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

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Scheme 1. General mechanism <strong>of</strong> fragmentation for the novel macrocycles 5-10<br />

Intens.<br />

[%]<br />

100<br />

885.4<br />

80<br />

60<br />

40<br />

20<br />

0<br />

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

Figure 17. ESI-MS 2 for macrocycle 5 in the positive ion mode.<br />

Intens.<br />

[%]<br />

100<br />

633.3<br />

80<br />

883.7<br />

60<br />

40<br />

615.4<br />

443.4<br />

867.4<br />

20<br />

417.4<br />

349.4<br />

693.4<br />

601.3<br />

399.4<br />

669.4<br />

849.4<br />

0<br />

400 500 600 700 800 m/z<br />

Figure 18. Tandem ESI-MS for macrocycle 5 in the positive ion mode.<br />

10

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