CAS: 17682-70-1; ((3As,3Br,7As,8As)-2,2,5,5-Tetramethyltetrahydro-3Ah-[1,3]Dioxolo[4',5':4,5]Furo[3,2-D][1,3]Dioxin-8A-yl)Methanol

相似化合物

20881-04-3 158702-89-7 68539-16-2

上下游产品

CAS号36468-68-5 D-fructofuranose | CAS号67-64-1 丙酮 | CAS号87-79-6 L-山梨糖 | CAS号18467-77-1 调呋酸 | CAS号35673-97-3 D-fructofuranose | CAS号52507-90-1 O-Isopropyliden... | CAS号7270-77-1 L-sorbopyranose | CAS号18467-77-1 调呋酸 | CAS号19130-96-2 1-脱氧野尻霉素 | CAS号17682-71-2 2,3-O-异亚丙基-α-L-山梨糖 | CAS号58794-59-5 1-O-acetyl-2,3-... | CAS号122371-65-7 N-B°C-1,5-亚氨基-D-葡萄糖醇

L-山梨糖置于硫酸,Copper(II) Sulfate,丙酮体系中,化学反应生成双丙酮-L-山梨糖
参考文献:Maksimow Et Al.,Zhurnal Obshchei Khimii,1939,Vol. 9,P. 936,940
标题:Maksimow Et Al.,Zhurnal Obshchei Khimii,1939,Vol. 9,P. 936,940

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-4939261-A
优先权日:1984-06-08
标 题:N-substituted butyramide derivatives useful for treatment of conditions responsive to inhibition of enkephalinase
发明人：KSANDER GARY M
权利人:CIBA GEIGY CORP
摘要:Disclosed are compounds of the formula (I) wherein X and Y independently represent hydroxymethyl; cyano; carboxy; functionally modified carboxy selected from esterified carboxy, carbamoyl, and N-substituted carbamoyl; 5-tetrazolyl; 2-oxazolyl, 4,5-dihydro-2-oxazolyl, 2-imidazolyl or 4,5-dihydro-2-imidazolyl or any said grouping substituted by lower alkyl; R and R0 independently represent hydrogen, lower alkyl, (C3-C7)-cycloalkyl-lower alkyl, or aryl-lower alkyl in which aryl represents phenyl, pyridyl, thienyl, furyl, biphenyl or naphthyl, each unsubstituted or mono- or di-substituted by halogen, lower alkyl, hydroxy, acyloxy, lower alkoxy, trifluoromethyl or cyano; A represents straight chain (C2-C5)-alkylene; or A represents straight chain (C2-C5)-alkylene substituted by lower alkyl, by lower alkylthio-lower alkyl, by hydroxy-lower alkyl, by acyloxy-lower alkyl, by lower alkoxy-lower alkyl, by amino or acyl-amino, by amino-lower alkyl, by acylamino-lower alkyl, by (C3-C7)-cycloalkyl, by (C3-C7)-cycloalkyl-lower alkyl, by aryl or aryl-lower alkyl in which aryl represents phenyl or phenyl mono- or disubstituted by halogen, lower alkyl, lower alkoxy, hydroxy, acyloxy, trifluoromethyl or cyano; or A represents phenylene or cyclohexylene; pharmaceutically acceptable prodrug derivatives of any said compounds having a free carboxy group; pharmaceutically acceptable salts of any said compounds with a salt-forming group; methods for synthesis; pharmaceutical compositions thereof; and use thereof as enkephalinase inhibitors.

专利号:RU-2127738-C1
优先权日:1997-12-17
标 题 :Method of synthesis of 2,3:4,6-di-o-isopropylidene-2-keto-l- -gulonic acid sodium salt

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
专利号:US-5096925-A
优先权日:1984-06-08
标题 :N-substituted butyramide derivatives
发明人：KSANDER GARY M
权利人:CIBA GEIGY CORP
摘要:Disclosed are compounds of the formula (I) wherein X and Y independently represent hydroxymethyl; cyano; carboxy; functionally modified carboxy selected from esterified carboxy, carbamoyl, and N-substituted carbamoyl; 5-tetrazolyl; 2-oxazolyl, 4,5-dihydro-2-oxazolyl, 2-imidazoly or 4,5-dihydro-2-imidazolyl or any said grouping substituted by lower alkyl; R and Ro independently represent hydrogen, lower alkyl, (C3-C7)-cycloalkyl-lower alkyl, or aryl-lower alkyl in which aryl represents phenyl, pyridyl, thienyl, furyl, biphenyl or naphthyl, each unsubstituted or mono- or di-substituted by halogen, lower alkyl, hydroxy, acyloxy, lower alkoxy, trifluoromethyl or cyano; A represents straight chain (C2-C5)-alkylene; or A represents straight chain (C2-C5)-alkylene substituted by lower alkyl, by lower alkylthio-lower alkyl, by hydroxy-lower alkyl, by acyloxy-lower alkyl, by lower alkoxy-lower alkyl, by amino or acyl-amino, by amino-lower alkyl, by acylamino-lower alkyl, by (C3-C7)-cycloalkyl, by (C3-C7)-cycloalkyl-lower alkyl, by aryl or aryl-lower alkyl in which aryl represents phenyl or phenyl mono- or disubstituted by halogen, lower alkyl, lower alkoxy, hydroxy, acyloxy, trifluoromethyl or cyano; or A represents phenylene or cyclohexylene; pharmaceutically acceptable prodrug derivatives of any said compounds having a free carboxy group; pharmaceutically acceptable salts of any said compounds with a salt-forming group; methods for synthesis; pharmaceutical compositions thereof; and use thereof as enkephalinase inhibitors.