Hydrochloric Acid → (S)-2-{4-[(3-Amino-1-oxo-1,2-dihydro-benzo[f]quinazolin-9-ylmethyl)-amino]-benzoylamino}-pentanedioic acid

HRID 2289284Notes

Reaction equation

HRID 2289284 reaction equation
[O:1]=[C:2]1[C:11]2[C:10]3[CH:12]=[C:13]([CH2:16][NH:17][C:18]4[CH:39]=[CH:38][C:21]([C:22]([NH:24][C@H:25]([C:33]([O:35]CC)=[O:34])[CH2:26][CH2:27][C:28]([O:30]CC)=[O:29])=[O:23])=[CH:20][CH:19]=4)[CH:14]=[CH:15][C:9]=3[CH:8]=[CH:7][C:6]=2[N:5]=[C:4]([NH:40]C(=O)C(C)(C)C)[NH:3]1.Cl>CO.[OH-].[Na+]>[NH2:40][C:4]1[NH:3][C:2](=[O:1])[C:11]2[C:10]3[CH:12]=[C:13]([CH2:16][NH:17][C:18]4[CH:19]=[CH:20][C:21]([C:22]([NH:24][C@H:25]([C:33]([OH:35])=[O:34])[CH2:26][CH2:27][C:28]([OH:30])=[O:29])=[O:23])=[CH:38][CH:39]=4)[CH:14]=[CH:15][C:9]=3[CH:8]=[CH:7][C:6]=2[N:5]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 135448916Diethyl n-(4-(((1,2-dihydro-1-oxo-3-pivalamido-benzo[f]quinazolin-9-yl)methyl)amino)benzoyl)-l-glutamate

Product 1

HCID 135405044(S)-2-{4-[(3-Amino-1-oxo-1,2-dihydro-benzo[f]quinazolin-9-ylmethyl)-amino]-benzoylamino}-pentanedioic acidYield 91.7%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 14798Sodium HydroxideSolvent

Procedure

A solution of diethyl N-(4-(((1,2-dihydro-1-oxo-3-pivalamidobenzo[f]-quinazolin-9-yl)methyl)amino)benzoyl)-L-glutamate (0.31 g, 0.49 mmol) in methanol (15 ml) and 1N NaOH (5 ml) was stirred under nitrogen at reflux for 1.5 hours and then allowed to cool. The solution was adjusted to pH 3 with 1N-HCl under nitrogen and the resulting precipitate was filtered under nitrogen, washed with water, and dried under high vacuum to give N-(4-(((3-amino-1,2-dihydro-1-oxobenzo[f]-quinazolin-9-yl)methyl)amino)benzoyl)-L-glutamic acid (0.22 g) as a white solid. 1H NMR (DMSO-d6, 300 MHz δ: 1.82-2.12 (m, 2H, glu CH2), 2.31 (t, J=7 Hz, 2H, glu CH2), 4.27-4.38 (m, 1H, glu CH), 4.50 (d, J =6 Hz, 2H, C9 --CH2), 6.55 (br s, 2H, NH2), 6.62 (d, J=9 Hz, 2H, Ar), 6.96 (t, J=6 Hz, 1H, ArNH), 7.26 (d, J=9 Hz, 1H, Ar), 7.44 (dd, J =8,2 Hz, 1H, Ar), 7.63 (d, J=9 Hz, 2H, Ar), 7.84 (d, J=8 Hz, 1H, Ar), 7.99 (d, J=9 Hz, 1H, Ar), 8.09 (d, J=8 Hz, 1H, glu NH), 9.157 (s, 1H, Ar), 11.14 (br s, 1H, N2H), 12.32 (br s, 2H, CO2H's). Anal. Calculated for C25H23N5O6H2O: C, 59.17; H, 4.97; N, 13.80. Found: 59.31; H, 4.90; N, 13.72.

Workup

  1. temperatureat reflux for 1.5 hours
  2. temperatureto cool
  3. filtrationthe resulting precipitate was filtered under nitrogen
  4. washwashed with water
  5. customdried under high vacuum

Sources & evidence

ORD record
ord-a818938669a1439eae4f0398df0a3dd9
Source dataset
uspto-grants-2000_07
Patent number
US06090941

Reaction notes

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