Synthesis and biological activity of functionalized phosphorus derivatives of isatin imines

Abstract

Isatin-3-imine derivatives (1a-d) have been synthesized. These compounds were then converted into phosphorylated products 2a, 2c with triethylphosphite and 3a-d with triphenylphosphine. The structures of the new compounds were confirmed by elemental analyses, IR, UV/VIS, ¹H NMR, ¹³C NMR and MS studies. The structure of compound 1a was also confirmed by single crystal X-ray diffraction studies. Compounds 1b-d and 3c-d exhibited potent antibacterial activity against Bacillus subtilis and Escherichia Coli. Compound 3a was found to exhibit antifungal activity against the tested organisms.