The naphthaloyl group has been found to be a selective amino protecting group for deoxycytidine, deoxyadenosine, and deoxyguanosine in oligodeoxyribonucleotide synthesis. All three protected monomers obtained (78–85%), being six-membered cyclic imides, were fairly stable. These protected monomers were used successfully for the preparation of dimers (phosphodiester approach) and tetramers (phosphotriester approach) in solution as well as solid phase, respectively. The group acted as a purification tool due to its high lipophilicity. No adverse effect has been observed either on the glycosidic bond (depurination) or the internucleotidic bond during its removal. The monomeric units were characterized by UV, NMR, and elemental analyses whereas the tetramers were characterized by enzymatic hydrolyses with snake venom phosphodiesterase followed by alkaline phosphatase.
萘酰基团已被发现是脱氧胞苷、脱氧腺苷和脱氧鸟苷在寡脱氧核糖核苷酸合成中的选择性氨基保护基团。所得到的三种保护单体(78-85%),均为六元环亚酰胺,相当稳定。这些保护单体成功地用于溶液相和固相分别制备二聚体(磷酸二酯途径)和四聚体(磷酸三酯途径)。该基团由于其高亲脂性而作为一种纯化工具。在其去除过程中,既没有观察到对糖苷键(去嵌合)的不良影响,也没有观察到对核苷酸间键的不良影响。单体单位通过紫外线、核磁共振和元素分析进行了表征,而四聚体通过蛇毒磷酸二酯酶酶解后接碱性磷酸酶进行了表征。