Hydrochloric Acid → {2-methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester trihydrochloride

HRID 2392468Notes

Reaction equation

HRID 2392468 reaction equation
[CH3:1][O:2][C:3](=[O:47])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:30]=[CH:29][C:28]3[C:23](=[CH:24][CH:25]=[C:26]([C:31]4[CH:36]=[CH:35][C:34]([C:37]5[NH:38][C:39]([CH:42]6[CH2:46][CH2:45][CH2:44][NH:43]6)=[N:40][CH:41]=5)=[CH:33][CH:32]=4)[CH:27]=3)[CH:22]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:8])[CH3:7].C(OC(N1CCCC1C1NC(C2C=CC(C3C=CC4C(=CC=C(C5NC(C6CCCN6C(=O)C(NC(OC)=O)C(C)C)=NC=5)C=4)C=3)=CC=2)=CN=1)=O)(C)(C)C.[ClH:102]>CO.CCOCC>[ClH:102].[ClH:102].[ClH:102].[CH3:1][O:2][C:3](=[O:47])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:30]=[CH:29][C:28]3[C:23](=[CH:24][CH:25]=[C:26]([C:31]4[CH:36]=[CH:35][C:34]([C:37]5[NH:38][C:39]([CH:42]6[CH2:46][CH2:45][CH2:44][NH:43]6)=[N:40][CH:41]=5)=[CH:33][CH:32]=4)[CH:27]=3)[CH:22]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:8])[CH3:7]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 666204642-{5-[4-(6-{2-[1-(2-Methoxycarbonylamino-3-methyl-butyryl)-pyrrolidin-2-yl]-3H-imidazol-4-yl]-naphthalen-2-yl)-phenyl]-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl esterHCID 66620477{2-Methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester

Product 1

HCID 66620476{2-methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester trihydrochlorideYield 87%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 3283Diethyl EtherSolvent

Procedure

To a solution of 245-(4-Bromo-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester (1.00 g, 2.5 mmol) and [2-Methyl-1-(2-{5-[6-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-naphthalen-2-yl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-propyl]-carbamic acid methyl ester (1.97 g, 3.6 mmol, 1.5 equiv.) in DME (12.5 mL) was added K3PO4 (aqueous, 2 M, 3.9 mL, 7.8 mmol, 3 equiv.), Pd2 dba3 (0.12 g, 0.13 mmol, 0.05 equiv.), and Xantphos (0.15 g, 0.26 mmol, 0.1 equiv.). The slurry was degassed with argon for 5 minutes and heated to 80° C. for 18 hours. The resulting reaction mixture was diluted with EtOAc/MeOH (10:1) and filtered through CELITE. The solution was washed with water and brine. The aqueous layer was back-extracted with EtOAc and the combined organic layers were dried over Na2SO4 and concentrated. The crude oil was purified by column chromatography (SiO2, 50→100% EtOAc in Hexanes) to provide 2-{5-[4-(6-{2-[1-(2-Methoxycarbonylamino-3-methyl-butyryl)-pyrrolidin-2-yl]-3H-imidazol-4-yl]-naphthalen-2-yl)-phenyl]-1H-imidazol-2-yl}-pyrrolidine-1-carboxylic acid tert-butyl ester (0.93 g, 49%) as a yellow powder. LCMS-ESI+: calc'd for C42H49N7O5: 731.4 (M+). Found: 732.9 (M+H+). {2-Methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester. To a slurry of 2-{5-[4-(6-{2-[1-(2-Methoxycarbonylamino-3-methyl-butyryl)-pyrrolidin-2-yl]-3H-imidazol-4-yl]-naphthalen-2-yl)-phenyl]-1H-imidazol-2-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester (0.1 g, 0.14 mmol) in MeOH (0.15 mL) was added HCl in dioxanes (4 M, 0.7 mL). The resulting solution was stirred at room temperature for 1 hour and diluted with Et2O. The resulting precipitate was filtered and dried to provide {2-Methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester trihydrochloric acid salt (0.09 g, 87%) as a white powder. LCMS-ESI+: calc'd for C37H41N7O3: 631.3 (M+). Found: 632.7 (M+H+). [1-(2-{5-[6-(4-{2-[1-(2S)-(2-Methoxycarbonylamino-2-phenyl-acetyl)-pyrrolidin-2-yl]-3H-imidazol-4-yl}-phenyl)-naphthalen-2-yl]-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl ester. To a slurry of {2-Methyl-1-[2-(5-{6-[4-(2-pyrrolidin-2-yl-3H-imidazol-4-yl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-pyrrolidine-1-carbonyl]-propyl}-carbamic acid methyl ester (0.045 g, 0.06 mmol) and (S)-methoxycarbonylamino-phenyl-acetic acid (0.02 g, 0.09 mmol, 1.5 equiv.) in CH2Cl2 (0.6 mL) was added HATU (0.03 g, 0.08, 1.25 equiv.) and K3PO4 (0.05 g, 0.22 mmol, 3 equiv.). The reaction mixture was stirred at room temperature for 18 hours and diluted with CH2Cl2. The salts were filtered and the filtrate was concentrated. The crude oil was purified by preparative HPLC (Gemini, 15-40% MeCN in H2O (0.1% formic acid)) and lyophilized to provide [1-(2-{5-[6-(4-{2-[1-(2S)-(2-Methoxycarbonylamino-2-phenyl-acetyl)-pyrrolidin-2-yl]-3H-imidazol-4-yl}-phenyl)-naphthalen-2-yl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl ester (0.03 g, 65%) as a white powder. LCMS-ESI+: calc'd for C47H50N8O6: 822.4 (M+). Found: 823.5 (M+H+). 1H-NMR: 400 MHz, (CDCl3) 8: (Mixture of rotomers) 7.64-8.03 (m, 9H), 7.20-7.40 (m, 6H), 7.17 (s, 2H), 6.14 (m, 1H), 5.53 (dd, 2H), 5.25-5.33 (m, 2H), 4.33 (t, 1H), 3.85 (m, 1H), 3.73 (m, 1H), 3.68 (s, 3H), 3.66 (s, 3H), 3.27 (m, 1H), 2.86-2.96 (m, 3H), 2.35 (m, 1H), 1.94-2.23 (m, 6H), 0.87-0.90 (m, 6H).

Workup

  1. filtrationThe resulting precipitate was filtered
  2. customdried

Sources & evidence

ORD record
ord-8c9bca0f412b43caafc60bdb9dafca8e
Source dataset
uspto-grants-2012_09
Patent number
US08273341B2

Reaction notes

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