%0 Journal Article %T 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 %A Hasanpour Mansour, Maede %A Eshghi, Hossein %A Bakavoli, Mehdi %A Yusefi, Mozhde %J Journal of Chemical Research %@ 1747-5198 %D 2014