Synthesis of the Sulfonate Analogue of Seminolipid via Horner−Wadsworth−Emmons Olefination
摘要:
The first synthesis of the sulfonate analogue of seminolipid, the main sulfoglycolipid in mammalian sperm, is reported. Installation of the sulfonate unit was accomplished by a quite unexplored strategy based on Horner-Wadsworth-Emmons olefination on a 3'-keto-galactoside, followed by stereoselective double bond reduction.
Molecular Construction of Sulfonamide Antisense Oligonucleotides
作者:Valerijs Korotkovs、Linus F. Reichenbach、Clémentine Pescheteau、Glenn A. Burley、Rob M. J. Liskamp
DOI:10.1021/acs.joc.9b00941
日期:2019.9.6
An efficient and scalable synthesis of new oligonucleotide monomers was developed for replacement of the phosphodiester backbone of RNA by a sulfonamide-containing backbone to enable construction of sulfonamide antisense oligonucleotides (SaASOs). It was shown that by employing these sulfonamide RNA (SaRNA) monomers, it was possible to synthesize oligomers in solution. The properties of a sulfonamide
Synthesis and Conformational Analyses of Cyclonucleoside Having 13-Membered Ring Bridging Nucleobase and 5′-Position via a Linker Containing Sulfonamide
intermediate that contained both a sulfonyltriazole and amino groups. Both 1H NMR and computational studies revealed that the sugarconformation, base orientation, and γ torsion angle were S-type, anti, and trans, respectively. As such, cyclic nucleosides show promise for introducing these specific distorted conformations into functional nucleic acids.