Synthesis of new derivatives of thieno[2,3‐b]pyridine fused with octyl ring

Derivatives of thiophene, thieno2,3‐b]pyridine, thieno5′,4′:4,5]pyrimido3,2‐a]pyridine and thiepine fused with octyl ring have been synthesized and tested for antimicrobial and antifungal activities. The structure of the newly synthesized compounds have been established on the basis of their analytical and spectral data.