69304-43-4Relevant academic research and scientific papers
Synthesis method for azvudine
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Paragraph 0082-0084, (2020/11/22)
The invention discloses a synthesis method for azvudine. The method comprises the following steps of carrying out a hydroxyl substitution reaction on a compound 4 and an iodine elementary substance toobtain a compound 5, carrying out an elimination reaction on an iodo group in the compound 5 to obtain a compound 6, reacting the compound 6 with azide under the catalysis of ICl to obtain a compound7, carrying out an iodine substitution reaction on the compound 7 and carboxylic acid to obtain a compound 8, and carrying out an amino and hydroxyl deprotection reaction on the compound 8 to obtaina compound 9, namely the alzvudine. Compared with an existing synthesis method, the synthesis method has the advantages of short synthesis route, shortened reaction time, mild reaction conditions andeasily controlled reaction process, can be used for preparing the alzvudine with the lower cost, and has a very good application prospect.
MODIFIED NUCLEOSIDE PHOSPHORAMIDITES
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Paragraph 0196, (2019/04/11)
The present disclosure relates to compounds and compositions containing 5'-phosphoramidite nucleoside monomers of formulae (I) and (II), and methods of making and use, wherein the substituents are as defined in the appended claims.
High-yield synthesis method of sofosbuvir and sofosbuvir prepared with method
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Paragraph 0030, (2016/11/07)
The invention relates to a high-yield synthesis method of sofosbuvir and sofosbuvir prepared with the method. The method comprises steps as follows: (a) cytidine and benzoic anhydride are dissolved in a first organic solvent for a reaction; TIDPSCl2 is ad
NUCLEOSIDE PHOSPHONATE DERIVATIVES
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Page/Page column 30, (2009/12/02)
The present invention discloses compounds of formula (I) or (II), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit, preventing or treating abnormal cellular proliferation and/or a viral infection, particularly by HIV, HCV o
An azidomethyl protective group in the synthesis of oligoribonucleotides by the phosphotriester method
Efimov,Aralov,Fedunin,Klykov,Chakhmakhcheva
scheme or table, p. 250 - 253 (2010/04/06)
A rapid and effective method of an automatic oligoribonucleotide synthesis alternative to the phosphoramidite one was developed. This method is based on the phosphotriester approach to internucleotide bond formation under intramolecular O-nucleophilic cat
Preparation of zwitterionic ribonucleoside phosphoramidites for solid-phase siRNA synthesis
Smicius, Romualdas,Engels, Joachim W.
, p. 4994 - 5002 (2008/12/20)
(Chemical Equation Presented) RNA oligomers, carrying 2′-O-modified nucleosides, proved to be extremely useful in different antisense strategies, including RNAi. The 2′-O-alkyl modification, carrying an amino functionality, deserves special attention due
The 4-(N-dichloroacetyl-N-methylamino)benzyloxymethyl group for 2′-hydroxyl protection of ribonucleosides in the solid-phase synthesis of oligoribonucleotides
Cieslak, Jacek,Grajkowski, Andrzej,Kauffman, Jon S.,Duff, Robert J.,Beaucage, Serge L.
, p. 2774 - 2783 (2008/09/20)
(Chemical Equation Presented) Emerging RNA-based technologies for controlling gene expression have triggered a high demand for synthetic oligoribonucleotides and have motivated the development of ribonucleoside phosphoramidites that would exhibit coupling
Semisynthesis of 3′(2′)-O-(aminoacyl)-tRNA derivatives as ribosomal substrate
Cui, Zhiyong,Zhang, Biliang
, p. 297 - 310 (2008/02/08)
An efficient synthesis of (3′-terminally) 3′(2′)-O- aminoacylated pCpA derivatives is described, which could lead to the production of (aminoacyl)-tRNAs following T4 RNA ligase mediated ligation. The tetrahydrofuranyl (thf) group was used as a permanent p
Assessment of 4-nitrogenated benzyloxymethyl groups for 2′-Hydroxyl protection in solid-phase RNA synthesis
Cieslak, Jacek,Kauffman, Jon S.,Kolodziejski, Michelle J.,Lloyd, John R.,Beaucage, Serge L.
, p. 671 - 674 (2008/02/05)
The search for a 2′-OH protecting group that would impart ribonucleoside phosphoramidites with coupling kinetics and coupling efficiencies comparable to those of deoxyribonucleoside phosphoramidites led to an assessment of 2′-0-(4-nitrogenated benzyloxy)m
Synthesis of RNA using 2′-O-DTM protection
Semenyuk, Andrey,Foeldesi, Andras,Johansson, Tommy,Estmer-Nilsson, Camilla,Blomgren, Peter,Braennvall, Mathias,Kirsebom, Leif A.,Kwiatkowski, Marek
, p. 12356 - 12357 (2007/10/03)
tert-Butyldithiomethyl (DTM), a novel hydroxyl protecting group, cleavable under reductive conditions, was developed and applied for the protection of 2′-OH during solid-phase RNA synthesis. This function is compatible with all standard protecting groups used in oligonucleotide synthesis, and allows for fast and high-yield synthesis of RNA. Oligonucleotides containing the 2′-O-DTM groups can be easily deprotected under the mildest possible aqueous and homogeneous conditions. The preserved 5′-O-DMTr function can be used for high-throughput cartridge RNA purification. Copyright
