Formaldehyde → 7-[3-[(3,4-dichlorophenyl)methyl-methyl-carbamoyl]-4-hydroxy-5-oxo-2H-pyrrol-1-yl]heptanoic acid

HRID 2214525Notes

Reaction equation

HRID 2214525 reaction equation
COC(=O)C(O)=CC(=O)N(CC1C=CC(Cl)=C(Cl)C=1)C.C=O.[NH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][C:30]([OH:32])=[O:31].[Cl:33][C:34]1[CH:35]=[C:36]([CH:50]=[CH:51][C:52]=1[Cl:53])[CH2:37][N:38]([CH3:49])[C:39]([C:41]1[CH2:42]N(C)[C:44](=[O:47])[C:45]=1[OH:46])=[O:40]>>[Cl:33][C:34]1[CH:35]=[C:36]([CH:50]=[CH:51][C:52]=1[Cl:53])[CH2:37][N:38]([CH3:49])[C:39]([C:41]1[CH2:42][N:23]([CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][C:30]([OH:32])=[O:31])[C:44](=[O:47])[C:45]=1[OH:46])=[O:40]

Participants

5

Reactant 4

HCID 712FormaldehydeHCID 135807-Aminoheptanoic acidHCID 54697551HCID 54697551, compoundHCID 69655739HCID 69655739, compound2×

Product 1

HCID 546917387-[3-[(3,4-dichlorophenyl)methyl-methyl-carbamoyl]-4-hydroxy-5-oxo-2H-pyrrol-1-yl]heptanoic acidYield 5%

Procedure

3-[(3,4-Dichloro-benzyl-methyl-carbamoyl]-2-hydroxy-acrylic acid methyl ester (Compound 12-B) was treated with paraformaldehyde and 7-amino-heptanoic acid as described in the preparation of Compound 12. The resulting residue was purified by chromatography (YMC Combiprep ODS-A, 30 mm×50 mm, MeOH/H2O/0.1% TFA) to yield the title compound as a white powder (11.2 mg, 5% yield). 1H NMR (500 MHz, CDCl3) δ: 11.95 (bs, 1H), 11.00 (s, 1H), 7.61 d, 1H, J=8.24), 7.52 (s, 1H), 7.25 (s, 1H), 4.58 (s, 2H), 4.04 (s, 2H), 3.36 (m, 2H), 2.98 (s, 3H), 2.18 (t, 2H, J=7.33), 1.48 (m, 4H), 1.26 (m, 4H). HRMS (M+H) calcd for C20H25N2Cl2O5: 443.1140. found: 443.1153.

Workup

  1. customThe resulting residue was purified by chromatography (YMC Combiprep ODS-A, 30 mm×50 mm, MeOH/H2O/0.1% TFA)

Sources & evidence

ORD record
ord-edb123077b354500807fe348743baa72
Source dataset
uspto-grants-2006_09
Patent number
US07109186B2

Reaction notes

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