PROCESS FOR PREPARING NEURAMINIDASE INHIBITOR RO-64-0796

摘要

The invention provides a multistep process for preparing 1,2-diamino compounds of formula(see formula I) wherein R1, R1', R2, R2', R3 and R4 have the meaning given in the specification and pharmaceutically acceptable addition salts thereof, from 1,2-epoxides of formula(see formula II) wherein R1, R1', R2 and R2' have the meaning given in the specification.