Piperidine → (S)-2-amino-3-(4-tert-butoxyphenyl)-N-((S)-1,1-diethoxypropan-2-yl)-N-(quinoxalin-5-ylmethyl)propanamide

HRID 2362007Notes

Reaction equation

[C:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([CH2:12][C@H:13]([NH:37]C(=O)OCC2C3C=CC=CC=3C3C2=CC=CC=3)[C:14]([N:16]([C@@H:28]([CH3:36])[CH:29]([O:33][CH2:34][CH3:35])[O:30][CH2:31][CH3:32])[CH2:17][C:18]2[CH:27]=[CH:26][CH:25]=[C:24]3[C:19]=2[N:20]=[CH:21][CH:22]=[N:23]3)=[O:15])=[CH:8][CH:7]=1)([CH3:4])([CH3:3])[CH3:2].N1CCCCC1>>[NH2:37][C@@H:13]([CH2:12][C:9]1[CH:8]=[CH:7][C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[CH:11][CH:10]=1)[C:14]([N:16]([C@@H:28]([CH3:36])[CH:29]([O:33][CH2:34][CH3:35])[O:30][CH2:31][CH3:32])[CH2:17][C:18]1[CH:27]=[CH:26][CH:25]=[C:24]2[C:19]=1[N:20]=[CH:21][CH:22]=[N:23]2)=[O:15]

Participants

Reactant 2

HCID 8082Piperidine

HCID 86698530(9H-fluoren-9-yl)methyl (S)-3-(4-tert-butoxyphenyl)-1-(((S)-1,1-diethoxypropan-2-yl)(quinoxalin-5-ylmethyl)amino)-1-oxopropan-2-ylcarbamate

Product 1

HCID 67075329(S)-2-amino-3-(4-tert-butoxyphenyl)-N-((S)-1,1-diethoxypropan-2-yl)-N-(quinoxalin-5-ylmethyl)propanamideYield 71%

Procedure

According to the procedure described in the synthesis method of Compound IV-1, (9H-fluoren-9-yl)methyl(S)-3-(4-tert-butoxyphenyl)-1-(((S)-1,1-diethoxypropan-2-yl)(quinoxalin-5-ylmethyl)amino)-1-oxopropan-2-ylcarbamate (Compound III-12) (586 mg, 0.80 mmol) was treated with piperidine and the obtained residue was purified by silica gel column chromatography (eluent: n-hexane:ethyl acetate=9:1, chloroform:methanol=100:0 and 8:2) to obtain the title compound (288 mg, 71%).

Workup

customthe obtained residue was purified by silica gel column chromatography (eluent: n-hexane:ethyl acetate=9:1, chloroform:methanol=100:0 and 8:2)

Sources & evidence

ORD record: ord-9ca0542a3de3447b9c8bf81d017720b7
Source dataset: uspto-grants-2014_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08691819B2

Reaction notes

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