申请人:——
公开号:US20040033967A1
公开(公告)日:2004-02-19
The present invention is directed to nucleoside analogues with as substitute for the sugar part a 1,5-anhydrohexitol moiety, doexygenated and substituted with a nucleobase at the 2-position, of which the hexitorl ring is further substituted with at least one alkoxy substituent at the 3-position or at the 1-position, and to oligonucleotides wherein at least some of the nucleotides are part of the afore mentioned hexitol nucleoside analogues and exhibit sequence-specific hydridization to complementary sequences of nucleic acids, and maintaining or improving the hybridisation strength. The invention further relates to nucleoside analogues with a 1,5-anhydrohexitol moiety as the sugar part, deoxygenated and substituted with a nucleobase at the 2-position, of which the hexitol ring is substituted with a methoxy substituent at the 1-position, having at the same time either a hydroxy or an alkoxy group at the 3-position, or having a 3-deoxygenated position. The inclusion of one or more of the afore mentioned hexitol nucleoside analogues in oligonucleotides provides, inter alia, either for improved binding or for maintained binding of these oligonucleotides to a complementary strand. This invention further relates to the chemical synthesis of these oligomers which are useful diagnostics, therapeutics and as research agents.
本发明涉及以1,5-脱水己糖基取代糖部分的核苷类似物,其在2位上以核碱基进行脱氧和取代,其中己糖环在3位或1位进一步取代至少一个烷氧基取代基,以及寡核苷酸,其中至少一些核苷酸是前述己糖核苷类似物的一部分,并对核酸的互补序列表现出序列特异性杂交,并维持或提高杂交强度。本发明还涉及以1,5-脱水己糖基为糖部分、在2位上脱氧和取代核碱基、在己糖环上以甲氧基取代基在1位取代、同时在3位具有羟基或烷氧基,或者在3位脱氧的核苷类似物。在寡核苷酸中包含前述己糖核苷类似物中的一个或多个,可提供改进的结合或维持这些寡核苷酸与互补链的结合。本发明还涉及这些寡聚体的化学合成,它们是有用的诊断、治疗和研究试剂。