N6-(Carbamoylmethyl)-2?-deoxyadenosine, a rare DNA Constituent: Phosphoramidite Synthesis and Properties of Palindromic Dodecanucleotides
作者:Frank Seela、Wilhelm Herdering、Andreas Kehne
DOI:10.1002/hlca.19870700622
日期:1987.9.23
N6-(Carbamoylmethyl)-2′-deoxyadenosine (1), a modified nucleoside occurring in bacteriophage Mu, was synthesized by two different routes. Glycinamide was introdued by nucleophilic displacement of(2,4,6,-triisopro-pylphenyl)sulfonyloxy or ethylsulfinyl groups at C(6) of the purine moiety. Compound 1 was converted into the protected phosphoramidite 6b and employed in solid-phase synthesis of the self-complementary
N 6-(氨基甲酰基甲基)-2'-脱氧腺苷(1),是一种通过噬菌体Mu修饰的核苷,是通过两种不同的途径合成的。通过在嘌呤部分的C(6)处的(2,4,6,-三异丙基苯基苯基)磺酰氧基或乙基亚磺酰基的亲核取代引入了甘氨酸酰胺。将化合物1转化为受保护的亚磷酰胺6b,并用于自互补寡核苷酸7-14的固相合成。2'-脱氧腺苷的置换1引导至T的强烈降低米的低聚物d(AT)的值6(7)和d(ATGAAGCTTCAT)(10), 分别。由于寡聚物10包含内脱氧核糖核酸酶Hind III的识别位点d(AAGCTT),因此将其进行序列特异性水解实验。所述第一或第二A的替换d由1防止酶促磷酸二酯水解(结果与11和12)。相反,如果较小体积的N 6-甲基-2'-脱氧腺苷取代了第二个A d残基,则观察到缓慢水解(结果为14)。