%0 Conference Proceedings %T Synthesis of new heterocyclic system: [1,3]oxazolo[4,5-d] [1,2,4]triazolo[4,3-a] pyrimidine %A Bakavoli, Mehdi %A Akbarzadeh, Marzieh %A Eshghi, Hossein %A Rahimizadeh, Mohammad %A Shiri, Ali %J 20th Iranian Seminar of Organic Chemistry %D 2013