Microwave-Assisted Synthesis and Antimicrobial Activity of Some Novel Isatin Schiff Bases Linked to Nicotinic Acid via Certain Amino Acid Bridge

Figure 3

MIC of compounds against Gram-positive bacteria (B. subtilis) (a) and (S. aureus) (b), Gram-negative bacteria (E. coli) (c), and yeast (C. albicans) (d).

(a)

(b)

(c)

(d)