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

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Intens.<br />

[%]<br />

100<br />

+MS<br />

388.1<br />

Exact structure<br />

80<br />

60<br />

40<br />

936.3<br />

20<br />

0<br />

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

Figure 63. Tandem ESI-MS for host-guest complex (7, 9 and 10)/20 (MS 2 for m/z 936).<br />

Intens.<br />

[%]<br />

100<br />

+MS<br />

388.1<br />

Exact structure<br />

80<br />

60<br />

40<br />

20<br />

0<br />

313.1<br />

876.3<br />

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

Figure 64. Tandem ESI-MS for host-guest complex (7, 9 and 10)/20 (MS 2 for m/z 876).<br />

Intens.<br />

[%]<br />

100<br />

+MS<br />

Exact arrangements <strong>of</strong> host and guest<br />

molecules could not be assigned by MS<br />

/MS<br />

1684.7<br />

7 =<br />

9 =<br />

18 =<br />

80<br />

60<br />

40<br />

1667.5<br />

1624.6<br />

20<br />

1607.5<br />

1723.8<br />

1645.6 1662.6<br />

1706.7<br />

0<br />

1600 1620 1640 1660 1680 1700 1720 m/z<br />

Figure 65. ESI-TOF/MS for higher Mwt complexes <strong>of</strong> receptor (7 and 10) with oligopeptide 18.<br />

28 | S

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