Synthesis of α-l-Threofuranosyl Nucleoside Triphosphates (tNTPs)
摘要:
[GRAPHICS]The alpha-L-threofuranosyl nucleoside triphosphates of T, G, and D (tTTP, tGTP, and tDTP) were synthesized from the described 2'-O-DMT-protected derivatives using the Eckstein method, while the corresponding C derivative (tCTP) was prepared from the 2'-O-acetyl derivative. The prepared alpha-L-threofuranosyl nucleoside triphosphates, despite being one carbon shorter than the native 2'-deoxyfuranosyl nucleoside triphosphates, are effective substrates for selected DNA polymerases.
[GRAPHIC]Replacement of adenine by 2,6-diaminopurine-two nucleobases to be considered equivalent from an etiological point of view-strongly enhances the stability of TNA/TNA, TNA/RNA, or TNA/DNA duplexes and efficiently accelerates template-directed ligation of TNA ligands.