| 摘要 |
The invention relates to compounds of the formula 1 <IMAGE> (I) in which A1 denotes a radical of the formulae <IMAGE> <IMAGE> <IMAGE> <IMAGE> A2 is absent or represents a radical of the formula <IMAGE> R2, R3 and R4 are as defined in the specification, and X and Y, independently of one another, represent -O- or -NR13-, and to the salts thereof. Also described is a process for the preparation of the compounds of the formula 1, corresponding pharmaceutical products, and the use thereof as medicines, and intermediates for the preparation of these compounds.
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