PYRAZOLO (5,1-B) QUINAZOLIN-9(4H)-ONE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Compounds of formula: wherein X is hydrogen, hydroxy, alkyl, alkoxy halogen, trifluoromethyl, or SOnR wherein R is alkyl and n is 0, 1 or 2; Y is hydrogen, hydroxy, alkyl, alkoxy, or 2-tetrahydrothienyl; R<1> is hydrogen or alkyl, Z is COOH, Their preparation and pharmaceutical compositions comprising an anti-allergic effective amount of a compound of the formula I.