Sproat B S, Iribarren A M, Garcia R G, Beijer B
European Molecular Biology Laboratory, Heidelberg, FRG.
Nucleic Acids Res. 1991 Feb 25;19(4):733-8. doi: 10.1093/nar/19.4.733.
New synthetic routes have been devised for the high yield preparation of protected 2'-O-allylribonucleoside-3'-O-phosphoramidites, exemplified by the ribonucleosides guanosine and 2,6-diaminopurine riboside (2-aminoadenosine). Key features are the use of versatile intermediates and an easy allylation step. The development of a novel synthon based on 2'-O-allyl-2,6-diaminopurine riboside enables short 2'-O-allyl-oligoribonucleotide probes to be synthesized with adenine replaced by 2-aminoadenine. Thus very stable hybrids with complementary RNA target sequences can be formed due to the formation of the three hydrogen bond 2-amino A.U base pairs.
已设计出用于高产率制备受保护的2'-O-烯丙基核糖核苷-3'-O-亚磷酰胺的新合成路线,鸟苷和2,6-二氨基嘌呤核糖核苷(2-氨基腺苷)核糖核苷即为示例。关键特征是使用通用中间体和简便的烯丙基化步骤。基于2'-O-烯丙基-2,6-二氨基嘌呤核糖核苷的新型合成子的开发,使得能够合成短的2'-O-烯丙基寡核糖核苷酸探针,其中腺嘌呤被2-氨基腺嘌呤取代。因此,由于形成了三个氢键的2-氨基A.U碱基对,可与互补RNA靶序列形成非常稳定的杂交体。