Manufacturing method of the new derivative and those derivatives of pirijirusuruhoniru urea and pirijirusuruhoniruchio urea and the formulation constituent null which contains those derivatives

摘要

Derivatives of formula (I) IMAGE in which: - R denotes a cycloalkyl, bicycloalkyl or polycycloalkyl radical, - X denotes an oxygen or sulphur atom, - R1 denotes an alkyl, cycloalkyl, bicycloalkyl or polycycloalkyl radical. Medications.