Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Hartmut Redlich"'
Publikováno v:
Journal of Carbohydrate Chemistry. 27:10-31
A convenient method for the syntheses of non‐1‐ynitols 8a–8d, by chemoselective addition of (trimethylsilyl)‐propargylmagnesium bromide at the anomeric center of a 1‐unprotected sugar, in the presence of 3‐C′‐halide and 3‐C′‐sil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85afe0c969f0f151e88f1aa1f6ef9506
https://doi.org/10.1080/07328300801991278
https://doi.org/10.1080/07328300801991278
Publikováno v:
Tetrahedron Letters. 48:8145-8148
2-Deoxystreptamine derivatives with all-axial substituents were prepared with new methods. They are potential compounds for desymmetrization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef6b3360874723f2cc7d6eec4bef8394
https://doi.org/10.1016/j.tetlet.2007.09.102
https://doi.org/10.1016/j.tetlet.2007.09.102
Publikováno v:
Journal of Carbohydrate Chemistry. 26:279-303
d‐glucosamine propane‐1,3‐diyl dithioacetal is a versatile synthetic building block, especially when being incorporated with the Corey‐Seebach method. Hence, exploring compatible protecting group patterns on this compound mainly for use with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb002620982758b19f507aea340568ed
https://doi.org/10.1080/07328300701540183
https://doi.org/10.1080/07328300701540183
Publikováno v:
Synthesis. 2006:4212-4218
While 3,4;5,6-di-O-isopropylidene-N-phthaloyl-d-glucosamine propane-1,3-diyl dithioacetal (2) underwent fast β-elimination, the corresponding N-acetyl derivative 3 was easily deprotonated with butyllithium to form the dilithiated intermediate 7, whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b672ef0b3f044256b81e7112ac675228
https://doi.org/10.1055/s-2006-950359
https://doi.org/10.1055/s-2006-950359
Publikováno v:
Synthesis. 2006:2242-2250
Versatile 3,4,5-tri-O-protected 2-acylamino-2-deoxy-6-O-tosyl-D-glucose propane-1,3-diyl dithioacetal intermediates were efficiently synthesized from D-glucosamine propane-1,3-diyl dithioacetal or its derivatives. Intramolecular cyclizations from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a98587bceaf654739bc20ac88da6610
https://doi.org/10.1055/s-2006-942430
https://doi.org/10.1055/s-2006-942430
Publikováno v:
Tetrahedron: Asymmetry. 16:3848-3852
The basic reagent vinyloxyethoxy titanium trisisopropyloxide, easily modified by replacing two of the isopropyloxides with the optically active diol ( R )- or ( S )-BINOL, reacts with simple, prochiral aldehydes to give chiral β-hydroxy-1,3-dioxolan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::645b2f0e9667f0ffccceaa77342900c8
https://doi.org/10.1016/j.tetasy.2005.10.001
https://doi.org/10.1016/j.tetasy.2005.10.001
Publikováno v:
Cellulose. 12:317-326
This communication reports the detailed procedure for the cleavage of cellulose triacetate (30 g scale) with pivalic anhydride and boron trifluoride etherate in dichloromethane (pivaloylysis). With this mild and efficient method the cellulose oligome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f060209038006ee564ccb55bca838bc
https://doi.org/10.1007/s10570-004-3387-6
https://doi.org/10.1007/s10570-004-3387-6
Autor:
Jutta Pyplo-Schnieders, Jens Müller, Hartmut Redlich, Birgit Meyer zu Berstenhorst, Gerhard Erker, Julia-Christina Wasilke, Gerald Kehr
Publikováno v:
European Journal of Inorganic Chemistry. 2005:92-99
The dimethyltitanocene/B(C6F5)3 system reacts with the 4-unprotected methyl α-D-glucopyranoside derivative 5 (“HO-carb.”) to yield the ionic complex [Cp2Ti(O-carb.)]+[MeB(C6F5)3]− (10a). Spectroscopic studies have led us to believe that 10a is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6169e69e88ec742160d97b609e47189c
https://doi.org/10.1002/ejic.200400387
https://doi.org/10.1002/ejic.200400387
Publikováno v:
Collection of Czechoslovak Chemical Communications. 69:1843-1876
2-Haloethyl 1-thioglycosides are excellent leaving groups when the 2-haloethyl function is activated with silver salts or Lewis acids. These thioglycosides can be synthesized on the original Černý route or for better compatibility with the needs of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a3f3e20620f20b3ffef483ceaa2e1a8
https://doi.org/10.1135/cccc20041843
https://doi.org/10.1135/cccc20041843
Publikováno v:
Cellulose. 10:75-83
Cellulose oligomers obtained by a new degradation method (pivaloylysis) are used as starting materials in organic synthesis. On the one hand these oligomers are functionalized to potent glycosyl donors, on the other hand several methods are shown to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a18b9eada7b33c1150d4e228ed788da3
https://doi.org/10.1023/a:1023075002195
https://doi.org/10.1023/a:1023075002195