Methyl 4-aminobutanoate → 4-{2,5-Dichloro-4-[3-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-pyridin-4-yloxy]-benzoylamino}-butyric acid methyl ester

HRID 1967019Notes

Reaction equation

HRID 1967019 reaction equation
COC(=O)[CH2:4][NH:5][C:6](=[O:37])[C:7]1[CH:12]=[C:11]([Cl:13])[C:10]([O:14][C:15]2[CH:20]=[CH:19][N:18]=[CH:17][C:16]=2[C:21]([N:23]2[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[N:26]([CH:33]3[CH2:35][CH2:34]3)[CH2:25][CH2:24]2)=[O:22])=[CH:9][C:8]=1[Cl:36].NC[CH2:41][CH2:42][C:43]([O:45][CH3:46])=[O:44]>CCCCCCC.C(OCC)(=O)C>[CH3:46][O:45][C:43](=[O:44])[CH2:42][CH2:41][CH2:4][NH:5][C:6](=[O:37])[C:7]1[CH:12]=[C:11]([Cl:13])[C:10]([O:14][C:15]2[CH:20]=[CH:19][N:18]=[CH:17][C:16]=2[C:21]([N:23]2[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[N:26]([CH:33]3[CH2:35][CH2:34]3)[CH2:25][CH2:24]2)=[O:22])=[CH:9][C:8]=1[Cl:36]

Participants

4

Reactant 2

HCID 18614Methyl 4-aminobutanoateHCID 53312194{2,5-Dichloro-4-[3-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-pyridin-4-yloxy]-benzoylamino}-acetic acid methyl ester

Product 1

HCID 673207424-{2,5-Dichloro-4-[3-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-pyridin-4-yloxy]-benzoylamino}-butyric acid methyl ester

Reagents, catalysts & solvents 1

HCID 21899848Ethylacetate heptaneSolvent

Procedure

The title compound was prepared in analogy to Example 1, from 2,5-dichloro-4-[3-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-pyridin-4-yloxy]-benzoic acid (Example 29, intermediate) and methyl 4-aminobutyrate (commercially available, CAS RN 3251-07-8) and using a gradient of n-heptane:ethyl acetate (100:0 to 0:100) for the chromatographic purification. Light brown foam (42%). MS (ESI): m/z=583.150 [M+H]+.

Workup

  1. customfor the chromatographic purification

Sources & evidence

ORD record
ord-69589d7a9b914675b1b340d9cb993561
Source dataset
uspto-grants-2013_04
Patent number
US08420647B2

Reaction notes

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