Abstract
The alcoholysis reaction of catechol cyclic phosphate (CCP) (I) with polyols reported in the preceding paper was applied to phosphorylation of riboflavin. The latter was phosphorylated to give a mixture of riboflavin 5'-phosphate (FMP) (Vc) and riboflavin 4', 5'-cyclic phosphate in a yield of 75∼78%. After acid hydrolysis the pure riboflavin 5'-phosphate was obtained by zone electrophoresis without any loss of the product during isolation.
