The Erlangen Slot Machine – A Platform for Interdisciplinary Research in Dynamically Reconfigurable Computing (ESM - Eine Hardware-Plattform für interdisziplinäre Forschung im Bereich des dynamischen rekonfigurierbaren Rechnens)

A benzopyran compound represented by the following (I) wherein A represents a direct bond or the bond -CH2-O-, R1 represents a member selected from the group consisting of a C3-C5 alkyl group, a hydroxy-(C3-C5 alkyl) group, a lower alkylamino-lower alkyl group, a nitrato-(C3-C5 alkyl) group and a phenyl-(C1-C5) alkyl group, provided that the phenyl may be substituted by a lower alkoxy group, R2 represents a member selected from the group consisting of hydrogen, halogen, OH, NO2, a carbamoyl group, a lower alkyl group, a lower alkoxy group, a lower alkyleneoxy group and acetyl group, R3 represents hydrogen or NO2, B represents a direct bond, a C1-C7 alkylene group, a -O-lower alkylene group or a -CONH-lower alkylene group, and n represents 1 or 2; and an acid addition salt thereof and a pharmaceutical composition comprising aforesaid compound.