View Online Downloaded by <strong>Jacobs</strong> <strong>University</strong> Bremen GGMBH on 09 July 2012 Published on 23 March 2011 on http://pubs.rsc.org | doi:10.1039/C0OB00944J CDCl 3 ) d H 9.92 (1H, s, CHO), 8.41 (1H, m, ArH), 7.44–7.51 (2H, m, ArH), 7.12 (1H, s, ArH), 6.99–7.05 (3H, m, ArH), 3.51 (2H, m, CH 2 N-), 2.99 (2H, m, CH 2 CH 2 ), 2.86 (3H, s, CH 3 ); 13 C-NMR (100 MHz, CDCl 3 ) d C 190.16, 158.98, 155.99, 149.45, 136.41, 131.66, 129.56, 126.76, 124.56, 123.30, 122.77, 121.58, 57.58, 42.40, 36.03; MS (ESI-MS, micrOTOF) m/z (Calcd. 318.0368; exp. 341.0367, M + Na + , 100%). 4-Bromo-2-[(2,2-dimethoxyethyl)-methylamino]-benzaldehyde (9) To a stirred solution <strong>of</strong> 4-bromo-2-fluorobenzaldehyde (1) (4.0g, 19.7 mmol) in acetonitrile (20 mL), K 2 CO 3 (8.14 g, 59 mmol) and 1,1-dimethoxy-N-methylethanamine (5) (2.5 mL, 19.78 mmol) was added. <strong>The</strong> mixture was stirred at 100 ◦ C for 48 h. <strong>The</strong> solvent was evaporated under vacuum. Water was added to the crude product and the aqueous phase was extracted with Et 2 O (3 ¥ 100 mL). <strong>The</strong> combined organic phases were washed with H 2 O, dried with Na 2 SO 4 and evaporated under vacuum. <strong>The</strong> crude mixture was purified by column chromatography (petroleum ether was used as an eluent for the first fraction <strong>of</strong> impurities and then a mixture <strong>of</strong> petroleum ether and ethylacetate was used to get the target product, 7 : 3 mL) to give the title compound (9) as a yellow oil (5.66 g, 94%); R f (0.67, petroleum ether : ethylacetate, 7 : 3); IR n max /cm -1 1738 (C O); 1 H-NMR (400 MHz, CDCl 3 ) d H 10.12 (1H, s, CHO), 7.54 (1H, d, J = 8.2, ArH), 7.21 (1H, s, ArH), 7.10 (1H, d, J = 8.2, ArH), 4.51 (1H, m, CH 2 CH), 3.23–3.25 (8H, m, 2-OCH 3 ,CH 2 CH), 2.92 (3H, s,-NCH 3 ); 13 C-NMR (100 MHz, CDCl 3 ) d C 190.25, 156.02, 132.04, 129.60, 126.67, 124.72, 122.98, 102.41, 59.16, 53.72, 42.96; MS (ESI-MS, micrOTOF) m/z (Calcd. 301.0314; exp. 324.0326, M + Na + , 100%). Ethyl 4-[4,4¢-diformyl-(1,1¢-biphenyl)-3-yl]-piperazine-1- carboxylate (11) To a stirred solution <strong>of</strong> ethyl 4-(5-bromo-2-formylphenyl)-piperazine-1-carboxylate (6) (3.0 g, 8.82 mmol) in toluene (20 mL) under nitrogen atmosphere, Pd(PPh 3 ) 4 (0.4 g, 0.35 mmol, 3.0 mol%) and an aqueous solution <strong>of</strong> Na 2 CO 3 (10 mL, 2mol L -1 ) was added. <strong>The</strong> mixture was stirred vigorously and then 4-formylphenylboronic acid (10) (1.32 g, 8.8 mmol) in 15 mL <strong>of</strong> ethanol was added. <strong>The</strong> mixture was refluxed overnight under vigorous stirring. <strong>The</strong> organic phase was extracted with Na 2 CO 3 solution (2 ¥ 50 mL) and 10 mL brine. <strong>The</strong> organic phase was dried over MgSO 4 , filtered and the solvent was removed under vacuum. <strong>The</strong> crude product was purified by column chromatography (petroleum ether : ethylacetate, 8 : 2 mL) to give the title compound (11) asa yellow solid (2.43 g, 75%); mp 139–140 ◦ C; R f (0.28, petroleum ether : ethyl-acetate, 7 : 3); IR n max /cm -1 1684 (br, N(C O)O, H(C O)); 1 H-NMR (400 MHz, CDCl 3 ) d H 10.36 (1H, s, CHO), 10.07 (1H, s, CHO), 7.97 (2H, d, J = 8.2, ArH), 7.92 (1H, d, J = 7.7, ArH), 7.74 (2H, d, J = 7.7, ArH), 7.40 (1H, dd, J = 7.7, ArH), 7.30 (1H, s, ArH), 4.17 (2H, q, CH 2 CH 3 ), 3.71 (4H, m, CH 2 N-), 3.12 (4H, m, CH 2 N-), 1.28 (3H, m, CH 2 CH 3 ); 13 C-NMR (100 MHz, CDCl 3 ) d C 191.76, 190.55, 155.63, 146.42, 145.91, 136.10, 131.35, 130.40, 128.37, 128.05, 122.23, 118.29, 61.72, 53.77, 43.88, 14.76; MS (ESI-MS, micrOTOF) m/z (Calcd. 366.1580; exp. 389.1554, M+Na + , 100%). 3-Phenoxybiphenyl-4,4¢-dicarbaldehyde (12) To a stirred solution <strong>of</strong> 4-bromo-2-phenoxybenzaldehyde (7) (3.0 g, 10.9 mmol) in toluene (20 mL) under nitrogen atmosphere, Pd(PPh 3 ) 4 (0.32 g, 0.28 mmol, 3.0 mol%) and an aqueous solution <strong>of</strong> Na 2 CO 3 (10 mL, 2mol L -1 ) was added. <strong>The</strong> mixture was stirred vigorously and then 4-formylphenylboronic acid (10) (1.62 g, 10.8 mmol) in 15 mL ethanol was added. <strong>The</strong> mixture was refluxed overnight under vigorous stirring. <strong>The</strong> organic phase was extracted with Na 2 CO 3 solution (2 ¥ 50 mL) and 10 mL brine. <strong>The</strong> organic phase was dried over MgSO 4 , filtered, and the solvent was removed under vacuum. <strong>The</strong> crude product was purified by column chromatography (petroleum ether : ethylacetate, 8 : 2 mL) to give the title compound (12) as a pale yellow solid (1.54 g, 47%); mp 100–101 ◦ C; R f (0.74, petroleum ether : ethylacetate, 7 : 3); IR n max /cm -1 1733 (C O); 1 H-NMR (400 MHz, CDCl 3 ) d H 10.52 (1H, s, CHO), 10.01 (1H, s, CHO), 8.01 (1H, d, J = 7.7, ArH), 7.90 (2H, d, J = 7.7, ArH), 7.63 (2H, d, J = 7.7, ArH), 7.38–7.44 (3H, m, ArH), 7.10–7.21 (4H, m, ArH); 13 C-NMR (100 MHz, CDCl 3 ) d C 191.66, 188.88, 160.35, 156.33, 147.21, 145.09, 136.19, 130.37, 130.09, 129.28, 127.97, 126.47, 124.68, 122.50, 119.44, 117.32; MS (ESI-MS, micrOTOF) m/z (Calcd. 302.0943; exp. 325.0820, M + Na + , 100%). 3-[Methyl-(2-pyridin-2-yl)-ethylamino]-1,1¢-biphenyl-4,4¢-dicarbaldehyde (13) To a stirred solution <strong>of</strong> 4-bromo-2-[methyl-(2-pyridin-2-yl)-ethylamino]-benzaldehyde (8) (3.02 g, 9.49 mmol) in toluene (20 mL) under nitrogen atmosphere, Pd(PPh 3 ) 4 (0.33 g, 0.28 mmol, 3.0 mol%) and an aqueous solution <strong>of</strong> Na 2 CO 3 (10 mL, 2mol L -1 ) was added. <strong>The</strong> mixture was stirred vigorously and then 4-formylphenylboronic acid (10) (1.56 g, 10.4 mmol) in 15 mL ethanol was added. <strong>The</strong> mixture was refluxed overnight under vigorous stirring. <strong>The</strong> organic phase was extracted with Na 2 CO 3 solution (2 ¥ 50 mL) and 10 mL brine. <strong>The</strong> organic phase was dried over MgSO 4 , filtered and the solvent was removed under vacuum. <strong>The</strong> crude product was purified by column chromatography (petroleum ether : ethylacetate, 7 : 3 then the polarity was increased to 6 : 4) to give the title compound (13) as a yellow oil (2.8 g, 85%); R f (0.28, petroleum ether : ethylacetate, 7 : 3); IR n max /cm -1 1697 and 1676 (C O), 1596 (C N); 1 H-NMR (400 MHz, CDCl 3 ) d H 10.12 (1H, s, CHO), 10.05 (1H, s, CHO),8.48(1H,m,ArH), 7.95 (2H, d, J = 8.2, ArH), 7.83 (1H, d, J = 8.2,ArH), 7.74 (2H, d, J = 8.2, ArH), 7.53 (1H, ddd,, J = 7.7, ArH), 7.30 (1H, s, ArH), 7.24– 7.26 (1H, m, ArH), 7.06–7.10 (2H, m, ArH), 3.64 (2H, m, CH 2 N-), 3.10 (2H, m, CH 2 CH 2 ), 3.01 (3H, s, CH 3 N); 13 C-NMR (100 MHz, CDCl 3 ) d C 191.83, 190.91, 159.27, 155.83, 149.46, 146.27, 145.76, 136.50, 135.95, 131.05, 130.33, 128.05, 123.37, 121.58, 120.65, 118.68, 57.60,42.97, 36.19; MS (ESI-MS, micrOTOF) m/z (Calcd. 344.1525; exp. 367.1598, M + Na + , 100%). 3-[(2,2-Dimethoxyethyl)-methylamino]-1,1¢-biphenyl-4,4¢-dicarbaldehyde (14) To a stirred solution <strong>of</strong> 4-bromo-2-[(2,2-dimethoxyethyl)-methylamino]-benzaldehyde (9) (3.0 g, 9.9 mmol) in toluene (20 mL) under nitrogen atmosphere, Pd(PPh 3 ) 4 (0.35 g, 0.3 mmol, 3.0 mol%) and an aqueous solution <strong>of</strong> Na 2 CO 3 (10mL,2mol L -1 ) was added. <strong>The</strong> mixture was stirred vigorously and then This journal is © <strong>The</strong> Royal Society <strong>of</strong> Chemistry 2011 Org. Biomol. Chem., 2011, 9, 3258–3271 | 3267
View Online Downloaded by <strong>Jacobs</strong> <strong>University</strong> Bremen GGMBH on 09 July 2012 Published on 23 March 2011 on http://pubs.rsc.org | doi:10.1039/C0OB00944J 4-formylphenylboronic acid (10) (1.49 g, 9.9 mmol) in 15 mL ethanol was added. <strong>The</strong> mixture was refluxed overnight under vigorous stirring. <strong>The</strong> organic phase was extracted with Na 2 CO 3 solution (2 ¥ 50 mL) and 10 mL brine. <strong>The</strong> organic phase was dried over MgSO 4 , filtered, and the solvent was removed under vacuum. <strong>The</strong> crude product was purified by column chromatography (petroleum ether : ethylacetate, 9 : 1 mL) to give the title compound (14) as a yellow oil (2.58 g, 79%); R f (0.37, petroleum ether : ethylacetate, 7 : 3); IR n max /cm -1 1697, 1678 (C O), 1 H- NMR (400 MHz, CDCl 3 ) d H 10.31 (1H, s, CHO), 10.06 (1H, s, CHO), 7.96 (2H, d, J = 8.2, ArH), 7.86 (1H, d, J = 7.7, ArH), 7.75 (2H, d, J = 7.7, ArH), 7.34 (1H, s, ArH), 7.29 (1H, d, J = 8.2, ArH); 13 C-NMR (100 MHz, CDCl 3 ) d C 191.80, 190.96, 155.93, 146.21, 145.84, 135.99, 131.35, 130.35, 128.04, 127.79, 120.80, 118.90, 102.58, 59.20, 53.72, 43.46; MS (ESI-MS, micrOTOF) m/z (Calcd. 327.1471; exp. 350.1356, M + Na + , 100%). (2R,3R,16R,17R,30R,31R)-(1,4,15,18,29,32)-Hexaza- (2,3 : 16,17 : 30,31)-tributano-(7,21,35)-tri-Npiprazinocarboxylate-(6,9 : 10,13 : 20,23 : 24,27 : 34,37 : 38,41)- hexa-etheno-(2H,3H,16H,17H, 30H,31H)- hexahydro-[42]-annulene (16) Dialdehyde (11) (1.15 g, 3.14 mmol) in dichloromethane (16 mL) was added to a solution <strong>of</strong> (1R,2R)-1,2-diaminocyclohexane (15) (540 mg, 4.74 mmol) in dichloromethane (16 mL). <strong>The</strong> mixture was stirred at room temperature for 72 h. <strong>The</strong> solvent was removed under vacuum. <strong>The</strong> crude mixture was purified by column chromatography (petroleum ether : ethylacetate : triethylamine, 7 : 2: 1 mL) to give the title compound (16) as a yellow solid (140 mg, 10%); mp > 150 ◦ C; IR n max /cm -1 1687 (N(C O)O), 1638 (C N); 1 H-NMR (400 MHz, CDCl 3 ) d H 8.49 (3H, s, N CH), 8.22 (3H, s, -N CH), 7.80–7.85 (1H, m, ArH), 7.70 (2H, d, J = 8.2, ArH), 7.60 (6H, d, J = 8.2, ArH), 7.44 (6H, d, J = 8.2, ArH), 7.14–7.21 (4H, m, ArH), 7.05 (2H, s, ArH), 4.08–4.17 (6H, m, CH 2 CH 3 ), 3.35–3.62 (18H, m, -NCH 2 , HCN), 2.75–2.98 (12H, br, m, -NCH 2 ), 1.86 (18H, br, m, CH 2 ), 1.49 (6H, br, m, CH 2 ), 1.21–1.32 (9H, m, CH 3 CH 2 ); 13 C-NMR (100 MHz, CDCl 3 ) d C 160.35, 158.57, 155.54, 152.73, 142.82, 142.32, 135.56, 129.09, 128.54, 126.99, 121.93, 117.70, (74.83, 74.76), 61.49, 45.95, 44.95, 44.00, 32.76, 24.57, (14.94, 14.79); MS (ESI-MS, micrOTOF) m/z (Calcd. 1332.7576; exp. 1333.7668, M+H + , 100%). (2R,3R,16R,17R,30R,31R)-(1,4, 15,18,29,32)-Hexaza- (2,3 : 16,17 : 30,31)-tributano-(7,21,35)-tri-(2,2-dimethoxy-Nmethylethanamino)-(6,9 : 10,13 : 20,23 : 24,27 : 34,37 : 38,41)-hexa- etheno-(2H,3H,16H,17H,30H,31H)-hexahydro-[42]- annulene (17) Dialdehyde (14)(1.73 g, 5.29 mmol) in dichloromethane (26 mL) was added to a solution <strong>of</strong> (1R,2R)-1,2-diaminocyclohexane (15) (906 mg, 7.95 mmol) in dichloromethane (26 mL). <strong>The</strong> mixture was stirred at room temperature for 50 h. <strong>The</strong> crude product was purified by column chromatography (petroleum ether : ethylacetate : triethylamine, 8 : 1 : 1) to give the title compound (17) as a yellow solid (90 mg, 4%); mp > 115 ◦ C; IR n max /cm -1 1637 (C N); 1 H-NMR (400 MHz, C 6 D 6 ) d H 8.90 (3H, s, -N CH), 8.27 (3H, d, J = 7.7, ArH), 8.19 (3H, s, -N CH), 7.61 (6H, d, J = 8.7, ArH), 7.27 (6H, d, J = 8.2, ArH), 7.60–7.09 (6H, m, ArH overlapping with C 6 D 6 signals), 4.38 (3H, m, CH 2 CH), 3.52–3.65 (6H, m, HCN), 2.91–3.10 (24, m, CH 3 ,-NCH 2 ), 2.48 (9H, s, CH 3 ), 1.83–2.00 (16H, br, m, CH 2 ), 1.66–1.69 (8H, br, m, CH 2 ); 13 C-NMR (100 MHz, C 6 D 6 ) d C 159.65, 158.34, 153.74, 142.47, 142.21, 135.97, 129.94, 128.79, 128.69, 126.87, 121.50, 119.07, 102.66, (75.31, 77.21) 58.00, (52.65, 52.61), 43.79, (33.38, 33.18), 24.74; MS (ESI-MS, micrOTOF) m/z (Calcd. 1215.7249; exp. 1216.7305, M + H + , 100%). (2R,3R,16R,17R,30R,31R)-(1,4,15,18,29,32)-Hexaza- (2,3 : 16,17 : 30,31)-tributano-(7,21,35)-triphenoxy- (6,9 : 10,13 : 20,23 : 24,27 : 34,37 : 38,41)-hexa-etheno- (2H,3H,16H,17H,30H,31H)-hexahydro-[42]-annulene (18) Dialdehyde (12) (1.2 g, 3.97 mmol) in dichloromethane (19.9 mL) was added to a solution <strong>of</strong> (1R,2R)-1,2-diaminocyclohexane (15) (679 mg, 5.96 mmol) in dichloromethane (19.9 mL). <strong>The</strong> mixture was stirred at room temperature for 8 h. <strong>The</strong> solvent was evaporated under vacuum. <strong>The</strong> crude mixture was purified by column chromatography (petroleum ether : diethylether : triethylamine, 5 : 4: 1 mL) to give the title compound (18) as a pale yellow solid (344 mg, 22%); mp > 250 ◦ C; IR n max /cm -1 1637 (C N); 1 H- NMR (400 MHz, CDCl 3 ) d H 8.51 (3H, s, -N CH), 8.14 (3H, s, -N CH), 7.93 (3H, d, J = 8.2, ArH), 7.52 (6H, d, J = 8.2, ArH), 7.35 (6H, d, J = 8.2, ArH), 7.20–7.28 (5H, m, ArH), 6.94–6.99 (8H, m, ArH), 6.66–6.80 (8H, m, ArH), 3.35 (6H, br, m, HCN), 1.83 (18H, br, m, CH 2 ), 1.46 (6H, br, m, CH 2 ); 13 C-NMR (100 MHz, CDCl 3 ) d C 170.03, 160.59, 157.57, 156.49, 143.58, 141.12, 135.83, 129.80, 128.47, 127.88, 126.97, 126.83, 123.23, 122.35, 118.05, 117.61, (74.40, 74.13), 32.72, 24.52; MS (ESI-MS, micrOTOF) m/z (Calcd. 1140.5666; exp. 1140.5534, M + , 100%). (2R,3R,16R,17R,30R,31R)-(1,4,15,18,29,32)-Hexaza- (2,3 : 16,17 : 30,31)-tributano-(7,21,40)-tri-Npiprazinocarboxylate-(6,9 : 10,13 : 20,23 : 24,27 : 34,37 : 38,41)- hexa-etheno-(2H,3H,16H,17H,30H,31H)-hexahydro-[42]- annulene (19) Dialdehyde (11) (1.15 g, 3.14 mmol) in dichloromethane (16 mL) was added to a solution <strong>of</strong> (1R,2R)-1,2-diaminocyclohexane (15) (537 mg, 4.71 mmol) in dichloromethane (16 mL). <strong>The</strong> mixture was stirred at room temperature for 72 h. <strong>The</strong> solvent was removed under vacuum. <strong>The</strong> crude mixture was purified by column chromatography (petroleum ether : ethylacetate : triethylamine, 7 : 2: 1 mL) to give the title compound (19) asapale yellow solid (430 mg, 35%); mp > 200 ◦ C; IR n max /cm -1 1691 (N(C O)O), 1638 (C N); 1 H-NMR (400 MHz, CDCl 3 ) d H 8.53 (1H, s, -N CH), 8.43 (1H, s, -N CH), 8.42 (1H, s, -N CH), 8.22 (1H, s, -N CH), 8.19 (1H, s, -N CH), 8.18 (1H, s, -N CH), 7.83–7.86 (2H, m, ArH), 7.75 (1H, d, J = 8.2, ArH), 7.57–7.60 (6H, m, ArH), 7.42–7.45 (6H, m, ArH), 7.17–7.25 (3H, m, ArH), 7.06 (1H, s, ArH), 6.90–6.93 (2H, m, ArH), 4.12–4.18 (6H, m, CH 2 CH 3 ), 3.72 (2H, br, m, CH 2 N-), 3.50 (6H, br, m, HCN), 3.36–3.41 (10H, m, CH 2 N-), 2.76 (4H, br, m, CH 2 N-), 2.53 (4H, br, m, CH 2 N-), 2.43 (4H, br, m, CH 2 N-), 1.85 (18H, br, m, CH 2 ), 1.48 (6H, br, m, CH 2 ), 1.23–1.28 (9H, m, CH 2 CH 3 ); 13 C-NMR (100 MHz, CDCl 3 ) d C (160.59, 160.48, 160.27), (158.36, 157.86, 157.76), (155.54, 155.48, 155.42), (152.84, 153.68), (143.44, 143.22, 142.84), (142.38, 142.12), (135.63, 135.57, 135.46), (129.10, 3268 | Org. Biomol. Chem., 2011, 9, 3258–3271 This journal is © <strong>The</strong> Royal Society <strong>of</strong> Chemistry 2011
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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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macrocycle 32 from the dynamic libr
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The polar carbamate group participa
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[2] WHO World health report 2003. h
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[32] B. Lienard, N. Selevsek, N. Ol
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FULL PAPER Synthesis and ESI-MS Com
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ability of the technique to provide
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aimed at assessing molecular recogn
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Paper 7 manuscript Synthesis, self-
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2 Similar to the case of trianglimi
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4 Receptor 7 showed enhanced recogn
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6 The newly synthesized receptors s
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8 27. Nour, H. F.; Hourani, N.; Kuh
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120| P a g e Appendix
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Supplementary Information: Suppleme
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Supplementary Material (ESI) for Or
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Monitoring the [3+3]-cyclocondensat
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Monitoring the cyclocondensation re
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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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Figure 56. 1 H-NMR spectrum for mac
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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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Figure 15. 1 H-NMR spectrum for mac
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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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Figure 35. 1 H-NMR spectrum for mac
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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