Synthesis, computational studies, antimycobacterial and antibacterial properties of pyrazinoic acid–isoniazid hybrid conjugates
作者:Siva S. Panda、Adel S. Girgis、Bibhuti B. Mishra、Mohamed Elagawany、Venkatasai Devarapalli、William F. Littlefield、Ahmed Samir、Walid Fayad、Nehmedo G. Fawzy、Aladdin M. Srour、Riham M. Bokhtia
DOI:10.1039/c9ra03380g
日期:——
Benzotriazole and microwave mediated syntheses led to a new set of hybrid conjugates of pyrazinoic acid with isoniazid via aminoacid linkers in excellent yields with retention of chirality. Microbiological screening of the synthesized conjugates revealed an exceptionally high activity against some of the pathogenic bacterial strains at low concentrations. Promising antimycobacterial properties were
Solution- and solid-phase Staudinger-mediated cyclizations were assessed to efficiently prepare hetero-2,5-diketopiperazines from their protected azido dipeptide thioesters under microwave irradiation. Short reaction time, good yields and ease of purification are the main assets of this methodology.