CESIUM FLUORIDE PROMOTES SYNTHESIS OF RIBOOLIGONUCLEOTIDES VIA PHOSPHOTRIESTER APPROACH
作者:Hiroshi Takaku、Tadaaki Nomoto、Mitsuho Murata、Tsujiaki Hata
DOI:10.1246/cl.1980.1419
日期:1980.11.5
In the presence of cesium fluoride, the reactions of a fully protected 5′-O-dimethoxytrityl-2′-O-tetrahydropyranyl-N-acylnucleoside 3′-(4-chlorophenyl, 5-chloro-8-quinolyl) phosphates with 5′-hydroxyl nucleosides proceeded rapidly under mild conditions to afford the corresponding ribodinucleoside monophosphates in good yields.
Oligonucleotide synthesis. Part 34. (Methoxyethoxy)methyl group: new amide and hydroxyl protecting groups of uridine in oligonucleotide synthesis
作者:Tsunehiko Ito、Souichi Ueda、Hiroshi Takaku
DOI:10.1021/jo00356a033
日期:1986.3
Oligonucleotide synthesis. 10. (8-Quinolinesulfonyl)tetrazole: a new type of highly efficient coupling agent for the synthesis of ribooligonucleotides by the phosphotriester approach
作者:Hiroshi Takaku、Masatoshi Yoshida
DOI:10.1021/jo00316a020
日期:1981.1
A new synthetic route to oligoribonucleotides based on CpRu-catalyzed deallylation
A triribonucleotide 3-5 U, which is fully protected by an allyl group at the T-hydroxy and phosphoric acid positions was synthesized, the deprotection being quantitatively achieved by use of a catalytic amount of CpRu(eta(3)-C3H5)(2-quinolinecarboxylato) in methanol. The reaction is completed within 30 min at ambient temperature. The utility of the simple allyl protecting group has the potential to open a new pathway in the synthesis of RNA-related compounds. (c) 2007 Elsevier Ltd. All rights reserved.
Solid-phase triester synthesis of modified triuridylates using an effective condensing agent
作者:N. M. Shevchenko、G. V. Panasenko、P. S. Usenko、A. S. Shalami、Z. V. Levitskaya、T. A. Dashevskaya、V. A. Gladka