Iodine → 4-{[2-(1,1-Dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinolin-4-yl]amino}butane-1,3-diol

HRID 540230Notes

Reaction equation

HRID 540230 reaction equation
[O:1]=[S:2]1(=[O:32])[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[CH2:6][N:5]([C:13]2[CH:22]=[C:21]([NH:23][CH2:24][CH:25]([OH:30])[CH2:26][C:27](O)=[O:28])[C:20]3[C:15](=[CH:16][CH:17]=[C:18]([CH3:31])[CH:19]=3)[N:14]=2)[CH2:4][CH2:3]1.[BH4-].[Na+].II>O1CCCC1.O>[O:32]=[S:2]1(=[O:1])[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[CH2:6][N:5]([C:13]2[CH:22]=[C:21]([NH:23][CH2:24][CH:25]([OH:30])[CH2:26][CH2:27][OH:28])[C:20]3[C:15](=[CH:16][CH:17]=[C:18]([CH3:31])[CH:19]=3)[N:14]=2)[CH2:4][CH2:3]1

Participants

6

Reactant 3

HCID 807IodineHCID 4311764Sodium borohydrideHCID 712552534-{[2-(1,1-Dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinolin-4-yl]amino}-3-hydroxybutanoic acid

Product 1

HCID 866914144-{[2-(1,1-Dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinolin-4-yl]amino}butane-1,3-diolYield 41.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of 4-{[2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinolin-4-yl]amino}-3-hydroxybutanoic acid (50.0 mg, 0.11 mmol, prepared in analogy to Example 11-3), sodium borohydride (100.0 g, 2.6 mmol) and iodine (300.0 mg, 1.2 mmol) in tetrahydrofuran (10.0 mL) was stirred at room temperature for 16 hours. The reaction mixture was diluted with water (20 mL) and extracted with ethyl acetate (100 mL). The organic layer was washed with brine (50 mL×2), dried over anhydrous sodium sulfate and then concentrated in vacuo. The residue was purified by preparative HPLC to afford 20.0 mg of the desired product as a light yellow solid (yield was 41.2%). MS obsd. (ESI+) [(M+H)+] 442, 1H NMR (400 MHz, CD3OD) δ ppm 8.04 (d, J=7.58 Hz, 1 H), 7.90 (d, J=7.58 Hz, 1 H), 7.81 (brs, 1 H), 7.75-7.59 (m, 2 H), 7.59-7.41 (m, 2 H), 6.10 (s, 1 H), 5.25 (brs, 2 H), 4.53 (brs, 2 H), 4.12 (brs, 1 H), 3.82 (t, J=5.94 Hz, 2 H), 3.68 (brs, 2 H), 3.55 (dd, J=13.77, 4.17 Hz, 1 H), 3.44 (dd, J=13.64, 7.33 Hz, 1 H), 2.45 (s, 3 H), 1.97-1.73 (m, 2 H).

Workup

  1. extractionextracted with ethyl acetate (100 mL)
  2. washThe organic layer was washed with brine (50 mL×2)
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by preparative HPLC

Sources & evidence

ORD record
ord-4fdd69b8f20e4caa998f8edb73ff3ba3
Source dataset
uspto-grants-2014_10
Patent number
US08871756B2

Reaction notes

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