| abstract |
The present invention relates to compounds of formula (I), or the tautomers or pharmacologically acceptable acid addition salts thereof, wherein R 1 , R 2 , R 3 , R 4 , X, and Z have one of the meanings as defined in the specification, to the use of compounds of formula (I) as a medicament, to pharmaceutical composition comprising at least one compound of formula (I), as well as to medicament combinations containing one or more compounds of formula (I). |