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2,3,4-tri-O-acetyl-1-bromo-6-O-tosyl-α-L-gulopyranoside is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139757-70-3

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139757-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139757-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,5 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139757-70:
(8*1)+(7*3)+(6*9)+(5*7)+(4*5)+(3*7)+(2*7)+(1*0)=173
173 % 10 = 3
So 139757-70-3 is a valid CAS Registry Number.

139757-70-3Relevant academic research and scientific papers

Selection of a synthetic glycan oligomer from a library of DNA-templated fragments against DC-SIGN and inhibition of HIV gp120 binding to dendritic cells

Ciobanu, Mihai,Huang, Kuo-Ting,Daguer, Jean-Pierre,Barluenga, Sofia,Chaloin, Olivier,Schaeffer, Evelyne,Mueller, Christopher G.,Mitchell, Daniel A.,Winssinger, Nicolas

, p. 9321 - 9323 (2011/10/09)

We report the synthesis of a nucleic acid-encoded carbohydrate library, its combinatorial self-assembly into 37485 pairs and a screen against DC-SIGN leading to the identification of consensus ligand motifs. A prototypical example from the selected pairs

Novel cyclic tetraselenides of mannose: synthesis and mechanistic studies

Sivapriya, Kirubakaran,Suguna, Perumal,Chandrasekaran, Srinivasan

, p. 2091 - 2095 (2008/02/04)

In this Letter, we disclose the synthesis of novel cyclic tetraselenides starting from mannose which are very unusual and rare and have been synthesised for the first time. The structures are confirmed by X-ray analysis. The reactivity of the reagent tetr

Asymmetric Synthesis and Biological Evaluation of β-L-(2R,5S)- and α-L-(2R,5R)-1,3-Oxathiolane-Pyrimidine and -Purine Nucleosides as Potential Anti-HIV Agents

Jeong, Lak S.,Shinazi, Raymond F.,Beach, J. Warren,Kim, Hea O.,Nampalli, Satyanarayana,et al.

, p. 181 - 195 (2007/10/02)

In order to study the structure-acivity relationships of L-oxathiolanyl nucleosides as potential anti-HIV agents, a series of enantiomerically pure L-oxathiolanyl pyrimidine and purine nucleosides were synthesized and evaluated for anti-HIV-1 activity in human peripheral blood mononuclear (PBM) cells.The key intermediate 8 was synthesized starting from L-gulose via 1,6-thiaanhydro-L-gulopyranose.The acetate 8 was condensed with thymine, 5-substituted uracils and cytosines, 6-chloropurine, and 6-chloro-2-fluoropurine to give pyrimidine and purine nucleosides.Upon evaluation of these final nucleosides, the 5-fluorocytosine derivative 51 was found to be the most potent compound among those tested.In the case of 5-substituted cytosine analogues, the antiviral potency was found to be in the following decreasing order: cytosine (β-isomer) > 5-iodocytosine (β-isomer) > 5-fluorocytosine (α-isomer) > 5-methylcytosine (α-isomer) > 5-methylcytosine (β-isomer) > 5-bromocytosine (β-isomer) > 5-chlorocytosine (β-isomer).Among the thymine, uracil, and 5-substituted uracil derivatives, thymine (α-isomer) and uracil (β-isomer) derivatives exhibited moderate anti-HIV activity.In the purine series, the antiviral potency is found to be in the following decreasing order: adenine (β-isomer) > 6-chloropurine (β-isomer) > 6-chloropurine (α-isomer) > 2-NH2-6-Cl-purine (β-isomer) > guanine (β-isomer) > N6-methyladenine (α-isomer) > N6-methyladenine (β-isomer).The cytotoxicity was also determined in human PBM cells as well as Vero cells.None of the synthesized nucleosides was toxic up to 100 μ in PBM cells.

Structure-Activity Relationships of β-D-(2S,5R)- and α-D-(2S,5S)-1,3-oxathiolanyl Nucleosides as Potential Anti-HIV Agents

Jeong, Lak S.,Schinazi, Raymond F.,Beach, J. Warren,Kim, Hea O.,Shanmuganathan, Kirupathevy,et al.

, p. 2627 - 2638 (2007/10/02)

The β-D-(2S,5R)- and α-D-(2S,5S)-1,3-oxathiolanylpyrimidine and -purine nucleosides with natural nucleoside configuration were synthesized and evaluated against HIV-1 in human peripheral blood mononuclear (PBM) cells.The key intermediate 14, which was uti

Enantiomeric Synthesis of (+)-BCH-189 cytosine> from D-Mannose and Its Anti-HIV Activity

Chu, Chung K.,Beach, J. Warren,Jeong, Lak S.,Choi, Bo G.,Comer, Frank I.,et al.

, p. 6503 - 6505 (2007/10/02)

Enantiomerically pure (+)-BCH-189 has been synthesized from D-mannose via 1,6-thioanhydro-D-mannose and its anti-HIV activity has been determined in peripheral blood mononuclear cells.

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