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

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Intens.<br />

5 –MS<br />

x10<br />

6<br />

513.2238<br />

5<br />

4<br />

3<br />

2<br />

1<br />

0<br />

549.1959<br />

450 500 550 600 650 700 750 800 m/z<br />

Figure 17. ESI-TOF/MS for receptor 10.<br />

Intens.<br />

6<br />

x10<br />

5<br />

–MS<br />

O<br />

O<br />

350.9<br />

4<br />

3<br />

2<br />

1<br />

0<br />

158.6<br />

188.6<br />

HN<br />

NH<br />

HN O O NH<br />

O<br />

HN<br />

C 14 H 19 N 6 O 5<br />

351<br />

Figure 18. Tandem ESI-MS for receptor 10.<br />

N<br />

320.9<br />

150 200 250 300 350 400 450 500 550 600 m/z<br />

513.0<br />

Intens.<br />

5<br />

x10<br />

5<br />

4<br />

–MS<br />

513.2233<br />

O O<br />

HN<br />

NH<br />

HN O O NH<br />

HN<br />

O 13 O<br />

NH<br />

3<br />

2<br />

N<br />

N<br />

1<br />

0<br />

549.1967 687.2733<br />

450 500 550 600 650 700 750 800 m/z<br />

Figure 19. ESI-TOF/MS for receptor 13.<br />

12 | S

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