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

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Intens.<br />

7<br />

x10<br />

599.1<br />

1.5<br />

1.0<br />

0.5<br />

0.0<br />

200 400 600 800 1000 1200 1400 m/z<br />

Figure 46. ESI-MS spectrum for macrocycle (10) from DMF and ACN (positive mode).<br />

Intens.<br />

5<br />

x10<br />

6<br />

441.0<br />

456.0<br />

512.0<br />

4<br />

484.0 499.1<br />

570.0<br />

600.1<br />

2<br />

0<br />

237.8<br />

312.9<br />

328.0 354.0<br />

284.9<br />

396.0<br />

416.0 428.0<br />

298.9 340.0 367.0 384.0<br />

200 250 300 350 400 450 500 550<br />

Figure 47. Tandem ESI-MS 2 spectrum for macrocycle (10) from DMF and ACN (positive mode).<br />

471.0<br />

526.1 537.0<br />

554.1<br />

m/z<br />

Figure 48. 1 H-NMR spectrum for macrocycle (11), DMSO-d 6 , 400 MHz.<br />

S27

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