Diisopropylethylamine → Methyl 2-[4-((2S)-2-[(benzyloxy)carbonyl]amino-3-[3-bromo-4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)phenyl]propanoylamino)butoxy]-6-hydroxybenzoate

HRID 724661Notes

Reaction equation

HRID 724661 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([CH:23]2[S:27](=[O:29])(=[O:28])[NH:26][C:25](=[O:30])[CH2:24]2)=[C:19]([Br:31])[CH:18]=1)[C:13](O)=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.Cl.[NH2:60][CH2:61][CH2:62][CH2:63][CH2:64][O:65][C:66]1[CH:75]=[CH:74][CH:73]=[C:72]([OH:76])[C:67]=1[C:68]([O:70][CH3:71])=[O:69].C(N(CC)C(C)C)(C)C>CN(C=O)C>[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([CH:23]2[S:27](=[O:28])(=[O:29])[NH:26][C:25](=[O:30])[CH2:24]2)=[C:19]([Br:31])[CH:18]=1)[C:13]([NH:60][CH2:61][CH2:62][CH2:63][CH2:64][O:65][C:66]1[CH:75]=[CH:74][CH:73]=[C:72]([OH:76])[C:67]=1[C:68]([O:70][CH3:71])=[O:69])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 11569768(2S)-2-[(benzyloxy)carbonyl]amino-3-[3-bromo-4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)phenyl]propanoic AcidHCID 69597617Methyl 2-(4-aminobutoxy)-6-hydroxybenzoate hydrochloride

Product 1

HCID 58746621Methyl 2-[4-((2S)-2-[(benzyloxy)carbonyl]amino-3-[3-bromo-4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)phenyl]propanoylamino)butoxy]-6-hydroxybenzoateYield 61%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

(2S)-2-[(Benzyloxy)carbonyl]amino-3-[3-bromo-4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)phenyl]propanoic acid (10.2 mg, 0.020 mmol) in DMF (2.00 mL) was treated with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (10.6 mg, 0.0240 mmol). After five minutes methyl 2-(4-aminobutoxy)-6-hydroxybenzoate hydrochloride (8.27 mg, 0.030 mmol) and N,N-diisopropylethylamine (17.4 μL, 0.100 mmol) were added and the solution stirred at rt for 2 h. Purification by preparative LCMS afforded product as a white solid (8.9 mg, 61%). 1H NMR (400 MHz, CD3OD): δ 8.07 (brs, 1H), 7.63 (s, 1H), 7.41 (d, J=8.1 Hz, 1H), 7.31–7.23 (m, 7H), 6.49–6.46 (m, 2H), 5.43 (t, J=6.1 Hz, 1H), 5.02 (s, 2H), 4.33–4.29 (m, 1H), 3.97–3.92 (m, 2H), 3.85 (s, 3H), 3.47–3.36 (m, 2H), 3.29–2.82 (m, 4H), 1.68–1.60 (m, 4H); LCMS found for C32H35BrN3O10S (M+H)+: m/z=734.

Workup

  1. customPurification by preparative LCMS

Sources & evidence

ORD record
ord-50eb54a56e1f49f481a48807f3bf6623
Source dataset
uspto-grants-2006_11
Patent number
US07141596B2

Reaction notes

Loading…