75933-81-2Relevant academic research and scientific papers
4-CHLOROPHENYL 5-CHLORO-8-QUINOLYL HYDROGEN PHOSPHATE: A USEFUL PHOSPHORYLATING AGENT FOR GUANOSINE 3'-PHOSPHOTRIESTER
Takaku, Hiroshi,Kamaike, Kazuo,Kasuga, Kenichi
, p. 197 - 200 (2007/10/02)
5'-O-Dimethoxytrityl-2'-O-tetrahydropyranyl-N2-benzoylguanosine smoothly reacts with 4-chlorophenyl 5-chloro-8-quinolyl hydrogen phosphate in the presence of 8-quinolinesulfonyltetrazolide (QS-te) to give 5'-O-dimethoxytrityl-2'-O-tetrahydropyr
Synthesis of Bis(5-chloro-8-quinolyl) Nucleoside 5'-Phosphates in Oligoribonucleotide Synthesis by the Phosphotriester Approach
Takaku, Hiroshi,Kamaike, Kazuo,Kasuga, Kenichi
, p. 4937 - 4940 (2007/10/02)
A new phosphorylating agent, bis(5-chloro-8-quinolyl) phosphate was found to be a useful agent for the phosphorylation of the 5'-hydroxyl group of unprotected nucleosides.This agent smoothly reacts with 3',5',-unprotected nucleosides in the presence of 8-quinolinesulfonyl tetrazolide (QS-t) to give the corresponding bis(5-chloro-8-quinolyl) nucleoside 5'-phosphates in good yields without 3'-mono- and 3',5'-diphosphorylated products.They are key intermediates for the synthesis of oligoribonucleotides bearing 5'-terminal phosphate.Zinc chloride can be used as an effective and mild agent for removal of 5-chloro-8-quinolyl group.
4-CHLOROPHENYL 5-CHLORO-8-QUINOLYL PHOSPHOROCHLORIDATE: A PRACTICALLY USEFUL PHOSPHORYLATING AGENT FOR OLIGORIBONUCLEOTIDE SYNTHESIS VIA PHOSPHOTRIESTER APPROACH
Takaku, Hiroshi,Yoshida, Masatoshi,Kamaike, Kazuo,Hata, Tsujiaki
, p. 197 - 200 (2007/10/02)
5'-O-Dimethoxytrityl-2'-O-tetrahydropyranylnucleosides (2) smoothly reacts with 4-chlorophenyl 5-chloro-8-quinolyl phosphorochloridate (1) prepared form 4-chlorophenyl phosphodichloridate and 5-chloro-8-hydroxyquinoline to give 5'-O-dimethoxytrityl-2'-O-tetrahydropyranylnucleoside 3'-(4-chlorophenyl, 5-chloro-8-quinolyl) phosphates (3) in high yields.They are key intermediates for the synthesis of oligoribonucleotides via phosphotriester approach.
4-CHLOROPHENYL 5-CHLORO-8-QUINOLYL PHOSPHOROTETRAZOLIDE: A HIGHLY EFFICIENT PHOSPHORYLATING AGENT FOR OLIGORIBONUCLEOTIDE SYNTHESIS
Takaku, Hiroshi,Nomoto, Tadaaki,Kamaike, Kazuo
, p. 543 - 546 (2007/10/02)
4-Chlorophenyl 5-chloro-8-quinolyl phosphorotetrazolide (2) was a highly efficient phosphorylating agent for the synthesis of 5'-O-dimethoxytrityl-2'-O-tetrahydropyranylnucleoside 3'-(4-chlorophenyl, 5-chloro-8-quinolyl) phosphates (4).The fully protected
(8-Quinolinesulfonyl)tetrazole: A New Type of Highly Efficient Coupling Agent for the Synthesis of Ribooligonucleotides by the Phosphortriester Approach
Takaku, Hiroshi,Yoshida, Masatoshi
, p. 589 - 593 (2007/10/02)
(8-Quinolinesulfonyl)Tetrazole (QS-tet) has been developed as a new type of highly efficient coupling agent in the synthesis of phosphotriester bonds.This reagent very rapidly completes the coupling reactions, and the yield is considerably higher than tha
