Pyridylhydrazide-piroxol 3,2-D pyridine-carbamide, class 4 and 5 phosphate inhibitors; compounds containing fixed, non-fixed and Kit combinations, used in the preparation of drugs for respiratory diseases

摘要

The compounds of formula (1) in which R1, R7, R8, R9, R10, R17, R18, R19, R20 and m have the meanings as given in the description, are novel effective inhibitors of type 4 and type 5 phosphodiesterase.