Table 3 MIC values (μg/mL) of albomycin δ2 (1b) against S. pneumoniae, S. aureus and E. coli strains in MHII and MHII-Fe

From: Total synthesis and antimicrobial evaluation of natural albomycins against clinical pathogens

Strains

Albomycin δ2 (1b)

Ciprofloxacin

Vancomycin

Penicillin G

MHII

MHII-Fe

MHII

MHII-Fe

MHII

MHII-Fe

MHII

MHII-Fe

S. pneumoniae ATCC 49619

0.0625

0.0078

0.5

0.5

0.25

0.25

0.5

0.5

S. pneumoniae S14

0.0078

0.0039

0.5

0.5

0.25

0.25

0.5

0.5

S. pneumoniae S15

8

0.125

0.5

0.5

0.25

0.25

≥2

≥2

S. pneumoniae 29

16

0.5

>4

>4

≤1

≤1

≥2

≥2

S. aureus ATCC 29213

0.5

0.5

0.5

1

2

2

≥0.5

≥0.5

S. aureus S17

0.125

0.125

0.25

0.25

1

1

≥0.5

≥0.5

S. aureus S19

0.0625

0.0625

0.25

0.25

1

1

≥0.5

≥0.5

E. coli ATCC 25922

0.25

0.25

0.0312

0.0312

E. coli BJ 5183

0.0312

0.0312

0.0039

0.0039

  1. MHII Mueller–Hinton broth II, MHII-Fe Mueller–Hinton broth II + 100 μM 2,2′-bipyridine