Synthesis and Reactions of Nucleoside 5‘-Diphosphate Imidazolide. A Nonenzymatic Capping Agent for 5‘-Monophosphorylated Oligoribonucleotides in Aqueous Solution
We have synthesized adenosine and 7-methylguanosine 5'-diphosphate imidazolides from imidazole and the corresponding nucleoside 5'-diphosphates. The phosphorimidazolide bond of the compounds was susceptible to hydrolysis and hydrolyzed gradually in neutral aqueous solution, but it was more stable than that of the corresponding imidazolides of nucleoside 5'-monophosphate. The 7-methylguanosine 5'-diphosphate imidazolide reacted with guanosine 5'-monophosphate or 5'-monophosphorylated oligoribonucleotides in neutral aqueous solution in the presence of an Mn2+ ion catalyst converting to the cap portion of mRNA or the capped m7Gppp-oligoribonucleotides in substantial yields. The condensation reaction of adenosine 5'-diphosphate imidazolide with adenosine 5'-monophosphate took place similarly in neutral aqueous solution by a divalent metal ion-catalyst such as Mg2+ or Mn2+, yielding diadenosine 5',5'-triphosphate.
SEKINE, MITSUO;IWASE, REIKO;HATA, TSUJIAKI;MIURA, KIN-ICHIRO, J. CHEM. SOC. PERKIN TRANS. PT 1,(1989) N, C. 969-978
Macrocyclic amines as catalysts of the hydrolysis of the triphosphate bridge of the mRNA 5′-cap structure
作者:Zhibo Zhang、Harri Lönnberg、Satu Mikkola
DOI:10.1039/b306268f
日期:——
catalysts hydrolysis of the triphosphate bridge predominated. The latter reaction yielded guanosine 5'-monophosphate, guanosine 5'-diphosphate, 7-methylguanosine 5'-monophosphate and 7-methylguanosine 5'-diphosphate as the initial products, indicating that both of the phosphoric anhydridebonds were cleaved. The overall catalytic activity of all three macrocycles was comparable. The hydrolysis to guanosine
One-Pot Synthesis of α,γ-Dinucleoside 5′-Triphosphates, G<sup>5′</sup>pppG and A<sup>5′</sup>pppA, Using<i>S</i>,<i>S</i>′-Bis(4-chlorophenyl) phosphorodithioate
作者:Koichiro Fukuoka、Fuminori Suda、Ryo Suzuki、Masahide Ishikawa、Tsujiaki Hata
DOI:10.1246/cl.1994.499
日期:1994.3
S,S′-Bis(4-chlorophenyl) phosphorodithioate was useful for the synthesis of α,γ-dinucleoside 5′-triphosphates, G5′pppG and A5′pppA starting from the corresponding unprotected nucleoside 5′-phosphates under neutral conditions. G5′pppG was used for the synthesis of m7G5′pppG by means of the N7-methylation of one of two guanine moieties of G5′pppG.