Nucleotides. Part L. Aglycone protection by the (2-dansylethoxy)carbonyl (= {2-{[5-(dimethylamino)naphthalen-l-yl]sulfonyl}ethoxy}carbonyl; dnseoc) group a new variation in oligodeoxyribonucleotide synthesis
作者:Thomas Wagner、Wolfgang Pfleiderer
DOI:10.1002/hlca.19970800118
日期:1997.2.10
(2-dansylethoxy)carbonyl (= 2-[5-(dimethylamino)naphthalen-l-yl]sulfonyl}ethoxy}carbonyl; dnseoc) group was employed for protection of the amino functions of the aglycone residues. The lactam function of 2′-deoxyguanosine was on the one hand unprotected and on the other hand alkylated at O6 of the aglycone with the 2-(4-nitrophenyl)ethyl (npe) and 2-(phenylsulfonyl)ethyl (pse) group, respectively. The syntheses
(2-丹酰基乙氧基)羰基(= 2-[5-(二甲基氨基)萘-1-基]磺酰基}乙氧基}羰基; dnseoc)基团用于保护糖苷配基残基的氨基官能团。2'-脱氧鸟苷的内酰胺功能一方面未受保护,另一方面在O 6处烷基化糖苷配基分别具有2-(4-硝基苯基)乙基(npe)和2-(苯基磺酰基)乙基(pse)的基团。描述了三种常见的2'-脱氧核苷(2'-脱氧胞苷,2'-脱氧腺苷,2'-脱氧鸟苷)的单体结构单元(亚磷酰胺和核苷官能化载体)的合成。正如对三苯甲基化核苷的动力学研究表明,与相应的2-(4-硝基苯基)乙基-(npe)和[2-(4-硝基苯基)乙氧基]羰基(npeoc)-保护的dnseoc基团相比,Dse裂解更不稳定。类似物(参见表2)。这些结果被dnseoc基团在某些寡核苷酸上的快速去保护率所证实。