Patent number: 5214047
Abstract: A tetracyclic quinazoline derivative of the formula I: ##STR1## wherein A is C.sub.2-3 -alkylene or C.sub.2-3 -alkylene which is substituted by one or two C.sub.1-4 -alkyl radicals or A is cyclohexylene; X is phenyl, naphthyl or phenyl or naphthyl which is substituted by halogen, nitro, amino, C.sub.1-4 -alkylamino, sulfonylamino, C.sub.1-4 -acylamino, hydroxyl, C.sub.1-4 -alkoxy, --O--(CH.sub.2).sub.2-4 --NR.sup.1 R.sup.2, C.sub.1-4 -alkyl or C.sub.1-4 -alkylsulfonyl, wherein R.sup.1 and R.sup.2 are each hydrogen or C.sub.1-4 -alkyl; or X is thienyl or thienyl which is substituted by chlorine, fluorine, methyl, ethyl, methoxy, ethoxy, nitro or hydroxyl; and R is hydrogen, halogen, nitro, amino, C.sub.1-4 -alkylamino, sulfonylamino, C.sub.1-4 -acylamino, hydroxyl, C.sub.1-4 -alkoxy, --O--(CH.sub.2).sub.2-4 --NR.sup.3 R.sup.4, C.sub.1-4 -alkyl or C.sub.1-4 -alkylsulfonyl, wherein R.sup.3 and R.sup.4 are each hydrogen or C.sub.1-4 -alkyl, and the pharmaceutically acceptable salts thereof.
Type:
Grant
Filed:
September 12, 1988
Date of Patent:
May 25, 1993
Assignee:
BASF Aktiengesellschaft
Inventors:
Bernd Ostersehlt, Rainer Schlecker, Beatrice Rendenbach, Gerda von Philipsborn, Albrecht Franke, deceased