Pyridine → tert-butyl ((4aS,11bR)-10-(5-chloro-3-methylpicolinamido)-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate

HRID 627605Notes

Reaction equation

HRID 627605 reaction equation
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[O:27][CH2:26][CH2:25][CH:8]3[S:9](=[O:24])(=[O:23])[C:10]([CH3:22])([CH3:21])[C:11]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[N:12][C@:7]3([CH3:28])[C:6]=2[CH:29]=1.[Cl:30][C:31]1[CH:32]=[C:33]([CH3:40])[C:34]([C:37]([OH:39])=[O:38])=[N:35][CH:36]=1.N1C=CC=CC=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.CCOC(C)=O.C([O-])(O)=O.[Na+].O>[Cl:30][C:31]1[CH:32]=[C:33]([CH3:40])[C:34]([C:37]([NH:1][C:2]2[CH:3]=[CH:4][C:5]3[O:27][CH2:26][CH2:25][C@H:8]4[S:9](=[O:23])(=[O:24])[C:10]([CH3:22])([CH3:21])[C:11]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:17])([CH3:18])[CH3:19])=[N:12][C@:7]4([CH3:28])[C:6]=3[CH:29]=2)=[O:38])=[N:35][CH:36]=1.[Cl:30][C:31]1[CH:32]=[C:33]([CH3:40])[C:34]([C:37]([NH:1][C:2]2[CH:3]=[CH:4][C:5]3[O:27][CH2:26][CH2:25][C@@H:8]4[S:9](=[O:23])(=[O:24])[C:10]([CH3:22])([CH3:21])[C:11]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:17])([CH3:18])[CH3:19])=[N:12][C@:7]4([CH3:28])[C:6]=3[CH:29]=2)=[O:39])=[N:35][CH:36]=1

Participants

10

Reactant 4

HCID 1049PyridineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 223920095-Chloro-3-methylpyridine-2-carboxylic acidHCID 90307363tert-butyl ((11bR)-10-amino-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate

Product 2

HCID 90308590tert-butyl ((4aS,11bR)-10-(5-chloro-3-methylpicolinamido)-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamateYield 53.9%HCID 90308596tert-butyl ((4aR,11bR)-10-(5-chloro-3-methylpicolinamido)-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate

Reagents, catalysts & solvents 4

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolventHCID 516892Sodium BicarbonateSolvent

Procedure

To the crude tert-butyl ((11bR)-10-amino-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate (190 mg, 0.449 mmol) from Step 4 (˜2:1 trans/cis mixture) dissolved in DMF (2 ml), was added 5-chloro-3-methylpyridine-2-carboxylic acid (92 mg, 0.538 mmol), pyridine (0.109 ml, 1.346 mmol) and HATU (256 mg, 0.673 mmol) and resulting solution was stirred for 1 hr at RT. The mixture was diluted with EtOAc (8 ml) and saturated NaHCO3 solution (3 ml). Water was added to dissolve precipitated solids. The organic layer was separated, washed with water, brine and concentrated. The residue was and purified by silica gel chromatography on 12 g RediSep Gold column using 10-70% EtOAc in heptane to afford major less polar trans-isomer tert-butyl ((4aR,11bR)-10-(5-chloro-3-methylpicolinamido)-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate (110 mg, 0.191 mmol, 42.5% yield and more polar minor cis-isomer tert-butyl ((4aS,11bR)-10-(5-chloro-3-methylpicolinamido)-3,3,11b-trimethyl-4,4-dioxido-4a,5,6,11b-tetrahydro-3H-benzo[6,7]oxepino[4,5-b][1,4]thiazin-2-yl)carbamate (70 mg, 0.121 mmol, 27% yield).

Workup

  1. customresulting solution
  2. dissolutionto dissolve
  3. customprecipitated solids
  4. customThe organic layer was separated
  5. washwashed with water, brine
  6. concentrationconcentrated
  7. custompurified by silica gel chromatography on 12 g RediSep Gold column

Sources & evidence

ORD record
ord-cb0c4511f4f44e3a8a6aa96a31a6d0f3
Source dataset
uspto-grants-2016_04
Patent number
US09309263B2

Reaction notes

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