4,5-Diamino-1-phenyl-1,7-dihydro-6H-pyrazolo[3,4-b]pyridin-6-one in the synthesis of fused tricyclic systems

作者：Komarova E S; Makarov V A^*; Alekseeva L M; Avramenko G V; Granik V G

来源：Russian Chemical Bulletin, 2007, 56(11): 2337-2343.

DOI：10.1007/s11172-007-0369-5

• pyrazolo[3,4-b]pyridin-6(7H)-one
• dihydroimidazo[4,5-d]pyrazolo[3,4-b]pyridin-4(3H)-one
• diazepines
• pyrazolo[3,4-b][1,2,5]thiadiazolo[3,4-d]pyridin-4(3H)-one
• [1,3]oxazolo[5,4-b]pyrazolo[4,3-e]pyridine
• dimethylformamide diethyl acetal

Starting from the substituted 4,5-diaminopyrazolo[3,4-b]pyridine, derivatives of a number of tricyclic systems, viz., imidazo[4,5-d]pyrazolo[3,4-b]pyridine, pyrazolo[3,4-b][1,2,5]thiadiazolo[3,4-d]pyridine, pyrazolo[3,4-b][1,2,3]triazolo[4,5-d]pyridine, and [1,3]oxazolo[5,4-b]pyrazolo[4,3-e]pyridine, were synthesized and reaction schemes for the processes were proposed.

• 出版日期2007-11
• 单位北京化工大学