9.
Tricyclic heteroaromatic systems containing a bridgehead nitrogen atom. Part 3. 1,2,4Triazolo3prime;,4prime; : 3,2pyrazolo3,4-dpyrimidines, tetrazolo1prime;,5prime; : 1,5pyrazolo3,4-dpyrimidines and pyrimido-5prime;,4prime; : 4,5pyrazolo3,2-c1,2,4triazines
机译:Tricyclic heteroaromatic systems containing a bridgehead nitrogen atom. Part 3. 1,2,4Triazolo3prime;,4prime; : 3,2pyrazolo3,4-dpyrimidines, tetrazolo1prime;,5prime; : 1,5pyrazolo3,4-dpyrimidines and pyrimido-5prime;,4prime; : 4,5pyrazolo3,2-c1,2,4triazines