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Table 1 Antimicrobial activity of the newly synthesized thiazolidinone derivatives 5a–n against the multidrug resistant tested microbial strains

From: Bioactive fluorenes. Part III: 2,7-dichloro-9H-fluorene-based thiazolidinone and azetidinone analogues as anticancer and antimicrobial against multidrug resistant strains agents

Comp.

Gram (+ve) bacteria

Gram (−ve) bacteria

Fungi

S. aureus

MRSA

S. pneumoniae

E. coli

K. pneumoniae

P. aeruginosa

A. baumannii

A. flavus

A. niger

C. albicans

5a

3

–

–

–

–

–

–

–

–

–

5b

4

–

–

–

–

–

–

–

–

–

5c

3

–

–

–

–

–

–

–

–

–

5d

4

–

–

–

–

–

–

–

–

–

5e

–

–

–

–

–

–

–

–

–

–

5f

–

–

–

–

–

–

–

–

–

–

5g

10

–

–

–

–

–

–

–

–

–

5h

11

–

–

–

–

–

–

–

–

–

5i

10

–

–

–

–

–

–

–

–

–

5j

6

–

–

10

–

8

–

–

–

–

5k

–

–

–

–

–

–

–

–

–

–

5l

9

–

–

6

–

–

–

–

–

–

5m

5

–

–

8

–

–

–

–

–

–

5n

7

–

–

–

5

–

–

–

–

–

PC

28

26

20

28

20

30

20

18

18

20

  1. Mean zone of inhibition in mm, –  resistant
  2. PC positive control (Vancomycin 50 µg/mL for Gram-positive bacteria and Gentamicin 10 µg/mL for Gram-negative bacteria), fluconazole 25 µg/mL for fungi