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Table 1 Inhibition effect of the compounds 4, 5a5q against Xoo and Rs

From: Synthesis and biological activity of myricetin derivatives containing 1,3,4-thiadiazole scaffold

Compd.

R

Xoo

Rs

100 μg/mL

50 μg/mL

100 μg/mL

50 μg/mL

2

84.5 ± 3.9

54.6 ± 8.5

46.5. ± 9.7

28.1 ± 7.8

3a

H

84.9 ± 5.8

60.1 ± 2.5

36.0 ± 2.6

32.4 ± 6.1

3b

4-NO2Ph

81.4 ± 4.6

65.2 ± 9.0

81.5 ± 6.7

60.2 ± 6.9

3c

2-MePh

47.2 ± 1.5

25.9 ± 3.7

49.3 ± 6.7

30.3 ± 3.8

3d

4-ClPh

99.6 ± 0.1

90.7 ± 4.0

64.3 ± 8.8

30.4 ± 4.1

3e

Me

58.2 ± 5.1

27.4 ± 5.4

75.7 ± 8.1

65.5 ± 9.9

3f

2-ClPh

87.3 ± 2.5

82.6 ± 2.6

69.3 ± 0.8

46.5 ± 9.1

3g

2-FPh

79.7 ± 3.6

21.0 ± 4.9

45.2 ± 5.9

38.3 ± 2.4

3h

4-OMePh

37.3 ± 6.2

15.5 ± 8.9

28.1 ± 7.6

27.1 ± 6.0

3i

2,4-di-ClPh

77.5 ± 1.4

68.2 ± 5.4

64.3 ± 6.1

52.1 ± 2.8

3j

3-NO2Ph

30.0 ± 1.2

79.8 ± 9.7

45.2 ± 8.3

31.1 ± 4.3

3k

4-BrPh

47.3 ± 4.7

23.3 ± 7.5

26.4 ± 2.6

10.7 ± 1.6

3l

2-BrPh

50.7 ± 1.9

31.6 ± 4.5

24.0 ± 4.7

16.2 ± 0.7

3m

2-Cl-thiazol-5-yl

99.4 ± 3.9

80.8 ± 3.7

26.3 ± 3.2

25.0 ± 6.6

3n

Ph

38.3 ± 4.5

17.7 ± 0.1

45.3 ± 5.6

44.7 ± 5.1

3o

4-MePh

52.6 ± 3.3

37.6 ± 5.5

65.4 ± 1.7

52.1 ± 5.7

3p

Pyridin-3-yl

84.3 ± 3.8

71.2 ± 5.3

38.0 ± 6.2

12.8 ± 6.0

Myricetin a

40.1 ± 8.3

21.0 ± 5.6

28.6 ± 2.2

17.5 ± 3.3

Thiadiazole-copper a

52.4 ± 2.0

28.7 ± 4.1

46.7 ± 2.0

32.2 ± 2.1

  1. Average of three replicates
  2. a Thiadiazole-copper and myricetin were used for comparison of antibacterial activity