Zobrazeno 1 - 10 of 21 pro vyhledávání: '"Elisabeth Eckhardt"'
1
Rhizobial Saccharides Part 3. Unexpected α-Selective Glycosylation During Synthesis of Pyruvated Tetrasaccharide Fragments Related to Exopolysaccharides of Rhizobium Leguminosarum
Autor: Dirk Keller, Thomas Ziegler, Elisabeth Eckhardt
Publikováno v: Journal of Carbohydrate Chemistry. 16:719-738
The two diastereomeric tetrasaccharide allyl glycosides 3,4-Py-β-D-Galp-(1→6)-β-D-Galp-(1→6)-β-D-Glcp-(1→6)-α-D-Galp-(1→O-allyl) related to the exopolysaccharide of Rhizobium leguminosarum biovar phaseoli 127 K 87 having an (R)- and (S)-c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::196bbe8426fe321020ae2fa32652268c
https://doi.org/10.1080/07328309708006537
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2
Rhizobial saccharides. Part. 4. Unusual Reactivity of Pyruvated Glycosyl Donors during construction of rhizobial exopolysaccharide fragments
Autor: Thomas Ziegler, Elisabeth Eckhardt
Publikováno v: Journal für Praktische Chemie/Chemiker-Zeitung. 339:534-540
Two pyruvated galactosyl donors, 2,3-di-O-benzoyl-4,6-O-[1-(R)-methoxycarbonyl(ethylidene)]-α-D-galactopyranosyl chloride (6) and trichloroacetimidate 13, were coupled to position 3 of suitably protected mono and disaccharide benzyl glucoside accept
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6b4d2161c11dc9cd8133c1bd7b03b91
https://doi.org/10.1002/prac.19973390196
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3
Synthetic studies toward pyruvate acetal-containing saccharides: En route to the efficient synthesis of Rhizobium-related exopolysaccharide fragments
Autor: Elisabeth Eckhardt, Thomas Ziegler
Publikováno v: Carbohydrate Research. 264:253-269
The disaccharide building block benzyl O-(2,3-di-O-benzoyl-4,6-O-[(R)-1-(methoxycarbonyl) ethylidene]-beta-D-galactopyranosyl)-(1-->3)-2-O-benzoyl-4,6-O-[(S)-1- (methoxycarbonyl)ethylidene]-alpha-D-glucopyranoside (13), related to a Rhizobium exopoly
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7316ef3aee5bcf876f604d2190693f5
https://doi.org/10.1016/s0008-6215(05)80010-2
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4
Synthesis of 5-aminopentyl 4,6-O-[(R)-1-carboxyethylidene]-β-d-galactopyranoside and its use as a ligand for the affinity chromatography of human serum amyloid P protein
Autor: Helmut Herzog, Jochen Strayle, Elisabeth Eckhardt, Thomas Ziegler
Publikováno v: Carbohydrate Research. 253:167-183
A series of 2,3-di-O-benzoyl-D-galactopyranosides, alpha-allyl (5), alpha-benzyl (6), beta-ethyl-1-thio (7), beta-phenyl-1-thio (8), and alpha-methyl (9),were prepared from the corresponding 4,6-O-benzylidene derivatives and were acetalated in aceton
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fa7a9b7b773f716a0514f6bcf8f01e3
https://doi.org/10.1016/0008-6215(94)80063-4
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5
Regioselective Glycodesilylation of Silylated Glycosides as a Useful Tool for the Preparation of Oligosaccharides
Autor: Elisabeth Eckhardt, Thomas Ziegler, G. Pantkowski
Publikováno v: Journal of Carbohydrate Chemistry. 13:81-109
A series of fully or partially protected alkyl and aryl 4,6-O-(1,1,3,3-tetraisopropyl-1,3-disiloxane-1,3-diyl)-d-glycopyranosides and 1-thio-β-d-glucopyranosides, respectively, were glycosylated by acetylated α-d-glucopyranosyl-, galactopyranosyl-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7568e295712226cf427a1a028055fb4
https://doi.org/10.1080/07328309408009180
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6
Unexpected Formation of 3,6-Anhydrofuranoses by Acid Treatment of Methyl 2,3-Di-O-acyl-D-glycopyranosides
Autor: Elisabeth Eckhardt, Martin S. Vollmer, Sven Oberhoffner, Thomas Ziegler
Publikováno v: Liebigs Annalen der Chemie. 1993:255-260
Treatment of methyl 2,3-di-O-acyl-D-glycopyranosides 1 of glucose and mannose with catalytic amounts of trifluoromethanesulfonic acid afforded the corresponding bis(5-O-acyl-3,6-anhydro-D-glycofuranose) 1,2′:2,1′-dianhydrides 6 in 12–58% yield
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14dd7f3ae712e77b1cd0b59e91034311
https://doi.org/10.1002/jlac.199319930145
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7
Synthetic studies toward pyruvate acetal containing saccharides. Synthesis of the carbohydrate part of the Mycobacterium smegmatis pentasaccharide glycolipid and fragments thereof for the preparation of neoantigens
Autor: Elisabeth Eckhardt, Thomas Ziegler, Veronique Birault
Publikováno v: The Journal of Organic Chemistry. 58:1090-1099
A series of 2,3-di-O-benzoyl-4,6-0- [(S)-l-(methoxycarbonyl)ethylidenel-~-glucopyranosyl donors (8phenylthio 3, bromide 4, a-chloride 5, &fluoride 6, and trichloroacetimidate 7) were prepared from the corresponding a-allyl glucoside 1 via the deallyl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b28b6b30a45505463dfbc6bc44861385
https://doi.org/10.1021/jo00057a021
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9
ChemInform Abstract: Diastereoselective Formation of Pyruvylated Glycosides from Partly Protected Sugars and Methyl Pyruvate
Autor: Elisabeth Eckhardt, Gerhard Herold, Thomas Ziegler
Publikováno v: ChemInform. 23
Various partly protected sugars ( gluco-, manno-, and galactopyranosides ) were acetalized with methyl pyruvate in moderate to good yield with BF 3 -etherate as the condensing reagent. Thus, (1-methoxycarbonyl)ethylidene glycosides were obtained dias
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f5746159c60f82fa2116ad7894af1c7
https://doi.org/10.1002/chin.199252268
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