183945-01-9Relevant articles and documents
Stereoselective synthesis of 2'-O-(2-methoxyethyl)ribonucleosides: Neighboring-group participation of the methoxyethoxy group in the ribosylation step
Martin
, p. 1930 - 1938 (1996)
A new access to 2'-O-(2-methoxyethyl)ribonucleosides, building blocks for second-generation antisense oligonucleotides, is presented. The influence of various reaction parameters on the coupling reaction of 2-O-(2-methoxyethyl)-D-ribose derivatives with heteroaromatic bases as the key step was investigated, and reaction conditions were optimized with regard to formation of the desired β-D-anomers. With Sn2+ salts as promotors in polar solvents, these β-D-anomers were formed with a high degree of stereoselectivity.