Method of using aminocoumaran derivatives for treating cerebrovascular diseases

A method for treating cerebrovascular disease which comprises administering an effective amount of the compound of the formula (I) ##STR4## wherein R.sup.1 and R.sup.2 are the same or different and are a hydrogen atom, an acyl group, an alkoxycarbonyl group, an optionally substituted aliphatic or an optionally substituted phenyl;

• R.sup.3, R.sup.4 and R.sup.5 are the same or different and are an optionally acylated hydroxyl group, an optionally substituted amino group, an optionally substituted alkoxy group or an optionally substituted aliphatic group, or two of R.sup.3, R.sup.4 and R.sup.5 may be linked together to form an optionally substituted carbocyclic group;
• R.sup.6 and R.sup.7 are the same or different and are an optionally substituted aliphatic group, provided that at least one of R.sup.6 and R.sup.7 has methylene at .alpha.-position;
• and R.sup.8 and R.sup.9 are the same or different and are a hydrogen atom or an optionally substituted aliphatic group or an optionally substituted aromatic group, or a pharmaceutically acceptable salt thereof together with a pharmaceutically acceptable carrier, diluent or excipient to a patient suffering from cerebrovascular disease.