Skip to main content

Table 3 Inhibition zone (in mm) of the synthesized compounds compared with standard antibiotic penicillin G against Gram-positive and Gram-negative bacteria at 10−3 g/ml

From: Synthesis, characterization, and in vitro antimicrobial investigation of novel pyran derivatives based on 8-hydroxyquinoline

Compound Inhibition zone diameter (mm)
Gram-positive bacteria Gram-negative bacteria
Staphylococcus aureus Vibrio parahaemolyticus Escherichia coli Pseudomonas aeruginosa
Q1 (R = Cl) 35 30 18
Q2 (R = OCH3) 17 10
Q3 (R = NO2) 13 10
Q4 (R = H) 11 5
Penicillin G 11 5 10 9