1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (19S,23 S)-tri-tert-butyl 1-(1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)-2-((1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)methyl)-13,21-dioxo-2,14,20,22-tetraazapentacosane-19,23,25-tricarboxylate

HRID 77618Notes

Reaction equation

HRID 77618 reaction equation
[NH2:1][CH2:2][CH2:3][CH2:4][CH2:5][C@H:6]([NH:14][C:15](=[O:34])[NH:16][C@@H:17]([CH2:25][CH2:26][C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8].[C:35]([O:39][C:40](=[O:100])[CH2:41][N:42]([CH2:92][C:93](=[O:99])[O:94][C:95]([CH3:98])([CH3:97])[CH3:96])[C:43](=[O:91])[CH2:44][N:45]1[CH:49]=[CH:48][N:47]=[C:46]1[CH2:50][N:51]([CH2:65][C:66]1[N:67]([CH2:71][C:72](=[O:90])[N:73]([CH2:82][C:83](=[O:89])[O:84][C:85]([CH3:88])([CH3:87])[CH3:86])[CH2:74][C:75](=[O:81])[O:76][C:77]([CH3:80])([CH3:79])[CH3:78])[CH:68]=[CH:69][N:70]=1)[CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][C:62](O)=[O:63])([CH3:38])([CH3:37])[CH3:36].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>C(Cl)Cl>[C:85]([O:84][C:83](=[O:89])[CH2:82][N:73]([CH2:74][C:75](=[O:81])[O:76][C:77]([CH3:80])([CH3:79])[CH3:78])[C:72](=[O:90])[CH2:71][N:67]1[CH:68]=[CH:69][N:70]=[C:66]1[CH2:65][N:51]([CH2:50][C:46]1[N:45]([CH2:44][C:43]([N:42]([CH2:92][C:93]([O:94][C:95]([CH3:97])([CH3:96])[CH3:98])=[O:99])[CH2:41][C:40](=[O:100])[O:39][C:35]([CH3:38])([CH3:36])[CH3:37])=[O:91])[CH:49]=[CH:48][N:47]=1)[CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][C:62](=[O:63])[NH:1][CH2:2][CH2:3][CH2:4][CH2:5][C@@H:6]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[NH:14][C:15](=[O:34])[NH:16][C@H:17]([C:18]([O:20][C:21]([CH3:22])([CH3:23])[CH3:24])=[O:19])[CH2:25][CH2:26][C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])([CH3:86])([CH3:87])[CH3:88]

Participants

7

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 251942251,5-Bis(1,1-dimethylethyl) N-((((1S)-5-amino-1-((1,1-dimethylethoxy)carbonyl)pentyl)amino)carbonyl)-L-glutamateHCID 7156164611-(bis((1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)methyl)amino)undecanoic acid

Product 1

HCID 59404243(19S,23 S)-tri-tert-butyl 1-(1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)-2-((1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)methyl)-13,21-dioxo-2,14,20,22-tetraazapentacosane-19,23,25-tricarboxylateYield 21.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of (S)-di-tert-butyl 2-(3-((S)-6-amino-1-tert-butoxy-1-oxohexan-2-yl)ureido)pentanedioate (85 mg, 0.174 mmol), 11-(bis((1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)methyl)amino)undecanoic acid (118 mg, 0.127 mmol), EDCI (38 mg, 0.20 mmol), HOBt (26 mg, 0.20) and DIPEA (0.30 mL) in DCM (5.0 mL) was stirred at rt for overnight. The reaction mixture was purified by biotage eluting with 1% to 10% MeOH in DCM to afford (19S,23 S)-tri-tert-butyl 1-(1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)-2-((1-(2-(bis(2-tert-butoxy-2-oxoethyl)amino)-2-oxoethyl)-1H-imidazol-2-yl)methyl)-13,21-dioxo-2,14,20,22-tetraazapentacosane-19,23,25-tricarboxylate (38 mg, 21%) as a colorless oil. 1H NMR (400 MHz, CDCl3) 6.95 (d, J=1.2 Hz, 2H), 6.83 (d, J=0.80 Hz, 2H), 5.97 (s, 1H), 5.28 (d, J=7.6 Hz, 1H), 5.23 (d, J=8.4 Hz, 1H), 4.94 (s, 4H), 4.33-4.25 (m, 2H), 4.12 (s, 4H), 4.03 (s, 4H), 3.63 (s, 4H), 3.25-3.16 (m, 2H), 2.53 (t, J=7.4 Hz, 2H), 2.33-2.24 (m, 2H), 2.15 (t, J=7.6 Hz, 2H), 2.08-2.03 (m, 2H), 2.02-1.20 (m, 85H); MS (ESI), 701.6 (M/2+H)+.

Workup

  1. customThe reaction mixture was purified by biotage
  2. washeluting with 1% to 10% MeOH in DCM

Sources & evidence

ORD record
ord-40634df13491416eac728599a7109489
Source dataset
uspto-grants-2014_09
Patent number
US08840865B2

Reaction notes

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