申请人:——
公开号:US08053212B1
公开(公告)日:2011-11-08
This invention relates to nucleoside, nucleotide, and oligonucleotide analogs that incorporate non-standard nucleobase analogs, defined to be those that present a pattern of hydrogen bonds to a paired nucleobase analog in a complementary strand that is different from the pattern presented by adenine, guanine, cytosine, and thymine. The invention is specifically concerned with compositions of matter that present the donor-donor-acceptor, donor-acceptor-donor, and acceptor-donor-donor non-standard hydrogen bonding patterns on pyrimidine analogs, where nucleoside analogs bearing these pyrimidine analogs do not epimerize as easily as those known in the art. The heterocycles on these nucleoside analogs are diaminopyridines and aminopyridones that have electron withdrawing groups attached to the position analogous to the 5-position of the ring in standard pyrimidines, including nitro, cyano, and carboxylic acid derivatives.
这项发明涉及核苷酸、核苷酸和寡核苷酸类似物,其包含非标准核碱类似物,定义为这些类似物与互补链中的配对核碱类似物呈现的氢键模式不同于腺嘌呤、鸟嘌呤、胞嘧啶和胸腺嘧啶呈现的模式。该发明特别涉及呈现供体-供体-受体、供体-受体-供体和受体-供体-供体非标准氢键模式的嘧啶类似物的物质组合,其中带有这些嘧啶类似物的核苷类似物不像已知的那样容易发生对映异构。这些核苷类似物上的杂环是二氨基吡啶和氨基吡啶酮,它们带有连接到与标准嘧啶环中的5-位置类似的位置的电子吸引基团,包括硝基、氰基和羧酸衍生物。