20888-02-2Relevant academic research and scientific papers
Oligosaccharide compound and its manufacture and its intermediate
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Paragraph 0242; 0243; 0245, (2018/04/14)
The purpose of the present invention is to provide an oligosaccharide with high versatility that can produce a protected sulfate oligosaccharide that can become a manufacturing intermediate of polysulfated hyaluronic acid, and to provide a manufacturing method therefor and an intermediate thereof. Position 2 amino groups in glucosamine, galactosamine, and the like can react with saccharide receptors having an electron attracting group such as glucuronic acid and protected sulfate groups, by using a saccharide donor protected by a specific protective group.
Synthesis of 1,6-anhydro sugars catalyzed by silica supported perchloric acid
Chun, Yuexing,Yan, Shiqiang,Li, Xiangpeng,Ding, Ning,Zhang, Wei,Wang, Peng,Li, Ming,Li, Yingxia
experimental part, p. 6196 - 6198 (2011/12/01)
A new and efficient method for the preparation of 1,6-anhydro sugars using silica supported perchloric acid as a catalyst is described. The catalyst is heterogeneous and 1,6-anhydro sugars could be formed within a few minutes with good yields.
Gold-catalyzed glycosidations: Synthesis of 1,6-anhydro saccharides
Thadke, Shivaji A.,Hotha, Srinivas
experimental part, p. 5912 - 5914 (2010/11/18)
Various 1,6-anhydro sugars are synthesized utilizing salient features of gold-catalyzed glycosidations. All the reactions occurred under mild conditions in the presence of 7 mol % of AuBr3 enabling easy synthesis of 1,6-anhydro sugars from corr
Gold-catalyzed glycosidations: Unusual cleavage of the interglycosidic bond while studying the armed/disarmed effect of propargyl glycosides
Kayastha, Abhijeet K.,Hotha, Srinivas
experimental part, p. 5269 - 5272 (2010/11/03)
Armed/disarmed effect of propargyl glycosides in the presence of AuBr 3 is studied. Observed that oxophilic AuBr3 cleaves interglycosidic bond of an armed disaccharide resulting in the formation of a disaccharide and a 1,6-anhydro sugar. Trisaccharides were obtained after fine tuning the reactivity of the glycosyl donor with different protecting groups.
Studies related to synthesis of glycophosphatidylinositol membrane-bound protein anchors. 6. Convergent assembly of subunits
Madsen, Robert,Udodong, Uko E.,Roberts, Carmichad,Mootoo, David R.,Konradsson, Peter,Fraser-Reid, Bert
, p. 1554 - 1565 (2007/10/02)
Glycophosphatidylinositol anchors of membrane-bound proteins are thought to comprise a common pentasaccharide core containing mannan, glucosamine, and inositol residues. A synthetic route to this core is described. In addition, the complete heptasaccharide moiety of the rat brain Thy-1 membrane anchor, the first mammalian membrane anchor to be characterized, has been synthesized. In the case of the Thy-1 anchor, the synthetic plan is based on three building blocks comprising glucosamine-inositol, galactosamine-mannose, and trimannan residues. Although glycosyl donors other than n-pentenyl glycosides (NPGs) have been used in preparing each of these building blocks, the final assembly of the heptasaccharide utilizes NPGs as the only glycosyl donors. The mildness of the conditions for these coupling reactions has allowed us to make provisions for subsequent installation of the three phosphodiester units.
Bausteine von Oligosacchariden, XXX. Neue effektive β-Glycosidsynthese fuer Mannose-Glycoside. Synthesen von Mannose-haltigen Oligosacchariden
Paulsen, Hans,Lockhoff, Oswald
, p. 3102 - 3114 (2007/10/02)
A new method was developed for the stereo selective synthesis of oligosaccharides containing a β-linked mannose-unit which were hitherto not available by direct synthesis.The glycoside synthesis is promoted by a silversilicate-catalyst which was precipita
