Über die Verseifung acetylierter Kohlenhydrate

Zemplén, Geža; Gerecs, Árpád; Hadácsy, Ilona

doi:10.1002/cber.19360690807

Cited by 167 publications

(44 citation statements)

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“…Debenzoylation of (7) and (8) were performed by using methanolic sodium methoxide solution following Zemplen et al's method (Zemplen et al, 1939) to afford the free nucleosides (9) and (10), respectively (Scheme 2).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of the Novel 3-Benzotriazole-5-yl difluoromethyl-5-trifluoromethyl benzotriazole Nucleosides

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2015

IJC

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Triazole ring is a quite important five-membered heterocycle with three nitrogen atoms, possesses aromaticity and is an electron rich system. Triazole derivatives have been frequently becoming clinical drugs or candidates for the treatment of various types of diseases. Synthesis of the novel of 3-Benztriazole-5-yl difluoromethyl-5-trifluoromethyl benztriazole compound (3). Synthesis and chara-cterization of two new benzotriazole nucleosides with good yields by silyation method.

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Section: Resultsmentioning

confidence: 99%

Synthesis of the Novel 3-Benzotriazole-5-yl difluoromethyl-5-trifluoromethyl benzotriazole Nucleosides

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2015

IJC

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“…The solvent was evaporated under vacuum to give a colorless solid, which was dissolved in hot water and neutralized with few drops acetic acid. Purification of each compound by TLC chromatographic on silica gel with chloroform: ethyl acetate (9: 1) to afford colorless and white crystals of the following Zemplen et al's method (Zemplen et al, 1939) to afford the free nucleosides 6.…”

Section: General Proceduresmentioning

confidence: 99%

Synthesis of 8-Trifluloromethyl-2-Thioquinazolin-(3H)-4-One Nucleosides

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2017

IJC

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Synthesis of 8-trifluloromethyl-2-thioquinazolin-(1H,3H)-4-one 2. which have been ribosylated by coupling with 1-O-acetyl-2,3,5-tri-O-benzoyl--D-ribofuranose 4 by using the silylation method, afforded β-anomeric of the benzoylated nucleoside derivatives 5. Debenzoylation of 5 by sodium metal in dry methanol to afford the corresponding free nucleosides 6. The structures of the newly synthesis compounds have been confirmed on the basis of elemental analyses, IR, 1 HNMR, 13CNMR and Mass spectral data.

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“…The hydroxyl group at position 6 of fructose can be selectively deprotection with tert-butylammonium fluoride (TBAF) in tetrahydrofuran (THF) to obtain the partially protected 1',2,3,3',4,4',6-hepta-O-acetyl-6'-sucrose (4) 14 . (6) 16,17 . Coupling of the latter with dodecanoyl chloride and 2-butyloctanoyl chloride via Staudinger reaction in presence of tryphenylphosphine furnished the actylated surfactants 1',2,3,3',4,4',6-hepta-O-acetyl-6'-dodecanamido-sucrose (7a) and 1',2,3,3',4,4',6-hepta-O-acetyl-6'-2-butyl-octanamido-sucrose (8a) respectively [18][19][20] .…”

Section: Synthesismentioning

confidence: 99%

Straight and Branched Sucrose Monoamide Derivatives as New Surfactants

2016

Chem Sci Trans

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Abstract:We have synthesized monoamide analogs of sucrose. The synthesis applied a multi steps synthesis scheme ended by Staudinger reaction based coupling of a sucrose azide with fatty acid chlorides. Sucrose monoamide surfactants are easily accessible surfactants from sucrose, which is consider as the cheapest natural carbohydrate resources. The assembly behavior of synthesized monoamide derivatives was investigated by optical polarizing microscopy, Differential scanning calorimetry DSC and surface tension studies. These surfactants exhibit very good solubility in water at room temperature and value of CMC within the range of disaccharides surfactants, which make those surfactants fitting the target application as water-in-oil emulsions.

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Über die Verseifung acetylierter Kohlenhydrate

Cited by 167 publications

References 1 publication

Synthesis of the Novel 3-Benzotriazole-5-yl difluoromethyl-5-trifluoromethyl benzotriazole Nucleosides

Synthesis of the Novel 3-Benzotriazole-5-yl difluoromethyl-5-trifluoromethyl benzotriazole Nucleosides

Synthesis of 8-Trifluloromethyl-2-Thioquinazolin-(3H)-4-One Nucleosides

Straight and Branched Sucrose Monoamide Derivatives as New Surfactants

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