| abstract |
The invention relates to compounds of the formula I in which R1 to R11 have the meanings specified in the claims. Medicaments which comprise compounds of this type are useful for the prevention or treatment of various disorders. Thus, the compounds can be employed inter alia for renal disorders such as acute or chronic renal failure, for impairments of biliary function, for respiratory impairments such as snoring or sleep apneas or for disorders of the central nervous system. |