<sup>15</sup>N-Multilabeled Adenine and Guanine Nucleosides. Syntheses of [1,3,NH<sub>2</sub>-<sup>15</sup>N<sub>3</sub>]- and [2-<sup>13</sup>C-1,3,NH<sub>2</sub>-<sup>15</sup>N<sub>3</sub>]-Labeled Adenosine, Guanosine, 2‘-Deoxyadenosine, and 2‘-Deoxyguanosine
作者:José-Luis Abad、Barbara L. Gaffney、Roger A. Jones
DOI:10.1021/jo982372k
日期:1999.9.1
the following specifically (15)N- and (13)C-multilabeled nucleosides: [1,3,NH(2)-(15)N(3)]- and [2-(13)C-1,3,NH(2)-(15)N(3)]-adenosine; [1,3,NH(2)-(15)N(3)]- and [2-(13)C-1,3,NH(2)-(15)N(3)]-guanosine; [1,3,NH(2)-(15)N(3)]- and [2-(13)C-1,3,NH(2)-(15)N(3)]-2'-deoxyadenosine; [1,3,NH(2)-(15)N(3)]- and [2-(13)C-1,3,NH(2)-(15)N(3)]-2'-deoxyguanosine. In each set, the (13)C2 atom functions as a "tag" that
我们报告到以下具体(15)N-和(13)C多标记核苷的高产途径:[1,3,NH(2)-(15)N(3)]-和[2-(13 )C-1,3,NH(2)-(15)N(3)]-腺苷;[1,3,NH(2)-(15)N(3)]-和[2-(13)C-1,3,NH(2)-(15)N(3)]-鸟苷;[1,3,NH(2)-(15)N(3)]-和[2-(13)C-1,3,NH(2)-(15)N(3)]-2'-脱氧腺苷; [1,3,NH(2)-(15)N(3)]-和[2-(13)C-1,3,NH(2)-(15)N(3)]-2'-脱氧鸟苷。在每组中,(13)C2原子充当“标签”,使(15)N1和(15)N3原子与RNA或DNA片段的(15)N NMR中的未标记形式毫无区别。腺嘌呤和鸟嘌呤核苷的这种合成策略的关键中间体是[NH(2),CONH(2)-(15)N(2)]-5-氨基-4-咪唑甲酰胺。[2-(13)C]-标