CAS: 23397-76-4; 1,2:5,6-Di-O-Cyclohexylidene-α-D-Glucofuranose

相似化合物

871360-09-7 582-52-5 14686-89-6

上下游产品

D-glucose (-)-3-deoxy-1,2:5,6-di-O-cyclohexylidene-α-D-glucofuranos-3-yl benzoate O1,O2;O5,O6-dicyclohexyLiDene-O3-(toluene-4-sulfonyl)-α-D-glucofuranoseO1,O2;O5,O6-dicyclohexyLiDene-O3-(toluene-4-sulfonyl)-α-D-glucofuranose 1,2-O-cyclohexylidene-α-D-glucofuranose 3-O-trityl-1,2:5,6-di-O-cyclohexylidene-α-D-glucofuranose

在 Sodium Hydroxide,三乙胺体系中,用 甲醇 用作溶剂,化学反应生成1,2:5,6-二-O-环己亚基-Alpha-D-呋喃葡萄糖
参考文献:Duan,Shaoming; Binkley,Edith R.; Binkley,Roger W.,Journal Of Carbohydrate Chemistry,1995,Vol. 14,# 7,P. 1029-1034
标题:Duan,Shaoming; Binkley,Edith R.; Binkley,Roger W.,Journal Of Carbohydrate Chemistry,1995,Vol. 14,# 7,P. 1029-1034

专利信息

专利号:US-4681936-A
优先权日:1985-02-15
标 题:Preparation of sugar ketals
发明人：PFAFF KLAUS-PETER; PAUST JOACHIM; HARTMANN HORST
权利人:BASF AG
摘要:Sugar ketals are prepared by reacting a sugar with a ketone in the presence of an acid catalyst by a process in which n A. a molecular boron trifluoride compound or trifluoromethanesulfonic acid is used in an amount of only from 0.01 to 10% by weight, based on the sugar used, n B. up to a 30-fold molar excess of the ketone is used and n C. the water formed during the reaction is removed continuously from the reaction mixture. n In a particularly advantageous embodiment of the process, the boron trifluoride is used in the form of boron trifluoride etherate and, when the reaction is complete, this compound or the trifluoromethanesulfonic acid is rendered ineffective under non-aqueous conditions, after which the ketone is evaporated off and the reaction mixture is then subjected to fractional distillation. The process is particularly important for the reaction of L-sorbose with acetone to obtain 2,3:4,6-di-O-isopropylidene-L-sorbofuranose, which is required for the synthesis of ascorbic acid.

专利号:US-2012289733-A1
优先权日:2011-05-11
标 题 :Novel borate derivatives and their applications
发明人：HEISE GLENN L; MYSLINSKA MALGORZATA
权利人:HEISE GLENN L; MYSLINSKA MALGORZATA; ANDERSON DEV CO
摘要:Borates, compositions comprising chiral (cyclic and acyclic) and achiral (cyclic and acyclic) borates; chiral (cyclic and acyclic) and achiral (cyclic and acyclic) biborates; and methods for their synthesis. Additionally, a significantly improved synthetic protocol for the synthesis of wide range of boronates starting from borates or biborates and Grignard or organolithium reagents that can be used for kilo lab and commercial scale production.

专利号:US-6632940-B1
优先权日:1998-04-14
标 题 :Method for laminaribiose synthesis
发明人：YVIN JEAN-CLAUDE; JAMOIS FRANK; FERRIERES VINCENT; PLUSQUELLEC DANIEL
权利人:GOEMAR LAB SA
摘要:The invention concerns a method for preparing Laminaribiose comprising a step for glycoside binding between a donor and an acceptor of glycosyl. The invention is characterized in that the glycosyl donor is in pyranose form and corresponds to formula (II); the glycosyl acceptor is in furanose form and corresponds to formula (III); said binding step is performed in solution in an anhydrous organic solvent, at a temperature ranging between -80° C. and 40° C., for a time interval ranging between 1 minute and 8 hours, in the presence of a suitable promoter.

专利号:US-6090950-A
优先权日:1996-08-23
标 题 :Chiral hydride complexes
发明人：HEISE GLENN L
权利人:ZEELAND CHEMICALS INC
摘要:Novel chiral boron and aluminum hydride complexes, compositions comprising the chiral hydride complexes, and methods for their synthesis and use are described. The novel chiral hydride complexes are of the formulas: MBH4-n-a(R*)n(R')a; MBH2-b(R**) (R')b; MBH(R***); MBH(R*) (R''); MAlH4-n-a(R*)n(R')a; MAlH2-b(R**)(R')b; MAlH(R***); and MAlH(R*) (R''), wherein M is Na+, Li+ or K+; each R* is independently a monodentate chiral ligand; R** is a bidentate chiral ligand; R*** is a tridentate chiral ligand; R' is a monodentate achiral ligand; R'' is a bidentate achiral ligand; n is 1-3; a is 0-2; and b is 0-1, with the proviso that n+a