@article{paperid:1043816, author = {Hasanpour Mansour, Maede and Eshghi, Hossein and Bakavoli, Mehdi and Yusefi, Mozhde}, title = {Synthesis of novel heterocycle systems: 6,8-dimethyl-2-(methylsulfanyl-4-amino-substituted pyrimido[4′,5′:3,4]pyrazolo[1,5-a]pyrimidine and 9,11-dimethyl-5-(methylsulfanyl)pyrimido[2′,1′:5,1]pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidine}, journal = {Journal of Chemical Research}, year = {2014}, volume = {38}, number = {11}, month = {November}, issn = {1747-5198}, pages = {643--647}, numpages = {4}, keywords = {pyrazolopyrimidine; triazolopyrimidine; 6;8-dimethyl-2-(methylsulfanyl)-4-amino substituted pyrimido[4′;5′:3;4]pyrazolo[1;5-a]pyrimidine; tetrazolopyrimidine; heterocyclic compounds; tetracyclic; cyclisation; acetylacetone}, }