Transglycosylation Reactions of 6-Thioguanine Acyclonucleosides
摘要:
9-(2-Acetoxyethoxy)methyl-N-2-acetyl-6-thioguanine (2) undergoes two different transglycosylation reactions: i) the 7 reversible arrow 9 isomerization, which gives the respective 7-regioisomer (3) as the major product ii) the 9 reversible arrow S-6 glycosyl migration, which leads to a 9,S-6-disubstituted product (4). S-6-Methylation completely stopped the reversibility of transglycosylation.
Transglycosylation Reactions of 6-Thioguanine Acyclonucleosides
摘要:
9-(2-Acetoxyethoxy)methyl-N-2-acetyl-6-thioguanine (2) undergoes two different transglycosylation reactions: i) the 7 reversible arrow 9 isomerization, which gives the respective 7-regioisomer (3) as the major product ii) the 9 reversible arrow S-6 glycosyl migration, which leads to a 9,S-6-disubstituted product (4). S-6-Methylation completely stopped the reversibility of transglycosylation.