Synthesis of A Branched Locked Nucleic Acid (LNA) Analogue
作者:Pawan K. Sharma、Surender Kumar、Poul Nielsen
DOI:10.1080/15257770701542975
日期:2007.11.26
A 3'-C-branched LNA-type bicyclic nucleoside, containing a furanose ring locked in an N-type conformation, was synthesized from a known 3-C-vinyl allofuranose derivative using a strategy relying on the condensation with the nucleobase after the introduction of the branching hydroxymethyl chain by our recently developed RuO4 based protocol. This branched LNA nucleoside has a potential as a monomer for
Synthesis of the 3′-<i>C</i>-Hydroxymethyl-Branched Locked Nucleic Acid Thymidine Monomer
作者:Surender Kumar、Pawan K. Sharma、Paul C. Stein、Poul Nielsen
DOI:10.1002/ejoc.200800716
日期:2008.12
A 3′-C-hydroxymethyl-branchedLockedNucleicAcid (LNA) monomer3 was synthesized from diacetone-α-D-glucose taking advantage of a stereoselective Grignard reaction for the introduction of a vinyl group, an aldol/Cannizzarro sequence for introducing the 4′-substituent, oxidative cleavage of the vinyl group using a RuO4-based protocol, Vorbruggen-type nucleobase coupling and finally the ring closure