Dalcochinase N189F Mutant,Sodium Acetate体系中,用 水 作为反应溶剂,化学反应 0.08H,以96%的收率获得产物丁基 D-葡糖苷
参考文献:Substrate Specificity In Hydrolysis And Transglucosylation By Family 1 β-Glucosidases From Cassava And Thai Rosewood
标题:Substrate Specificity In Hydrolysis And Transglucosylation By Family 1 β-Glucosidases From Cassava And Thai Rosewood
摘要:Thai Rosewood (Dalbergia Cochinchinensis Pierre) Dalcochinase And Cassava (Manihot Esculenta Crantz) Linamarase Are Glycoside Hydrolase Family 1 Beta-Glucosidases With 47% Amino Acid Sequence Identity. Each Enzyme Can Hydrolyze Its Natural Substrate,Dalcochinin-8'-O-Beta-D-Glucoside And Linamarin,Respectively,But Not The Natural Substrate Of The Other Enzyme. Linamarase Can Transfer Glucose To Primary,Secondary And Tertiary Alcohols With High Efficiency,While Dalcochinase Can Transglucosylate Primary And Secondary Alcohols At Moderate Levels. In This Study,Eight Amino Acid Residues In The Aglycone Binding Pocket Of Dalcochinase Were Individually Replaced With The Corresponding Residues Of Linamarase,In Order To Identify Residues That May Account For Their Catalytic Differences. The Residues 1185 And V255 Of Dalcochinase Appeared Important For Its Substrate Specificity,With Their Respective Mutations Resulting In 24-And 12-Fold Reductions In K-Cat/k-M For The Hydrolysis Of Dalcochinin-8'-O-Beta-D-Glucoside. Transglucosylation Activity Was Improved When 1185,N189 And V255 Of Dalcochinase Were Replaced With A201,F205 And F271 Of Linamarase,Respectively,Suggesting These Residues Support Transglucosylation In Linamarase. Among These Three Mutants,Only The N189F Mutant Showed Significant Increases In The Rate Constants For The Reactivation Of Trapped Glucosyl-Enzyme Intermediates By All Alcohols. Together,Our Results Suggest That Both Hydrophobicity And Geometry Are Important Determinants For Substrate Specificity In Hydrolysis And Transglucosylation By These Family 1 Beta-Glucosidases. (C) 2010 Elsevier B.V. All Rights Reserved.
DOI:10.1016/j.Molcatb.2010.09.003

专利信息

专利号:US-6156885-A
优先权日:1997-10-30
标 题 :Process for the synthesis of alkylpolyglucosides
发明人：MERONI MARIA LUISA; PELLIZZON TULLIO
权利人:CONDEA AUGUSTA SPA
摘要:The process for the synthesis of an alkylpolyglucoside having the formula (I): n n H--(G).sub.n --O--R-- (I) n n wherein n R is linear or branched, saturated or unsaturated C 8 -C 20 alkyl; n G is a radical resulting from removal of a molecule of water from a monosaccharide; and n n is an integer from 1 to 5; n the process entailing reacting an alcohol with a monosaccharide or a compound capable of generating a monosaccharide in in situ, wherein the reaction is carried out in the presence of a catalyst consisting of one or more sterically hindered polyalkylarylsulfonic acids.

专利号:US-7767425-B2
优先权日:2001-11-16
标 题:Enzymatic synthesis of sugar acrylates
发明人：BOECKH DIETER; HAUER BERNHARD; HAERING DIETMAR
权利人:BASF AG
摘要:A process is described for the enzymatic synthesis of sugar acrylates, and a process is described for preparing polymeric sugar acrylates, the polymers obtainable by this process and their use for preparing, for example, cosmetics, drugs, laundry detergents, thickeners, protecting colloids, superabsorbents and textile sizes.

专利号:US-4739043-A
优先权日:1984-07-19
标题 :Method for the synthesis of alkyl, cycloalkyl or alcenyl aldosides or polyaldosides
发明人：DEFAYE JACQUES; WONG EMILE; PEDERSEN CHRISTIAN; CHEDIN JEAN; BOUCHU ALAIN
权利人:BEGHIN SAY SA
摘要:PCT No. PCT/FR85/00197 Sec. 371 Date Apr. 18, 1986 Sec. 102(e) Date Apr. 18, 1986 PCT Filed Jul. 18, 1985 PCT Pub. No. WO86/00906 PCT Pub. Date Feb. 13, 1986.The process comprises the action of a saturated aliphatic or cycloaliphatic alcohol or an aliphatic or cycloaliphatic alcohol comprising a double ethylenic bound not situated in alpha of the hydroxyl group with an aldose, aldoside or polyaldoside in the solvent and reactant formed by the hydrogen fluoride. Application to the synthesis of surfactants or as additives for rigidifying polyurethane foams.

专利号:US-10442830-B2
优先权日:2014-12-03
标题:Synthesis of monoethers of sugar comprising a long alkyl chain and uses thereof as a surfactant
发明人：GOZLAN CHARLOTTE; DUCLOS MARIE-CHRISTINE; DUGUET NICOLAS; LEMAIRE MARC; REDL ANDREAS
权利人:TEREOS STARCH & SWEETENERS BELGIUM; UNIV CLAUDE BERNARD LYON; CENTRE NAT RECH SCIENT
摘要:A process for obtaining a mixture of C4-C8 and C9-C18 alkyl monoether of saccharide, comprising: a) a first step of acetalization or trans-acetalization of a saccharide or of a mixture of saccharides with a C4-C8 aliphatic aldehyde or the acetal thereof, b) a second consecutive or simultaneous step of acetalization or trans-acetalization of the product obtained in a) of the saccharide or mixture of saccharides with a C9-C18 aliphatic aldehyde or the acetal thereof, c) a step of catalytic hydrogenolysis of the saccharide acetals obtained, and d) a step of recovery of a mixture of C4-C8 and C9-C18 alkyl saccharide monoethers. The invention further relates to a mixture of C4-C8 and C9-C18 alkyl saccharide monoethers and the use thereof as a surfactant.

专利号:US-7825268-B2
优先权日:2003-12-23
标 题:Alkoxylactones, alkoxylactams and alkoxythiolactams for controlling processes based on microbial interaction
发明人：STUMPE STEFAN; BREVES ROLAND; HUCHEL URSULA; JANSSEN FRANK; HAETZELT ANDRE
权利人:HENKEL AG & CO KGAA
摘要:Compounds of the Formula I, n nwherein A 1 is O or NH; A 2 is O or S; each of R 1 and R 2 is independently hydrogen, a methyl or C 2 -C 8 -saturated or mono- or doubly unsaturated, branched or linear hydrocarbon group; and R 3 is a C 1 -C 18 -saturated or mono- or doubly unsaturated, branched or linear hydrocarbon group wherein, each of R 1 , R 2 and R 3 comprises a heteroatom selected from the group consisting of O and S in the chain and/or is mono- or multiply-substituted by a substituent selected from the group consisting of halogen, hydroxy, C 1 -C 6 -alkyl, trifluoromethyl, C 1 -C 6 -alkoxy, C 6 -C 10 -aryl, and C 1 -C 6 -alkyl-C 6 -C 10 -aryl are useful for controlling the interaction process between microorganisms such as in the development and/or maturation of biofilms; multicellular swarm behavior; the concerted development of antibiotic resistances; the concerted synthesis of antibiotics; the concerted synthesis of pigments; the concerted production of extracellular enzymes; or the concerted production of virulence factors.

专利号:WO-2011061144-A2
优先权日:2009-11-20
标题:The present invention relates to the use of beta-(1, 3)- beta-(1, 4) glucan with an average molecular weight of from 5.000 to 150.000 da for the increase of synthesis of collagen