Some new 5-(5'-substituted-aryl-2'-oxo-4'-thiazolidin-1'-yl)amino-4-phenyl-2-methyl-10-bromo-[1,2,4] triazino[2 ,3-c]quinazolines have been synthesized by [1,5]cyclocondensation of thiolactic acid with 5-arylidene ...