Výsledky vyhledávání - "Amparo López-Castro"

A short and highly stereoselective route to polyhydroxy-perhydroazaazulenes via a C-(d-galacto-pentopyranos-5-yl)isoxazolidine

Autor: Manuel Gómez-Guillén, Simeón Pérez-Garrido, Francisca Cabrera-Escribano, M. D. Estrada, Manuel Angulo-Álvarez, Pastora Borrachero, Ma Jesús Diánez, Ma Isabel Torres-Sánchez, Amparo López-Castro

Publikováno v: Tetrahedron: Asymmetry. 16:3897-3907

A short and efficient route to enantiomerically pure hexahydroxy- and pentahydroxy-perhydroazaazulenes, ring-homologues of castanospermine, starting from the sole isoxazolidine derivative obtained in the 1,3-dipolar cycloaddition of a d -galactose-de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f09853e9488edb89f2bd8c4492862c7f
https://doi.org/10.1016/j.tetasy.2005.10.023

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Synthesis of 4-C-sulfoaminosugar derivatives: isomerization of 4-C-sulfogalactosamine to its gluco epimer

Autor: José G. Fernández-Bolaños, Amparo López-Castro, Jose Maria Fernández-Bolaños, Simeón Pérez-Garrido, Ma Jesús Diánez, Salud García, M. D. Estrada

Publikováno v: Tetrahedron: Asymmetry. 14:3761-3768

Methyl 2-benzamido-3,6-di- O -benzoyl-2,4-dideoxy-α- d -glucopyranoside-4- C -sulfonate sodium salt 9 and its galacto epimer 10 were prepared by oxidation with hydrogen peroxide in acetic acid of methyl 4- S -acetyl-2-benzamido-3,6-di- O -benzoyl-2-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3fbc290206c5e7c085a4fb2d1087d339
https://doi.org/10.1016/j.tetasy.2003.10.004

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Synthesis of new C-sulfosugars and C-sulfoalditols: Amadori rearrangement of 6-C-sulfo-d-fucose

Autor: José G. Fernández-Bolaños, Ma Jesús Diánez, José Fuentes, Amparo López-Castro, Victor Ulgar, Simeón Pérez-Garrido, M. D. Estrada, Inés Maya

Publikováno v: Tetrahedron: Asymmetry. 14:1009-1018

The novel 6-deoxy-6-C-sulfo- d -galactose (6-sulfofucose) potassium salt was prepared by oxidation of 1,2,3-tri-O-acetyl-6-S-acetyl-4-O-benzoyl-6-deoxy-α- d -galactopyranose with hydrogen peroxide and potassium acetate in acetic acid. Its cyclohexyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::87b6e9c86cd304dd76507a67e25b8b30
https://doi.org/10.1016/s0957-4166(03)00160-5

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Higher glycosamino acid precursors: C7 and C8 aminodialdoses via regio- and stereoselective [3+2] cycloaddition of vinyl trimethylsilane to C-glycosyl nitrones

Autor: Ma Isabel Torres, Francisca Cabrera-Escribano, Amparo López Castro, Simeón Pérez-Garrido, Pastora Borrachero, Ma Jesús Diánez, Manuel Gómez-Guillén, M. D. Estrada

Publikováno v: Tetrahedron: Asymmetry. 13:2025-2038

Protected C7 and C8 aminodialdoses were prepared stereoselectively from readily available C5 and C6 monosaccharide N-benzyl nitrones, by regio- and diastereoselective 1,3-dipolar cycloaddition reactions with vinyl trimethylsilane, followed by acetyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4535a03945a05f7eb539c1e950e1f060
https://doi.org/10.1016/s0957-4166(02)00543-8

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Towards cyclic, conformationally constrained, fluorine-containing β-amino acid derivatives from d-glucose

Autor: M. D. Estrada, Francisca Cabrera-Escribano, Yolanda Vera-Ayoso, Manuel Gómez-Guillén, Pastora Borrachero, Simeón Pérez-Garrido, Amparo López-Castro, Ma Jesús Diánez

Publikováno v: Tetrahedron: Asymmetry. 12:2031-2041

Novel, potentially bioactive, fluorinated branched-chain monosaccharides were obtained by reaction of diethylaminosulphur trifluoride (DAST) with a series of methyl 3-C-cyano-3-ethoxycarbonyl-β- d -glucopyranoside derivatives, including the 4,6-O-be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6f406c12e591a98c7c1f85a905e277f
https://doi.org/10.1016/s0957-4166(01)00354-8

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Study of a diastereoisomeric dihydrothiophene derivative at 150K

Autor: Amparo López-Castro, Simeón Pérez-Garrido, María Dolores Estrada, M. J. Diánez

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 55:1020-1023

The crystal and molecular structure of (4R, 5R)-4-(1', 2', 3', 4', 5'-penta-O-acetyl-D-manno-pentitol-1-yl)-5-[N-(4-methoxyphenyl)carbamoyl]-2-(N-methyl-benzylamino)-3-nitro-5-phenyl-4,5-dihydrothiophene {IUPAC name: 1-(2R,3R)-5-(N-benzyl-N-methylami

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::979461fb44e3d3741905f8abd61891f0
https://doi.org/10.1107/s010827019900102x

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Branched-chain fluoro nitro d- and l-sugars from glucose

Autor: Pastora Borrachero, Manuel Gómez-Guillén, Francisca Cabrera-Escribano, Rafael Ojeda, Ana T. Carmona, Ma Jesús Diánez, Amparo López-Castro, M. D. Estrada, Simeón Pérez-Garrido

Publikováno v: Tetrahedron: Asymmetry. 10:1751-1764

Mixed crystals of methyl 3-deoxy-3- C -methyl-3-nitro-α- d - and β- l -glucopyranosides (1:1), easily available from d -glucose by means of the Baer reaction, were completely characterised by X-ray diffraction analysis. These diastereomeric compone

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ba36edf6e63ab715834f66b72fd73d5
https://doi.org/10.1016/s0957-4166(99)00156-1

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Regio- and stereoselective synthesis of 3- and 5-(C-glycosyl)-4-nitroisoxazolidines by nitrone–nitroalkene [3+2] cycloaddition reactions

Autor: José L. de Paz, Manuel Gómez-Guillén, Simeón Pérez-Garrido, M. D. Estrada, Francisca Cabrera, Amparo López-Castro, Pastora Borrachero, J. M. Moreno, Ma Jesús Diánez

Publikováno v: Tetrahedron: Asymmetry. 10:77-98

Cycloaddition reactions of nitrones, including sugar nitrones, with nitroalkenes, including sugar nitroolefins, led with complete regioselectivity and stereospecificity to 4,5- trans -4-nitroisoxazolidines in 51–78% global yields. The endo/exo ster

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6cde80f7e355b28bb395479ffc36248e
https://doi.org/10.1016/s0957-4166(98)00488-1

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Sulfoaminoglucitols: synthesis of 2-amino-2,3 (and 2,6)-dideoxy-d-glucitol-3 (and 6)-sulfonic acids and X-ray crystal structure of the monohydrate of the 6-sulfo derivative

Autor: Ma Jesús Diánez, Salud García, Amparo López-Castro, José G. Fernández-Bolaños, Simeón Pérez, JoséG. Fernández-Bolaños, María Dolores Estrada

Publikováno v: Carbohydrate Research. 282:137-147

2-Amino-2,3-dideoxy- d -glucitol-3-sulfonic acid (3) and 2-amino-2,6-dideoxy- d -glucitol-6-sulfonic acid (4) were prepared by reduction of 2-amino-2,3 (and 2,6)-dideoxy- d -glucopyranose-3 (and 6)-sulfonic acids with sodium borohydride. The crystal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f8693c1d223b54707af2b3b50923db7
https://doi.org/10.1016/0008-6215(95)00369-x

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