Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase
- Autores
- Manzano, Veronica Elena; Uhrig, Maria Laura; Varela, Oscar Jose
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The ring-opening reaction of sugar 3,4-epoxides by 2,3,4,6-tetra-O-acetyl- 1-thio-β-d-galactopyranose (7) as a nucleophile led to (1 → 3)- and (1 → 4)-thiodisaccharides. High regio- and diastereoselectivities were achieved in the synthesis of the per-O-acetyl derivative of the β-d-Galp-S-(1 → 4)-4-thio-α-d-Glcp-O-iPr (10). Analogues of the 4-thiolactoside 10 have been prepared, with the β-d-Galp non-reducing end S-linked to d-Glcp, d-Gulp and d-Idop. A similar regioselective attack of 7 on C-4 of 2-propyl 3,6-di-O-acetyl-3,4-epithio-α-d-galactopyranoside (6) led to 2-propyl 3,4-dithiolactoside derivative 15. During this reaction the free 3-SH group of 15 underwent oxidative dimerization or oxidative coupling with the SH function of 7 to give the respective disulfides. Glycosylation of the thiol group of 15 using trichloroacetimidate derivatives of β-d-Galp or β-d-Galf afforded the corresponding branched dithiotrisaccharides. The free compounds were evaluated as inhibitors of the E. coli β-galactoside. The bis(2-propyl 3,4-dithiolactosid-3-yl)-disulfide, obtained from 15, displayed the strongest inhibitory activity in these series of glycomimetics and proved to be a non-competitive inhibitor (Ki = 95 μM).
Fil: Manzano, Veronica Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina
Fil: Uhrig, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina
Fil: Varela, Oscar Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina - Materia
-
4-Thiolactose
3,4-Dithiolactose
Glycomimetics
Beta-Galactosidase - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/68219
Ver los metadatos del registro completo
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3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidaseManzano, Veronica ElenaUhrig, Maria LauraVarela, Oscar Jose4-Thiolactose3,4-DithiolactoseGlycomimeticsBeta-Galactosidasehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The ring-opening reaction of sugar 3,4-epoxides by 2,3,4,6-tetra-O-acetyl- 1-thio-β-d-galactopyranose (7) as a nucleophile led to (1 → 3)- and (1 → 4)-thiodisaccharides. High regio- and diastereoselectivities were achieved in the synthesis of the per-O-acetyl derivative of the β-d-Galp-S-(1 → 4)-4-thio-α-d-Glcp-O-iPr (10). Analogues of the 4-thiolactoside 10 have been prepared, with the β-d-Galp non-reducing end S-linked to d-Glcp, d-Gulp and d-Idop. A similar regioselective attack of 7 on C-4 of 2-propyl 3,6-di-O-acetyl-3,4-epithio-α-d-galactopyranoside (6) led to 2-propyl 3,4-dithiolactoside derivative 15. During this reaction the free 3-SH group of 15 underwent oxidative dimerization or oxidative coupling with the SH function of 7 to give the respective disulfides. Glycosylation of the thiol group of 15 using trichloroacetimidate derivatives of β-d-Galp or β-d-Galf afforded the corresponding branched dithiotrisaccharides. The free compounds were evaluated as inhibitors of the E. coli β-galactoside. The bis(2-propyl 3,4-dithiolactosid-3-yl)-disulfide, obtained from 15, displayed the strongest inhibitory activity in these series of glycomimetics and proved to be a non-competitive inhibitor (Ki = 95 μM).Fil: Manzano, Veronica Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; ArgentinaFil: Uhrig, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; ArgentinaFil: Varela, Oscar Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; ArgentinaRoyal Society of Chemistry2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68219Manzano, Veronica Elena; Uhrig, Maria Laura; Varela, Oscar Jose; Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase; Royal Society of Chemistry; Organic & Biomolecular Chemistry; 10; 44; 11-2012; 8884-88941477-0520CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c2ob26388binfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/Content/ArticleLanding/2012/OB/c2ob26388binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:43Zoai:ri.conicet.gov.ar:11336/68219instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:20:43.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
title |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
spellingShingle |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase Manzano, Veronica Elena 4-Thiolactose 3,4-Dithiolactose Glycomimetics Beta-Galactosidase |
title_short |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
title_full |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
title_fullStr |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
title_full_unstemmed |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
title_sort |
Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase |
dc.creator.none.fl_str_mv |
Manzano, Veronica Elena Uhrig, Maria Laura Varela, Oscar Jose |
author |
Manzano, Veronica Elena |
author_facet |
Manzano, Veronica Elena Uhrig, Maria Laura Varela, Oscar Jose |
author_role |
author |
author2 |
Uhrig, Maria Laura Varela, Oscar Jose |
author2_role |
author author |
dc.subject.none.fl_str_mv |
4-Thiolactose 3,4-Dithiolactose Glycomimetics Beta-Galactosidase |
topic |
4-Thiolactose 3,4-Dithiolactose Glycomimetics Beta-Galactosidase |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The ring-opening reaction of sugar 3,4-epoxides by 2,3,4,6-tetra-O-acetyl- 1-thio-β-d-galactopyranose (7) as a nucleophile led to (1 → 3)- and (1 → 4)-thiodisaccharides. High regio- and diastereoselectivities were achieved in the synthesis of the per-O-acetyl derivative of the β-d-Galp-S-(1 → 4)-4-thio-α-d-Glcp-O-iPr (10). Analogues of the 4-thiolactoside 10 have been prepared, with the β-d-Galp non-reducing end S-linked to d-Glcp, d-Gulp and d-Idop. A similar regioselective attack of 7 on C-4 of 2-propyl 3,6-di-O-acetyl-3,4-epithio-α-d-galactopyranoside (6) led to 2-propyl 3,4-dithiolactoside derivative 15. During this reaction the free 3-SH group of 15 underwent oxidative dimerization or oxidative coupling with the SH function of 7 to give the respective disulfides. Glycosylation of the thiol group of 15 using trichloroacetimidate derivatives of β-d-Galp or β-d-Galf afforded the corresponding branched dithiotrisaccharides. The free compounds were evaluated as inhibitors of the E. coli β-galactoside. The bis(2-propyl 3,4-dithiolactosid-3-yl)-disulfide, obtained from 15, displayed the strongest inhibitory activity in these series of glycomimetics and proved to be a non-competitive inhibitor (Ki = 95 μM). Fil: Manzano, Veronica Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina Fil: Uhrig, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina Fil: Varela, Oscar Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina |
description |
The ring-opening reaction of sugar 3,4-epoxides by 2,3,4,6-tetra-O-acetyl- 1-thio-β-d-galactopyranose (7) as a nucleophile led to (1 → 3)- and (1 → 4)-thiodisaccharides. High regio- and diastereoselectivities were achieved in the synthesis of the per-O-acetyl derivative of the β-d-Galp-S-(1 → 4)-4-thio-α-d-Glcp-O-iPr (10). Analogues of the 4-thiolactoside 10 have been prepared, with the β-d-Galp non-reducing end S-linked to d-Glcp, d-Gulp and d-Idop. A similar regioselective attack of 7 on C-4 of 2-propyl 3,6-di-O-acetyl-3,4-epithio-α-d-galactopyranoside (6) led to 2-propyl 3,4-dithiolactoside derivative 15. During this reaction the free 3-SH group of 15 underwent oxidative dimerization or oxidative coupling with the SH function of 7 to give the respective disulfides. Glycosylation of the thiol group of 15 using trichloroacetimidate derivatives of β-d-Galp or β-d-Galf afforded the corresponding branched dithiotrisaccharides. The free compounds were evaluated as inhibitors of the E. coli β-galactoside. The bis(2-propyl 3,4-dithiolactosid-3-yl)-disulfide, obtained from 15, displayed the strongest inhibitory activity in these series of glycomimetics and proved to be a non-competitive inhibitor (Ki = 95 μM). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-11 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/68219 Manzano, Veronica Elena; Uhrig, Maria Laura; Varela, Oscar Jose; Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase; Royal Society of Chemistry; Organic & Biomolecular Chemistry; 10; 44; 11-2012; 8884-8894 1477-0520 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/68219 |
identifier_str_mv |
Manzano, Veronica Elena; Uhrig, Maria Laura; Varela, Oscar Jose; Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase; Royal Society of Chemistry; Organic & Biomolecular Chemistry; 10; 44; 11-2012; 8884-8894 1477-0520 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1039/c2ob26388b info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/Content/ArticleLanding/2012/OB/c2ob26388b |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Royal Society of Chemistry |
publisher.none.fl_str_mv |
Royal Society of Chemistry |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614190091730944 |
score |
13.070432 |