ChemInform Abstract: Design and Synthesis of Some New Pyrazolo[1, 5‐a]pyrimidines, Pyrazolo[5, 1‐c]triazines, Pyrazolo[3, 4‐d]pyridazines, and Isoxazolo[3, 4‐d]pyridazines Containing the Pyrazole Moiety. Issue 29 (1st July 2013)