申请人:Lynx Therapeutics, Inc.
公开号:US05859233A1
公开(公告)日:1999-01-12
The invention provides a method of synthesizing oligonucleotide N3'.fwdarw.P5' phosphoramidates using an amine-exchange reaction of phosphoramidites in which a -deprotected 3'-amino group of a solid phase supported oligonucleotide chain is exhanged for the amino portion of a 5'-phosphoramidite of an incoming monomer which has a protected 3'-amino group. The resulting internucleotide phosphoramidite linkage is then oxidized to form a stable protected phosphoramidate linkage. The method of the invention greatly improves product yields and reduces reagent usage over currently available methods for synthesizing the above class of compound.
该发明提供了一种合成寡核苷酸 N3'.fwdarw.P5' 磷酰胺酯的方法,该方法利用磷酰胺基物质之间的胺交换反应,在这种反应中,固相支持的寡核苷酸链的去保护的 3'-氨基团被交换成一个具有保护的 3'-氨基团的传入单体的 5'-磷酰胺基部分。然后,生成的核苷间磷酰胺基化连接被氧化形成稳定的保护磷酰胺基连接。该发明的方法极大地提高了产物收率,并减少了与目前可用的合成上述类化合物的方法相比的试剂使用量。