Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Wojciech, Karpiesiuk"'
Autor:
Wojciech Karpiesiuk, Anna Banaszek
Publikováno v:
Carbohydrate Research. 299:245-252
The synthesis of the title compounds is described, i.e. coupling of the ylide, generated from the iodophosphonium salt of protected N-phthaloyl-D-galactosamine with 2,3-O-isopropylidene D-ribo-aldehyde afforded an undecose in high yield. Hydroboratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f9d8a1b8eb654e9e0ad7452966a0583
https://doi.org/10.1016/s0008-6215(97)00018-9
https://doi.org/10.1016/s0008-6215(97)00018-9
Publikováno v:
Carbohydrate Research. 257:25-33
The structures of the title compounds 2b and 3) have been investigated in the solid state by X-ray methods. The crystals of 2b are monoclinic, space group P21, and of 3 orthorhombic, space group P212121. The cell dimensions are: for 2b, a = 9.910(2),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1371ad66a6e97d7d56ecee8d4c93431
https://doi.org/10.1016/0008-6215(94)84105-5
https://doi.org/10.1016/0008-6215(94)84105-5
Autor:
Anna Banaszek, Wojciech Karpiesiuk
Publikováno v:
Tetrahedron. 50:2965-2974
A five-step synthesis of deaminotunicaminyluracil is presented. Coupling of the ylide, generated from the phosphonium salt 4, with the aldehyde 5 afforded the undecose 6 in high yield. The key step in this synthesis was the hydroboration-oxidation re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa872d3772671e3107ee74bdb43b34dc
https://doi.org/10.1016/s0040-4020(01)87008-3
https://doi.org/10.1016/s0040-4020(01)87008-3
Autor:
Anna Banaszek, Wojciech Karpiesiuk
Publikováno v:
Carbohydrate Research. 251:233-242
Reduction of the title compounds of types 1 and 2 under mild conditions using LiBH 4 -Me 3 SiCl species, followed by acetylation, yielded the corresponding 2-amino sugars of α- d - gluco ( 5 ) and β- d - manno ( 6 ) configuration, respectively, wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4e0e3bba4e2ad9dc1f3aa933dc409a
https://doi.org/10.1016/0008-6215(94)84288-4
https://doi.org/10.1016/0008-6215(94)84288-4
Autor:
Wojciech Karpiesiuk, Anna Banaszek
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 4:879-882
The title compound 9 was synthesized by Wittig reaction of phosphonium salt 6 with aldehyde 7 to afford Z-olefin 8 , with subsequent following hydration via a hydroboration-oxidation process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07e184f3c5a7923d6113d5e8c3effb61
https://doi.org/10.1016/s0960-894x(01)80255-9
https://doi.org/10.1016/s0960-894x(01)80255-9
Autor:
Anna Banaszek, Wojciech Karpiesiuk
Publikováno v:
ChemInform. 25
A five-step synthesis of deaminotunicaminyluracil is presented. Coupling of the ylide, generated from the phosphonium salt 4, with the aldehyde 5 afforded the undecose 6 in high yield. The key step in this synthesis was the hydroboration-oxidation re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fa01407011b69cde24a4ff6dde23e48
https://doi.org/10.1002/chin.199427261
https://doi.org/10.1002/chin.199427261
Autor:
Wojciech Karpiesiuk, Anna Banaszek
Publikováno v:
ChemInform. 25
Reduction of the title compounds of types 1 and 2 under mild conditions using LiBH 4 -Me 3 SiCl species, followed by acetylation, yielded the corresponding 2-amino sugars of α- d - gluco ( 5 ) and β- d - manno ( 6 ) configuration, respectively, wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7774e08fb8bc650d2238cb5dff6f5c10
https://doi.org/10.1002/chin.199420265
https://doi.org/10.1002/chin.199420265
Autor:
Anna Banaszek, Wojciech Karpiesiuk
Publikováno v:
ChemInform. 26
3,4,6-Tri- O -benzoyl-2-(benzoyloxyimino)-2-deoxy-α- d - arabino -hexopyranosyl bromide ( 2 ) reacts with the O -protected 2-deoxy-2-phthalimido-β- d -galactosamines 3 and 4 in the presence of silver triflate and sym -collidine at −78°C, to give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f85072edb48d791b7560d7806be6edf1
https://doi.org/10.1002/chin.199502157
https://doi.org/10.1002/chin.199502157
Autor:
Wojciech Karpiesiuk, Anna Banaszek
Publikováno v:
ChemInform. 28
The synthesis of the title compounds is described, i.e. coupling of the ylide, generated from the iodophosphonium salt of protected N-phthaloyl-D-galactosamine with 2,3-O-isopropylidene D-ribo-aldehyde afforded an undecose in high yield. Hydroboratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65ba6a66dcd3ea97a4cff870eafcb2c8
https://doi.org/10.1002/chin.199734249
https://doi.org/10.1002/chin.199734249
Autor:
Anna Banaszek, Wojciech Karpiesiuk
Publikováno v:
Journal of Carbohydrate Chemistry. 9:909-914
Among the known non-symmetrical naturally occurring aminotrehaloses possessing antimicrobial activity, the stereoselective synthesis of α, α-linked D-glucosaminyl-D-glucoside as well as of D-glucosaminyl-D-mannoside has been reported.1 In contrast,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8c96ff99b431d7e7ffc2a62d9fb12db
https://doi.org/10.1080/07328309008543884
https://doi.org/10.1080/07328309008543884