102987-83-7

Upstream product

• 98796-51-1 5'-O-(4,4'-dimethoxytrityl)-2'-deoxythymidine-3'-O-[O-(2-cyanoethyl)-N,N'-diisopropylphosphoramidite] 
• 863507-20-4 5'-OH-dG^i-Bupo_CNEdG^i-Bu-3'-O-Lev 
• 78635-98-0 3'-O-levulinoylthymidine 
• 40615-39-2 5'-O-(4-4'-dimethoxytrityl)thymidine 

Downstream Products

• 50571-26-1 5'-O-dimethoxytritylthymidine 3'-H-phosphonate 
• 105784-94-9 5'-O-(4,4'-dimethoxytrityl)thymidin-3'-yl ethyl phosphonate 
• 130288-81-2 5'-O-dimethoxytrityl-2'-deoxythymidine-3'-H-phosphonate 
• 170158-29-9 2-aminoethyl 2-cyanoethyl phosphonate 

Relevant academic research and scientific papers

Solid phase oligonucleotide synthesis by using β-CE H-phosphonate approach

A new approach to the solid phase synthesis of oligonucleotide is described, which is based on oxidative coupling of nucleoside 3′-β-CE H-phosphonates in presence of N-Bromosuccinimide (NBS) as a coupling agent.

Large scale, liquid phase oligonucleotide synthesis by alkyl H- phosphonate approach

A new approach to the liquid phase synthesis of oligonucleotide is described, it is based on oxidative coupling using alkyl H-phosphonate synthon and polyethylene glycol (PEG5000) as a soluble support. Nucleoside alkyl H-phosphonate undergoes o

High-yield solution-phase synthesis of di- and trinucleotide blocks assisted by polymer-supported reagents

(Chemical Equation Presented) A new solution-phase phosphoramidite approach is reported for oligonucleotide synthesis employing recyclable solid-supported reagents. It uses polyvinyl pyridinium tosylate as the activator of a nucleoside-3′-O-phosphoramidit

Proton-block strategy for the synthesis of oligodeoxynucleotides without base protection, capping reaction, and P-N bond cleavage reaction

A new N-unprotected phosphoramidite method called the "proton-block" approach was developed for the chemical synthesis of oligodeoxynucleotides based on the hitherto simplest and rational principle of acid-base reactions. This concept involves protection

Commercially available 5'-DMT phosphoramidites as reagents for the synthesis of vinylphosphonate-linked oligonucleic acids.

[reaction: see text]. Commercially available cyanoethyl phosphoramidites derived from T, d(C), d(A), and d(G) were hydrolyzed (1H-tetrazole, MeCN/H2O) to give the corresponding H-phosphonates in excellent yields. Palladium(0)-catalyzed cross-coupling of e

Solution phase synthesis of dithymidine phosphorothioate by a phosphotriester method using new S-protecting groups

A phosphotriester method for the synthesis of dithymidine phosphorothioates with eight S-protecting groups has been investigated. Three of the S-protecting groups possesed catalytic activity, however side reactions occurred under deprotection. The best S-protecting group was 4- chloro-2-nitrobenzyl which could be removed with a minimum of side reactions (0.3 %). The coupling reagent PyFNOP (11) gave protected dithymidine phosphorothioate in 96 % yield after 15 min coupling.

Synthesis of oligodeoxynucleoside phosphoromonothioates and phosphorodithioates by a phosphotriester method

A phosphotriester method for the synthesis of dithymidine phosphoromonothioates and phosphorodithioates with new S-protecting groups has been investigated. Four of the S-protecting groups possesed catalytic activity, however side reactions occurred during deprotection. The best S- protecting group was 4-chloro-2-nitrobenzyl which could be removed with a minimum of side reactions (0.3 %). The coupling reagent PyFNOP (14) gave protected dithymidine phosphoromonothioate in 96 % yield after 15 rain coupling. Furthermore PyFNOP chemoselectively activates oxygen in nucleoside phosphorodithioate monomers 9 and can be used for the synthesis of oligodeoxynucleoside phosphorodithioates with mixed base sequences.

A NEW AND VERSATILE APPROACH TO THE PREPARATION OF VALUABLE DEOXYNUCLEOSIDE 3'-PHOSPHITE INTERMEDIATES

The easily accessible and crystalline monofunctional phosphitylating reagent bis-(diisopropylamino)chlorophosphine has been used for the synthesis of phosphoramidites and H-phosphonates of d-nucleosides and, also, the formation of 3'-5'-internucleotidic phosphonate bonds.