Patent ID: 7696197

Claim:
A method of protecting acoustic hair cells comprising administering to a patient in need thereof a heterocyclic derivative of formula diastereoisomers of derivative (I), or combinations thereof, wherein R is a (C 1 -C 6 ) alkyl, aryl alkyl or —C(O)R′ radicals; wherein R′ is a (C 1 -C 6 ) alkyl or aralkyl radical; the alkyl or aryl radicals being optionally substituted by one or more identical or different substituents including: (C 1 -C 6 ) alkyl, hydroxy, (C 1 -C 6 ) alkoxy, nitro, cyano, halogen or —NR 1 R 2 ; wherein R 1 and R 2 are independently, a hydrogen atom or an (C 1 -C 6 )alkyl radical.