| abstract |
Tricyclic ethers of the general formula I ##STR1## wherein R represents a bond and R1 represents a 1-2C-alkylene radical which is completely or partly substituted by fluorine, or a chlorotrifluoroethylene radical, or R and R1 each represent a difluoromethylene radical, R2 represents hydrogen or a 1-3C-alkyl radical, R3 represents hydrogen or a 1-3C-alkyl or 1-3C-alkoxy radical, R4 represents hydrogen or a 1-3C-alkyl radical and n represents the number 0 or 1, and their salts are new compounds with a marked protective effect on the stomach. |