| 摘要 |
Compounds of formula (I): <IMAGE> (I) wherein: A represents a CH-NO2 group or a N-CN group; B represents CH2, O, S or a direct bond; R represents a bicyclic or polycyclic residue, variously substituted and functionalized; R1 and R2, which may be the same or different, are hydrogen or C1-C4 alkyl groups; and n and m, which may be the same or different, are 0, 1, 2, 3 or 4; are valuable pharmacological agents. |
