| abstract |
Xanthenecarboxylates of formula 1 n n n wherein: n A is a group selected from n n n X − is an anion with a single negative charge; n R is hydroxy, methyl, hydroxymethyl, ethyl, —CF 3 , —CHF 2 , or fluorine; n R 1 and R 2 , which are identical or different, are each C 1 -C 5 -alkyl which is optionally substituted by C 3 -C 6 -cycloalkyl, hydroxy, or halogen, or n R 1 and R 2 together denote a —C 3 -C 5 -alkylene-bridge; and n R 3 , R 4 , R 3′ , and R 4′ , which are identical or different, are each hydrogen, —C 1 -C 4 -alkyl, —C 1 -C 4 -alkyloxy, hydroxy, —CF 3 , —CHF 2 , —CN, —NO 2 , or halogen, n or a physiologically acceptable salt thereof, processes for preparing, them and their use in pharmaceutical compositions. |