42926-89-6Relevant articles and documents
Method for synthesizing release type xylose ester perfume for tobacco perfuming
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, (2021/10/27)
A synthesis method of a release type xylose ester spice for flavoring tobacco is provided. The glucose is used as a raw material, the principle of esterifying carboxylic acid and alcohol to prepare ester is adopted, a common parent carboxylic acid which c
PURE HEPTASULFATED DISACCHARIDES HAVING IMPROVED ORAL BIOAVAILABILITY
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, (2018/03/09)
Hypersulfated disaccharides with utility in asthma or asthma related disorders are disclosed. The heptasulfated disaccharides administered orally have comparable bioavailability to the intravenous administered dosage form.
METHOD FOR PREPARING 3-O-BENZYL-1,2-O-ISOPROPYLIDENE-A-L-FURAN IDOSE
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Paragraph 0040; 0041, (2015/03/16)
Provided is a method for preparing 3-O-benzyl-1,2-O-isopropylidene-α-L-idofuranose, which comprises: (1) protecting hydroxyl of 3-O-benzyl-1,2-O-isopropylidene-α-D-glucofuranose (III) by benzoyl and methylsulfonyl to obtain 6-O-benzoyl-3-O-benzyl-1,2-O-is
METHOD FOR PREPARING 3-O-BENZYL-1,2-O-ISOPROPYLIDENE- -L-FURAN IDOSE
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Paragraph 0028; 0029, (2015/01/18)
Provided is a method for preparing 3-O-benzyl-1,2-O-isopropylidene-α-L-idofuranose, which comprises: (1) protecting hydroxyl of 3-O-benzyl-1,2-O-isopropylidene-α-D-glucofuranose (III) by benzoyl and methylsulfonyl to obtain 6-O-benzoyl-3-O-benzyl-1,2-O-is
Synthesis of carbohydrate fused chiral macrocyclic benzolactones through Sonogashira reaction
Hussain, Altaf,Rao L, Mallikharjuna,Sharma, Deepak K.,Tripathi, Anil K.,Singh, Baldev,Mukherjee, Debaraj
, p. 19899 - 19904 (2013/11/06)
Synthesis of 10-, 11- and 12-membered chiral benzolactones fused to furanose/pyranose sugars has been achieved in good to excellent yields using an intramolecular Sonogashira reaction. Positions 1-2, 3-5, 3-6 and 5-6 of sugar were utilized for the constru
Environment friendly chemoselective deprotection of acetonides and cleavage of acetals and ketals in aqueous medium without using any catalyst or organic solvent
Mukherjee,Sengupta,Roy
, p. 1493 - 1496 (2014/04/03)
Highly chemoselective environment friendly deprotection of acetonides and cleavage of acetals and ketones has been achieved by heating in aqueous medium without using any catalyst and organic solvent. Indian Academy of Sciences.
Design and synthesis of carbohydrate based medium sized sulfur containing benzannulated macrocycles: Applications of Sonogashira and Heck coupling
Hussain, Altaf,Yousuf, Syed Khalid,Sharma, Deepak K.,Mallikharjuna Rao,Singh, Baldev,Mukherjee, Debaraj
supporting information, p. 5517 - 5524 (2013/07/05)
Palladium catalyzed intramolecular Sonogashira and Heck coupling reactions have been applied for diversity-oriented synthesis of sulfur containing carbohydrate based medium sized ring macrocycles. The process involves design and synthesis of building bloc
Useful methods for the synthesis of isopropylidenes and their chemoselective cleavage
Vanlaldinpuia, Khiangte,Bez, Ghanashyam
supporting information; experimental part, p. 3759 - 3764 (2011/08/06)
A catalytic amount of phosphotungstic acid (PTA) has been found to be a very effective catalyst for isopropylidenation of 1,2-diols and their deprotection at room temperature. The ease of handling, cost and activity of the catalyst, good to excellent yields and chemoselectivity for deprotection are some of the highlights of the reported method.
Novel formal synthesis of stereospecifically C-6 deuterated d-glucose employing configurationally stable alkoxymethyllithiums
Kapeller, Dagmar C.,Hammerschmidt, Friedrich
experimental part, p. 591 - 598 (2010/09/05)
The synthesis and testing of configurational stability of chirally monodeuterated PMB- and THP-substituted oxymethyllithiums are described. Macroscopically they are configurationally stable up to -35 °C, the limit of their chemical stability, and microscopically even up to 0 °C. Furthermore, THP-protected oxy-[D1]methyllithium has been applied in the formal synthesis of (6R)-[6-D1]-d-glucose (four steps, 40% yield), an example of its use as a homochiral hydroxymethyl synthon.
Syntheses of β-D-GalpNAc4SO3-(1→4)-L-IdopA2SO3, a disaccharide fragment of dermatan sulfate, and of its methyl α-L-glycoside derivative
Barroca, Nadine,Jacquinet, Jean-Claude
, p. 667 - 679 (2007/10/03)
The syntheses of sodium (sodium 2-acetamido-2-deoxy-4-O-sulfonato-β-D-galactopyranosyl)-(1→4)-(sodium 2-O-sulfonato-L-idopyran)uronate, a disaccharide fragment of dermatan sulfate, and of its methyl α-L-glycoside derivative are reported for the first time. The use of 4-O-acetyl-3,6-di-O-benzyl-2-deoxy-2-trichloroacetamido-1-O-trichloroaceti midoyl-α-D-galactopyranose, readily prepared from a D-gluco precursor, allowed the stereocontrolled and high yielding coupling with the low reactive 4-hydroxyl group of L-iduronic acid ester derivatives. Classical transformation of the disaccharide products into the target molecules was achieved in high yield. (C) 2000 Elsevier Science Ltd.