Tris(1,1,1,3,3,3-hexafluoro-2-propyl) phosphite was used as a phosphonylating reagent for the preparation of nucleoside 3′-H-phosphonate units. The use of a new coupling reagent, 1,3-dimethyl-2-chloro-imidazolinium chloride (DMCI) for the internucleotidic H-phosphonate bond formation via the H-phosphonate approach is also discussed in detail.
A convenient method for the synthesis of deoxyribonucleoside 3′-hydrogenphosphonates
作者:Mitsuo Sekine、Sin-ichiro Narui、Tsujiaki Hata
DOI:10.1016/0040-4039(88)85329-2
日期:1988.1
Appropriately protected 5′-O-dimethoxytrityldeoxyribonucleoside derivatives were converted to the corresponding 3′-hydrogenphosphonates by treatment with phosphinic acid in the presence of mesitylenedisulfonyl chloride via an oxidative phosphonylation process.
MODEL SYNTHESIS OF NUCLEOSIDE BORANOPHOSPHORAMIDATE WITH AMINO ACID FOR PRODRUG PURPOSE
作者:Ping Li、Barbara Ramsay Shaw
DOI:10.1081/ncn-200060244
日期:2005.4.1
A model synthesis of a nucleoside boranophosphoramidate prodrug with (L)-tryptophan methyl ester was accomplished in a one-pot reaction via an H-phosphonate approach. This new type of compound is expected to possess the potent antiviral and anticancer advantages conferred by boranophosphates and normal nucleoside amino acid phosphoramidate.
A Convenient Approach to the Synthesis of Deoxyribonucleoside-3′-hydrogen Phosphonates via Bis(1,1,1,3,3,3-hexafluoro-2-propyl) Phosphonate Intermediate
Transesterification of a new reagent, bis(1,1,1,3,3,3-hexafluoro-2-propyl)phosphonates was found to be very effective for the preparation of deoxyribonucleoside-3′-hydrogen phosphonates. The yields of deoxyribooligonucleotides by the H-phosphonate method on a solid support depended on the molar concentrations of the reacting species.