Return to Article Details Synthesis of 1,2,4-triazolo[4,3-<i>c</i>]-, tetrazolo[1,5-<i>c</i>]-, and 1,2,4-triazino[5,6-<i>c</i>]pyrano[4'3':4,5]pyrrolo[3,2-<i>e</i>]pyrimidine derivatives Download Download PDF