65434-49-3Relevant academic research and scientific papers
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.
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.
First synthesis of 5,6-branched galacto-hexasaccharide, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016
Zhang, Guohua,Fu, Mingkun,Ning, Jun
, p. 733 - 738 (2007/10/03)
α-d-Galactopyranosyl-(1→6)-[β-d-galactofuranosyl-(1→5) ]-β-d-galactofuranosyl-(1→6)-β-d-galactofuranosyl-(1→5) -[α-d-galactopyranosyl-(1→6)]-β-d-galactofuranose, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium c
Practical synthesis of [1-13C]- and [6-13C]-D-galactose
Sato, Ken-Ichi,Akai, Shoji,Sakuma, Mayumi,Kojima, Masaru,Suzuki, Ken-Ju
, p. 4903 - 4907 (2007/10/03)
The chemical synthesis of 13C-labeled D-galactose as useful molecular probes for studying the conformation of oligosaccharides attached to proteins was performed. The method for synthesizing the title labeled compounds was newly developed via t
A Simple and Facile Chemo- and Regioselective Deprotection of Acetonides Using Silica Supported Sodium Hydrogen Sulfate as a Heterogeneous Catalyst
Mahender,Ramu,Ramesh,Das, Biswanath
, p. 734 - 735 (2007/10/03)
Silica supported sodium hydrogen sulfate (NaHSO4·SiO 2) has been found to be an efficient heterogeneous catalyst for chemo- and regioselective deprotection of acetonides at room temperature to produce the corresponding diols in excellent yields.
Synthesis of 5-deoxy-5-phosphinyl-D-galactopyranose derivatives: New phospha-sugar analogs of D-galactose
Hanaya, Tadashi,Sugiyama, Ken-Ichi,Fujii, Yasushi,Akamatsu, Akihito,Yamamoto, Hiroshi
, p. 1301 - 1309 (2007/10/03)
The addition reaction of dimethyl phosphonate to 3,6-di-O-benzyl-1,2-O-isopropylidene-α-L-arabino-hexofuranos-5-ulose (11), followed by deoxygenation of 5-hydroxyl group, provided 5-deoxy-5-dimethoxyphosphinyl-D-galactofuranose derivative (13a). Reduction
Aureolic acid antibiotics: Synthesis of the cyclohexenone segment from D-glucose
Gurjar, M.K.,Devi, T. Rama,Reddy, K.L.N.,Sharma, P.A.,Dhar, T.G. Murali
, p. 995 - 1003 (2007/10/02)
The cyclohexenone segment which is common to all the aureolic acid group of antibiotics has been synthesised from D-glucose.Two routes have been designed to obtain methyl 3-O-benzyl-6-deoxy-2-O-methyl-D-galactopyranoside.Route-A involves the introduction
Ortho Ester Claisen Rearrangements of Three 3-C-(Hydroxymethyl)methylene Derivatives of Hexofuranose: Stereoselective Introduction of a Quaternary Center on C-3 of D-ribo-, L-lyxo-, and D-arabino-Hexofuranoses
Tadano, Kin-ichi,Idogaki, Yoko,Yamada, Hirohiko,Suami, Tetsuo
, p. 1201 - 1210 (2007/10/02)
Ortho ester Claisen rearrangements of (E)-3-deoxy-3-C--1,2:5,6-di-O-isopropylidene-α-D-ribo-hexofuranose (3-E), -β-L-lyxo-hexafuranose (12-E), and -β-D-arabino-hexofuranose (33-E) proceeded with high stereoselectivity to provide the rearranged products 13, 15, and 34, respectively, in acceptable yields.The rearrangements of the corresponding Z isomers 3-Z, 12-Z, and 33-Z were also investigated.The stereochemistries of the newly introduced quaternary center on C-3 of compounds 13, 15, and 34 were established unambiguouosly by chemical modifications of each rearranged product.
