Acid-catalyzed isomerization of methyl 2-deoxy- d- arabino-hexosides: equilibria, kinetics and mechanism
Four isomers of methyl 2-deoxy- d- arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (α p and β p ) at 40 °C and of furanoside isomerization (α f and β f ) at 26 °C were determined. A mechanism has been suggested for transform...
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Published in | Carbohydrate research Vol. 337; no. 3; pp. 265 - 272 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
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11.02.2002
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Abstract | Four isomers of methyl 2-deoxy-
d-
arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (α
p
and β
p
) at 40
°C and of furanoside isomerization (α
f
and β
f
) at 26
°C were determined. A mechanism has been suggested for transformations taking place during isomerization of methyl 2-deoxy-
d-
arabino-hexosides in methanolic solution catalyzed with hydrogen chloride.
Four isomers of methyl 2-deoxy-
d-
arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (α
p
and β
p
) at 40
°C and of furanoside isomerization (α
f
and β
f
) at 26
°C were determined. A mechanism has been suggested for transformations taking place during isomerization of methyl 2-deoxy-
d-
arabino-hexosides in methanolic solution catalyzed with hydrogen chloride. |
---|---|
AbstractList | Four isomers of methyl 2-deoxy-D-arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (alpha(p) and beta(p)) at 40 degrees C and of furanoside isomerization (alpha(f) and beta(f)) at 26 degrees C were determined. A mechanism has been suggested for transformations taking place during isomerization of methyl 2-deoxy-D-arabino-hexosides in methanolic solution catalyzed with hydrogen chloride. Four isomers of methyl 2-deoxy- d- arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (α p and β p ) at 40 °C and of furanoside isomerization (α f and β f ) at 26 °C were determined. A mechanism has been suggested for transformations taking place during isomerization of methyl 2-deoxy- d- arabino-hexosides in methanolic solution catalyzed with hydrogen chloride. Four isomers of methyl 2-deoxy- d- arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization (α p and β p ) at 40 °C and of furanoside isomerization (α f and β f ) at 26 °C were determined. A mechanism has been suggested for transformations taking place during isomerization of methyl 2-deoxy- d- arabino-hexosides in methanolic solution catalyzed with hydrogen chloride. |
Author | Kasprzykowska, Regina Wiśniewski, Andrzej Smiataczowa, Kazimiera Dmochowska, Barbara Nowacki, Andrzej |
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CitedBy_id | crossref_primary_10_1080_07328303_2021_2015365 crossref_primary_10_1016_j_carres_2009_02_031 crossref_primary_10_1016_j_carres_2009_06_004 crossref_primary_10_1039_B710676A crossref_primary_10_1016_S0040_4039_02_02280_3 |
Cites_doi | 10.1002/cber.19220550122 10.1139/v62-038 10.1002/cber.19230560511 10.1039/JR9490002846 10.1016/S0008-6215(00)84949-6 10.1016/S0096-5332(08)60167-8 10.1080/07328309908543976 10.1039/JR9550004419 10.1016/S0008-6215(00)80059-2 10.1016/S0065-2318(08)60348-0 |
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Keywords | Methyl 2-deoxy- d- arabino-hexosides Anomerization Isomerization Kinetic studies |
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Snippet | Four isomers of methyl 2-deoxy-
d-
arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization... Four isomers of methyl 2-deoxy-D-arabino-hexosides were isolated by HPLC as chromatographically homogeneous compounds. The rates of pyranoside isomerization... |
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StartPage | 265 |
SubjectTerms | Anomerization Arabinose - analogs & derivatives Arabinose - chemistry Catalysis Chromatography, High Pressure Liquid - methods Deoxy Sugars - chemical synthesis Deoxy Sugars - chemistry Hydrochloric Acid - chemistry Isomerism Isomerization Kinetic studies Kinetics Methyl 2-deoxy- d- arabino-hexosides Monosaccharides - chemistry |
Title | Acid-catalyzed isomerization of methyl 2-deoxy- d- arabino-hexosides: equilibria, kinetics and mechanism |
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