116013-34-4Relevant academic research and scientific papers
Linearization of carbohydrate derived polycyclic frameworks
Singh, Priyanka,Panda, Gautam
, p. 31892 - 31903 (2014/08/18)
We report easy access to carbohydrate derived diverse tricyclic skeletons which could be beneficial for exploring polyfunctionalized chiral alicycles. The key reaction to assemble a sugar fused tricyclic core is intermolecular tandem esterification and 1,3-dipolar cycloaddition. The framework was elaborated using amide forming reactions, opening of isoxazolidine rings followed by N and O-acylations. The sequences provide distinct, spatially separated and encoded chemical entities that may pave the way to investigate cell functions.
Nafion-H mediated selective deprotection of terminal isopropylidene acetals and trityl ethers. Application in the synthesis of a substituted piperidone
Rawal, Girish K.,Rani, Shikha,Kumar, Amit,Vankar, Yashwant D.
, p. 9117 - 9120 (2007/10/03)
A facile chemoselective hydrolysis of terminal isopropylidene acetals has been achieved in good to excellent yields within 2-4 h using Nafion-H in methanol at ambient temperature. This procedure has been employed to synthesize a substituted piperidone der
Selective deprotection of terminal isopropylidene acetals and trityl ethers using HClO4 supported on silica gel
Agarwal, Aditi,Vankar, Yashwant D.
, p. 1661 - 1667 (2007/10/03)
Terminal isopropylidene acetals are selectively cleaved to the corresponding 1,2-diols in good to excellent yields in 6-24 h at room temperature by using the 'HClO4?SiO2' reagent system. Likewise, trityl ethers are readily cleaved to the corresponding alcohols in good to excellent yields within 2-3 h at room temperature. Work-up involves merely filtration of the reagent followed by purification of the crude product.
NUCLEOPHILIC SUBSTITUTION VERSUS RADICAL REACTION FOR CARBOHYDRATES DEOXYGENATION: APPLICATION AT C-4 OF METHYL-α-D-GLUCOPYRANOSIDE DERIVATIVES
Czernecki, Stanislas,Horns, Stefan,Valery, Jean-Marc
, p. 157 - 164 (2007/10/02)
Two methods for deoxygenation at C-4 of methyl 2,3-di-O-benzyl-α-D-glucopyranoside are reported.The first one involves nucleophilic displacement of a secondary methane sulfonate by lithium triethylborohydride to afford methyl 2,3-di-O-benzyl-4-deoxy-α-D-x
Specificity of α- and β-D-galactosidase towards analogs of D-galactopyranosides modified at C-4 or C-5
Nam Shin, Jeong E.,Maradufu, Asafu,Marion, Jean,Perlin, Arthur S.
, p. 328 - 335 (2007/10/02)
In examining the stereochemistry of D-galactose oxidase, it was found that some 4-deoxy analogs of methyl β-D-galactopyranoside (1), particularly the 4-amino (2) and 4-fluoro (3) derivatives, are relatively good substrates of the enzyme.The same compounds
