Triethylamine → (8-((5-Cyano-4-((2-methoxyethyl)amino)pyridin-2-yl)carbamoyl)-2-(dimethoxymethyl)-5,6,7,8-tetrahydro-1,8-naphthyridin-3-yl)methyl methanesulfonate

HRID 1777989Notes

Reaction equation

C(N(CC)CC)C.[CH3:8][S:9](Cl)(=[O:11])=[O:10].[C:13]([C:15]1[C:16]([NH:41][CH2:42][CH2:43][O:44][CH3:45])=[CH:17][C:18]([NH:21][C:22]([N:24]2[C:33]3[C:28](=[CH:29][C:30]([CH2:39][OH:40])=[C:31]([CH:34]([O:37][CH3:38])[O:35][CH3:36])[N:32]=3)[CH2:27][CH2:26][CH2:25]2)=[O:23])=[N:19][CH:20]=1)#[N:14]>C1COCC1>[CH3:8][S:9]([O:40][CH2:39][C:30]1[C:31]([CH:34]([O:37][CH3:38])[O:35][CH3:36])=[N:32][C:33]2[N:24]([C:22](=[O:23])[NH:21][C:18]3[CH:17]=[C:16]([NH:41][CH2:42][CH2:43][O:44][CH3:45])[C:15]([C:13]#[N:14])=[CH:20][N:19]=3)[CH2:25][CH2:26][CH2:27][C:28]=2[CH:29]=1)(=[O:11])=[O:10]

Participants

Conditions

Temperature: 0 °C

Procedure

Triethylamine (120 μL, 0.866 mmol) and methanesulfonyl chloride (57 μL, 0.731 mmol) were added to solution of N-(5-cyano-4-((2-methoxyethyl)amino)pyridin-2-yl)-7-(dimethoxymethyl)-6-(hydroxymethyl)-3,4-dihydro-1,8-naphthyridine-1(2H)-carboxamide (intermediate 171, 300 mg, 0.657 mmol) in THF (11 ml) at 0° C. The reaction mixture was stirred for approximately 2.5 h at 0° C. and filtered to remove solid impurities. The solid residue was washed with THF and the filtrate was concentrated to yield the title compound as beige solid which was used directly in the next step. (UPLC-MS) ESI-MS 535.1 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 13.67 (br s, 1H), 8.24 (s, 1H), 7.67 (s, 1H), 7.55 (s, 1H), 5.47 (s, 3H), 5.33 (br s, 1H), 4.08-4.00 (m, 2H), 3.63 (t, 2H), 3.53-3.45 (m, 8H), 3.41 (s, 3H), 3.07 (s, 3H), 2.88 (t, 2H), 2.09-1.94 (m, 2H).

Workup

filtrationfiltered
customto remove solid impurities
washThe solid residue was washed with THF
concentrationthe filtrate was concentrated

Sources & evidence

ORD record: ord-df6816558b994a329f619cdbf9b0ef5f
Source dataset: uspto-grants-2016_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09266883B2

Reaction notes

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