Trifluoroacetic acid → (R)-1-(4-((6-(3-aminopiperidin-1-yl)pyridin-3-yl)amino)-6-(3-chloro-5-fluoro-4-hydroxyphenyl)-1,5-naphthyridin-3-yl)-2-methylpropan-1-one trihydrochloride

HRID 526235Notes

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](=[O:24])[CH:21]([CH3:23])[CH3:22])=[C:13]3[NH:25][C:26]2[CH:27]=[CH:28][C:29]([N:32]3[CH2:37][CH2:36][CH2:35][C@@H:34]([NH:38]C(=O)OC(C)(C)C)[CH2:33]3)=[N:30][CH:31]=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].[NH2:38][C@@H:34]1[CH2:35][CH2:36][CH2:37][N:32]([C:29]2[N:30]=[CH:31][C:26]([NH:25][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](=[O:24])[CH:21]([CH3:22])[CH3:23])=[CH:27][CH:28]=2)[CH2:33]1

Participants

Reactant 2

HCID 6422Trifluoroacetic acid

HCID 136981884(R)-tert-butyl (1-(5-((6-(3-chloro-5-fluoro-4-hydroxyphenyl)-3-isobutyryl-1,5-naphthyridin-4-yl)amino)pyridin-2-yl)piperidin-3-yl)carbamate

Product 1

HCID 137231127(R)-1-(4-((6-(3-aminopiperidin-1-yl)pyridin-3-yl)amino)-6-(3-chloro-5-fluoro-4-hydroxyphenyl)-1,5-naphthyridin-3-yl)-2-methylpropan-1-one trihydrochlorideYield 262.6%

Procedure

Following general procedure IV-2, (R)-tert-butyl (1-(5-((6-(3-chloro-5-fluoro-4-hydroxyphenyl)-3-isobutyryl-1,5-naphthyridin-4-yl)amino)pyridin-2-yl)piperidin-3-yl)carbamate (168 mg, 0.26 mmol) was reacted with TFA (2 mL) followed by formation of the trihydrochloride salt to afford the desired product (110 mg, 78%) as an orange solid: 1H NMR (500 MHz, CD3OD) δ 9.31 (s, 1H), 8.35 (s, 2H), 8.18 (d, J=2.5 Hz, 1H), 7.64 (d, J=9.0, 2.5 Hz, 1H), 7.38 (bs, 1H), 7.22-7.12 (m, 1H), 7.02 (d, J=9.0 Hz, 1H), 4.44-4.32 (m, 1H), 3.98-3.90 (m, 1H), 3.82-3.70 (m, 1H), 3.46-3.22 (m, 3H), 2.22-2.12 (m, 1H), 2.01-1.88 (m, 1H), 1.80-1.68 (m, 2H), 1.36-1.20 (m, 6H); ESI MS m/z 535 [M+H]+; HPLC>99% (AUC), tR=10.07 min.

Sources & evidence

ORD record: ord-977c6c95064040b49e72e1282e5c5ee2
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09345709B2

Reaction notes

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