Compounds of formula (I), or an N-oxide, a salt, a tautomer or a stereoisomerof said compound, or a salt of saidN-oxide, tautomer or stereoisomer, wherein ring B and the pyrimidine to whichit is fused, R4, R5, R6, R7, m and n have themeanings as given in the description and the claims, which are effectiveinhibitors of the Pi3K/Akt pathway, processes for theirproduction and their use as pharmaceuticals.