Ethanol → Rac-n-{3-[1-(4-fluoro-benzyl)-4-hydroxy-6-isobutyl-2-oxo-1,2,5,6-tetrahydro-pyridin-3-yl]-1,1-dioxo-1,4-dihydro-1lambda6-thieno[2,3-e][1,2,4]thiadiazin-7-ylmethyl}-methanesulfonamide

HRID 421469Notes

Reaction equation

[CH3:1][S:2]([NH:5][CH2:6][C:7]1[C:15]2[S:14](=[O:17])(=[O:16])[N:13]=[C:12]([CH2:18][C:19]([OH:21])=O)[NH:11][C:10]=2[S:9][CH:8]=1)(=[O:4])=[O:3].F[P-](F)(F)(F)(F)F.N1([O:38][C:39](N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1.CN1CCOCC1.C(OC(=O)[CH2:57][CH:58]([NH:63][CH2:64][C:65]1[CH:70]=[CH:69][C:68]([F:71])=[CH:67][CH:66]=1)[CH2:59][CH:60]([CH3:62])[CH3:61])C.[O-]CC.[Na+].C(O)C>CN(C)C=O>[F:71][C:68]1[CH:67]=[CH:66][C:65]([CH2:64][N:63]2[CH:58]([CH2:59][CH:60]([CH3:61])[CH3:62])[CH2:57][C:19]([OH:21])=[C:18]([C:12]3[NH:11][C:10]4[S:9][CH:8]=[C:7]([CH2:6][NH:5][S:2]([CH3:1])(=[O:3])=[O:4])[C:15]=4[S:14](=[O:16])(=[O:17])[N:13]=3)[C:39]2=[O:38])=[CH:70][CH:69]=1

Participants

Conditions

Temperature: 25 °C

Procedure

[7-(Methanesulfonylamino-methyl)-1,1-dioxo-1,4-dihydro-1λ6-thieno[2,3-e][1,2,4]thiadiazin-3-yl]-acetic acid (prepared as described in Example 2c; 0.088 g, 0.249 mmol), O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (0.104 g, 0.274 mmol) and 4-methylmorpholine (0.055 mL, 0.500 mmol) were added sequentially to a solution of rac-3-(4-fluoro-benzylamino)-5-methyl-hexanoic acid ethyl ester (0.070 g, 0.249 mmol) in N,N-dimethylformamide (4 mL) at 25° C. The reaction mixture was stirred at 25° C. for 20 h, and then was concentrated in vacuo. The residue was partitioned between 1.0 M aqueous hydrochloric acid solution (100 mL) and ethyl acetate (2×100 mL). The organic layers were dried over sodium sulfate and were concentrated in vacuo. The residue was dissolved in ethanol (5 mL) at 25° C. A 21 wt. % solution of sodium ethoxide in ethanol (0.322 mL, 0.994 mmol) was added and the reaction mixture was heated to 60° C. for 4 h. After cooling to 25° C., the reaction mixture was partitioned between 1.0 M aqueous hydrochloric acid solution (100 mL) and ethyl acetate (2×100 mL). The organic layers were dried over sodium sulfate and were concentrated in vacuo. The residue was purified by flash chromatography (Teledyne Isco RediSep column; 50-100% ethyl acetate in hexanes) to afford (after trituration with diethylether) rac-N-{3-[1-(4-fluoro-benzyl)-4-hydroxy-6-isobutyl-2-oxo-1,2,5,6-tetrahydro-pyridin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-thieno[2,3-e][1,2,4]thiadiazin-7-ylmethyl}-methanesulfonamide (0.032 g, 0.056 mmol, 23%) as a tan solid. 1H NMR (400 MHz, DMSO-d6) δ: 0.81 (3H, d, J=6.3 Hz), 0.87 (3H, d, J=6.2 Hz), 1.30-1.37 (1H, m), 1.50-1.60 (1H, m), 2.47 (1H, d, J=18.0 Hz), 2.96 (3H, s), 3.10 (1H, dd, J1=6.4 Hz, J2=16.3 Hz), 3.35-3.40 (1H, m), 3.51-3.55 (1H, m), 4.14 (1H, d, J=14.9 Hz), 4.24 (2H, d, J=5.5 Hz), 5.04 (1H, d, J=15.1 Hz), 7.13-7.18 (2H, m), 7.24 (1H, s), 7.36-7.39 (2H, m), 7.64 (1H, t, J=6.2 Hz). LC-MS (ESI) calculated for C23H27FN4O6S3 570.11. found 571.3 [M+H+].

Workup

concentrationwas concentrated in vacuo
customThe residue was partitioned between 1.0 M aqueous hydrochloric acid solution (100 mL) and ethyl acetate (2×100 mL)
dry with materialThe organic layers were dried over sodium sulfate
concentrationwere concentrated in vacuo
dissolutionThe residue was dissolved in ethanol (5 mL) at 25° C
temperaturethe reaction mixture was heated to 60° C. for 4 h
temperatureAfter cooling to 25° C.
customthe reaction mixture was partitioned between 1.0 M aqueous hydrochloric acid solution (100 mL) and ethyl acetate (2×100 mL)
dry with materialThe organic layers were dried over sodium sulfate
concentrationwere concentrated in vacuo
customThe residue was purified by flash chromatography (Teledyne Isco RediSep column; 50-100% ethyl acetate in hexanes)

Sources & evidence

ORD record: ord-2c8baa9859d84494aba74b41f78d4a14
Source dataset: uspto-grants-2012_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08097613B2

Reaction notes

Loading…