申请人:Vorobiev Alexei
公开号:US09056887B2
公开(公告)日:2015-06-16
Minor groove binder phosphoramidites having the formula M-L-PA, wherein M is a minor groove binder comprising a protected heteroaromatic amine, L is a linker, and PA is a phosphoramidite group, have been synthesized. Preferred methods of synthesis include synthesizing a minor groove binder intermediate containing a transiently protected hydroxyl group, protecting heteroaromatic amines of the corresponding minor groove binder intermediate as carbamate intermediates, reacting the carbamate intermediate to remove the transient protecting group to yield carbamate-protected minor groove binder agent as an intermediate with a free hydroxyl group, and converting the intermediate with a free hydroxyl group to the desired minor groove binder phosphoramidite. These minor groove binder phosphoramidites are useful in the preparation of oligonucleotide conjugates, particularly those for use as probes and primers. In preferred methods, an oligonucleotide sequence is synthesized using nucleoside phosphoramidites and the minor groove binder phosphoramidite is incorporated into the oligonucleotide sequence to form a protected oligonucleotide-minor groove binder conjugate. Then, deprotection produces the oligonucleotide-minor groove binder.
已经合成了具有M-L-PA式的次级沟结合物磷酰胺酰胺,其中M是包含保护的杂环胺的次级沟结合物,L是连接物,PA是磷酰胺酰胺基团。合成的首选方法包括合成含有瞬时保护羟基的次级沟结合物中间体,将相应的次级沟结合物中间体的杂环胺保护为氨基甲酸酯中间体,反应氨基甲酸酯中间体以去除瞬时保护基,得到具有自由羟基的氨基甲酸酯保护的次级沟结合物作为中间体,并将具有自由羟基的中间体转化为所需的次级沟结合物磷酰胺酰胺。这些次级沟结合物磷酰胺酰胺在寡核苷酸共轭物的制备中非常有用,特别是用作探针和引物。在首选方法中,使用核苷酸磷酸酰胺合成寡核苷酸序列,并将次级沟结合物磷酰胺酰胺并入寡核苷酸序列中,形成保护的寡核苷酸-次级沟结合物共轭物。然后,去保护处理产生寡核苷酸-次级沟结合物。