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

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Figure 6. ESI-TOF mass spectrum for library members 27-34 in the negative ion mode. Figure 7. Proposed fragmentation mechanism for macrocycles 30 and 33. Macrocycles 28, 30, 32 and 33 showed recognition to oligopeptides 37-39 in the gas phase. Figure 10 shows ESI-TOF mass spectrum for recognition of AcNH-L-Lys-D-Ala-D-Ala-Gly- COOH 39 with macrocycles 28, 30 and 32. The host/guest complex with the highest peak intensity referred to macrocycle 32 binding oligopeptide 39 (Fig. 10). All attempts to amplify 15 | P a g e
macrocycle 32 from the dynamic library did not succeed. High resolution m/z values for the assigned host/guest complexes are shown in table 4. Tandem ESI-MS spectrum for host/guest complex 42 (m/z 1364.5635) is shown in Figure 11, which demonstrates the identity of the observed ion as a host guest complex ion. Figure 8. Oligopeptides 37-39 which mimic bacterial cell wall. Table 3. High resolution ESI-TOF MS data in the negative ion mode for library members 27-34, products appeared as [M–H] – ions Entry Measured m/z Molecular Formula Theoretical m/z Peak intensity (%) Error [ppm] 27 1041.3712 [M–H] – C 52 H 54 N 10 O 14 1041.3748 22.82 3.4 28 900.2974 [M–H] – C 45 H 43 N 9 O 12 900.2958 100 ˗1.7 29 1116.4234 [M–H] – C 58 H 59 N 11 O 13 1116.4221 13.32 ˗1.1 30 834.2624 [M–H] – C 44 H 37 N 9 O 9 834.2641 75.86 2.1 31 1050.3932 [M–H] – C 57 H 53 N 11 O 10 1050.3904 15.86 ˗2.6 32 975.3436 [M–H] – C 51 H 48 N 10 O 11 975.3431 91.35 ˗0.5 33 759.2168 [M–H] – C 38 H 32 N 8 O 10 759.2169 43.07 0 34 909.3122 [M–H] – C 50 H 42 N 10 O 8 909.3114 20.16 ˗0.8 35 729.2058 a C 37 H 29 N 8 O 9 729.2063 56.00 0.7 36 804.2512 b C 43 H 34 N 9 O 8 804.2536 52.00 3.0 a,b Fragments of macrocycles 33 and 30. 16 | P a g e
Page 1 and 2:
The Development of Novel Antibiotic
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Declaration of Authorship I, Hany N
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Abstract Over the past few decades,
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Chapter 2 Trianglimine Chemistry
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Figure 2.4 Trianglimines 10-12 with
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Abbreviations ACN AcOH Ala Acetonit
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RMS ROESY SjGST TFA THF TLC TMS TOC
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Introduction complete remodel of th
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Introduction following protonation.
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Introduction Lehn and co-workers re
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Introduction Figure 1.8 Generation
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Introduction Figure 1.11 Synthetic
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Introduction Figure 1.13 Generation
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Introduction 1.3.11 Boronic ester e
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Introduction References 1. E. Mouli
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Introduction 51. B. Shi, M. F. Grea
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Introduction Figure 2.2 shows compu
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Introduction incorporate β-cyclode
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Introduction Trianglamine-Zn(R) 2 c
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Introduction 24. J. Gajewy, J. Gawr
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Scope of Work Scope of Work In this
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Scope of Work can be obtained from
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Scope of Work Figure 3.4 Structures
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Scope of Work References 1. G. Wrig
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Organic & Biomolecular Chemistry Ci
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Downloaded by Jacobs University Bre
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View Online Downloaded by Jacobs Un
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View Online Downloaded by Jacobs Un
Page 57 and 58: View Online Downloaded by Jacobs Un
Page 63 and 64: Paper 2 Rapid Commun. Mass Spectrom
Page 65 and 66: Trianglimine formation mechanism by
Page 75 and 76: Paper 3 Org. Biomol. Chem., 2012, 1
Page 81 and 82: View Online Table 2 Distances (Å)
Page 85 and 86: Paper 4 Chem. Eur. J., 2012, submit
Page 87 and 88: (4R,5R)- and (4S,5S)-dimethyl-2,2-d
Page 89 and 90: that two distinct conformational is
Page 91 and 92: the thimble was recharged with fres
Page 93 and 94: Paper 5 Rapid Commu. Mass Spectrom.
Page 95 and 96: INTRODUCTION No single class of dru
Page 97 and 98: EXPERIMENTAL All the solvents and r
Page 99 and 100: (b) Refluxing macrocycles 5, 6 and
Page 101 and 102: Scheme 1. Graphical representation
Page 103 and 104: Figure 1. A plot of relative intens
Page 105 and 106: In contrast, formation of library m
Page 107: Figure 5. Generated dynamic library
Page 111 and 112: The polar carbamate group participa
Page 113 and 114: [2] WHO World health report 2003. h
Page 115 and 116: [32] B. Lienard, N. Selevsek, N. Ol
Page 117 and 118: FULL PAPER Synthesis and ESI-MS Com
Page 119 and 120: ability of the technique to provide
Page 121 and 122: aimed at assessing molecular recogn
Page 123 and 124: Paper 7 manuscript Synthesis, self-
Page 125 and 126: 2 Similar to the case of trianglimi
Page 127 and 128: 4 Receptor 7 showed enhanced recogn
Page 129 and 130: 6 The newly synthesized receptors s
Page 131 and 132: 8 27. Nour, H. F.; Hourani, N.; Kuh
Page 133 and 134: 120| P a g e Appendix
Page 135 and 136: Supplementary Information: Suppleme
Page 137 and 138: Supplementary Material (ESI) for Or
Page 153 and 154: Monitoring the [3+3]-cyclocondensat
Page 155 and 156: Monitoring the cyclocondensation re
Page 157 and 158: Product ions appeared as [M+H] + Fi
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Scheme 1. Assigned higher oligomers
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Supplementary Information: Synthesi
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Scheme 4. Proposed fragmentation me
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DMSO Figure 1. 1 H-NMR spectrum for
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Figure 6. 13 C-NMR spectrum for (4S
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Intens. 7 x10 1.5 200.7 1.0 0.5 0.0
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Intens. 7 x10 200.7 1.5 1.0 0.5 0.0
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Intens. 4 x10 577.2 2.0 1.5 1.0 451
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HN N O O R R NH O O N N HN R O O O
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Intens. 5 x10 727.2 2.0 1.5 1.0 O O
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Intens. 5 x10 697.1 1.5 1.0 728.2 0
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O O O O HN N O O NH N HN N O O NH N
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Figure 38. 1 H-NMR spectrum for mac
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Intens. 5000 276.8 4000 3000 2000 1
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Intens. 7 x10 599.1 1.5 1.0 0.5 0.0
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(a) HN N O O NH O O N (b) HN N O NH
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Scheme 11. Proposed fragmentation m
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Scheme 14. Proposed fragmentation m
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Intens. 4 x10 550.9 3 2 1 0 500 100
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Figure 68. 2D-ROESY spectrum for ma
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Supplementary Information: Novel sy
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Intens. 6 x10 0.8 0.6 0.4 240.9 459
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Figure 9. 1 H-NMR spectrum for macr
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Intens. 5 x10 1.5 968.1 1.0 0.5 813
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Intens. 5 x10 897.4 4 2 335.3 707.3
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Scheme 3. Suggested fragmentation m
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Molecular modelling data for the co
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Figure 1. 1 H NMR spectrum for dica
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Intens. 2000 1493.6091 Host-Guest 1
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Intens. [%] 100 775.3 80 388.1 60 4
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Intens. 600 N HN O O 467.1916 400 O
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Intens. 6000 5000 HN N O O O O NH N
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Table 1. High resolution ESI-TOF da
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i Figure 1. 1 H NMR spectrum for ma
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i Figure 5. 1 H NMR spectrum for ma
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i j Figure 9. 1 H NMR spectrum for
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i Figure 13. DEPT-135 spectrum for
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Scheme 1. General mechanism of frag
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Intens. [%] 100 80 60 40 20 0 O H N
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Intens. [%] 100 1131.3 80 60 40 20
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Intens. 1500 1528.6088 1000 500 150
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Intens. [%] 100 80 60 40 Free guest
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Intens. 4 x10 1085.3575 1.25 1.00 0
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Intens. [%] 100 80 Free guest 586.1
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Synthesis, self-assembly and ESI-MS
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O O HN NH HN O O NH HN O 11 O NH O
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O O HN NH HN O O NH HN O 9 O NH O O
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H 2 O DMSO DMSO Figure 6. 1 H-NMR a
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Intens. 5 x10 5 -MS 487.1588 4 3 2
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Intens. -MS 6 x10 0.8 0.6 0.4 0.2 1
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Intens. -MS 6 x10 O O 350.9 1.5 1.0
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Intens. [%] 100 -MS 486.9 Exact str
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Intens. [%] -MS 100 486.9 80 60 975
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Intens. [%] +MS 100 80 517.2 Exact
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Intens. [%] 100 80 60 +MS 388.1 775
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Intens. [%] 100 +MS 517.2 Exact str
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Intens. [%] 100 80 +MS 1031.4939 7
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Intens. [%] 100 +MS 517.2 Exact str
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Intens. [%] 100 -MS 2 586.1 80 60 4
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Intens. [%] 100 -MS 2 875.2 Exact s
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Table 1. High resolution ESI-TOF/MS
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274 | P a g e
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276 | P a g e
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4. H. Nour, A. López-Periago, N. K
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