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4330-34-1

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  • Factory Price API 99% METHYL 2-DEOXY-3,5-DI-O-P-TOLUOYL-D-*RIB OFURANOSIDE 4330-34-1 GMP Manufacturer

    Cas No: 4330-34-1

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4330-34-1 Usage

Chemical Properties

Pale Brown Oil

Uses

Methyl 2-Deoxy-3,5-di-O-p-toluoyl-D-erythro-pentoside (cas# 4330-34-1) is a compound useful in organic synthesis.

Check Digit Verification of cas no

The CAS Registry Mumber 4330-34-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,3 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4330-34:
(6*4)+(5*3)+(4*3)+(3*0)+(2*3)+(1*4)=61
61 % 10 = 1
So 4330-34-1 is a valid CAS Registry Number.
InChI:InChI=1/C22H24O6/c1-14-8-4-6-10-16(14)21(23)26-13-19-18(12-20(25-3)27-19)28-22(24)17-11-7-5-9-15(17)2/h4-11,18-20H,12-13H2,1-3H3/t18-,19+,20?/m0/s1

4330-34-1Relevant articles and documents

Synthesis method of desicitabine intermediate alpha-substituted deoxyribose

-

, (2019/08/07)

The invention provides a synthesis method of desicitabine intermediate alpha-substituted deoxyribose. The synthesis route is as follows: R refers to p-methyl benzoyl and X refers to chlorine atomin according to the formula 3 and the formula I. The synthesis method includes the following steps: 1) methylation reaction: a compound of formula 1 is reacted with methyl alcohol under acid catalysis to obtain a compound of the formula 2; 2) acylation reaction: the compound of the formula 2 is dissolved in an organic solvent and reacted with p-methyl benzoyl chloride under alkali catalysis to obtain acompound of the formula 3; 3) chlorination reaction: acetyl chloride is used to adjust the pH value of the acylation reaction solution at low temperature, the acylation reaction solution is filtered,is added with a low polar solvent A, and then is added with acetic acid solution of hydrogen chloride to react to obtain a compound of formula I. The synthesis method uses p-methyl benzoyl as a protective group in the process of synthesizing dicitabine key intermediate to substitute for deoxyribose, and controls the chlorination reaction conditions to obtain high purity alpha-substituted deoxyribose, the high purity alpha-substituted deoxyribose is conducive to coupling with silylation-protected 5-azacytidine to obtain high proportion of beta / alpha, and the dicitabine yield rate is increased.

Regioselective and stereoselective route to N2-β-tetrazolyl unnatural nucleosides via SN2 reaction at the anomeric center of Hoffer's chlorosugar

Bag, Subhendu Sekhar,Talukdar, Sangita,Anjali

, p. 2044 - 2050 (2016/04/05)

We are reporting a regioselective and stereoselective route to N2-β-tetrazolyl aromatic donor/acceptor unnatural nucleosides as new class of possible DNA base analogs. The SN2 substitution reaction at the anomeric center of Hoffer's chlorosugar with various 5-substituted aromatic tetrazoles in THF in presence of K2CO3 proceeds with regioselectivity at N2-tetrazoles and stereoselectivity at α-chlorosugar with very good yield. The stereoelectronic and steric effects play a crucial role for the observed outcome which is also supported from a theoretical (DFT) study. The methodology is simple, eco-compatible and the tetrazolyl unnatural nucleosides might find applications in decorating DNA for various biotechnological and DNA based material science applications.

Triazolyl donor/acceptor chromophore decorated unnatural nucleosides and oligonucleotides with duplex stability comparable to that of a natural adenine/thymine pair

Bag, Subhendu Sekhar,Talukdar, Sangita,Matsumoto, Katsuhiko,Kundu, Rajen

, p. 278 - 291 (2013/02/25)

We report the design and synthesis of triazolyl donor/acceptor unnatural nucleosides via click chemistry and studies on the duplex stabilization of DNA containing two such new nucleosides. The observed duplex stabilization among the self-pair/heteropair has been found to be comparable to that of a natural A/T pair. Our observations on the comparable duplex stabilization has been explained on the basis of possible π-π stacking and/or charge transfer interactions between the pairing partners. The evidence of ground-state charge transfer complexation came from the UV-vis spectra and the static quenching of fluorescence in a heteropair. We have also exploited one of our unnatural DNAs in stabilizing abasic DNA.

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