Hydroxyalkylated phosphoramidate, phosphoramidothioate and phosphorodiamidothioate derivatives as thiophosphate protecting groups in the development of thermolytic DNA prodrugs
The chemical synthesis of phosphorothioate/phosphorodithioate analogues of 2-methoxy-lysophosphatidylcholine has been described. For the preparation of new sulfur derivatives of lysophosphatidylcholine both oxathiaphospholane and dithiaphospholane approaches have been employed. Each lysophospholipid analogue was synthesized as a series of five compounds, bearing different fatty acid residues both saturated
compounds, bearing different fattyacid residues both saturated (14:0, 16:0, 18:0) and unsaturated (18:1). The methylation of glycerol 2-hydroxyl function was applied in order to increase the stability of prepared analogues by preventing 1→2 acyl migration. The cytotoxicity of newly synthesized 2-methoxy-lysophosphatidylethanolamine derivatives was evaluated with resazurin-based method in prostate cancer
Syntheses of 5′-Nucleoside Monophosphate Derivatives with Unique Aminal, Hemiaminal, and Hemithioaminal Functionalities: A New Class of 5′-Peptidyl Nucleotides
A number of synthetically useful transformations have been developed to generate novel 5′‐peptidyl nucleosidemonophosphate analogues that incorporate sensitive phosphoaminal, ‐hemiaminal or ‐hemithioaminal functionalities. The strategies adopted entailed the coupling between dipeptides, which enclose a reactive Cα‐functionalized glycine residue and phosphate or phosphorothioate moieties. These developments
Chalcophospholanes useful in the synthesis of oligonucleoside
申请人:Polish Academy of Sciences
公开号:US05359052A1
公开(公告)日:1994-10-25
Methods and compounds are provided for solid phase synthesis of oligonucleotides and related polymers by condensing protected monomer-O-[1,3,2-dichalcogen-substituted-phospholane] synthons in the presence of a catalytic base. Compounds of the invention include 2-N-substituted-1,3,2-dichalcogen-substituted-phospholane precursors of the above synthons, the protected monomer-O-[1,3,2-dichalcogen-substituted-phospholane] synthons, and P-chiral oligonucleotides and related P-chiral polymers.
Oligonucleotides having phosphorothioate linkages of high chiral purity
申请人:Isis Pharmaceuticals, Inc.
公开号:US05599797A1
公开(公告)日:1997-02-04
Sequence-specific phosphorothioate oligonucleotides comprising nucleoside units which are joined together by either substantially all Sp or substantially all Rp phosphorothioate intersugar linkages are provided. Such sequence-specific phosphorothioate oligonucleotides having substantially chirally pure intersugar linkages are prepared by enzymatic or chemical synthesis.