Pyrazolo-quinazoline derivatives and methods of producing such derivatives.

摘要

Novel benzologs or pyrazolo-quinazoline derivatives of the formula (I)
<Chemistry id="chema01" num="0001"><Image id="ia01" he="24" wi="59" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein X and Y are independently selected from oxygen, sulphur and imino and wherein ring (C) is a pyrazole ring fused to ring (B) via one of the three ortho-positions or sides of ring (B); the fused pyrazole ring (C) is either in the 4,3- or the 3,4-arrangement; and tautomers of formula (I) compounds; when X is not oxygen, i.e. stands for sulphur or imino, Y may stand for a covalent bond that links the hydrogen directly to the carbon atom in position 2.