@inproceedings{paperid:1035433, author = {Asghari Shirghan, Tayebe and Bakavoli, Mehdi and Rahimizadeh, Mohammad and Eshghi, Hossein and Saberi, Satar and , }, title = {Synthesis of new derivatives of pyrimido[5,4-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazine and stadise of their biological activities}, booktitle = {20th Iranian Seminar of Organic Chemistry}, year = {2013}, location = {همدان, IRAN}, keywords = {Due to their unique clinical applications; syntheses of pyrimidine-fused heterocycles have been intensively investigated in recent years. Pyrimidine derivatives are highly effective as hypnotic drugs; antitumor; antibacterial and anti-HIV agents; and in cancer detection [1-3].Moreover the pyrimido[4;5-e][1;3;4]thiadiazines are a class of heterocyclic compounds; which have been described as anti-hypertensives [4]; with enzyme inhibitory activity on soybean 15-lipoxygenase [5]. We now describe the synthesis of some new derivatives of tricyclic pyrimido[5;4-e][1;2;4]triazolo[3;4b][1;3;4]thiadiazines and their enzyme inhibitory activity towards 15-LO (Scheme 1).}, }