Annellation of Triazole and Tetrazole Systems onto Pyrrolo[2,3-d]pyrimidines: Synthesis of Tetrazolo[1,5-c]-pyrrolo[3,2-e]-pyrimidines and Triazolo[1,5-c]pyrrolo-[3,2-e]pyrimidines as Potential Antibacterial Agents

Syntheses of several novel 4-chloropyrrolo[2,3-d]pyrimidines (1), 4-hydrazinopyrrolo[2,3-d]pyrimidines (2) and 3-amino-4-iminopyrrolo[2,3-d]pyrimidines (7) and their use in the synthesis of tetrazolo[1,5-c]pyrrolo[3,2-e]pyrimidines (3) and triazolo[1,5-c]pyrrolo[3,2-e]pyrimidines (4) required for biological screening are reported.