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

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Intens.<br />

[%]<br />

100<br />

80<br />

+MS<br />

1031.4939<br />

7 =<br />

10 =<br />

19 =<br />

60<br />

40<br />

20<br />

1545.7642<br />

0<br />

500 1000 1500 2000 2500 m/z<br />

Figure 54. ESI-TOF/MS showing selective recognition <strong>of</strong> oligopeptide 19 by receptor 10.<br />

Intens.<br />

[%]<br />

100<br />

+MS<br />

1031.4<br />

Exact structure<br />

517.2<br />

80<br />

60<br />

40<br />

20<br />

353.1<br />

0<br />

500 1000 1500 2000 2500 m/z<br />

Figure 55. Tandem ESI-MS for host-guest complex (7 and 10)/19 (MS 2 for m/z 1031).<br />

Intens.<br />

[%]<br />

100<br />

+MS<br />

902.4445<br />

7 =<br />

10 =<br />

20 =<br />

80<br />

60<br />

40<br />

20<br />

775.4305 876.3800<br />

1029.5042<br />

0<br />

800 850 900 950 1000 m/z<br />

Figure 56. ESI-TOF/MS showing selective recognition <strong>of</strong> oligopeptide 20 by receptor 10.<br />

25 | S

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