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

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Intens.<br />

5<br />

x10<br />

1.25<br />

+MS<br />

796.2573<br />

1.00<br />

0.75<br />

0.50<br />

0.25<br />

1284.4226<br />

0.00<br />

500 1000 1500 2000 2500 3000 3500 4000 4500 m/z<br />

Figure 23. ESI-TOF/MS for host-guest complex 7/15.<br />

Intens.<br />

4<br />

x10<br />

2.0<br />

–MS<br />

1613.5082<br />

Meas. m/z 487.1583<br />

Calcd. m/z 487.1583<br />

MF C 21 H 22 N 6 O 8<br />

Error [ppm] 0<br />

Product Ion [(M 7 ) – H ] –<br />

1.5<br />

637.1777<br />

1125.3447<br />

2102.6805<br />

1.0<br />

0.5<br />

0.0<br />

487.1583<br />

1785.5095<br />

2590.8491<br />

975.3308 1297.3440<br />

3079.0238<br />

500 1000 1500 2000 2500 3000 m/z<br />

Figure 24. ESI-TOF/MS for host-guest complex 7/16.<br />

Intens.<br />

[%]<br />

100<br />

80<br />

60<br />

40<br />

20<br />

–MS<br />

337.9<br />

487.0<br />

158.7 188.7<br />

0<br />

100 200 300 400 500 600 700 800 m/z<br />

Figure 25. Tandem ESI-MS for host-guest complex 7/16 (MS 2 for m/z 487).<br />

14 | S

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