CAS: 526-97-6; Dl-Gulonic Acid

上下游产品

D-葡萄糖醛酸 D-Glucuronic Acid 03/12/6556
古洛糖 L-Gulose 6027-89-0
葡萄糖 D-Glucose 50-99-7
2-酮-L-古洛糖酸 2-Keto-L-Gulonic Acid 526-98-7
L-木糖 L-Xylose 609-06-3
L-山梨糖 L-Sorbose 87-79-6
L-古洛糖酸-Gamma-内酯 L-Gulono-1,4-Lactone 1128-23-0

📜可得然胶置于水,氧气,Cobalt(II) Acetate,Sodium Nitrite体系中,80.0 °C,1.0 Mpa 条件下,反应 7.0H,以84.1%的收率获得产物l-古洛糖酸
参考文献:一种葡萄糖酸的制备方法
标题:一种葡萄糖酸的制备方法
摘要:一种以葡萄糖为原料,采用催化氧化手段制备葡萄糖酸的方法,以空气或氧气为氧化剂,以过渡金属化合物与亚硝酸或亚硝酸盐为复合催化剂,水相氧化葡萄糖制备葡萄糖酸.该反应操作简单,条件温和,葡萄糖转化率高,产物葡萄糖酸的选择性好,具有重要的应用前景.

专利信息

专利号:US-7652172-B2
优先权日:2004-09-20
标题:Expeditious synthesis of DPD
发明人：SEMMELHACK MARTIN F; CAMPAGNA SHAWN R; BASSLER BONNIE L; FEDERLE MICHAEL J
权利人:UNIV PRINCETON
摘要:This invention provides a practical synthesis route for 4,5-dihydroxypentane-2,3-dione (DPD), an unstable small molecule which is proposed to be the source of universal signaling agents for quorum sensing in bacteria. The synthesis route includes new intermediates and allows preparation of isotopically-labeled DPD and ent-DPD. The method provides sufficient quantities of DPD for study of spontaneous binding of borate to DPD, the signal for the marine bacteria V. harveyi.

专利号:US-4259443-A
优先权日:1979-02-05
标 题 :Synthesis of ascorbic acid from lactose
发明人：DANEHY JAMES P
权利人:BERNARD WOLNAK AND ASSOCIATES
摘要:A method of synthesizing vitamin C (ascorbic acid) directly from the hydrolysis products of lactose. Lactose, economically obtained from whey, undergoes hydrolysis with a warm aqueous slurry of lactase to produce D-galactose and D-glucose. Preparing the methyl glycosides of these two sugars protects a labile C-O linkage during the oxidation of the sugars to D-galacturonic acid and D-glucuronic acid. The mixture of these acids, after the removal of the methyl group through hydrolysis, undergoes reduction with gaseous hydrogen in the presence of an Adams catalyst or Raney nickel to produce a mixture of L-gulonic acid and L-galactonic acid. Removing the water from these acids forces their conversion into the corresponding lactones. Because of the applicable rate constants, adding water to the lactones does not result in their rapid reconversion to the acids. Accordingly, they can then undergo oxidation, in the presence of an enzyme obtained from pea seeds, to L-ascorbic acid.

专利号:US-2006084800-A1
优先权日:2004-06-30
标 题 :Synthesis of aldonolactones, aldarolactones, and aldarodilactones using azeotropic distillation
发明人：CHENAULT HENRY K
权利人:CHENAULT HENRY K
摘要:Processes for making lactones and dilactones from aldaric acids, aldonic acids, and their corresponding salts by dehydrative cyclization and azeotropic distillation. The processes can be carried out in the presence of water because water is removed by azeotropic distillation.

专利号:US-4326072-A
优先权日:1980-07-01
标题:Ruthenium catalyzed hydrogenation of D-glucuronic acid
发明人：KRUSE WALTER M; MESHREKI MAKRAM H
权利人:ICI AMERICA INC
摘要:A method for the synthesis of L-gulonic acid by catalytically hydrogenating D-glucuronic acid utilizing a ruthenium-based catalyst.

专利号:US-8148527-B1
优先权日:2011-01-18
标 题:Resolution of 1-(4-methoxybenzyl)-octahydro-isoquinoline
发明人：DIVI MURALI KRISHNA PRASAD; PENDYALA SRINIVAS RAO; RAMANA LAVU VENKATA
权利人:DIVI MURALI KRISHNA PRASAD; PENDYALA SRINIVAS RAO; RAMANA LAVU VENKATA; DIVIS LAB LTD
摘要:The resolution of racemic 1-(4-methoxybenzyl)-octahydro-isoquinoline, a key intermediate in the synthesis of the antitussive agent dextromethorphan, is reported using (R)-2-(6-methoxy-2-naphthyl) propionic acid in good yields. The resolving agent and the undesired isomer of the octahydro-isoquinoline have been recovered in good yield.

专利号:WO-2006005071-A1
优先权日:2004-06-30
标题:Synthesis of aldonolactones, aldarolactones, and aldarodilactones using azeotrophic distillation
发明人：CHENAULT H KEITH
权利人:DU PONT; CHENAULT H KEITH
摘要:Processes for making lactones and dilactones from aldaric acids, aldonic acids, and their corresponding salts by dehydrative cyclization and azeotropic distillation. The processes can be carried out in the presence of water because water is removed by azeotropic distillation.