3-(dimethylamino)propyl 2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate → 3-(dimethylamino)propyl 2-(4-((1E,4E)-2-amino-4-((3-hydroxypropyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate

HRID 2364648Notes

Reaction equation

HRID 2364648 reaction equation
C(OC([NH:8][C:9]1[CH2:10][C:11]([C:36](=[O:52])[N:37]([CH2:41][CH2:42][CH2:43][O:44][Si](C(C)(C)C)(C)C)[CH2:38][CH2:39][CH3:40])=[CH:12][C:13]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[CH:24][C:23]([CH2:26][C:27]([O:29][CH2:30][CH2:31][CH2:32][N:33]([CH3:35])[CH3:34])=[O:28])=[CH:22][CH:21]=3)=[CH:16][C:14]=2[N:15]=1)=O)(C)(C)C>ClCCl.C(O)(C(F)(F)F)=O>[NH2:8][C:9]1[CH2:10][C:11]([C:36](=[O:52])[N:37]([CH2:41][CH2:42][CH2:43][OH:44])[CH2:38][CH2:39][CH3:40])=[CH:12][C:13]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[CH:24][C:23]([CH2:26][C:27]([O:29][CH2:30][CH2:31][CH2:32][N:33]([CH3:34])[CH3:35])=[O:28])=[CH:22][CH:21]=3)=[CH:16][C:14]=2[N:15]=1

Participants

4

Reactant 1

HCID 670876703-(dimethylamino)propyl 2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate

Product 1

HCID 509438683-(dimethylamino)propyl 2-(4-((1E,4E)-2-amino-4-((3-hydroxypropyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6422Trifluoroacetic acidSolvent

Procedure

3-(dimethylamino)propyl 2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate was dissolved in 2 mls of dichloromethane and 0.5 ml of TFA. After about one hour, the mixture was concentrated under reduced pressure and the resulting residue was then re-dissolved in dichloromethane and 1 ml of concentrated ammonium hydroxide added and the mixture vigorously stirred for 15 minutes. This mixture was then diluted with water, extracted with dichloromethane (2×), extracts dried over sodium sulfate and concentrated under reduced pressure. Preparative thin layer chromatography (2×0.5 mm plates, 10% MeOH/DCM/0.5% NH4OH) afforded 3-(dimethylamino)propyl 2-(4-((1E,4E)-2-amino-4-((3-hydroxypropyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate. 1H NMR (400 MHz, CDCl3) δ 7.57-7.65 (m, 2H), 7.46-7.51 (m, 1H), 7.28-7.40 (m, 4H), 6.87 (s, 2H), 4.07-4.21 (m, 2H), 3.56-3.71 (m, 6H), 3.40-3.54 (m, 2H), 2.82 (s, 2H), 2.26-2.36 (m, 2H), 2.20 (s, 6H), 1.59-1.87 (m, 6H), 0.86-0.99 (m, 3H); m/z (APCI-pos) M+1=521.3.

Workup

  1. concentrationthe mixture was concentrated under reduced pressure
  2. dissolutionthe resulting residue was then re-dissolved in dichloromethane
  3. addition1 ml of concentrated ammonium hydroxide added
  4. additionThis mixture was then diluted with water
  5. extractionextracted with dichloromethane (2×)
  6. dry with materialextracts dried over sodium sulfate
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-793e69c5762046f2ac94daa000ffb242
Source dataset
uspto-grants-2014_04
Patent number
US08691809B2

Reaction notes

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