申请人:ISIS Pharmaceuticals, Inc.
公开号:US06153737A1
公开(公告)日:2000-11-28
Linked nucleosides having at least one functionalized nucleoside that bears a substituent such as a steroid molecule, a reporter molecule, a non-aromatic lipophilic molecule, a reporter enzyme, a peptide, a protein, a water soluble vitamin, a lipid soluble vitamin, an RNA cleaving complex, a metal chelator, a porphyrin, an alkylator, a pyrene, a hybrid photonuclease/intercalator, or an aryl azide photo-crosslinking agent exhibit increased cellular uptake and other properties. The substituent can be attached at the 2'-position of the functionalized nucleoside via a linking group. If at least a portion of the remaining liked nucleosides are 2'-deoxy-2'-fluoro, 2'-O-methoxy, 2'-O-ethoxy, 2'-O-propoxy, 2'-O-aminoalkoxy or 2'-O-allyloxy nucleosides, the substituent can be attached via a linking group at any of the 3' or the 5' positions of the nucleoside or on the heterocyclic base of the nucleoside or on the inter-nucleotide linkage linking the nucleoside to an adjacent nucleoside.
具有至少一个带有取代基(如类
固醇分子、报告分子、非芳香族亲脂分子、报告酶、肽、蛋白质、
水溶性
维生素、脂溶性
维生素、RNA裂解复合物、
金属
螯合剂、
卟啉、烷化剂、
芘、混合光
核酸酶/插入剂或芳基
叠氮光
交联剂)的连接核苷的增强细胞摄取和其他性质的连接核苷,所述取代基可以通过连接基团连接到功能化核苷的2'-位置。如果剩余连接核苷的至少一部分是2'-脱氧-2'-
氟、2'-O-甲氧基、2'-O-乙氧基、2'-O-丙氧基、2'-O-
氨基烷氧基或2'-O-烯丙氧基核苷,那么取代基可以通过连接基团连接到核苷的3'或5'位置,或连接到核苷的杂环碱基,或连接到将核苷连接到相邻核苷的核苷间连接上。