Synthesis of the first 1,2,4-triazine C-nucleoside and its transformation to novel pyridine C-nucleosides by 'inverse' [4 + 2]-cycloaddition reactions

Article abstract of DOI:10.1002/ardp.19953280216

The anomeric C-glycosyl precursors 6 and 7, appropriate for C-nucleoside synthesis and functionalized by an imidate group, were prepared. They were utilized as heterodienophiles in a Diels-Alder reaction with inverse electron demand to yield the O-benzyl