The disclosure provides multimeric oligonucleotide compounds, comprising two or more target-specific oligonucleotides (e.g., antisense oligonucleotides (ASOs)), each being resistant to cleavage, and linked together by a cleavable linker. In particular, two or more linked target-specific oligonucleotides, each to a different target, allows concomitant inhibition of multiple genes' expression levels, while exhibiting favorable pharmacokinetic and pharmacodynamic properties. Methods of making and uses of the described compounds are also provided.
Synthesis and antiviral evaluation of novel conformationally locked nucleosides and masked 5′-phosphate derivatives thereof
作者:Torsten Bryld、Marianne H. Sørensen、Poul Nielsen、Troels Koch、Claus Nielsen、Jesper Wengel
DOI:10.1039/b203484k
日期:2002.7.11
As part of a programme towards evaluating the potential of conformationally locked 3â²-deoxy- and 3â²-azido-3â²-deoxy-nucleoside derivatives as prodrugs of potential 5â²-O-triphosphorylated anti-HIV drugs, novel nucleoside derivatives with locked N-type (north-type, C3â²-endo) furanose conformation were prepared using convergent synthetic strategies. In addition, masked 5â²-monophosphate derivatives of these, and of a conformationally restricted 3â²-azido-3â²-deoxynucleoside with E-type (eastern-type, O4â²-endo) furanose conformation, were prepared in order to potentially circumvent the first phosphorylation step. However, neither the free 5â²-hydroxy derivatives nor the masked 5â²-monophosphates showed anti-HIV activity in MT-4 cells.