Chemoenzymic Synthesis of 4-Substituted Riboses. S-(4'-Methyladenosyl)-L-homocysteine
摘要:
The synthesis of 4-C-methyl-D-ribose, 4-C-methyl-D-ribose, D-ribose-4-d, and L-ribose derivatives as well as the title nucleoside by a chemoenzymatic strategy beginning from cyclopentadiene is described.
dimethyl esters derived fromfuran and dimethyl acetylenedicarboxylate was efficiently hydrolysed with pig liver esterase to yield half esters with high optical purity. Following chemical transformations afforded precursors with L-configuration, and chirality transfer through ester exchange was achieved to afford precursors with D-configuration of the sugar moiety of nucleosides. Thus, an efficient approach