作者:Barbara L. Gaffney、Luis A. Marky、Roger A. Jones
DOI:10.1016/0040-4020(84)85098-x
日期:1984.1
Synthesis of an N-protected derivative of 2-amino-2'-deoxyadenosine (dA') from 2'-deoxyguanosine is reported. The syntheses of several oligodeoxynucleotides containing this modified nucleoside are described, together with physical characterization via melting studies and CD conformational analysis. As expected, the 2-amino group is seen to add to the duplex stability. Although the sequence d(TA')3
据报道,由2'-脱氧鸟苷合成了N-保护的2-氨基-2'-脱氧腺苷(dA')衍生物。描述了几种含有这种修饰核苷的寡聚脱氧核苷酸的合成,以及通过熔解研究和CD构象分析的物理表征。如所预期的,看到2-氨基基团增加了双链体的稳定性。尽管发现序列d(TA')3经历了盐诱导的构象转变,但是诸如d(CGTA'CG)的混合序列却没有表现出这种行为。这些序列中存在的所有鸟嘌呤残基均为O 6用氰基乙基或4-硝基苯基乙基进行保护,以消除鸟嘌呤在磷酸化和缩合反应中的降解。描述了引入和除去这些O 6保护基的方法。