| abstract |
A method for producing a neuraminic acid derivative, a synthetic intermediate of a neuraminic acid derivative, a method for producing the same, and a high purity neuraminic acid derivative. [Solution] There is provided a synthetic intermediate compound represented by the formula (7) [Wherein R 3 represents alkyl, R 4 and R 5 each represent H, alkyl, phenyl, or together represent tetramethylene, pentamethylene, oxo]. |