Synthesis and transcription studies on 5'-triphosphates derived from 2'-C-branched-uridines: 2'-homouridine-5'-triphosphate is a substrate for T7 RNA polymerase.

Abstract excerpt

The 5'-triphosphates of 2'-hydroxymethyluridine (2'-homouridine) and 2'-hydroxyethyluridine were prepared from the corresponding acetyl-protected nucleosides by initial phosphitylation with 2-chloro-5,6-benzo-1,2,3-dioxaphosphorin-4-one. 2'-Acetamidouridine 5'-triphosphate was prepared in an analogous fashion from uridine 2'-C-, 3'-O-gamma-butyrolactone, in which the 3'-hydroxyl group is internally protected as...

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