Regiodefined synthesis and conformational properties of adenyldiyl trimers with unsymmetrical 2′–5′ and 3′–5′ internucleotide linkages
作者:Yoshihiro Hayakawa、Masaaki Hirose、Ryoji Noyori
DOI:10.1016/0040-4020(95)00590-5
日期:——
Adenyldiyltrimers with different kinds of substitucnts on 2′–5′ and 3′–5′ phosphate linkages have been synthesized in a general, regiodefined manner. Examination of the 2D NMR spectra reveals that the trimers with adenylyl(2′–5′)adenosine linkage make a syn-anti as well as syn-syn base slack between the two adenyl bases and exist as a mixture of the two conformers.
Nucleotides Part XL. Synthesis and Characterization of Modified 2?-5? Adenylate Trimers-Potential Antiviral Agents
作者:Helga Schirmeister、Wolfgang Pfleiderer
DOI:10.1002/hlca.19940770104
日期:1994.2.9
2′–5′ Adenylate trimers 41–44 carrying the (tert-butyl)dimethylsilyl (tbds) group at the 3′-OH position of various sugar moieties were synthesized via the phosphoramidite method. The use of the (tert-butyloxy)carbonyl (boc) and 2-(4-nitrophenyl)ethylsulfonyl (npes) groups for 2′-OH protection in neighbourhood to the 3′-O-tbds residue was compared during the synthesis of the target trimers. For other