Use of benzopyran derivatives for the treatment of pathologies associated with the NA.sup.+ -independent CI-/HCO.sub.3 -exchanger

A method of treating a gastric ulcer or osteroporosis disorder associated with the Na.sup.+ -independent Cl.sup.- /HCO.sub.3.sup.- exchanger in a mammal comprising the step of administering to the said mammal an amount of a compound selected from the group consisting of those of formula (I):

• ##STR4## in which n represents 0 or 1,
• R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which are identical or different, represent, independently of each other, hydrogen or alkyl;
• R.sub.5 represents hydrogen or a radical selected from the group consisting of alkyl, alkylcarbonyl, alkoxyalkyl, alkoxycarbonyl, alkoxycarbonylalkyl, and carboxyalkyl;
• R.sub.6 represents hydrogen or a radical selected from the group consisting of alkyl, phenyl, and phenylalkyl;
• R.sub.7, R.sub.8 and R.sub.9 represent, independently of each other, a radical selected from the group consisting of halogen, alkyl, alkyl substituted with halogen, alkoxy, hydroxyl, alkoxycarbonyl, and carboxyl;
• and R.sub.10 and R.sub.11 represent, independently of each other, hydrogen or a radical selected from the group consisting of halogen, alkyl, alkyl substituted with halogen, alkoxy, hydroxyl, alkoxycarbonyl, and carboxyl;
• enantiomers and diastereoisomers thereof and an addition salt thereof with a pharmaceutically-acceptable base,
• it being understood that
• the terms "alkyl" and "alkoxy" denote linear or branched groups of 1 to 8 carbon atoms;
• which is effective for alleviating the said disorder.