A new route for the synthesis of some mixed organic phosphorus compounds from 1,3-dioxolan-2-one is reported. By heating a mixture of phosphorus-chlorine derivatives and 1,3-dioxolan-2-one in the presence of a catalyst, mixed phosphorus derivatives having 2-chloroethyl ester groups could be obtained. A wide range of phosphorus derivatives can be obtained using this method.
5' PHOSPHATE MIMICS
申请人:Alnylam Pharmaceuticals, Inc.
公开号:US20150080457A1
公开(公告)日:2015-03-19
The present invention provides nucleosides and oligonucleotides comprising a 5′ phosphate mimics of formula (IVc) or (Vc),
One aspect of the present invention relates to modified nucleosides and oligonucleotides comprising such dinucleotide of formula (Ia). Another aspect of the invention relates to a method of inhibiting the expression of a gene in call, the method comprising (a) contacting an oligonucleotide of the invention with the cell; and (b) maintaining the cell from step (a) for a time sufficient to obtain degradation of the mRNA of the target gene.