1-7 SUBSTITUTED XANTHINE DERIVATIVES HAVING ANTIASTHMATIC ACTIVITY, THEIR SALTS PHYSIOLOGICALLY ACCEPTABLE, PHARMACEUTICAL COMPOSITION CONTAINING THEM AND PROCESS FOR THEIR PREPARATION

摘要

2083257 9117993 PCTABS00008 This invention relates to xanthine derivatives having antiasthmatic activity and of general formula (I), wherein R is a linear or branched chain alkyl group of from one to six carbon atoms, and R1 is a linear or branched chain alkyl or hydroxyalkyl group of from one to six carbon atoms, with the proviso that R and R1 are never methyl groups simultaneously, their physiologically acceptable salts, their pharmaceutical compositions having antiasthmatic activity, as well as two processes for their preparation.