4-SUBSTITUTED-2-DEOXY-2,3-DIDEHYDRO ALPHA-D- NEURAMIC ACID ANTIVIRAL DERIVATIVES

摘要

N-Acetylneuraminic and derivatives of formula (I) CHEM (wherein R, R1, R2, R3 and R4 are defined in the specification) pharmaceutical formulations thereof, their use in medicine, in particular as antiviral agents and methods for their preparation are described.