Recent synthetic strategies of medicinally important imidazothiadiazoles
Tooba Jabeen, Sana Aslam, Muhammad Yaseen, Muhammad Jawwad Saif, Matloob Ahmad, Sami A. Al‐Hussain, Magdi E. A. Zaki
Abstract
Imidazothiadiazole is a fundamental fused heterocyclic compound containing imidazole and thiadiazole ring systems. This versatile framework has significant applications in pharmaceutical chemistry and also possessed a remarkable biological profile. The derivatives of imidazo[2,1-b][1,3,4]thiadiazole have a broad spectrum of biological applications such as antitumor, tubulin inhibitor, anticancer, antifungal, anti-inflammatory, antimicrobial, antitubercular, anticonvulsant, antibacterial and as enzyme inhibitors. These derivatives also play a significant role in the development of non-linear optics and photo-electronics. Synthesis of this fused bicyclic compound mainly involved the reaction between 2-amino-1,3,4-thiadiazoles and α-haloketones, with different substitutions at the 2, 5, and 6 positions of the ring system. Moreover, microwave assisted multicomponent and C-C coupling reactions in the presence of catalysts or under solvent free reaction conditions were found to be reliable and valuable approaches. This review is a concerted approach to describe the synthesis and applications of imidazo[2,1-b][1,3,4] thiadiazole derivatives reported during 2015-2022.