Trifluoroacetic acid → (S)-(4-{[6-(3-aminopiperidin-1-yl)pyridin-3-yl]amino}-6-(3-chloro-5-fluoro-4-hydroxyphenyl)-1,5-naphthyridin-3-yl)(cyclobutyl)methanone trihydrochloride

HRID 526231Notes

Reaction equation

HRID 526231 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:10]2[N:11]=[C:12]3[C:17](=[CH:18][CH:19]=2)[N:16]=[CH:15][C:14]([C:20]([CH:22]2[CH2:25][CH2:24][CH2:23]2)=[O:21])=[C:13]3[NH:26][C:27]2[CH:28]=[CH:29][C:30]([N:33]3[CH2:38][CH2:37][CH2:36][C@H:35]([NH:39]C(=O)OC(C)(C)C)[CH2:34]3)=[N:31][CH:32]=2)[CH:5]=[C:6]([F:9])[C:7]=1[OH:8].C(O)(C(F)(F)F)=O>>[ClH:1].[ClH:1].[ClH:1].[NH2:39][C@H:35]1[CH2:36][CH2:37][CH2:38][N:33]([C:30]2[N:31]=[CH:32][C:27]([NH:26][C:13]3[C:12]4[C:17](=[CH:18][CH:19]=[C:10]([C:4]5[CH:5]=[C:6]([F:9])[C:7]([OH:8])=[C:2]([Cl:1])[CH:3]=5)[N:11]=4)[N:16]=[CH:15][C:14]=3[C:20]([CH:22]3[CH2:25][CH2:24][CH2:23]3)=[O:21])=[CH:28][CH:29]=2)[CH2:34]1

Participants

3

Reactant 2

HCID 6422Trifluoroacetic acidHCID 136981878(S)-tert-butyl (1-(5-((6-(3-chloro-5-fluoro-4-hydroxyphenyl)-3-(cyclobutanecarbonyl)-1,5-naphthyridin-4-yl)amino)pyridin-2-yl)piperidin-3-yl)carbamate

Product 1

HCID 137231124(S)-(4-{[6-(3-aminopiperidin-1-yl)pyridin-3-yl]amino}-6-(3-chloro-5-fluoro-4-hydroxyphenyl)-1,5-naphthyridin-3-yl)(cyclobutyl)methanone trihydrochlorideYield 286.4%

Procedure

Following general procedure IV-2, (S)-tert-butyl [1-(5-{[6-(3-chloro-5-fluoro-4-hydroxyphenyl)-3-(cyclobutanecarbonyl)-1,5-naphthyridin-4-yl]amino}pyridin-2-yl)piperidin-3-yl]carbamate (0.20 mmol) was reacted with TFA (2 mL) followed by formation of the trihydrochloride salt to afford the desired product (94 mg, 72% over two steps) as a orange-brown solid: 1H NMR (500 MHz, CD3OD) δ 9.10 (s, 1H), 8.45 (d, J=9.0 Hz, 1H), 8.36 (d, J=9.0 Hz, 1H), 8.22 (d, J=3.0 Hz, 1H), 7.74 (dd, J=9.3, 3.0 Hz, 1H), 7.63-7.23 (m, 2H), 7.10 (d, J=9.3 Hz, 1H), 4.40 (d, J=10.5 Hz, 1H), 4.38-4.23 (m, 1H), 4.03-3.92 (m, 1H), 3.45-3.36 (m, 2H), 2.60-2.36 (m, 4H), 2.26-2.13 (m, 2H), 2.03-1.90 (m, 2H), 1.81-1.70 (m, 2H); ESI MS m/z 547 [M+H]+; HPLC 98.2% (AUC), tR=10.33 min.

Sources & evidence

ORD record
ord-68d0a401bbe441338542dbc78a80d03e
Source dataset
uspto-grants-2016_05
Patent number
US09345709B2

Reaction notes

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