The present invention relates to new compounds of Formula I ##STR1## and physiologically acceptable salts thereof wherein A and B stand for oxygen or --CH.sub.2 group with the proviso that if A stands for oxygen, then B stands for --CH.sub.2 group and R stands for hydrogen and, if A represents a --CH.sub.2 group, then B stands for oxygen, R stands for a --CH.sub.2 Q group wherein Q stands for hydrogen, and pyrrolidino, piperidino or morpholino and a process for the preparation thereof and pharmaceutical compositions containing as active ingredient a compound of the Formula (I) or a physiologically acceptable salt thereof.
本发明涉及公式I的新化合物及其生理上可接受的盐,其中A和B代表氧或-CH.sub.2基团,但如果A代表氧,则B代表-CH.sub.2基团,R代表氢;如果A代表-CH.sub.2基团,则B代表氧,R代表-CH.sub.2 Q基团,其中Q代表氢、
吡咯烷基、
哌啶基或吗啉基。本发明还涉及制备这些化合物的方法以及包含公式(I)化合物或其生理上可接受的盐作为活性成分的制药组合物。