| 摘要 |
3,4-Dihydro-2H-benzo[b]pyrans of the formula I <IMAGE> I are described, in which R1 is H, OH, (C1-C2)-alkoxy, (C1-C2)-alkyl or NR4R5, R4 and R5 being identical or different and representing H, (C1-C2)-alkyl or (C1-C3)-alkylcarbonyl, R2 and R3 are identical or different and are alkyl having 1-4 carbon atoms, Ar is an aromatic or heteroaromatic system which is unsubstituted or substituted, n is 1 or 2 and X is a (CH2)r chain which can be interrupted by a heteroatom O, S or NR6, R6 being H or (C1-C4)-alkyl and r being one of the numbers 2, 3, 4 or 5. Processes for the preparation of these compounds, their use and pharmaceutical products based on these compounds are also described.
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