The Development of Novel Antibiotics Using ... - Jacobs University

Intens.
5
x10
1.5
1.0
–MS
O O
HN
NH
HN O O NH
HN
O 8 O
NH
555.2224
0.5
O
O
0.0
591.1975
781.3124
450 500 550 600 650 700 750 800 m/z
Figure 11. ESI-TOF/MS for receptor 8.
Intens.
5
x10
0.8
–MS
O
O
406.0
0.6
0.4
HN
NH
HN O O NH
O
HN
C 18 H 24 N 5 O 6
406
555.1
0.2
0.0
256.7
O
431.8
200 250 300 350 400 450 500 550 600 m/z
Figure 12. Tandem ESI-MS for receptor 8.
Intens.
5
x10
2.5
2.0
–MS
547.1782
O O
HN
NH
HN O O NH
HN
O 9 O
NH
1.5
O
O
O
O
1.0
0.5
583.1529
0.0
450 500 550 600 650 700 750 800 m/z
Figure 13. ESI-TOF/MS for receptor 9.
10 | S